Humidity and temperature transmitter

The HTZ Smart HART humidity and temperature transmitter from Moore Industries simultaneously measures temperature and humidity in processes that require extremely close monitoring of humidity, temperature and dewpoint.

This includes clean rooms, assembly areas and storage facilities in the food processing, biotechnology and similar industries.

HART communications is claimed to be a first for a humidity transmitter and allows the unit to be programmed or queried from any point along one of the transmitter’s dual 4-20 mA loops.

The loop-powered (2-wire) device provides good measurement accuracy for humidity, temperature and dewpoint in a single instrument.

Accuracy of the relative humidity measurements is up to ±0.75% RH, the temperature measurements is up to ±0.036°C and the dewpoint calculation is within ±0.5°C.

The transmitter incorporates a sensor module which consists of two parallel probes, one containing a capacitance-based humidity sensor and the other containing a temperature sensor.

The sensor module can be mounted on any surface or pipe, such as an HVAC duct or a clean room wall. Either probe can be removed for easy cleaning, calibration or replacement.

The device also incorporates a humidity and temperature display module that can be mounted up to 10 m away from the sensor module. The display module provides power to the sensor probes and produces two 4-20 mA output signals.

Each output can be programmed to represent relative humidity, temperature or dewpoint. The display can be programmed to show humidity, temperature, dewpoint, analog output or scroll between the values.