Setra SRH Humidity Transmitter

Setra's Humidity Sensor (SRH) family consists of a wall mount, duct mount, and outside air unit. This product line is designed to complement Setra's pressure and current products while expanding the solution opportunities for the HVAC/building automation market and other relative humidity monitoring applications. All models feature removable sensor tips, NIST traceability, and a durable capacitive sensor capable of full-scale 0 to 100% RH measurement.

The SRH product line offers accurate humidity with active or passive temperature sensing available in ±2%, ±3%, or ±5% RH accuracy. Humidity transmitters configured with active temperature option feature jumper- selectable Tspan ranges of 40°C, 50°C, and 60°C.

This product suite utilizes field-replaceable sensor tips that allow the end user to replace the sensors on-site. This eliminates time consuming factory calibration, while minimizing downtime during service intervals. As an example, the duct mount probe is accessed by taking off the front cover, pulling out the probe, and replacing the sensor tip. 

Key component of comprehensive HVAC/R solution

The Setra humidity/temperature solution is an important part of our overall HVAC/R solution which also includes pressure and current. This bundle of products has established Setra as a premiere HVAC manufacturer and a full-solution player for HVAC customers.

Robust, proven capacitive sensor

The unique pairing of Setra's proven capacitance measurement technology with its custom ASIC (used in thousands of pressure devices) ensures reliable measure of RH levels from 0 to 100%. As a result, customers will experience better resistance to contamination, longer stability, and minimal drift.

Attractive/ low profile enclosures

The humidity family consists of three configurations: wall, duct, and outside air models. Great attention was given to the look of the wall mount, ensuring that it complements the décor of any building. It is a space conscious unit that takes up no more space than an electrical outlet. The duct and outside air models utilize a design that ensures ease of both assembly and probe removal for recalibration.

Three levels of RH accuracy - 2%, 3%, and 5%

There are three levels of accuracy available for Setra humidity sensors: 2%, 3%, and 5%. The sensors should not drift more than 1% annually but it is recommended that the sensor be checked each year to ensure high accuracy and dependability.

Model SRH Relative Humidity Transmitter Series for HVAC Building automation systems and other relative humidity monitoring applications. The Model SRH humidity transmitters are available with optional passive or active temperature sensing.

Applications for the Setra SRH Humidity Transmitter

• HVAC/R Control
• Indoor Air Quality (IAQ)
• Laboratories
• Antiquities Preservation