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Pi brohure

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Pi brohure

  1. 1. a new generation of instruments Company Overview
  2. 2. Own Products •Dissolved Oxygen •Suspended Solids •Residual Chlorine •Residual Ozone •Chlorine Dioxide •pH/ORP(Redox) •Swimming Pool and Spa Controllers •De-watering Polymer Control •Biofilm Control •Conductivity
  3. 3. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control OxySense - Dissolved Oxygen Meter The OxySense range of online DO meters utilises the very latest and best optical DO sensor available in the world today. It is an optical luminescent device which is extremely resistant to abrasion, extremely stable, and has greatly reduced maintenance and whole life costs. ● No chemicals or moving parts ● Optional self-cleaning sensor and self-verification ● Stable and reliable - excellent process control ● Suitable for all Dissolved Oxygen applications ● Up to 12 months between maintenance ● Up to 12 months between calibration The OxySense optical sensor is available with different controllers giving you the same great performance with different communication, display, and control options. With the OxySense range of online DO meters, you get everything that you need - and nothing that you don't. For more information please see the individual brochure - CRONOS® , CRIUS® and CRATOS CRONOS® OxySense • High Quality and Multilingual • Lowest Purchase Cost • Up to 3 sensors • Options include: – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS OxySense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Up to 12 sensors • Datalogging • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® OxySense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors • All CRONOS® options plus: – texting alarms – remote internet access – automatic cleaning – automatic calibration – integrated flow control "Simply the best DO sensor I've used" Jon Shan, USA
  4. 4. Specification Type: Lumiphore Optical Dissolved Oxygen Measurand: Dissolved Oxygen Range: 0-20mg/l or 0-450% Saturation Resolution: 0.01mg/l Accuracy and Precision: ±0.1mg/l from 0-8mg/l (1.25%) and ±0.2mg/l from 8-20mg/l Stability: Better than 1% per month (without calibration) Temperature Range: >0 up to 50°c pH-range: pH2 up to pH10 Salinity Range: 0-42ppt Temperature Compensation: Automatically by an integrated thermistor Permissible Overpressure: 0.5 bar Typical Response Limited: >25mg/l Response Time: T90=30s, T95=37s Zero-point Adjustment: Not necessary Calibration: Manual using water saturated air Material of Construction: PVC, silicone, polycarbonate, stainless steel Dimensions: Diameter approx. 43.7mm OD, length 203mm Maintenance intervals: Manual calibration 3-12 months, lumiphore change 12 months Warranty: The shorter of 24 months from the date of manufacture or 12 months from date of first use Interferences: High levels of hypochlorite ®RDO is a registered trademark of In Situ Inc. Boulder Colorado Principle of Operation The sensing element (lumiphore) is activated, or excited when illuminated with a blue light. When activated, the lumiphore then emits blue light in an intensity that is inversely proportional to the amount of oxygen present in the water. There is also a time delay between the peak emission of blue light and peak response of fluoresced red light. The amount of delay is inversely proportional to the amount of oxygen present. This time delay can be expressed as a phase shift between the wave patterns of incident blue light and the fluoresced red light. This is in turn reported by the electronics into a ppm or mg/l reading of Dissolved Oxygen. The advantages of this technology are that it is more stable than traditional electrochemical devices and far more resistant to abrasion. By using the state of the art sensor and electronics together the reliability, accuracy, and flexibility of the OxySense Meter is far superior to that of its competitors. Autoclean and Auto-verification The OxySense Meter is the first of its kind in the world to offer automatic in situ sensor verification as an option. The OxySense is able to reduce maintenance by automatically checking it’s sensor operation at user defined time intervals. Calibration on the In-Situ sensor is normally required only once per annum so with the automatic sensor verification option and the self clean option the sensor may not need to be inspected at all for a full year.
  5. 5. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs SoliSense® - Turbidity and Suspended Solids Monitor With the SoliSense® range of Suspended Solids/Turbidity analyzers you get a world's first sensor. The first sensor to successfully incorporate four measuring technologies. For multiple measuring ranges the one sensor can monitor Turbidity and Suspended Solids from 0.02 NTU to 8% solids in one sensor. A less expensive SoliSense® is available for 0-10 NTU. ● Autoclean optical sensor ● Stable and reliable - excellent process control ● Suitable for all potable, waste and process waters ● Up to 6 months between maintenance ● Up to 3 months between calibration ● From 0.02 NTU to 8% Solids The SoliSense® sensors are available with different controllers giving you the same great performance with different communication, display, and control options. With the SoliSense range of suspended solids meters, you get everything that you need - and nothing that you don't, without sacrificing the quality of measurement. For more information please see the individual brochure - CRONOS® , CRIUS® and CRATOS CRONOS® SoliSense® • High Quality and Multilingual • Lowest Purchase Cost • Up to 3 sensors • Options include: – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS SoliSense® • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Datalogging • Up to 12 sensors • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® SoliSense® • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors • All CRONOS® options plus: – texting alarms via GSM – remote internet access via GPRS – automatic cleaning – automatic calibration – integrated flow control
  6. 6. Principle of Operation Multi-beam Technology Each probe is equipped with 2 light sources and 4 detectors. Each light source uses long-life emitters (at least 20,000 operating hours), and these are turned off when not required to conserve energy and extend the life. By using multiple light emitters and detectors in a single probe it is possible to: • Measure solids from 0.02 NTU to 8% solids • Monitor and compensate for fouling of the optics • Monitor and compensate for aging of the optics • Measure the forward scattering of light (low NTU values) • Measure the side scattering of light (ISO7027 requires a 90° side scatter measurement). (NTU) • Measure transmitted light (low % solids) • Measure the back scatter of light (higher % solids) The electronics provide a fully scalable output allowing the CRIUS® SoliSense® to measure any part, or the whole of the scale from 0.02 NTU to 8% solids. The sensor probe comes equipped with the capability of having a water jet regularly sweep over the optical lenses keeping them clean. If you have an application that ranges from low NTU all the way to %age solids then the CRIUS® SoliSense® is certainly the monitor for you! With only 3 or 4 calibration points you can accurately monitor your process all the way from low NTU to 8% solids. Specification Signal: The SoliSense® sensor provides up to four user selectable outputs, which are proportional to the measured concentration range selected Range: Selectable Accuracy: < 1% of measuring range end value Reproducibility: 0.5 % Weight: Installation type ca. 1.5kg Immersion type ca. 0.5kg Comms: TCP/IP, Modbus, RS232, RS485, 4-20mA Power supply: 100-250 V AC, 50/60 Hz 8-36 V DC Ambient temperature: -20 to +50°C Process temperature: 0-50°C Lamp Source: IR LED Housing Materials: Wetted parts, stainless steel, quartz glass, and polypropylene Cleaning Cycles: User settable cleaning cycle time and cleaning time Cleaning: Autoclean water or air jet Reliability: Simplified design with no moving parts Durability: Hard-wearing stainless steel/epoxy/quartz glass Pipe Options: Pipe connection, pipe insertion or immersion versions to suit individual applications Enclosure rating: IP65 Display: Value and Alarms at the same time, controller dependent SoliSense Installation The probes are stainless steel and are built to work in the demanding environment of a WwTW. If you want to monitor solids at any point in your waste water treatment plant, this instrument has the self cleaning sensor and accessories to do it, even if other instruments have failed. By Pass Insertion Dip
  7. 7. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control HaloSense - Total and Free Chlorine Analyzer For more information please see the individual brochure - CRONOS® , CRIUS® and CRATOS CRONOS® HaloSense • High Quality and Multilingual • Lowest Purchase Cost • Up to 3 sensors • Options include: – pH compensation – optical isolation for I/O – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS HaloSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Datalogging • Up to 12 sensors • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Datalogging • Sophisticated Comms and Control • Up to 6 sensors • All CRONOS® options plus: – texting alarms via GSM – remote internet access via GPRS – automatic cleaning – automatic calibration – integrated flow control "In my opinion the Pi chlorine analysers are simply the best in the world" John Clark, USA The HaloSense range of Chlorine Analysers, Residual Chlorine Controllers and Chlorine Monitors utilise the very latest and best chlorine sensors available in the world today. They are membrane devices which are insensitive to changing pH, use no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs. ● Amperometric sensors - accepted under US EPA method 334.0 ● No chemical reagents - lower cost of ownership ● Stable and reliable - excellent process control ● Suitable for all potable, process and salt waters ● Up to 6 months between maintenance ● Up to 3 months between calibration The HaloSense sensors and flow cells are available with different controllers giving you the same great performance with different communication, display, and control options. With the HaloSense range of residual chlorine analyzers, you get everything that you need - and nothing that you don't.
  8. 8. Specification Chlorine Sensor Probe Type: Membrane covered potentiostatic chrono amperometric three-electrode system Measurand: Total Chlorine or Free Chlorine Range: 0.01-1, 0.01-2, 0.01-5, 0.01-10mg/l (ppm 0-200mg/lppm)*2 Resolution: 0.01mg/l (ppm) Reproducibility: ±5 % Stability: -2 % per month (without calibration) Working electrode: Gold Counter electrode: Stainless Steel Reference electrode: Silver / silver halide Membrane material: Micro-porous hydrophillic membrane Flow rate: Approximately 0.5l/min (min 0.2l/min) Temperature range: >0 to <50°c Temperature compensation: Automatically by an integrated thermistor pH-range: pH 4 up to pH 9 First-polarisation time: 120 min Re-polarisation time: 30 min Response time: T90: approx.120 seconds Zero-point adjustment: Not necessary Calibration: Manual using DPD or Automatic Housing material: PVC, silicone, polycarbonate stainless steel Dimensions: Diameter approx. 25mm, length 175mm Maintenance intervals: Membrane: 12-18 months Electrolyte: 3-6 months Interferences: High levels of other oxidants such as Ozone and Chlorine Dioxide *2 The 0-200mg/l sensor is a 2 electrode sensor that is sensitive to pH variation Principle of Operation The membraned amperometric chlorine sensors, are enhanced with a third, reference electrode*1 which eliminates zero drift. Its unique design means that pH correction is not usually required at all, completely eliminating reagents. In addition to the state of the art potentiostatic chrono- amperometric free chlorine and total chlorine sensors, the HaloSense range of residual chlorine analyzers has all the functionality that you need, and more. Simply choose the CRONOS, CRIUS® or CRATOS controller to give you the highest quality chlorine monitor, with all the functionality you need at the lowest price possible. This means that you pay for everything that you need and nothing you don't, without sacrificing the quality of measurement! Autoflush and AutoCal As described in seperate brochures, the HaloSense can come equipped to automatically clean itself or calibrate at user defined intervals with all the benefits of no operator intervention for 6 months. The Autoflush is particularly useful in food preparation, pulp and paper, and many applications where there is likely to be a build up of solids in the sample. The AutoCal is used to give completely operator free operation for up to 6 months. Water Treatment • Chlorine Dosing • Remote Sites • Cooling Towers • Food Preparation • Paper Mills • Secondary Chlorination Anywhere you have a requirement to measure residual free or total chlorine is a suitable application for the HaloSense. The HaloSense chlorine monitor range is particularly suited to working in sites where reliability and ease of use are most important. pH Compensation For some applications with high and variable pH, pH compensation can improve the accuracy of the chlorine readings. For pH compensation to be valid it must be done with the highest quality pH sensors and with chlorine sensors that have a reduced susceptibility to varying pH, such as those used in the HaloSense range of chlorine analyzers.*1 *1 For more details please see technical notes
  9. 9. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control OzoSense - Residual Ozone Analyzer The OzoSense range of Ozone Analyzers, Ozone Controllers and Ozone Monitors utilise the very latest and best ozone sensors available in the world today. They are membrane devices which are insensitive to changing pH, use no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs. ● Stable and reliable - excellent process control ● Suitable for all potable, process and salt waters ● Up to 6 months between maintenance ● Up to 3 months between calibration ● Does not respond to residual chlorine ● Resistant to detergents in the water The OzoSense sensors and flow cells are available with different controllers giving you the same great performance with different communication, display, and control options. With the OzoSense range of residual ozone analyzers, you get everything that you need - and nothing that you don't, saving money without compromising the quality of measurement. For more information please see the individual brochure - CRONOS® , CRIUS® and CRATOS CRONOS® OzoSense • High Quality and Multilingual • Lowest Purchase Cost • Up to 3 sensors • Options include: – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS OzoSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Up to 12 sensors • Datalogging • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® OzoSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors • All CRONOS® options plus: – texting alarms – remote internet access – automatic cleaning – automatic calibration – integrated flow control "We have had excellent success with Pi's Ozone Analysers" Kahraman Kalyoncu, Turkey
  10. 10. Specifications Ozone Sensor Probe Type: Membraned covered amperometric polarographic two-electrode system Measurand: Residual Ozone O3 Range: 0-05-0.2, 0.05-2, 0.05-5, 0.05-10 mg/l(ppm) Resolution: 0.01mg/l (1 ppb) Reproducibility: ±5% Stability: -1% per month (without calibration) Working Electrode: Cathode made of gold Counter Electrode: Silver /silver halide Membrane Material: Micro-porous hydrophillic membrane Flow Rate: Approx 0.5 l/min (min 0.2 l/min) Temperature Range: >0 up to 50°c Temperature Comp: Automatically by an integrated thermistor (temp changes <5°c p/hr) pH Range: pH 2 up to pH 11 Permissible Overpressure: 0.5 bar First-polarisation Time: 120mins Re-polarisation Time: 30mins Zero-point Adjustment: Not Necessary Calibration: Manual using a suitable ozone test kit Every 1 week to 3 months, application dependent Housing Material: PVC, silicone, polycarbonate, stainless steel Dimensions: Diameter approx. 25mm, length 175mm Maintenance intervals: Membrane: Yearly Electrolyte: Every 3 to 6 months Interference: Cl2 negligible, ClO2 6% Principle of Operation The membraned amperometric ozone sensors are two electrode sensors which operates at an elevated applied potential which in turn eliminates zero drift. Its unique design means that no reagents or buffers are required at all. In addition to the state of the art amperometric chlorine dioxide sensors the OzoSense range of ozone analyzers has all the functionality that you need, and more. Simply choose the CRONOS, CRIUS® or CRATOS controller to give you the highest quality ozone monitor, with all the functionality you need, at the lowest price possible. This means that you pay for everything that you need and nothing you don't, without sacrificing the quality of measurement. Autoflush As described in a seperate brochure, the OzoSense can come equipped to automatically clean itself at user defined intervals with all the benefits of no operator intervention for 6 months. The Autoflush is particularly useful in food preparation, pulp and paper, and many applications where there is likely to be a build up of solids in the sample. Water Treatment • Ozone Dosing Control • Remote Sites • Cooling Towers • Food Preparation • Hospitals • Secondary Ozonation Anywhere you have a requirement to measure residual ozone is a suitable application for the OzoSense. The OzoSense ozone monitor range is particularly suited to working in sites where reliability and ease of use are most important. The sensor is resistant to the presence of tensides making it suitable for use in many washing applications. Multi-Sensor Systems The whole range of OzoSense Ozone Monitors and Controllers can be fitted with additional sensors such as more ozone sensors, chlorine, pH and many others. Please ask your local distributor for more details.
  11. 11. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control DioSense - Chlorine Dioxide Analyzer The DioSense range of Chlorine Dioxide Analyzers, and Chlorine Dioxide Monitors utilise the very latest and best chlorine dioxide sensor available in the world today. It is a membraned device which is insensitive to chlorine, uses no reagents, is extremely stable, and has reduced maintenance and reduced whole life costs. ● Amperometric sensors - continuous online ClO2 analyzer ● No chemical reagents - lower cost of ownership ● Stable and reliable - excellent process control ● Suitable for all potable and process waters ● Up to 6 months between maintenance ● No interference from residual chlorine ● Tolerant of water containing detergents The DioSense sensors and flow cells are available with different controllers giving you the same great performance with different communication, display, and control options. With the DioSense range of residual chlorine dioxide analyzers, you get everything that you need - and nothing that you don't. For more information please see the individual brochure - CRONOS®, CRIUS® and CRATOS CRONOS® DioSense • High Quality and Multilingual • Lowest Purchase Cost • Up to 3 sensors • Options include: – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS DioSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Up to 12 sensors • Datalogging • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® DioSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors • All CRONOS® options plus: – texting alarms – remote internet access – automatic cleaning – integrated flow control "These are the best chlorine dioxide sensors we've ever used and we've tested most" Alistair Cameron, UK
  12. 12. Principle of Operation The membraned amperometric chlorine dioxide sensor is a two electrode sensor which operates at an elevated applied potential which in turn eliminates zero drift. Its unique design means that no reagents or buffers are required at all and calibration is a simple one point (no zero required) operation. In addition to the state of the art amperometric chlorine dioxide sensor the DioSense range of controllers has all the functionality that you need. Choose from the CRONOS, CRIUS® or CRATOS controller to give you the highest quality chlorine dioxide monitor, with all the functionality you need, at the lowest price possible. This means that you pay for everything that you need, and nothing you don't, without sacrificing the quality of measurement. Autoflush As described in a seperate brochure, the DioSense can come equipped to automatically clean itself at user defined intervals. The Autoflush is particularly useful in food preparation, pulp and paper, and many applications where there is likely to be a build up of solids in the sample. The DioSense range of chlorine dioxide monitors are particularly resistant to tensides and are therefore particularly useful in food washing applications. Water Treatment • Chlorine Dioxide Dosing Control • Remote Sites • Cooling Towers • Food Preparation • Hospitals • Secondary Chlorination Anywhere you have a requirement to measure residual ClO2 is a suitable application for the DioSense. The DioSense chlorine dioxide monitor range is particularly suited to working in sites where reliability and ease of use are most important. Multi-Sensor Systems The whole range of DioSense Residual Chlorine Dioxide Monitors and Controllers can be fitted with additional sensors such as chlorite or pH. Please ask your local distributor for more details. Cost of Ownership With its reduced maintenance, reduced calibration and reduced spares requirements the DioSense ClO2 analyzers are undeniably the most cost effective ClO2 analyzers available. Specification Chlorine Dioxide Sensor Probe Application: All kinds of water treatment (e.g. bottle washing machine, CIP-plants) Type: Membrane covered, amperometric 2-electrode system Measurand: Chlorine Dioxide Sensor ranges: 0 - 0.15 mg/l ; 0-2 mg/l; 0-5 mg/l; 0-10 mg/l; 0-20 mg/l Resolution: 0 - 01 mg/l Repeatability: < 1% Working Temperature: >0 up to 50°c Temperature Compensation: Automatically, by an integral temperature sensor (temp changes <5°c) Max. allowed Working Pressure: 1,0 bar, no pressure impulses and/or vibrations Flow Rate: Approx. 0.5 l/min (min 0.2 l/min) pH Range: pH1 to pH11 Run-in Time: First start-up approx. 1h Response Time: T90: approx. 1.5mins. Zero Point Adjustment: Not necessary Calibration: Manual using a suitable ClO2 test kit Every 1 week to 3 months, application dependent Interferences: Cl2: does not interfere O3: is measured with a sensitivity 25 times higher than ClO2 1% sulfuric acid or 1% nitric acid in the water have no influence to the measuring behaviour Dimensions: Diameter: approx. 25mm; Length: approx. 175mm (4-pole screw connector) approx. 220mmm (4-20mA, 2-pole terminal) Storage: Frost-protected, dry and without electrolyte no limit Used membrane caps can not be stored! Maintenance: Monitor measuring signal regularly. Change of membrane cap: Yearly (depending on the water quality) Electrolyte: Every 3 - 6 months
  13. 13. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control pHSense - Continuous Online pH Meter The pHSense range of pH Analysers from Pi utilise the very latest and best pH sensors available in the world today for measuring the online pH of any aqueous solution. They are patented polymer filled sensors with integral reference which uses no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs. ● Up to 3 years continuous operation ● 2 years warranty ● Stable and reliable - excellent process control ● Suitable for all potable and process waters ● Suitable for very low conductivity waters ● Integral temperature compensation The pHSense sensors and flow cells are available with different controllers giving you the same great performance with different communication, display, and control options. With the pHSense range of online pH meters, you get everything that you need - and nothing that you don't. For more information please see the individual brochure - CRONOS®, CRIUS® and CRATOS CRONOS® pHSense • High Quality and Multilingual • Lowest Purchase Cost • Long Life • Up to 3 sensors (1 pH) • Options include: – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS pHSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Up to 12 sensors (6 pH) • Datalogging • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® pHSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors (3 pH) • All CRONOS® options plus: – texting alarms – remote internet access – PID Control – automatic cleaning – automatic calibration – integrated flow control "The pH sensors from Pi are much more stable than others we've tried and they seem to last forever" Tom Haslehurst, UK
  14. 14. Specification pH Electrodes Type: Combined reference, and measuring electrode Reference Type: Patented electrochemically active solid polymer junction pH Range: 0-14 Slope: 95-102% Pressure range: 0-10Bar Long Term Stability (drift): <0.01 pH/Hour Reproducibility: <0.01 pH EO: -25mV to +25mV Electrode Resistance: 100-500 Mega Ohms Response Time: 95% of step pH2 to pH12 <5s Temperature Range: 0-90°C Cable length: 6m (any length optional, max. 10 m) Shelf Life: 12 Months ATC: PT100 Estimated life: 12-24 months application dependent Warranty: 1 year Principle of Operation At the Heart of the CRONOS pHSense are the pH electrodes. These electrodes are patented and have a large area electrochemically active solid polymer junction. This innovative design makes the electrodes more responsive and with a longer life than ordinary electrodes (typically 3 years). Although they command a higher price in the market place these sensors are more than cost effective with their longer life and considerably lower maintenance requirements, typically only needing calibration once per two or three months. Despite all of the additional functionality that this unit has to offer, the purchase costs are less than or comparable to, its competitors. Autoflush and AutoCal As described in seperate brochures, the pHSense can come equipped to automatically clean itself or calibrate at user defined intervals with all the benefits of no operator intervention for 6 months. The Autoflush is particularly useful in food preparation, pulp and paper, and many applications where there is likely to be a build up of solids in the sample. The AutoCal is used to give completely operator free operation for up to 12 months. Water Treatment • Remote Sites • Cooling Towers • Food Preparation • Paper Mills Anywhere you have a requirement to measure pH is a suitable application for the pHSense. The pHSense pH meter range is particularly suited to working in sites where reliability and ease of use are most important. One area where the pHSense excels is in the measurement of pH in very low or ultra clean water. Multi-Sensor Systems The whole range of pHSense pH meters can be fitted with additional sensors such as chlorine or ORP. Please ask your local distributor for more details. "Multi-sensor systems can save considerable sums without compromising measurement integrity" Dr Craig Stracey, UK
  15. 15. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control ORPSense - Continuous Online ORP Meter The ORPSense range of ORP Meters from Pi utilise the very latest and best ORP sensors available in the world today for measuring the online Redox potential of any aqueous solution. They are platinum ball based sensors with integral reference electrodes which use no reagents, are extremely stable, and have reduced maintenance and reduced whole life costs. ● Up to 3 years continuous operation ● 2 years warranty ● Stable and reliable - excellent process control ● Suitable for all potable and process waters ● Suitable for very low conductivity waters ● Integral temperature compensation The ORPSense sensors and flow cells are available with different controllers giving you the same great performance with different communication, display, and control options. With the ORPSense range of residual chlorine analyzers, you get everything that you need - and nothing that you don't. For more information please see the individual brochure - CRONOS®, CRIUS® and CRATOS CRONOS® ORPSense • High Quality and Multilingual • Lowest Purchase Cost • Long life • Up to 3 sensors • Options include: – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – flow switch input – PID control CRATOS ORPSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Up to 12 sensors • Datalogging • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® ORPSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors • All CRONOS® options plus: – texting alarms – remote internet access – automatic cleaning – automatic calibration – integrated flow control "The ORP sensors from Pi are much more reliable than others and they have a very long life" Bhupendra Patel, Africa
  16. 16. Specification ORP Electrodes Type: Platinum Ball Reference Type: Patented, solid state reference ORP Range: -1999 to 1999mV Slope: 95-102% Pressure range: 0-10Bar Long Term Stability(drift):<0.1 mV/Hour Reproducibility: <0.1 mV Electrode Resistance: 150 mega Ohms Response Time: 95% of step <5s Cable length: 6m (any length optional - max 10m, - 1500mV to +15mV) Shelf Life: 12 Months ATC: None Estimated life: 12-18 months application dependent Temperature: 0-90 C Lenght: 145mm (5,7") Dyameter: 26.5 mm (") Water Treatment • Remote Sites • Cooling Towers • Food Preparation • Paper Mills Anywhere you have a requirement to measure ORP is a suitable application for the ORPSense. The ORPSense ORP meter range is particularly suited to working in sites where reliability and ease of use are most important. Multi-Sensor Systems The whole range of ORPSense ORP meters can be fitted with additional sensors such as chlorine or pH. Please ask your local distributor for more details. "Multi-sensor systems can save considerable sums without compromising measurement integrity" Dr Craig Stracey, UK Principle of Operation At the Heart of the CRONOS ORPSense are the ORP electrodes. These electrodes are patented and are filled with a polymeric gel. This innovative design makes the electrodes more responsive and with a longer life than ordinary electrodes (up to 3 years). Although they command a higher price in the market place these sensors are more than cost effective with their longer life and considerably lower maintenance requirements, typically only needing calibration once per two or three months. Despite all of the additional functionality that this unit has to offer, the purchase costs are less than or comparable to, its competitors! Autoflush and AutoCal As described in seperate brochures, the ORPSense can come equipped to automatically clean itself or calibrate at user defined intervals with all the benefits of no operator intervention for 6 months. The Autoflush is particularly useful in food preparation, pulp and paper, and many applications where there is likely to be a build up of solids in the sample. The AutoCal is used to give completely operator free operation for up to 12 months.
  17. 17. AquaSense - Pool and Spa Controllers Key Benefits ► Significant Cost Savings ► Better Sensors ► Better Control ► Better Bathing Experience ► Reduced CO2 Emissions ► Reduced Electricity Usage ► Reduced Chemical Usage find us at www.processinstruments.net
  18. 18. Introduction The AquaSense range of pool controllers has been designed to three criteria:- • Improved Safety - better sensors lead to better process control which leads to less variation in chlorine residuals even with highly variable bathing load. • Improved Control - better process control leads to reduced chemical usage, lower costs and an improved bathing experience. • Reduced Costs - lower chemical costs, less expensive controllers, hugely reduced electrical usage costs are just a few of the ways that the AquaSense can save you money which can pay for a new controller in just a few months. Sensors Traditionally pool chemistry has been controlled by using ORP (Redox) or Residual Chlorine Sensors. The quality of the sensors has a huge effect on the ability of the controller to maintain a safe and pleasant bathing water. The sensors used in AquaSense controllers are the best available in the world today and are exactly the same sensors that are used to monitor and control drinking water in many municipal drinking water plants worldwide. Chlorine Sensors Three sensors are available to measure; free chlorine, total chlorine, or chlorine in the presence of cyanuric acid. All of these sensors have a long life (10 years) with reduced maintenance and calibration requirements. they are very high quality and very easy to own. Being able to accurately measure the chlorine and respond to varying bathing loads means that pools and spas can operate at lower chlorine levels, reducing the formation of unpleasant combined chlorines and reducing the chemical usage, thereby reducing costs and reducing emissions, all while providing a better bathing experience. pH and ORP Sensors The pH and ORP sensors are made specifically for the AquaSense controllers and come with either a 12 or 18 month warranty. These AquaSense pH and ORP sensors are also exactly the same as those used in the water industry and are not the low cost, low quality sensors that are often supplied into the Pool Industry. Remote Access & Text Alarms More and more pools are maintained by service professionals that are based off-site and the ability of these engineers to respond quickly and effectively to a process upset at a pool depends on them getting the correct information as soon as possible. The CRIUS® AquaSense and the CRATOS AquaSense can come equipped with their own integral GSM, GPRS or CDMA modem. This in turn allows anyone with the appropriate security level to receive text alarms relating to the chemistry in the pool or spa and also allows them to log in to the controller over the internet and perform almost any action that they could do if they were standing in front of the instrument. (For an online demonstration of this please go to www.processinstruments.net/products/remote-access- demo.php) The highly sophisticated pro-active text alarms and remote access capability of the CRIUS® AquaSense and CRATOS AquaSense, means that:- • Improved Communication - the right people know as soon as something happens. • Improved Control - your expert is in your pool room no matter where they are. • Less Time to Fix Problems - the time taken to fix any problems is greatly reduced. • Reduced Costs - time, cost and car exhaust emissions are reduced. "Since installing two CRIUS AquaSense in 2008, our control over the pool chemistry has greatly improved, leading to a better bathing experience for our customers" Ron Sykes, UK "I have installed many pool controllers over the years and the quality of the AquaSense sensors is the best there is" Lester Simmonds, UK "Being able to remotely access and control the AquaSense pool controller allows us to provide a better service to our customers and a better bathing experience to theirs' " Steve Murphy, UK
  19. 19. BMS Many leisure facilities are now fitted with sophisticated BMS (Building Management Systems) and all three Pool and Spa controllers are able to communicate directly to the BMS whatever system it might be. Each of the Pool and Spa controllers from Pi can come equipped with a range of communication protocols including LAN, Profibus, Modbus and more traditional analogue and digital outputs. Save Money and the Planet! Most pool recirculating pumps are over specified for the duty required and as such there is scope to turn them down and save considerable amounts of money on the electricity usage. Whenever you save electricity you are reducing the CO2 emissions and carbon footprint of your pool and spa and for many organisation reducing CO2 emissions is a significant factor in choosing which equipmrnt to purchase. It might not save the planet but it is a good start! In order to turn down the pool recirculating pump the pump motor must be fitted with an invertor. The question then arises - on what basis do we turn the motor down? Each pool has a minimum turnover set by the manufacturer or consultant at the time of installation. The CRIUS® or CRATOS AquaSense allows the user to turn down the recirculating pump during periods of non pool use (overnight) to the minimum level. While the pool is being used the recirculating pump motor is set based on chlorine demand which is proportional to bathing load. This ability to control the recirculating pump based on chlorine demand means that pool operators can save significant sums of money on electricity during the day when electricity costs the most. CRIUS® AquaSense • High Quality and Multilingual • Up to 2 Pools • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • All CRONOS® options plus: – texting alarms – remote internet access – invertor control – integrated flow control or flow regulation CRATOS AquaSense • High Quality and Multilingual • Up to 4 Pools • Medium Cost • Colour Touchscreen • Datalogging • All CRONOS® and CRIUS® options: CRONOS® AquaSense • High Quality and Multilingual • Single Pool • Lowest Purchase Cost • Up to 3 sensors typically chlorine and pH or Redox and pH • Options include: – optical isolation for I/O – 4-20mA outputs – relays (solid state or mechanical) – modbus TCP/ASCII/RTU – profibus – HART – flow switch – on/off control – analogue control – PID control "The invertor control on the CRIUS AquaSense is saving our customers considerable sums of money, often paying for the controller within a year." John Moffatt, UK
  20. 20. High quality sensors Multilingual Set up wizard System logger Datalogger Event logger PID controls Single pool Up to 2 pools Up to 4 pools Analogue outputs V and mA Isolated universal inputs & outputs Multi line display Coloured backlight Colour screen Touch screen Integrated modem and text alarms Up to 4 relays Up to 8 relays Up to 16 relays Remote internet access GSM/GPRS Remote Access LAN Profibus Modbus ASCII/RTU serial Modbus TCP (LAN enabled) HART AC & DC versions Invertor Control CRONOS® ● ● ● ● Opt ● ● Opt ● ● ● Opt Opt Opt Opt ● CRIUS® ● ● ● ● ● ● Opt ● ● ● ● N/A ● Opt Opt ● Opt Opt Opt Opt Opt Opt ● Opt CRATOS ● ● ● ● ● ● Opt ● ● ● ● N/A ● ● Opt ● Opt Opt Opt Opt Opt Opt ● Opt Texting via GSM Modem Remote Access via GPRS/CDMA Modem
  21. 21. PolySense - Polymer Control for Sludge Dewatering The PolySense utilizes an online measurement of the cake dry solids and an online measurement of the solids in the centrate/filtrate to control the polymer addition and the sludge feed rate, in order to optimise the process. This gives you: • Typically 25% reduction in polymer usage • Increased cake solids • Reduced transportation costs • Less foaming • Reduced solids in the centrate/filtrate • Reduced operator reliance • Capital payback, often in less than 18 months "PolySense has revolutionised the dewatering of our sludge, we get drier cake, less cost and less process upsets", David Bennett, UK Why the Need for Automatic Polymer Control? The Problem The consequences of overdosing polymer to a dewatering device such as a centrifuge are much less than the consequences of underdosing and with time pressures on operators, this inevitably leads to overdosing on most centrifuges and belt filters. This overdosing gives the operator a time ‘buffer’ against process variations. Overdosing of the polymer can lead to:- • increased polymer costs • increased solids in the centrate • increased foaming in the centrate • decreased solids in the cake • increased transport costs per tonne of waste • increased load on the works • reduced efficiency of driers and digesters The Solution The PolySense is a simple, but effective and reliable method of controlling the polymer dosing via the polymer dosing pump and in some cases the feed rate to the centrifuge. It does this by making reliable online measurements of the dry solids of the cake, and of the suspended solids in the centrate/filtrate, and in some cases the feed solids. These measurements are the key to the success of the PolySense and the suspended solids instrument includes debubbling technology and self-cleaning where required. Essentially the PolySense measures the suspended solids in the centrate (or sludge feed) and the dry solids in the cake and adjusts the polymer dosing pump, (and in some cases the feed pump), to maintain those ranges of cake solids and centrate suspended solids that produce the best outcomes for the plant. Whilst the PolySense does not monitor or control all aspects of the sludge dewatering equipment such as the speed of the centrifuge, it provides a reliable and much improved process control to the more traditional manual control.
  22. 22. Case History In late 2008 a compliance engineer for one of the UK Waste Water Utilities contacted Pi in order to start the process of determining the best instrumentation to control his Alfa Laval dewatering centrifuge. He had determined that by manually controlling the centrifuge and constantly making small adjustments to the poly dose he could significantly reduce his poly usage whilst maintaining the cake solids. Having determined this manually he approached Pi seeking to automate the process. This was a perfect application for the PolySense. In consultation with the engineer, it was determined that he could achieve his goals using a two point measurement system (online cake solids and online suspended solids in the centrate), with the appropriate control algorithm feeding back to the DCS that would in turn control the polymer feed pump. His total cost including installation and commissioning was £26,000 and his average reduction in poly usage was 25% giving a payback inside 18 months. “Although the financial justification for the project was based on polymer savings alone the additional benefits were significant. The reduction in Carbon Footprint is as yet unquantified but significant, and the improved consistency of cake solids has resulted in higher average cake solids and a reduction in transportation costs. The operators have all bought in to the system and are happy that they are freed up to carry out their other duties secure in the knowledge that if anything should go wrong they will be informed via the alarms generated from the control signals. The company are now beginning the process of rolling the system out across other sites.” Multiple Control Options During normal operation the PolySense will control the polymer to keep the Dry Solids in the cake and the Suspended Solids in the centrate to within user selectable ranges. These ranges are set up on commissioning and are likely to give a good compromise on polymer usage, cake solids and loading on the works. There are occasions, however, when reduced polymer isn’t the most important outcome. It may be that there is pressure on the works and reduced loading going back to the head of the works is more important, or perhaps the cake is being transported off-site so the driest possible cake solids is the most important outcome. Each PolySense is equipped with five sets of control settings that can be set up on commissioning to allow the operator to easily select the appropriate control setup for the plant requirements at the time. e.g. • Normal operation • Driest cake • Cleanest centrate • Most consistent cake solids • Least polymer usage GPRS Remote Access is included as standard with CRIUS® PolySense
  23. 23. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control BioSense - Biofilm Monitor The BioSense range of qualitative biofouling monitors provide a relative measure of how much biofilm is building up in your process, allowing you to dose your biocide accordingly or take other appropriate remedial action. ● Legionella control ● Automatic Biocide control ● Can be combined with other sensors ● No maintenance ● Monitor the development of Biofilm ● Shows cleanliness ● Reduced chemical costs The BioSense sensors are available with different controllers to give you the same great performance with different communication, display, and control options. With the BioSense range of biofilm analyzers, you get everything that you need - and nothing that you don't. For more information please see the individual brochure - CRONOS® , CRIUS® and CRATOS CRONOS® BioSense • High Quality and Multilingual • Lowest Purchase Cost • Up to 3 sensors • Options include: – optical isolation for I/O – up to 3 4-20mA outputs – up to 4 relays (solid state or mechanical) – modbus TCP – modbus ASCII/RTU – profibus – HART – PID control CRATOS BioSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Up to 12 sensors • Datalogging • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® BioSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Datalogging • Up to 6 sensors • All CRONOS® options plus: – texting alarms – remote internet access – automatic cleaning – automatic calibration – integrated flow control "Using the BioSense allows us to monitor for biofilm development and then to dose the appropriate biocide" Dr Craig Stracey, UK
  24. 24. Legionella Risk Management Cooling systems and heating systems in e.g. hospitals, airports, government buildings, hotels and very large office blocks can be a source of the Legionella bacterium. The bacteria often grow in biofilms that adhere to the walls of a pipe or other vessel. The BioSense allows you to monitor for the development of this buildup and dose the appropriate chemical to reduce and disperse the biofilm prior to building up a dangerous level of Legionella. Automatic Biocide Control Measuring the residual biocide in a body of water only tells half the story. It tells you that there is little or no biological activity in the bulk water. This doesn't necessarily mean that biofilm isn't building up on the walls of pipes and vessels with the possibility of the development of harmful bacterial colonies. The BioSense allows you to monitor the build up of that biofilm and in turn take the appropriate action AUTOMATICALLY to return the system to a clean condtion. This could be as simple as triggering an alarm for a manual intervention or as complex as increasing biocide levels or shock dosing, all controlled by the BioSense. The BioSense gives you: • Control of system surface biological activity • Treatment effectiveness monitoring • Biocide program optimisation • Indication of a "clean" state Biofilm - The solution The BioSense sensor was developed to provide on-line and real-time indication of biofilm activity on typical metallic surfaces. The probe is designed and operated so that microorganisms in the environment will settle on probe surfaces before they settle on vessel walls or piping. This gives an early warning of potentially dangerous biological activity in the process. By closely tracking biofilm activity on the probe, the BioSense can take remedial action such as increasing the dosing of a biocide or dispersant. The BioSense biofilm controller can also be used to assess the effectiveness of a treatment, or to schedule maintenance activities. By monitoring biofilm activity on surfaces very precisely, costly over- treatment can be avoided and chemical treatments can be optimised, therefore BioSense can: • Reduce the risk of Legionella growth • Reduce the cost of chemical treatment • Reduce maintenance • Increase the efficiency of process equipment Principle of Operation The controller applies a potential between the probe electrodes that causes microorganisms to settle on the surface of the probe before they would settle on the surfaces of a pipe or a vessel. The biological activity of the biofilm creates a signal. A BioSense controller collects and monitors that signal continually. An increasing trend in the signal indicates the onset of biofilm activity on the probe. The controller can then take remedial action automatically by, for example, increasing or decreasing the biocide levels. The CRONOS BioSense is a simple controller capable of automatically changing, dosing regimes etc. With the more sophisticated CRIUS® and CRATOS controllers providing, data logging, remote access and control via GSM.
  25. 25. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control ConductiSense - Online Conductivity Meter The ConductiSense range of Conductivity meters from Pi utilise the very latest and best conductivity sensors available in the world today for measuring the conductivity from 0 to 2,000,000 uS/cm (range selectable) . You can chose between a standard graphite sensor and a more sophisticated toroidal sensor, or stainless steel boiler specific sensors. ● Low purchase cost ● Low cost of ownership ● Resists coating, corrosion and fouling ● Durable Noryl construction ● Easy installation ● Custom tee for in-line mounting The ConductiSense sensors and accessories are available with different controllers giving you the same great performance with different communication, display, and control options. With the ConductiSense range of Conductivity Monitors, you get everything that you need - and nothing that you don't. For more information please see the individual brochure - CRONOS® , CRIUS® and CRATOS CRONOS® ConductiSense • High Quality and Multilingual • Lowest Purchase Cost • Mix and match sensors • Up to 3 sensors • Options include: – up to 3 4-20mA outputs – up to 4 alarm relays (solid state or mechanical) – Modbus TCP/ASCII/RTU – Profibus DP – HART – PID control – flow switch input – optical isolation for I/O CRATOS ConductiSense • High Quality and Multilingual • Medium Cost • Colour Touchscreen • Mix and match sensors • Datalogging • Up to 12 sensors • All CRONOS® and CRIUS® options plus: – lowest cost per point CRIUS® ConductiSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • Mix and match sensors • Up to 6 sensors • Datalogging • All CRONOS® options plus: – texting alarms – remote internet access
  26. 26. Specification Advanced Toroidal Sensor Type: Toroidal Measuring Range: Min 0-20uS; max 0-2,000,000uS selectable Body Material: Noryl Max Temperature: 105 Degrees C Max Pressure: 10 Bar Temp Comp: Optional Cable Length : 6 meters, 6 conductor plus shields Process Connection : 3/4" MNPT for submersion, 2" standard tee with adapter Principle of Operation Graphite Our light industrial conductivity sensor utilises Graphite technology. The durable epoxy body construction provides a rugged and dependable sensor for potable water and clean water. Mount them in-line, in a pipe "T" fitting, or submerse them into a tank. For many applications, the epoxy body conductivity sensors are the lowest cost, most reliable conductivity sensor to use, especially for process applications. Rugged epoxy bodies make the sensors virtually unbreakable. These are an excellent choice to use as standard online conductivity electrodes in the water and related industries. Specification Standard Epoxy Sensor Type: Graphite Measuring range: All ranges from 0 – 199.9 mS/cm Cell Constants: k=0.1 Measuring Surface: Graphite Body Material: Epoxy Max Temperature: 70 Degrees C Max Pressure: 7.5 Bar Temp Comp: Optional Cable: 22 AWG 2-wire or 4-wire, for temperature compensated type. 6 m standard unless otherwise specified Toroidal The toroidal inductive conductivity sensors features a wide measurement range and dependable toroidal technology over the range 0-2,000,000uS/cm . Resistant to corrosion, coatings and fouling common to contacting conductivity sensors, this probe is designed for a trouble free and long service life. Noryl is the standard material of construction and has a wide solvent tolerance and temperature stability to 105 degrees C. All models can be submersed by utilizing the 3/4” MNPT threads on the sensor or installed in 2” NPT tees for in-line deployment. A temperature sensor is built into the conductivity sensor for automatic temperature compensation.
  27. 27. CRIUS® HaloSense • High Quality and Multilingual • Low Cost • Colour Display and Keypad • Sophisticated Comms and Control • All CRONOS options plus: – texting alarms – remote internet access – datalogging – PID control – automatic cleaning – automatic calibration – up to 6 sensors and outputs – integrated flow control Autocalibrator - for free and total chlorine The HaloSense Residual Chlorine Analyzer is the first of its kind in the world to offer automatic calibration as an option. Cleverly engineered and using state of the art electronics the HaloSense Autocalibrator for free and total residual chlorine is able to save customers considerable sums of money by autocalibrating at user-defined timed intervals, without the presence of an operator. • No maintenance for up to 6 months • No calibration for up to 6 months • Low cost of ownership • Optional email/SMS text alarms • Optional remote control via GSM/GPRS modem "The HaloSense Autocalibrator is reliable, dependable and saves a fortune on travelling to remote sites. I am very happy with the ones I've installed." Wayne Burton, UK Principle of Operation The HaloSense membraned potentiostatic chrono amperometric chlorine sensor, is housed within the Autocalibrator. Its unique design means that pH effects are small and pH correction or compensation is not usually required. The Autocalibrator enables the HaloSense Chlorine Analyzer to be operated completely unattended for up to 6 months. At user defined intervals the Autocalibrator takes a sample, removes the chlorine from it by passing it through an activated carbon filter, and then adds the appropriate amount of a chlorine solution to a fixed volume of chlorine free water. This solution of a known chlorine concentration is then passed over the sensor which is allowed to equilibrate and then the sensor is calibrated by the electronics. In addition to the state of the art sensors the HaloSense range of controllers offers an impressive range of communication protocols including Modbus, Profibus, TCP/IP (with webserver), RS485, Relays and 4-20mA outputs. Added to the cost savings of a truly automatic (no operator present), calibration system, some will achieve a replacement payback of only a few months. Autocalibration Whenever a chlorine analyser is calibrated by an operator or technician there is a cost involved and risk of human error. With the HaloSense Autocalibrator the costs of getting to and from a remote site, or the risk of an operator calibrating an analyser incorrectly are eliminated. • Calibration at unsocial hours • When reproducibility is paramount • Remote sites • Skilled personnel not required Water Treatment • Remote sites • Automatic calibration • Chlorine dosing control • Secondary chlorination
  28. 28. What Safeguards are Built-in? In the event of a problem with the calibration, the system will attempt a second calibration. If that too fails then a system fail alarm is given out and the analyser will not accept the new calibration. A system fail alarm will result from any of the following; • A change in calibration of more than 10% from the previous calibration. • An unstable signal from the probe (the rate of change of the signal is monitored thus ensuring that any fault in the calibration process does not produce large errors in the Chlorine Residual reading). • A sensor that doesn’t get within 5% of zero indicates a failed filter or a failing sensor. • A low sample flow or low sample pressure will trigger an alarm. An optional, integral GSM/GPRS modem allows the operator to be advised of an alarm immediately, and the in- built PID control provides flexible chlorine dosing control options. Specification Chlorine Sensor Type: Membrane covered potentiostatic chrono amperometric three-electrode system Measurand: Total Chlorine or Free Chlorine Range: 0.01-1, 0.01-2, 0.01-5, 0.01-10mg/l Resolution: 0.01mg/l (ppm) Reproducibility: ±5 % Stability: -2 % per month (without calibration) Working electrode: Gold Counter electrode: Stainless Steel Reference electrode: Silver / silver halide Membrane material: Micro-porous hydrophillic membrane Flow rate: Approximately 0.5l/min (min 0.2l/min) Temperature range: >0 up to 40°c Temperature compensation: Automatically by an integrated thermistor pH-range: pH 4 up to pH 9,5 First-polarisation time: 120 min Re-polarisation time: 30 min Zero-point adjustment: Not necessary Calibration: Manual using DPD or Automatic Housing material: PVC, silicone, polycarbonate stainless steel Dimensions: Diameter approx. 25mm, length 175mm Maintenance intervals: Membrane: 12-18 months Electrolyte: 3-6 months Calibration reagent: 6 months Interferences: High levels of other oxidants such as Ozone and Chlorine Dioxide The CRIUS® HaloSense Controller offers: • Remote access via GPRS • Text alarms • PID control • Automatic cleaning • Up to 6 sensors and outputs • Integrated flow control • Autocalibration • Profibus • Modbus
  29. 29. Autoflush - keeping sensors cleaner for longer Key Benefits • Frequent flushing prevents build-up of solids • Reduced maintenance • Prolonged sensor life • Suitable for pH/ORP/Cl2/O3/ClO2 • User selectable flush duration • User selectable flush frequency • ‘Flush now’ facility • Simple, infrequent maintenance Principle of Operation The idea is simple and effective….every x minutes, (the user can adjust x) the sample drains away and the sensor and sensor housing is flushed with clean water. This water flushes the whole of the inside of the sensor housing taking away any build-up of solids to drain. The repeated flushing of the housing and sensor helps prevent the build-up of solids and so prolongs the life of the sensor and reduces the maintenance. For waxy or fatty build-ups warm water can be used to flush the sensors. As standard heavy duty pinch valves ensure reduced maintenance over a long life. Applications • pH on paper mills • ORP in scrubbers • Chlorine in food disinfection • pH in slurries • Ozone in food washing • Pre-chlorination • Chlorine in paper mill stock • Chlorine in waste water "The Autoflush from Pi has meant that we can now measure chlorine applications in dirty water applications reliably which previously we couldn't", Eddy Scott, UK

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