Duct Humidity Transmitter with a noise filter

Humidity measurement for air ducts Simple and secure installation Humidity Range: 0--100% weight:0.35kg

Features    

·          Humidity measurement for air ducts

·          Simple and secure installation

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

·          Compact size and modern design

Applications

·          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 ari 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

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.

Installation

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	VDC18V---VDC30V
	Power Cunsumption	Max 2 VA
Signal out	signal	4-20mA
	accuracy	5%
	Humudity range	0%-100%
Sensing element	Capacitive Element: Range Accuracy	5%---95% ±0.3k
Connection	Connection Terminals	2.5 mm2
Environment	OperationClimatic ConditionsTemperatureHumidity	To IEC 721-3-3class 3 K5-4070°C<95% r.h.
	Transport & StorageClimatic ConditionsTemperatureHumidityMechanical Conditions	To IEC 721-3-2 and IEC 721-3-1class 3 K3 and class 1 K3-4080°C<95% r.h.class 2M2
Standards	conform according to EMC Standard 89/336/EECEMEI 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
General	Dimensions [mm]	Cover: 42 x 112 x 88 (H x W x D) probe: ø 10 x 200 (Diameter x L)
	Weight (including package)	135g

Duct Humidity Transmitter with a noise filter