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Dew point Transmitter

Dew point Transmitter
Dew point Transmitter
Product Code : TRH-555-WP-FLP
Product Description

Quality being our topmost priority, we are considered as the reputed manufacturer and exporter of Dew Point Transmitter. All these transmitters calculate the dew level after taking into account the temperature and humidity level in the room. Installed in the swimming pools, clean rooms and for indoor air quality check, the offered Dew Point Transmitter is specially designed in different models and specifications.


  • Incorporated with digital technology sensor
  • No requirement of field calibration
  • Wide range of operating temperature


  • Highly accurate Digital technology sensor gives fast and reliable output.
  • Fully calibrated Digital sensor, no need of field calibration.
  • Long term stable output for both Temperature and RH.
  • Calculated Dew point measurement based on measurement of Temperature and Humidity.
  • Wide range of operating Temperature and full scale.
  • User selectable Temperature, RH & Dew point outputs.
  • Digital Alphanumeric display with Auto backlit.
  • Standard 4-20mA signal outputs with configurable range.
  • Easy handling & programming with 3 keys.
  • Can be programmed using Remote Control from 10 meters line of site distance.
  • Non-intrusive programming for flameproof models using Magnetic Pen.
  • Password protected programming menu.
  • Optional Alarm relay contacts with two configurable Alarm levels.
  • Optional RS-485 communication port with MODBUS RTU Protocol.

Applications :

  • HVAC / Buildings Controls.
  • Energy Management system (EMS)
  • Enthalpy control.
  • Indoor air quality (IAQ)
  • Clean rooms.
  • Museums / Archives.
  • Hospitals / Labs
  • Refrigeration control.
  • Pharmaceutical.
  • Swimming pool



Output Signal

Detection Method

Advanced CMOS ens Technology.


Two 4-20mA Current Outputs with configurable range selection.


8 x 2 Alphanumeric LCD with Auto Backlit.

8 LEDs to indicate status of instrument.


Two SPDT Relays of rating -120VAC/2A, 240VDC/2A

Control Action

i) Two independent Alarm set points with Latch & Non-latch facility.
ii) User selectable Hysteresis and Logic option.


RS-485 Communication port with MODBUS RTU protocol.


By 3 Keys on front panel
By using Magnetic pen (Only for Flameproof model) 
By using Remote Control (Optional)

Error Monitoring


i) During Sensor break / open, the Display shows 'SENSOR OPEN' &

4-20mA output goes down to 3.7mA.





oC for Temperature, +1.8% for Relative Humidity

Storage Temperature

10 to +50oC

Response Time

Less than 30 Seconds.

Operating Temperature

-40 to +120oC

Start-up Time

Less than 30 Seconds.


100% Non-Condensing.



Power Supply

24 VDC (18 to 36 VDC)

certified 24 VDC Power supply.

RS-232 to RS-485 convertor

Power Consumption

Canopy Mounting stand.

Hooter Cum Flasher.


3 Wires (1.5 mm2) Flexible or Armored Shielded Cable.

SCADA Software.

Remote Control.

RS-485 to USB convertor

Weatherproof Housing

Flameproof Housing

Protection Class


Protection Class

IP-65 for Gas Gr. IIA, IIB & IIC CMRI approved enclosure, CCOE(Optional).

Cabinet Material

Polycarbonate, grey colour

Cabinet Material

Cast Aluminium alloy, LM-6

Cable Entry

Thermoplastic cable gland (IP 68)

Cable Entry

Double compression cable gland (Ex-Proof) ET-type


171 mm (H) x 83 mm (W) x 57mm (D)


180 mm (H) x 242 mm (W) x 128mm (D)


Wall Mounting / Stand Mounting


Wall Mounting / Stand Mounting


Approx 500 Grams.


Approx 2.0 Kg.

Contact Us

17-B, Tarun Industrial Estate, Mogra Pada, New Nagardas Road, Andheri (East), Mumbai, Maharashtra, 400069, India
Phone :+917259672294