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Maitry Instruments & Control, Surat, Process Control Instruments

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Suppliers of Inductive Proximity Switches, Capacitive Proximity Switches, Optical Proximity Switches, Magnetic Proximity Switches, Electronic Speed Switches, Pull Cord Switches, Belt Sway Switches, Heavy Duty Limit Switches, a comprehensive range of Process Control Instruments & Automation Components. These products are widely used in automobile, electronics, pharmaceutical and food industries.

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Maitry Instruments & Control, Surat, Process Control Instruments

  1. 1. Maitry Instruments & Control Shop No. 42, 1st Floor, Akshar Shopping Center, Road No. 1, Udyognagar, Udhana, Surat - 394 210, Gujarat, India www.maitryinstruments.com Mobile: +(91)-9825570174, Mail id:- mailtryst@yahoo.in Belt Monitoring Switches For Protection of ConveyorsElectronic Speed Switches :Protection against Zero / Under / Over speed conditionFeatures= Under / Over / Zero speed protection.= Cast Al / Poly carbonate / Polyester enclosure.= Multi range model for reducing inventory. Range 5 to 5000 RPM selectable.= Built in initial start up Nuisance time delay.= Contact 1 NO+1NC, 2 NO+2NC.= 4 to 20 mA retransmission output.= IP65 grade protection.= Digital display models.= Non contact type sensor probe. Size : M18/M30/M50/M80= Intrinsically safe model available.= Sensor probe with extension stand.Electronic Belt Loading MonitorModel : BLM5511Application= To monitor load as well as well as speed of the conveyor. SELECTION TABLE Please follow the nomenclature as below. ESM 4411 - TD - CA - 55 - 11 - 30 BASIC TYPE PROBE SIZE ESM4410 - Speed Indicator M18, M25, M30, M50 ESM4411 - Under speed monitor OUTPUT CONTACT COMBINATION ESM4412 - Over speed monitor 11-1 NO + 1 NC ESM4413 - Under + Over speed monitor 22-2 NO + 2 NC ESM4414 - Under speed with extension stand PROTECTION GRADE OPERATIONAL FEATURES IP 30, IP55, IP 65 TD - Built in initial bypass Delay ENCLOSURE TYPE NTD - Nuisance Delay MS - Sheet Metal CA - Cast Aluminum NITD - Combined Nuisance + Initial Delay PL - Plastic / Poly carbonate DD - Digital Display SS - Stainless Steel for Chemical S - Selector switch for multi range.Heavy duty Limit SwitchesModel - HLS 802Features= Heavy duty enclosure for dusty environment.= Cast Al / cast iron.= Robust spring to absorb the belt impact.= Grade of protection IP65.= Heavy duty contacts 16 Amp @ 240VAC= Contact combination 1No + 1NC / 2NO + 2NC / 4 NC= Retaining type Screws.
  2. 2. www.maitryinstruments.com Belt Monitoring Switches For Protection of Conveyors Pull Cord Switch Features = Heavy duty enclosure for dusty environment. = Cast Al / cast iron / Poly carbonate enclosure. = Retaining type screws. = Heavy duty contacts 16 Amp rating 240VAC, = Contact combination 1NO+1NC / 2NO+2NC. = Manual reset. = Models available with junction box / with indicating lamp / with mechanical flag. Ordering Code S B S 3 0 - 1 - C A - T B - F - L - flag Basic Enclosure Indicator Model CA - Cast Al. Indicating PL - Poly Carbonate 1 + 1 NO + 1 NC Lamp CI - Cast Iron 2 + 2 NO + 2 NC With Junction BoxBelt Sway SwitchFeatures= Heavy duty enclosure for dusty environment.= Cast Al / cast iron / Poly carbonate enclosure.= Ball / bush bearing options for roller & cam shaft.= Grade of protection IP65.= Heavy duty contact 16 Amp @240VAC= Contact combination 1 NO+1NC / 2NO+2NC.= Auto reset type.= Retaining type screws.= Robust spring to absorb the belt impact. Ordering Code S B S 4 0 - 1 - C A - T B - L - D Basic Model With Indicating 1- 1 No. + 1 NC Junction Lamp 2- 2 No. + 2 NC Box Handle roller Enclosure & shaft with CA - Cast Aluminum ball bearings PL - Poly Carbonate CI - Cast Iron
  3. 3. www.maitryinstruments.com Signal Isolaters & ConvertersSpecificationsl Din Rail mounted signal converter / isolator is available in different input.l 0-5mVDC / 0-20mVDC / 0-50mVDC / 0-100mVDC / 0 10mADC / 0-20mADC / 4-20mADC / 0-5 VDC / 1-5 VDC / 0-10VDC / 0-5Amp / 0-1 Amp or customer specified, up to 3 outputs are available with all port isolation i. e. supply to input / supply to output / input to output and output to output channel isolation.l Unit is available in 24VDC, 110VAC and 230VAC supply. Level SensorsRf Admittance Type Ultrasonic Sensorsl Three Element Coat Guard Technology l Size : M18/30 Ignores material build - up on Probe l Supply : 24VDCl Applications : Sand levels, Cement, Lime l Output : 0-10 VDC / 4-20 mA etc. l Sensing Dia : 600mm /1500mml Supply : 24 VDC, 230 VACl Output : 2No+2NC Photo Electric Level Sensor l Infrared Sensor for liquid Level detection l Ex-proof l Supply : 24 VDC Vibrating Fork Type l Output : PNP/NPN Type l Suitable for highly dusty environment l Dimension : 3/8 x74 mm l Mounting Material : PolysulphoneRotating Paddle Typel Motor torque adjustable Magnetic Level Switchl Special Clutch mechanism to protect Motor l 2,3,4 point Switching Availablel Sealed bearing for Rotating shaft. Rotary EncodersEncoder is light sensor that detects and converts mechanical means the number of pulse which is output from 1 revolutiontransfer or displacement into electric signal. It detects the of the rotating shaft of rotary encoder. In case of incrementalposition, speed, angle by means of converting analog signal encoder, it can be indicated in the number of rotating slits, ingenerated from a revolution of the shaft into digital signal by case of Absolute encoder, it can be indicated in number ofthe internal fixed circuit. divisions or bit High resolution from 100 to 6000 P/ROutput Circuit Types : Power Voltage : 5 VDC/24 VDC1) Open Collector 2) Push Pull Output 3) Line Driver Outer Diameter : 30,40,48,58 mmOutput Channels Shaft Diameter : 6mm, 8mm1. A,B PhaseThe output signal of A, B phase are output with 90 of phasedifference. It is the signal to discriminate the rotationdirection.2. Z PhaseOne Z phase is output per one rotation, which is called originsignal.Resolution (Pulses per Revolutions)
  4. 4. www.maitryinstruments.com Inductive Proximity Switches Intelligent Sensors in Automated Processes Maitry Instruments & Control offers you a Miniature Sensors Our miniature sensors with short circuit protection wide range of high quality Proximity Switches. M 8 x 30 mm & M 12 x 30 mm with LED Indication these are used in all areas of control & Types of Inductive Proximity Switches AC Proximity Switches - Type PS 12 automation such as Machine Tools, Packaging, These are available in 2 wire and 3 wire as shown. These Injection Moulding, Automobile Industries, switches are to be connected in series with the load. Process Industries, Textile Industries and Operating Voltage : 110VAC/240VAC/90-240VAC other Automated Systems. Logic : NO/ NC/CO Load : up to 500 MAOperating PrincipleThe LC oscillator circuit generates the electromagnetic fieldover the active face, energy is drawn from oscillator. resulting 2 Wire 3 Wire p p REDdamping of the oscillator. This Change is detected by the RED GREENelectronic circuit to give output signal. IPS BLACK IPS BLACKAdvantages LOAD LOAD LOADl Non Contact Operation l Corrosion Resistance N Nl High Operating Frequency l IP 67 Grade of Protectionl Bounce Free Operation l Repeat accuracy ± 0.02 mml Vibration Resistance l Long LifeEnclosure DC Proximity Switches - Type PS 13Proximity Switches are available in Tubular shape made of These are available in 3 wires as shown. Special models of 2BRASS , S.S., M.S. Other odd Shape Switches or as per wires and 4 wires are available on requestcustomer requirement can be made available on request. Operating Voltage : 5V to 30V DC (up to 220V DC on request)Operating Temperature Logic : NPN / PNPOperating Temperature of Proximity Switches is O0c to 55 c. Load : up to 400 MATemperature up to 1000c can be manufactured on request.ProtectionAC Switches are protected against transients and surges. DC 3 Wire + 3 Wire + NPN PNPSwitches are protected against Short Circuit and Reverse RED LOAD REDPolarity. IPS GREEN IPS GREEN BLACK BLACKMounting LOADIn case of Flush Mounting the sensing distance is limited to _ _0.8 times of the sensing distance for Non Flush Type. 3xd d d d 2xsn d Dimensional & Technical Specification Size Sensing distance Load Current Steel Steel mm in mm in ma Flush Non Flush For AC For DC Ø 6.5 1 - - 250Tubular Switches : Enclosure Type M8 1.5 2 - 250 Size 12 18 24 30 36 50 M12 2.5 3.5 250 250 DC 50 70 65 70 70 65 M18 5 7 400 250 AC 80 70 70 70 70 65 M30 10 12 400 250 M 36 15 18 400 250 M50 15 20 400 400 LED M80 30 35 - 400 17X17X36 7 - 250 20X20X38 7 - 250 L 26X12X40 3.5 - 250 A/F 40X40X112.5 13 20 400 400
  5. 5. www.maitryinstruments.com Inductive Proximity Switches Intelligent Sensors in Automated Processes M5 x 30 M8 x 45 M18 x 80 M30 x 80 M12 x 50 M50 x 80 20 x 20 x 38 17 x 17 x 36 40 x 40 x 112-5 20 x 20 x 50 26 x 12 x 40 20 x 16 x 12 8 x 8 x 40 Gap Size : 10 mm 40 x 40 x 112.5 50 x 25 x 10 50 x 22 x 42 T Shape : 10 mm 25 x 25 x 65 Capacitive Proximity Switchesl Adjustment Sensitivityl Size : M18, M30l Supply : 10-30 VDC/ 240 VACl Logic : PNP / NPN / NO / NCl Enclosure : Brass / Plastic
  6. 6. www.maitryinstruments.com Optical Proximity Switches Diffuse Scan Sensor Maitry Instruments & Control offers Optical Proximity Switches with modulated infrared beam consisting of a transmitter and a receiver. The state-of-the-art 17 x 50 x 55 modulation and detection circuit ensures M18 x 55 M12 x 60 reliable operation of sensors in hostile environment and are unaffected by Through Scan Sensor temperature variation and stray light.ApplicationsThese are widely used for sensing metals and non-metals likewood, glass, paper and water, etc.These switches are used for automation in various industrieslike pharmaceutical machines, packaging machines, foodprocessing, textile machines, conveyor systems, Automobile M18 x 75engineering industries, Chemical Plants, Cement Plants, 17 x 50 x 55Safety and Security appliance.Specifications Retro - Reflective Sensorl Supply : 10-30 Volts DCl Output : NPN or PNP typel O/P Current : 200 mA (Max.)l No Load Current : 5 - 10 mA approx.l Drop across switch : Less than 1 Voltl Switching frequency : 100 Hz., 2KHZl Protection : Reverse Polarity and 17 x 50 x55 M18 x 55 Short Circuit Protection Fork/Slot Sensor 60 x 20 x15 Fork Gap : 50, 5, 20, & 3 mm. 70 x 50 x15 70 x 50 x15 90 x 70 x 15 Magnetic Proximity SwitchesAny Shape/ Any Size2 Wire, 3 Wire D. C. version Available
  7. 7. www.maitryinstruments.com Switching Mode Power Supplies Maitry Instruments & Control Offers you a wide Salient Features range of high quality Switching Mode Power l Low cost, high reliability. Supplies. These are used in all areas of control and l High efficiency and high working temperature automation such as Machine tools, Packaging, l Compact size, lightweight Injection Moulding, Automobile Industries, l 100% full load burn - in test. Process Industries and other Automated Systems. l Short circuit / overload protected / over voltage protected. l Built-in EMI filter, low ripple noise. Specification Input voltage : 90 to 270 AVC Input frequency : 47 to 63 Hz Inrush current : Cold start Limited by NTC thermistor Overload protection : Constant voltage, constant current 105% to 120% output foldback limiting. Holdup time : Greater than 20 m sec. High voltage test : I / P to O / P 3 KV 1 min., 162 x 96 x 105 130 x 70 x 55 I /P to O/P 1.5 KV 1 min. Safety standards : As per UL 1012 requirement Model Available EMC & EMI : Tested for FCC class A 5VDC upto 20 Amp Cooling : Natural Cooling 12VDC upto 20 Amp Noise suppression : By means of heavy duty 24VDC upto 20 Amp EMI and RFI filter 48VDC upto 10 Amp can with stand 2 kV noise 60VDC - 5 Amp between Line & N, L & Combination Models Earth, N &E. are also available. Operating Temperature : 0 to 55 0C I/P voltage surge protection : By means of proper rating MOV 140 x 80 x 65 Electromagnetic Vibrator ControllersFor Bowl / Liner feeders New Advance Version (CVCF)Constant voltage, constant frequency controllers for smoothvibration and constant feed rate irrespective of change insupply voltage and frequency for Genset application.SpecificationSupply : 230 / 41 5 VAC 2 phase 50 HzCurrent : 3/6/10/15/30 AmpVoltage setting : Via potentiometer / 4 to 20 mA control signal 144 x 96 x 115Retransmission O/p : 4 to 20 ma for PLC 144 x 72 x 115 96 x 96 x160Protections : Overload and fast acting fuses. 144 x 144 x 80 160 x 160 x 240
  8. 8. www.maitryinstruments. com Digital TimerOn Delay / Int / Cyclic ModeSpecificationsDisplay : Single / Double Display typeSetting : By front key pad / Thumbwheel typeReset : On front / power ON resetOutput : 2 C/ O relay contact 5 Amp / 230VACSupply : 230V / 110VAC +/- 10 %, 50 HzSize : 48 X 48, 72 X 72, 96 X 96, 48 X 96Range : 0-9999 / Hr. sec / minOptional : Auto reset Single set / dual set point Memory facility Weekly TimerCommon Features :l RTC Format Display 00.00 to 23.59l Bright red 0.56" seven segment display for time indicationl User-friendly programming using tactile switchesl Program enable providedl Memory back-up in case of power failure for one weekl Operating Voltage range : 85V to 265V AC.l 1 C/O relay rated for 10A @ 250V AC / 28V DC (Resistive)l Dimension : 72 x 72 x 85 mml Program Steps : 4 / 8 /30 Digital Counters Event / Preset / Length CountersSpecificationsSetting : Keypad / ThumbwheelRange : 999999 countsDisplay : Single /DoubleInput : PNP / NPN Proximity, Limit switch, Encoder or 230VAC pulseOutput : 1 C/ O, Relay, 5 Amp / 230VACReset : Manual / Auto reset selectable by key pad (Reset time selectable by keys in auto mode)Supply : 230C / 110VAC +/- 10 %, 50 HzSize : 48 X 48, 72 X 72, 96 X 96Optional : Reset on back terminal Dual set point Programmable scale factor Up-down counter ( for encoder input)
  9. 9. www.maitryinstruments. com Digital Rpm Indicator / ControllersSpecificationsl Display : Single / Doublel 4 digit non-contact (RPM indicator)l Bright red.0.5 seven segment displayl Range: 1 RPM to 9999 RPMl Accuracy : +/- 1% of FSl User programmable speed limit trip point with keypadl 2 C/O relay output rated for 5A @ 240VAC /28VDC (Resistive)l Accepts NPN /PNP proximity switch inputsl Input : 1 pulse per revolutions / Scale Factorl Supply 110V / 230VAC Dimensions: 48 X 96, 72 X 72, 96 X 96 Alarm AnnunciatorSpecificationsMicroprocessor based 8 / 16 /32 channel alarm annunciatoraccept input from potential free contacts, power supplyavailable 230VAC or 24VDC or customer specify flashing rate55/60 flash per minute, front key switch available forACCEPT and TEST as well same function is available on backpanel for remote operation, additional power contact throughrelay is available for alarm signal to connect warning light /hooter etc. Micro-processor Based ScannerSpecificationsl Micro processor Based Scanner is available in 8 /16 channel, sensor input available universal T/C type or RTD or analog signal (0-5V / 1-5V / 0-10mA / 4-20mA or resistance potentiometer) or mixed input sensors, individual channel input and high / low alarm is programmable from front key.l Available in 90-270 VAC or 24 VDC supply.l Isolated communication port for RS232 or RS 485l Inbuilt 16 Relay output ( High or Low )l Individual alarm indication LED ( 16 Channel )l User programmablel Alarm logicl Relay groupingl Sensor break logicl Channel name 8 Characterl Alphanumeric LCD displayl Units display
  10. 10. www.maitryinstruments. com AutoTuned PID ControllersBasic Features Multi-input and multi - range performance= Includes a new processing system, Expert PID, remarkably improved PID control efficiency; overshoot and undershoot are controlled effectively.= The keylock function can avoid erroneous operation resulting from set values or parameter settings.= High/Low alarm available as basic feature.Features := PID, ON/OFF, Manual & PID modes. =Universal input.= Relay/SSR/Analog output.(Current & Voltage)= Size : 48x48, 48x96, 72x72, 96x96 =Heating /Cooling output available.= Auto tuning facility. =Retransmission output. Temperature SensorsTypes of Thermocouples : K (Chromel - Alumel ) ,J (Iron-Constantan). T (Copper-Conslantan), E (Chromel-Constantan), R (Pt-Pt-13%-Rh) ; S (Pt-p 10%-Rh), B (Pt-13%-Rh-Pt-6%-Rh) in Simplex. Duplex and Triplex.Types of Resistance Temperature Detectors : Pt-50, Pt-100,Pt 500, Pt-1000, NI-100, Cu-2000 in Simplex, Duplex andTriplex.Types of Insulations : Ceramic Insulation and MineralInsulation.Types of Junctions : Grounded, Ungrounded (Isolated), Selection of Thermocouple Type as per temperatureTypes of Sheaths : Mild Steel, SS-304, SS-316, SS-310. SS- Temp. range Resolution446. Inconel -600, Inconel - 800. Titanium. Cast- Iron, in C Type of Thermocuple in CNickel, Ceramic (610), Recrystlised Alumina (KER-710), etc. - 40 to 760 J (Iron-Constantan) 1Shapes & Sizes : Asper your requirement or application. - 40 to 1260 K (Chromel-Alumel) 1Mounting Accessories : Thermocouple and RTDconnectors, BSP / NPT / UNF/ Metric threaded Male - 184 to 371 T (Copper-Constantan) 1Female adjustable ferrule fitting in Mild Steel/ Stainless - 50 to 1741 R ( Pt-Pt-13%-Rh) 1Steel-304/316/Brass etc. All type of flanges available as per - 50 to 1767 S ( Pt-Pt-13%-Rh) 1standard table and as per your requirement or application - 200 to 550 ( 100 othms RTD Pt-100 Bullb) 1considering pressure in Mild Steel, Carbon Steel, Stainless Digital Temperature Indicator / Controllers Specifications Input sensor a. Thermocouple : Iron-constantan (Fe / con)-up to 4000C Chrome l- Alumel (Cr /Al)-up to 12000C Platinum-Platinum-Rhodium (Pt/Pt-Rh-13%) up to 16000C b. RTD : Resistance Temperature Detector ( Pt-100) low temperature & up to 4000C Accuracy : +/-0.5% of FSD Compensation : Cold junction compensation automatic for all thermocouple models Relay Output : One change over relay contact 5 Amp / 230VAC rating Control Action : ON-OFF or time proportional Control version : Single set point or Dual set point Power Supply : 230VAC+/-105.50Hz Max. Ambient temp.: 550C Setting : Keypad / Knob / Push to set Size : 48 X 48, 72 X 72, 96 X 96,48X96
  11. 11. www.maitryinstruments. com Solid State Relays & Relay Modules Maitry Instruments & Control offers wide range of solid state relays. Solid state relay is a static electronic switch Input (Control) unlike in an electromechanical relay where switching Specifications Min. Max. Units takes place between two moving contacts, Switching Control Voltage Range 3 32 VDC in SSR takes place across the junction of semiconductor 75 240 VAC device. Devices are Triac or Thyristor for AC switching & 0 0 Transistor for DC switching. In most SSRs galvanic Input Current -40 C < ta < 80 C 20 mA separation is achieved by Optocouplers equipped with Turn off Voltage - 30 c < ta < 80 C 1 VDC integrated trigger circuit. (optotriac) provide the 4 VAC switching function required for the corresponding load Turn on Voltage - 40 C < ta < 80 C 75 260 VAC type. Isolation ( Input to Output, 10 OHMSMaitry Instruments & Control Manufacture SSRs Input to case Output to case )from current rating 2A to 150 Amp. Output (load)Output Voltage : 240 v or 600 VAC.DC output relays with rating 110 VDC 10 Amp. to 100Amp. Specifications Min. Max. Units Output Current rating with heat sink 0.05 10 25 AMPS 15,40,60 RMS Load Voltage rating 25 480 VACRelay ModulesRelay modules are available like 2/4/8/16 channel with ( RMS )base with fuse protection, Relay O/p = 1C/o / 2C/o Frequency rang 47 70 Hzcontacts. Surge Current rating ( 20ms ) at 40 amp type 425 AMP Over voltage rating ( transisent peak ) 1200 V Peak Thyristrised Power ControllerFor the electrical heating system to control the temperature at Energy conservation + Better resultsthe set point by switching contractors has manydisadvantages, such as wear and tear, limited life of General Specificationcontractor, noisy operation. Besides these it has limited Input : Single/Three phase AC 50 Hz.accuracy due to limitation of speed of operation, hence loss Output : 0-95% of rated input. (lockableof power. All above mentioned disadvantages are eliminated 50-100%)by SCS Thyristor Controller. Control Signal : Local-Multiturn potentio meter.Applications Ambient Temperature : 450 C Max.l All types of Electrical Heating Systems. Standard Capacitiesl Infrared Ovens. Single Phase up to 10 kw Three Phase up to 200 kwl Vacuum Brazing Furnace.l Continuos Annealing / Bell Furnace.Salient Featuresl From medium to higher capacity or single / three phase loadl Sturdy and Rugged Design.l Facility of Local and Remote Operation.l Good accuracy over full range.l Better external noise immunity.Standard ProtectionsBuilt-Inl Adjustable over current limit.l dv / dt protection by RC snubber.

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