The Jack Doheny Companies Pipeline Inspection Division offers a wide range of products for the industry with an aim to bring some of the industry’s best equipment to our pipeline inspection customers.
Sensorex . . . Your Water Quality Matters!Tim Schilz
Sensorex is a global leader in design and manufacture of quality sensors for water quality and industrial process applications. The company offers more than 2000 sensor packages for pH, ORP, Conductivity, Dissolved Oxygen, UV Transmittance and other specialty measurements, as well as a full line of sensor accessories. Its expert technical support engineers solve analytical sensor challenges with custom designs and off the shelf products. Visit the Sensorex website at www.Sensorex.com.
Sensorex is a Halma company. Halma makes products for hazard detection and life protection and is a market leader in specialist electronic, safety and environmental technologies. Visit the Halma web site at www.halma.com.
The Jack Doheny Companies Pipeline Inspection Division offers a wide range of products for the industry with an aim to bring some of the industry’s best equipment to our pipeline inspection customers.
Sensorex . . . Your Water Quality Matters!Tim Schilz
Sensorex is a global leader in design and manufacture of quality sensors for water quality and industrial process applications. The company offers more than 2000 sensor packages for pH, ORP, Conductivity, Dissolved Oxygen, UV Transmittance and other specialty measurements, as well as a full line of sensor accessories. Its expert technical support engineers solve analytical sensor challenges with custom designs and off the shelf products. Visit the Sensorex website at www.Sensorex.com.
Sensorex is a Halma company. Halma makes products for hazard detection and life protection and is a market leader in specialist electronic, safety and environmental technologies. Visit the Halma web site at www.halma.com.
In-Situ Inc., manufacturer of reliable, top quality water monitoring equipment, adds to their already comprehensive line of portable and fixed installation water quality measurement instruments with the Aqua Troll 500. The instrument is a multiparameter sonde that can be used as a handheld device, with data transmitted to a smartphone running the Android data collection app. For fixed installations, the Aqua Troll can be integrated wirelessly into a telemetry system to deliver collected data to remote stations.
Documents
What are the Documents Required to start a packaged drinking water plant in India ?
Once you have taken a decision to start Mineral Water Plant In India, you will need to comply some government authorities :-
The List of Documents required to start a packaged drinking water plant in India:-
1. SSI REGISTRATION :-
The most basic Document needed for any small scale industry in India. Once you have an SSI registration , you can avail many government facilities. Usually this is available at the District Industries Centre , just check. It is not very difficult to get this.
With Recent Reports , Udyog Aadhar Card has replaced the SSI Registration. Refer to this post
2. BIS Registration [ISI Mark Certificate]
This is mandatory for Packaged Drinking Water. The Standard is – IS 14543.
all abut isi
3. POLLUCTION CONTROL CERTIFACATE. :-
This is available from the Local Pollution Board Office. Simple Procedure.
4. ALL REQUIRED TEST REPORTS OF RAW AND PURE WATER.
Can be had from a local Test Laboratory , just locate a Water Testing Lab ; Check at the Local Drinking Water Testing Laboratory. Just Go with your sample Water of 1 Ltr. Take sample from 2-3 locations & get it tested for Packaged Drinking Water.
5. PEST CONTROL CERTIFICATE.
Approach a local pest Control guy, he will provide this.
6. CHEMIST-DEGREE AND MEDICAL CERTIFICATE.
7. MICROBIOLOGIST – DEGREE AND MEDICAL CERTIFICATE.
8. MEDICAL CERTIFICATE FOR WORKERS –4.
9. N.O.C. OF GRAMPANCHAYAT (IF APPLICABLE)
10. REGISTRATION OF TRADEMARK.
This will be very important. Approach some of the trademark consultants in your are. It is a lengthy procedure, start early.
all abut isi
11. DOCUMENT REGARDING OWNERSHIP/LEASE OF LAND.
12. MEMORANDUM OF ASSOCIATION OF COMPANIES/PARTNERSHIP DEED
IF APPLICABLE.
13. Electrical load sanction
14. Sanction layout plan
15.Land if not in Indl Area – should be NA
Consult local experts for Additional Documents as per your local Governing Bodies
There will be many agencies with whom you will be required to work at a time. So , you will need to make a proper plan with crystal clear laid out duties & responsibilities for all of them. I suggest you make an excel sheet & make use of Google Calend
Wireless Flow Temperature Sensor Calibration John Gibbs
A look at a recent time sensitive project requiring a non-invasive, temperature sensor solution to provided the means of calibrating the flowing temperature of the production flow in the system during the remaining life of the oil field.
ILS Automation extends the useful life of a bioreactor in the pharmaceutical industry by replacing outdated and worn controls and components. Case study tells how they did it.
Wearable Multi-Gas Detector for Personnel SafetyArjay Automation
The latest in wearable 4-gas detection. Just clip it on and get the job done. Because for 2 years this multi-gas detector is on continuously.
2 year continuous runtime. Always on.
Simple one-button operation
Low cost of ownership.
Monitors H2S, CO, LEL, O2
No hassle. No charging. No sensor/battery replacements
In-Situ Inc., manufacturer of reliable, top quality water monitoring equipment, adds to their already comprehensive line of portable and fixed installation water quality measurement instruments with the Aqua Troll 500. The instrument is a multiparameter sonde that can be used as a handheld device, with data transmitted to a smartphone running the Android data collection app. For fixed installations, the Aqua Troll can be integrated wirelessly into a telemetry system to deliver collected data to remote stations.
Documents
What are the Documents Required to start a packaged drinking water plant in India ?
Once you have taken a decision to start Mineral Water Plant In India, you will need to comply some government authorities :-
The List of Documents required to start a packaged drinking water plant in India:-
1. SSI REGISTRATION :-
The most basic Document needed for any small scale industry in India. Once you have an SSI registration , you can avail many government facilities. Usually this is available at the District Industries Centre , just check. It is not very difficult to get this.
With Recent Reports , Udyog Aadhar Card has replaced the SSI Registration. Refer to this post
2. BIS Registration [ISI Mark Certificate]
This is mandatory for Packaged Drinking Water. The Standard is – IS 14543.
all abut isi
3. POLLUCTION CONTROL CERTIFACATE. :-
This is available from the Local Pollution Board Office. Simple Procedure.
4. ALL REQUIRED TEST REPORTS OF RAW AND PURE WATER.
Can be had from a local Test Laboratory , just locate a Water Testing Lab ; Check at the Local Drinking Water Testing Laboratory. Just Go with your sample Water of 1 Ltr. Take sample from 2-3 locations & get it tested for Packaged Drinking Water.
5. PEST CONTROL CERTIFICATE.
Approach a local pest Control guy, he will provide this.
6. CHEMIST-DEGREE AND MEDICAL CERTIFICATE.
7. MICROBIOLOGIST – DEGREE AND MEDICAL CERTIFICATE.
8. MEDICAL CERTIFICATE FOR WORKERS –4.
9. N.O.C. OF GRAMPANCHAYAT (IF APPLICABLE)
10. REGISTRATION OF TRADEMARK.
This will be very important. Approach some of the trademark consultants in your are. It is a lengthy procedure, start early.
all abut isi
11. DOCUMENT REGARDING OWNERSHIP/LEASE OF LAND.
12. MEMORANDUM OF ASSOCIATION OF COMPANIES/PARTNERSHIP DEED
IF APPLICABLE.
13. Electrical load sanction
14. Sanction layout plan
15.Land if not in Indl Area – should be NA
Consult local experts for Additional Documents as per your local Governing Bodies
There will be many agencies with whom you will be required to work at a time. So , you will need to make a proper plan with crystal clear laid out duties & responsibilities for all of them. I suggest you make an excel sheet & make use of Google Calend
Wireless Flow Temperature Sensor Calibration John Gibbs
A look at a recent time sensitive project requiring a non-invasive, temperature sensor solution to provided the means of calibrating the flowing temperature of the production flow in the system during the remaining life of the oil field.
ILS Automation extends the useful life of a bioreactor in the pharmaceutical industry by replacing outdated and worn controls and components. Case study tells how they did it.
Wearable Multi-Gas Detector for Personnel SafetyArjay Automation
The latest in wearable 4-gas detection. Just clip it on and get the job done. Because for 2 years this multi-gas detector is on continuously.
2 year continuous runtime. Always on.
Simple one-button operation
Low cost of ownership.
Monitors H2S, CO, LEL, O2
No hassle. No charging. No sensor/battery replacements
Sources of water, Assessment of domestic and industrial requirement, Impurities in
water, Indian standards for drinking water, Water borne diseases and their control.
CNG Flow Meter
How does CNG Flow Meter work?
One of the popular CNG flow meters is a Thermal Mass Flow Meter. Whenever a fluid of a certain temperature is passed over any substance hotter than the fluid, the heat of the hot substance is taken away because of forced convection by the fluid, and the temperature of that substance drops. This fall in temperature is related to the mass flow of the fluid passing over the substance. If one can measure the amount of heat taken away by the flowing fluid one can calculate the mass flow rate.
https://manasmicro.com/mass-flow-meter/
Our brochure included a comprehensive list of our products, including their features, benefits, and specifications. Additionally, you will also find information about our facilities, such as our manufacturing units, quality control measures, and customer service.
Our company has always been committed to providing our clients with the best possible services, and we believe that this brochure will help you gain a better understanding of our offerings. You will find the brochure informative, visually appealing, and easy to navigate.
We believe that the brochure will be of great interest to you and help you make informed decisions about our products and services. If you have any queries or require further information, please do not hesitate to contact us. We will be happy to assist you in any way possible.
Manas Microsystems Pvt. Ltd., is an Indian flow meter manufacturing company, based in Pune. We are one of the pioneers & leaders in flow instrumentation. We design, manufacture, calibrate & market high-quality range of Electromagnetic Flow Meters, BTU meters, Thermal Mass Flow meters, Differential Pressure Flow meters & Ultrasonic flowmeters & many other related process instruments since 1998. To ensure the reliability of our flow meters, we have our own in house facilities of calibration for Electromagnetic, Ultrasonic Flow Meters and Thermal mass flow meters.
The ultrasonic generator converts the supplied alternating voltage of 50 Hz or 60 Hz to a frequency that corresponds to the operating frequency of the transducer.
The transducer then converts the released electric energy into mechanical acoustic oscillations causing the surrounding fluid to oscillate.
Each oscillation leads to an over-pressure phase or low-pressure phase in the fluid, depending on whether the transducer expands or contracts.
During the low-pressure phase, due to the fluid's limited tensile strength, small cavities form in the fluid; these so-called cavitation bubbles implode during the over-pressure phase.
When the cavitation bubbles implode at the surface to be cleaned, dirt particles are removIt is important at this stage to draw attention to the very important and significant difference between 6dBµV and 6dB. 6dBµV is another way of expressing a voltage measurement 0f 2µV. 6dB however is merely expressing a ratio – stating that one number is 6dB higher than another indicates that the first number has double amplitude of the second. So if the decibel is dimensionless, i.e it does not have a specific reference attached to it, then that decibel reading is not telling anything. To say this is double is quite meaningless without a reference – it must be double compared with something else.
It is very important to keep in mind that decibels should not be multiplied or divided. They are dB and should only be added or subtracted. To say for example that 36dBµV is twice as big as 18dBµV is in correct. The difference between these two values is 18dBµV which correspond to a ratio of 7.9. So the voltage amplitude of a signal of 36dBµV is not 2 times higher than the voltage amplitude of a signal of 18dBµV, its in fact, 7.9 times higher!
Lets apply this to the bearing:
In January, bearing “A” was measured with an ultrasound detector and the value was 10dBµV
In April, that same bearing measured 62dBµV.
62dBµV - 10dBµV = 52dBµV (factor of 400)
Therefore, from January to April, the ultrasonic signal from bearing “A” increased by a factor of 400 – probably the has already failed.
It is important at this stage to draw attention to the very important and significant difference between 6dBµV and 6dB. 6dBµV is another way of expressing a voltage measurement 0f 2µV. 6dB however is merely expressing a ratio – stating that one number is 6dB higher than another indicates that the first number has double amplitude of the second. So if the decibel is dimensionless, i.e it does not have a specific reference attached to it, then that decibel reading is not telling anything. To say this is double is quite meaningless without a reference – it must be double compared with something else.
It is very important to keep in mind that decibels should not be multiplied or divided. They are logarithmic values and should only be added or subtracted. To say for example that 36dBµV is twice as big as 18dBµV is in correct.
Sound waves propagate mechanical wav
AWgage-150 measures sheet resistance in ohms per square or milliohms per square. If specific resistivity is known, the thickness of the deposited film layer can be computed from the sheet resistance. The choice of measurement data is easily get in the software. AWgage-150 can accommodate 150mm (6″) wafers as well as the standard 2″, 3″,4″, 5″ wafers without any hardware change.
Allwin21 AWgage-150 Features:
30 years proven Eddy Sheet Resistance Measurement technologies.
Non-contact Sheet Resistance Measurement technologies.
1mΩ/square to 19,990 Ω/square measurement range capability
Touch Screen Monitor and PC w/ Advanced Allwin21 control software.
Wafer carriage travel programmed with internal encoder step motor , without encoder disk.
Consistent wafer-to-wafer process cycle repeatability.
Small footprint and energy efficiency.
Made in U.S.A.
Specifications:
Test Sights: Single center-point, 5-point, or 9-point.5-9
Highly Conductive or Metal Sheet Resistance:
1 to 1,999 mΩ/square
1 to 1,999 Ω/square
Or
10 to 19,990 Ω/square
Highly Conductive or Metal Film ThicknessMinimum: 100 ÅngströmMaximum: Proportional to resistivity. Maximum for a resistivity of 2.7 mW-cm is 270 kÅ (27 mm
Techport is an end-to end latest solutions provider for remote monitoring applications.We offer the most comprehensive set of chemical and equipment solutions and services available, helping our customers manage and optimize their water resources and process challenges across industries and municipalities.
Have you ever wondered how search works while visiting an e-commerce site, internal website, or searching through other types of online resources? Look no further than this informative session on the ways that taxonomies help end-users navigate the internet! Hear from taxonomists and other information professionals who have first-hand experience creating and working with taxonomies that aid in navigation, search, and discovery across a range of disciplines.
Acorn Recovery: Restore IT infra within minutesIP ServerOne
Introducing Acorn Recovery as a Service, a simple, fast, and secure managed disaster recovery (DRaaS) by IP ServerOne. A DR solution that helps restore your IT infra within minutes.
Sharpen existing tools or get a new toolbox? Contemporary cluster initiatives...Orkestra
UIIN Conference, Madrid, 27-29 May 2024
James Wilson, Orkestra and Deusto Business School
Emily Wise, Lund University
Madeline Smith, The Glasgow School of Art
This presentation by Morris Kleiner (University of Minnesota), was made during the discussion “Competition and Regulation in Professions and Occupations” held at the Working Party No. 2 on Competition and Regulation on 10 June 2024. More papers and presentations on the topic can be found out at oe.cd/crps.
This presentation was uploaded with the author’s consent.
0x01 - Newton's Third Law: Static vs. Dynamic AbusersOWASP Beja
f you offer a service on the web, odds are that someone will abuse it. Be it an API, a SaaS, a PaaS, or even a static website, someone somewhere will try to figure out a way to use it to their own needs. In this talk we'll compare measures that are effective against static attackers and how to battle a dynamic attacker who adapts to your counter-measures.
About the Speaker
===============
Diogo Sousa, Engineering Manager @ Canonical
An opinionated individual with an interest in cryptography and its intersection with secure software development.
2. VISION TO BE A GLOBAL LEADER BY PROVIDING WORLD CLASS SERVICES ON:
WATER LEVEL & QUALTY MONITORING IN RIVERS, LAKES AND THE GROUND
EFFLUENT QUALITY MONITORING IN STP AND INDUSTRY TO HAVE A MOTIVATED TRAINED TEAM WHO WORKS IN HARMONY WITH SOCIETY AND ENVIRONMENT. TO ENSURE THAT ANY SYSTEM INSTALLED BY US ANYWHERE IN THE COUNTRY WILL IN CASE OF NON- FUNCTIONING BE MADE OPERATIVE WITHIN 48 HOURS.
3. ENCARDIO-RITE GROUP …
Encardio-rite Geosystems LLC Dubai
Encardio-rite Geosystems LLC Abu Dhabi
Encardio-rite Geosystems WLL Bahrain
Rite Geosystems WLL Qatar
Rite Geosystems Pte. Ltd. Singapore
Condor Gulf Technologies Company Ltd. Saudi Arabia
4. EXCELLENCE THROUGH INGENUITY…
GEOTECHNICAL INSTRUMENTATION
WATER LEVEL MONITORING
ONLINE
STRUCTURAL ENGINEERING
INSTRUMENTATION
CIVIL ENGINEERING
INSTRUMENTATION
MAJOR OPERATION AREAS…
MANUFACTURING & SUPPLY
INSTALLATION (INCLUDING DRILLING WORKS)
MONITORING & REPORTING
PRE/POST CONSTRUCTION
STRUCTURE CONDITION SURVEY
PROVIDING TURN KEY SOLUTIONS …
REMOTE ONLINE MONITORING
(WEB BASED)
OPTICAL SURVEYING
WATER QUALITY MONITORING
ONLINE
5. GLOBAL PRESENCE
PROVIDED TURNKEY INSTRUMENTATION AND MONITORING SERVICES IN THE INDIAN SUB CONTINENT & MIDDLE EAST
SUPPLIES TO AROUND 50 COUNTRIES ALL OVER THE WORLD
•EUROPE: GREECE, FRANCE, ITALY, SPAIN, TURKEY, UK, BULGARIA, UKRAINE, ROMANIA,
•AMERICAS: USA, CANADA, ARGENTINA, BRAZIL, CHILE, COLOMBIA, PERU, DOMINICAN REPUBLIC
•ASIA & OCEANIA: HONGKONG, INDONESIA, MALAYSIA, SINGAPORE, SOUTH KOREA, THAILAND, VIETNAM, TAIWAN, ISRAEL, NEPAL, BHUTAN, SRI LANKA, RUSSIA, AUSTRALIA, NEW ZEALAND,
•MIDDLE EAST & AFRICA: UAE, QATAR, OMAN, BAHRAIN, SAUDI ARABIA, KUWAIT, AFGHANISTAN, EGYPT, ALGERIA
6. MILESTONES
•INCORPORATED IN JUNE 1966
•ISO 9001:2008 CERTIFICATED FIRM BY DNV OF THE NETHERLANDS.
•D&B RATING OF 4A1.
•EXCELLENT IN-HOUSE R&D FACILITIES, RECOGNIZED BY GOVERNMENT OF INDIA SINCE 1977.
•TOTAL EMPLOYMENT AROUND 300 PERSONNEL WITH AROUND 100 ENGINEERS.
•ALMOST 65 % OF OUR TURNOVER IS IN FOREIGN EXCHANGE FROM AROUND 50 COUNTRIES ACROSS THE WORLD.
•WITH 48 YEARS OF EXPERIENCE, ENCARDIO-RITE GROUP OF COMPANIES ARE EXECUTING NUMBER OF PROJECTS ON TURNKEY BASIS, PROVIDING SUPPORT FROM DESIGNING TO SUPPLYING TO INSTALLATION TO DATA RETRIEVING TO MONITORING TO ONLINE PRESENTATION OF DATA.
7. MANUFACTURING & TEST FACILITIES
STATE OF ART FACILITIES INCLUDE
ELECTRON BEAM WELDING
TEMPERATURE AND ENVIRONMENTAL TEST CHAMBERS
PRECISION PRESSURE REGULATORS/TEMPERATURE CHAMBERS FOR HGH END ACCURACY SENSORS
ACCELERATED LIFE TESTING
ENVIRONMENTAL CONTROLLED BONDING LABORATORIES.
STATE OF THE ART IN-HOUSE CALIBRATION FACILITIES
8. WE CARE FOR SAFETY …
OVER 250 DAMS ALL OVER THE WORLD INCLUDING THE 260M HIGH TEHRI DAM 90 KM OF UNDERGROUND SEWER SYSTEM AT ABU DHABI & 16 KM AT BAHRAIN, 110M DEEP SHAFT FOR STP AT ABU DHABI DOHA, DUBAI, DELHI, CHENNAI, JAIPUR BANGALORE AND KOLKATA METROS BURJ KHALIFA - DUBAI MARINA BAY SANDS-SINGAPORE LODHA WORLD ONE- INDIA
SOME PRESTIGIOUS PROJECTS
9. ONLINE WATER LEVEL MONITORING WIDE EXPERIENCE IN DWLR
RECENT STATE PROJECTS AWARDED
50 SYSTEMS IN PUNJAB
25 SYSTEMS IN HYDERABAD
33 SYSTEMS IN PUDUCHERRY
216 SYSTEMS IN ASSAM
10. PRODUCTS
WATER MONITORING SYSTEMS
WATER LEVEL MONITORING SYSTEMS MOUNTABLE IN A 50 MM BOREHOLE : DATA RETRIEVAL BY TELEMETRY, MOBILE PHONE OR LAPTOP BATTERY LIFE FIVE YEARS ABSOLUTE PRESSURE SENSOR (COMPLETELY SEALED) WTH INTEGRAL AUTOMATIC BAROMETRIC PRESSURE CORRECTION DESICCANT CHAMBER WITH VENTED TUBE CABLE OPTION ALSO AVAILABLE
OPTION OF SYSTEM WITH ELECTRONICS IN SEPARATE BOX AVAILABLE
11. PRODUCTS
LOGGER ESCL-10VT WITH GSM/GPRS MODEM WITH/WITHOUT BAROMETRIC PRESSURE SENSOR
4 CORE CABLE
EPP-30/40 V ABSOLUTE/GAGE PRESSURE SENSOR
ENCARDIO-RITE WDMS SERVER
REMOTE USER PC
INTERNET
13. WATER QUALITY MONITORING ENCARDIO-RITE AUTOMATIC WATER QUALITY MONITORING SYSTEM OFFERS A RANGE OF SENSORS THAT MONITOR VARIOUS WATER QUALITY PARAMETERS. ANY COMBINATION OF SENSORS CAN BE USED DEPENDING ON APPLICATION, PRECISE MONITORING NEED, MEASUREMENT LOCATION OR TYPE OF INDUSTRY.
14. WATER QUALITY RANGE OF SENSORS OFFERED INCLUDES:
DISSOLVED OXYGEN
PH/ORP
CONDUCTIVITY
TURBIDITY
TEMPERATURE
COLOUR
SPECTROPHOTOMETER
OIL IN WATER ANALYZER
15. WATER QUALITY SPECTROPHOTOMETER CAN MONITOR FOLLOWING PARAMETERS:
SAC – SPECTRAL ABSORPTION COEFFICIENT
TSS – TOTAL SUSPENDED SOLIDS
COD – CHEMICAL OXYGEN DEMAND
TOC – TOTAL ORGANIC CARBON
DOC – DISSOLVED ORGANIC CARBON
BOD – BIOCHEMICAL OXYGEN DEMAND
NO2-N – NITRO DIOXIDE
NO3-N – NITRATES
NH2CL – AMMONIA
16. WATER QUALITY FEATURES EASY TO INSTALL USING SIMPLE PLUG AND PLAY MODULES. QUICK REMOTE ACCESS TO DATA WITH TELEMETRY OPTION. LARGE DATA STORAGE MEMORY ALLOWS DATA TO BE MONITORED FOR LONGER TIME BETWEEN RETRIEVALS. DIGITAL SIGNAL TRANSMISSION BUILT-IN LOG FOR ANALYSIS EASY TO HANDLE AND MAINTAIN.
18. DATA OUTSOURCING FOR ONLINE MONITORING OF WATER LEVEL AND QUALITY MONITORING, WE OFFER THE OPTION OF USING THE CLIENTS OR ENCARDIO-RITE SERVER. DATA OUTSOURCING OPTION IS ALSO AVAILABLE. HOWEVER, THE COST OF EQUIPMENT BEING VERY HIGH, CLIENT WILL HAVE TO BEAR A LARGE PART OF THE CAPITAL COST.
19. MANUFACTURING IN INDIA WE ARE A COMPLETELY INDIGENOUS MANUFACTURERS. WE UNDERSTAND INDIAN WORKING CONDITIONS SPARES ARE AVAILABLE EASILY. WE HAVE A LARGE INSTALLATION TEAM. BEING AN INDIAN ORGANISATION, WE ARE CONCERNED ABOUT THE WATER SCENARIO IN THE COUNTRY. IT PROMPTS US IN NATIONAL INTEREST TO ENSURE COST & RELIABILITY OF ALL INSTALLED SYSTEMS..
20. SUGGESTIONS PRESSURE SENSORS USED FOR WATER LEVEL MONITORING ALSO RECORD THE ATMOSPHERIC PRESSURE WHICH GOES ON CHANGING FROM TIME TO TIME. A CORRECTION HAS TO BE MADE FOR THIS. TWO METHODS ARE GENERALLY FOLLOWED FOR MAKING THE CORRECTION:
THE FIRST IS TO USE A GAUGE PRESSURE SENSOR WITH A VENTED TUBE CABLE OPEN TO THE ATMOSPHERE. THIS REQUIRES THE USE OF A DESICCANT CHAMBER TO PREVENT MOISTURE FROM ENTERING THE VENT TUBE.
THE SECOND IS TO USE AN ABSOLUTE PRESSURE SENSOR WITH AN INDIVIDUAL BAROMETRIC PRESSURE SENSOR TO MAKE THE CORRECTION.
21. SUGGESTIONS THE FIRST OPTION REQUIRES REGULAR CHANGE OF DESICCANT ESPECIALLY IN THE RAINY SEASON AND HENCE IS UNRELIABLE IN INDIA. RESULTS FROM SUCH SYSTEMS INSTALLED IN INDIA IN THOUSANDS HAVE BEEN FAR FROM SATISFACTORY. THE SECOND OPTION IS ALMOST MAINTENANCE FREE AS NO DESICCANTS HAVE TO BE CHANGED. MOREOVER PRESENT DAY ONLINE SYSTEMS WITH TELEMETRY USE VERY LITTLE POWER AND WITH THE USE OF LITHIUM BATTERIES HAVE A BATTERY LIFE OF MORE THAN FIVE YEARS. FOR INDIA THE SECOND OPTION IS THE ONLY OPTION FROM THE POINT OF VIEW OF RELIABILITY.
