Michell Instruments HygroSmart WM Series RH Transmitter

Wall mount transmitter that measures 0 to 100% relative humidity & temperatures up to 185°F then outputs both & a third calculated value.

Michell Instruments HygroSmart WM281 RH Transmitter
Michell Instruments HygroSmart WM291 RH Transmitter

Retired products cannot be ordered

The Rotronic HygroFlex5-Series Humidity Transmitters is the recommended replacement

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Manufactured

By Michell Instruments

Includes

FREE Ground Shipping on orders of $1,000 or more
FREE Lifetime Tech Support

Product Specs

Features

Michell H8000 RH element, 0 to 100% humidity
- ±1.25% RH (5 to 95% RH) accuracy
- <0.03% RH/°C typical RH thermal coefficient
- Less than 10 second response time
PT100 1/3 DIN temp sensor, -40 to 185°F (-40 to 85°C)
- ±0.36°F (±0.2°C) accuracy
- ±0.018°F (±0.01°C) resolution
Available with LCD display (WM291) or without (WM281)
Modbus RTU over RS485 2-wire digital output

The Michell Instruments HygroSmart WM series RH transmitters are designed to reliably and accurately measure moisture and temperature in a wide variety of industrial and process applications. They are built with the HygroSmart I7000XP interchangeable sensor which holds its own calibration data so replacement is quick and easy.

These transmitters offer a choice of analog and digital outputs, ensuring compatibility with a variety of data acquisition systems. The RS485 Modbus RTU digital interface can be used for either digital multi-drop outputting or transmitter reconfiguration. Configuration is achieved via the display (WM291 only) or the optional Digicor2 software communication kit.