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Temperature And Humidity Transmitter

Temperature And Humidity Transmitter
Temperature And Humidity Transmitter
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Product Code : TRH-307-PM
Brand Name : Ambetronics
Price And Quantity
  • Minimum Order Quantity
  • 1
  • Unit of Measure
  • Piece/Pieces
Product Description

Temperature And Humidity Transmitter



  • Highly Accurate, Fast & Reliable Sensing Technology
  • User Programmable With Password Protection
  • Easy Programming With Front Panel Push Buttons
  • No Calibration Required
  • 4 Digit Dual L.E.D Display : Upper Display For % RH
  • Lower Display For Temp
  • Excellent Long-Term Stability & Spike Protected
  • Two Relay O/Ps, One Each For Humidity & Temperature
  • Adjustable Time Delay For Operation Of The Relays
  • Two 4 - 20 mA O/Ps, One Each For Humidity & Temp.
  • Modbus RTU Protocol with Isolated RS-485 Communication 







0 ~ 100 % RH


0.1o C

0.1 % RH


+0.3% of full scale

+ 1.8 % of full scale

Sensor Type

1)Band gap temperature sensor for temperature.
2)Capacitive polymer sensing for Relative Humidity.

Sensor Cable length

Standard 1 meter, can extend up to 15 m on request.


Upper: 4 Digit, 0.56 (13mm), 7 Segment RED L.E.D. Display for Humidity.
Lower: 4 Digit, 0.56 (13mm), 7 Segment RED L.E.D. Display for Temperature.

L.E.D. Indication

TD1 & TD2 for Time Delay, RL1 & RL2 for relays, TX & RX for communication, PRG to show 'User' in programming mode, DEW to show Lower Display shows -Dew Point

Set Point

Two Independent set points, one each for RL1 & RL2 with Programmable Latch & Non latch facility


0~10, Independent setting for RL1 & RL2

Control Action

LO - HI, HI - LO, LO - Very  LO, HI - very HI , Programmable by User

Time Delay

0 ~ 9999 Sec., Independent setting for RL1 & RL 2 to operate after the -Process Value- crosses -Set Point Value

Relay Contact Type

1 NO / C/ NC Relay Contact Rated 230 VAC /5A for RL1 & RL2

Configuration of Relay

RL1 operates for Humidity, RL2 operates for Temperature

Fault Condition

In Under, 'Over' Or Open Condition i.e. -Set / Next, 'Up', 'Down' & 'Dew / Back' Key, Lower Display shows 'Dew Point'

Monitoring : Sensor Open/ Under/ Over

1)By Display : Sensor -Break / Open Shows 'Open' Indication

2)By Retransmission current O/Ps : Up Scale Current : 21mA, Down Scale current : 3mA, Programmable by User

Retransmission Output

1)2no., 4~20 mA OR 20 ~4 mA Programmable with max load 750 ohms for Temp & Humidity
2) Range: - 999 ~ 9999 , Low Range & High Range, Anywhere in the range (High Range > Low Range)


Modbus RTU Protocol with Isolated RS - 485 Communication

Supply Voltage

230 VAC +10% OR 110 VAC+10% OR 24VDC

Operating Temperature


Relative Humidity

Below 95% non condensing

Sensor Housing

P.V.C. /SS316, Please Specify while ordering

Enclosure Details




Protection Class


IP- 65

IP-65, CMRI Approved for IIA & IIB GAS Group

Cabinet Material

ABS Plastic, Black / White Colour

Thermoplastic Cable Gland (IP- 68)

Double compression cable gland (EX- Proof), ET-Type


96 (H) x 96 (W) x 120 (D) in mm

215 (H) x240 (W) x 120 (D) in mm

300 (H) x 250 (W) x 110 (D) in mm

Cut out

92 (H) x 92 (W) in mm


Panel Mounting

Wall Mounting/ Stand Mounting

Wall Mounting/ Stand Mounting


Approx. 1.0 Kg

Approx. 2.5 Kg

Approx. 4.0 Kg

Trade Information
  • Payment Terms
  • Telegraphic Transfer (T/T), Cheque, Cash in Advance (CID)
  • Delivery Time
  • 3 to 4 weeks Week
  • Main Export Market(s)
  • Africa, Middle East, Western Europe, Eastern Europe, Australia, Asia
  • Main Domestic Market
  • All India


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