Dwyer Instruments RHPX-3SSAB-00 Humidity & Temperature Transmitter, 0-100% RH, 10kΩ Thermistor, IP66 Wall Mount Enclosure

The transmitter features field-selectable analog outputs. You can configure it to provide a 2-wire 4-20 mA current loop signal, a 0-5 VDC voltage output, or a 0-10 VDC voltage output. This flexibility allows for direct compatibility with most PLCs, DDCs, and building automation system controllers without requiring additional signal conditioners.

The unit operates on a wide-range DC power supply from 10 to 35 VDC. This makes it compatible with standard 24 VDC power supplies commonly used in industrial and building control panels. Ensure your power source can provide sufficient current for the selected output load.

While its IP66 rating provides strong protection against dust ingress and powerful water jets from any direction, it is primarily designed for demanding indoor environments like plenums, mechanical rooms, or semi-protected outdoor locations. For full outdoor exposure, consider additional sun shields or enclosures to protect against UV degradation and extreme thermal cycling beyond its -40°C to 60°C operating range.

The capacitive polymer humidity sensor is factory calibrated. The specified accuracy for humidity is typically ±2% RH across much of its range, though specific tolerance bands should be confirmed via the datasheet. The integrated 10 kΩ Type II thermistor provides the temperature measurement. Field calibration is generally not required, but the analog output scaling can be adjusted if needed during commissioning.