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Shivganga Chamber, 686, Budhwar Peth, Near Prabhat Theater
Pune, Maharashtra-411002, India+(91)-20-24452139
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Process Indicator

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Our process indicator and controller is available in 4150XX series which has ability to display and control variety of physical parameters. These process indicator are powerful, highly flexible and can accept inputs from variety of sensors like all types of thermocouples, RTDs, pressure transducers, mV, mA, LVDTs, etc. The input can be either directly from the sensor or 4-20 mA transmitter, 3 ½ or 4 ½ digit, 0.5" Red 7 segment LED display and keyboard. It also has Thumbwheel switches and potentiometer for set points and programmable decimal points. It has the ability to program two relays to operate for the (parameter under measurement) > setpoint or < setpoint.

  • Compatible to variety of sensors.
  • Setpoints can be programmed by keyboard, thumbwheel switches or potentiometers.
  • In built compensation for RTD and thermocouple.
  • Span and zero adjustment and selection to display any engineering units.
  • Parallel BCD output or 4 to 20 mA output (Optional).

Measurement and control of:
  • Temperature
  • Pressure
  • Displacement
  • Current
  • Voltage
  • Liquid levels
  • Weight

A. Electrical:
  • Model 4150 A - Analog Comparators
  • Model 4150 D - Digital Comparators
  • Model 4150 M - Keyboard Programmable

1. Input Sensors:
  • Thermocouple: Type B, E, J, K, R, S, T with in built cold junction compensation and inbuilt linearisation in case of model 4150 M.
  • RTD: PT100 or PT 1000 with inbuilt linearisation in case of model 4150M.
  • Pressure: Any pressure transducer like piezo resistive, strain guage. The instrument generates 10 V DC excitation voltage for 350 W, bridge transducer.
  • 4 to 20 mA from a two wire transmitter.
  • 0 to 2V DC from any sensor.
  • +/- 0.05% of the range +/- 1 digit in case of 4 ½ digit display and
  • +/- 0.02 of the range +/- 1 digit in case of 3 ½ digit display
  • 3 ½ or 4 ½ Digit 7 segment LED display with external decimal point programming facility.
Set Points
  • Can be set by potentiometer adjustment in model 4150A.
  • Thumbwheel switches for setting in Model 4150D.
  • Keyboard programmable in Model 4150M.
Maximum Reading
  • 19999 for 4 ½ & 1999 for 3 ½ in both 4150A and 4150D models.
  • 4095 counts for 4150M model.
Conversion Speed
  • 3 readings per second for all models using integrating type ADC with response time less than a second.
  • Zero and Span adjustment possible by potentiometers.
  • Output changeover available on the back panel on screw terminals for ON/OFF control.
  • Contact Rating - 4A, 240V AC.
Working Voltage:
  • 240 V AC +/- 15%, 50Hz or
  • 110 V AC +/- 15%, 50Hz.
No. Of Setpoints
  • Two
  • Can be set by potentiometer and indicated while setting by the same display
  • By pressing a switch in Model 4150A.
  • Thumbwheel switches for setting in model 4150D.
  • Keyboard programmable in Model 4150M.
  • Setpoint can be made to operate for > or < in case of models 4150D and 4150M.
  • Working temperature range: 0 to 50ºC upto 90% R.H.
  • Storage temperature range: 0 to 70ºC upto 95% R.H.
  • Size: 96 x 96 x 200 mm DIN STD box with cutout 92 x 92 mm.
  • Weight: Approx. 1 kg. In view of continuous


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