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Quick Details

  • Place of Origin: Shanghai, China (Mainland)
  • Brand Name: CH-BA
  • Model Number: HT-5U-D
  • Usage: Outdoor
  • Theory: Temperature Sensor
  • Accuracy: 5%
  • Temperature range: 0-50 degree C

Packaging & Delivery

Packaging Details normal
Delivery Time Shipped in 5 days after payment


·          Humidity measurement for air ducts

·          Simple and secure installation

·          0-10V or 4-20mA measuring signals

·          Compact size and modern design


·          On return air ducts to measure return air humidity

·          On supply air ducts to measure supply air humidity

·          On fresh air ducts to measure outdoor air humidity.

Humidity Tansmitter

The transmitter measures the humidity by the honeywell humidity sensor HIH-3610. The transmitter analog output may be be 0-10V or 4-20mA. And the transmitter include a noise filter.the power suply is large range VDC18V----VDC30V.The humidity transmitter measurement range is 5%-95%.


Ordering number:RH-5I-D or RH-5I-D-T

-5 indicates the humidity transmitter accuracy is 5%; -3 indicates 3%, -2 indicates 2%.

-I  indicates the humiditt transmitter signal out is 4-20mA. If U indicates the signal is 0-10V.

-T indicates the humidity transmitter integration with temperature signal out.

For example:RH-5I-D-T

The duct humidity transmitter signal out is 4-20mA and the temperature signal out is 4-20mA.


Duct probes should be installed directly on the duct, in an area where the air stream is well mixed:

·          Locate a supply air sensor two or three meters down stream from the nearest fan and coil.

·          Mount the return air sensor close to the air inlet but downstream from a return fan if one is present.

·          To install the sensor, assemble base plate and probe, then drill a 12 mm hole and two 3 mm holes on a diameter of 25 mm in the duct.

·          Use two self-tapping sheet metal screws to tighten the mounting circuit in the cover.

·          Connect the wires according to the wiring diagram to the measuring circuit in the cover:

o         Only the humidity transmitter signal out  need three terminal connections,DC24V,Ground and humidity signal out.

o         If humidity and temperature transmitter signal out need for terminal connections,DC24V,Ground,humidity signal out and temperature signal out.

o         The connection signal cable should be shield wires.

·          Assemble the cover with the mounting plate.

·          Insert the assembled probe through the center opening of the mounting plate into the air stream.

·          Tighten the horizontal screw on the mounting plate to fix the probe to the duct.


Technical Specification

Power suply

Option voltage


Power Cunsumption

Max 2 VA

Signal out





Humudity range


Sensing element

Capacitive Element:







Connection Terminals

2.5 mm2


Climatic Conditions

To IEC 721-3-3
class 3 K5
<95% r.h.

Transport & Storage
Climatic Conditions
Mechanical Conditions

To IEC 721-3-2 and IEC 721-3-1
class 3 K3 and class 1 K3
<95% r.h.
class 2M2


          conform according to
EMC Standard 89/336/EEC
EMEI Standard 73/23/EEC

EN 61 000-6-1/ EN 61 000-6-3


Automatic electrical controls for household and similar use

Special requirement on temperature dependent controls

EN 60 730 1


EN 60 730 2 - 9

Pollution Class

Normal acc. To EN 60 730,RoHS compliant

Degree of Protection

IP56 to EN 60 529


Safety Class

III (IEC 60536)

Housing Materials

       Cover & Mounting Plate

Fire proof ABS plastic


Dimensions [mm]

Cover: 42 x 112 x 88 (H x W x D)

probe: ø 10 x 200 (Diameter x L)

Weight (including package)



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