RHT Humidity Transmitters For Building Automation Systems

Product Details:

Resolution 0.1% RH
Current Range 4-20 mA
Application Media Air
Measurement Range 0 to 100% RH
Equipment Type Humidity Transmitter
Connectivity Type Analog Output (4-20 mA / 0-10 V)
Sensor Type Capacitive Humidity Sensor
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RHT Humidity Transmitters For Building Automation Systems Product Specifications

Power Consumption 1.5 VA
Diameter Transmitter housing diameter: 75 mm
Temperature Range -20C to +80C
Display Type LCD Digital Display
Protection IP65
Humidity % 0 to 100%
Resolution 0.1% RH
Power Supply 24 V AC/DC
Material ABS Plastic
Current Range 4-20 mA
Accuracy 2% RH (10 to 90% RH)
Application Media Air
Sensor Type Capacitive Humidity Sensor
Connectivity Type Analog Output (4-20 mA / 0-10 V)
Equipment Type Humidity Transmitter
Measurement Range 0 to 100% RH
Range 0 to 100% RH

RHT Humidity Transmitters For Building Automation Systems Trade Information

Payment Terms Cheque
Sample Available Yes

Product Description

RHT-MOD relative humidity transmitters are engineered for building automation systems in the HVAC/R industry. The RHT measures relative humidity (rH), and temperature (T). RHT devices are available with large touchscreen display making conguration of the device quick and easy. Configuration is also possible via Modbus network.

RHT-MOD devices include:
Separate eld congurable Modbus output for each measurement parameter (rH and T)
One analog output for selected measurement: voltage (0/210 V) and current (420 mA)
Optional relay output

Communication:	RS-485 Modbus (RTU)
Accurary:	Temperature: <0.5 C Relative humidity: 23 % rH at 050 C and 1090 % rH Total error band includes accuracy, hysteresis and temperature effect over 550 C and 1090 % rH
Measuring units:	C, % rH
Measurement elements:	Pt1000 temperature sensor, thermoset polymer capacitive sensing element for humidity
Supply voltage:	24 VDC/VAC 10 %
Current consumption:	max 90 mA (at 24 V) + 10 mA for each voltage output or 20 mA for each current output
Output signal 1:	0/210 V (linear to rH), L min 1 k or 420 mA (linear to rH), L max 500
Output signal 2:	0/210 V (linear to Temp), L min 1 k or 420 mA (linear to Temp), L max 500
Optional relay output:	Potential free SPDT 250 VAC, 6 A / 30 VDC, 6 A with adjustable switching point and hysteresis
Operating temperature:	0+50 C
Protection standard:	IP20

Advanced Humidity Sensing for Smart Buildings

The RHT Humidity Transmitter combines capacitive sensor technology with a durable IP65-rated ABS enclosure, making it ideal for building automation applications. With its broad measurement range and high accuracy, it ensures optimal indoor climate control in commercial or industrial settings.

Easy Installation and Reliable Operation

Designed for wall or duct mounting, installation is straightforward with screw terminals for electrical connection. The transmitter offers selectable output signals and supports easy integration into existing control or monitoring systems, minimizing setup time and ensuring long-term stability of less than 1% RH per year.

Efficient and Accurate Environmental Monitoring

With a fast response time of under 10 seconds and factory calibration, the RHT Humidity Transmitter provides dependable real-time measurements. Its LCD digital display offers clear readings, while the transmitter operates efficiently within a wide ambient temperature range, delivering robust performance for extended periods.

FAQ's of RHT Humidity Transmitters For Building Automation Systems:

Q: How do I install the RHT Humidity Transmitter in my building automation system?

A: The transmitter supports wall or duct mounting and includes screw terminals for straightforward electrical connections. Installation guidance is provided in the user manual, ensuring quick setup into any air monitoring application.

Q: What benefits does the selectable output signal offer?

A: Users can choose between 4-20 mA or 0-10 V analog output, facilitating seamless integration with various building automation controllers or monitoring platforms for flexible and precise humidity management.

Q: When can I expect accurate humidity readings after installation?

A: Thanks to its rapid response time of less than 10 seconds at 25C and factory calibration, the transmitter begins delivering reliable measurements almost immediately after power-up.

Q: Where is the ideal location to mount the RHT Humidity Transmitter?

A: You can mount the transmitter on a wall or inside a duct to measure air humidity. Placement should be in areas free from direct water exposure, but it will work effectively across a broad temperature range (-20C to +80C).

Q: What is the process for calibrating the transmitter?

A: Calibration is conducted at the factory, ensuring high accuracy (2% RH). No initial field calibration is necessary; however, long-term stability is maintained with a minimal drift under 1% RH/year.

Q: How is maintenance typically performed on this device?

A: Routine maintenance is simple due to its robust IP65 ABS construction and stable sensor. Periodic visual inspections and occasional cleaning of the housing are recommended to maintain optimal performance.

Q: What are the key usage advantages of the RHT Humidity Transmitter?

A: The transmitter offers precise, real-time humidity measurement, an easy-to-read LCD display, broad operating range, and stable analog connectivity. Its reliability and low power consumption make it a cost-effective solution for building automation.

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