| Agency Approvals | : | UL 916; CE: EN61000-6-2, EN61000-6-3, EN61000 Series, immunity, EN 61326-1; FCC Part 15 Class A; REACH, RoHS, RoHS 2 (China), RCM (Australia), ICES-003 (Canada), UKCA (UK) |
| Collection | : | Plant Room Air Quality Sensors |
| Communication Specifications | : | BACnet MSTP or Modbus via RS-485, selectable |
| Communication | : | Protocol |
| Display Resolution | : | Temp: 0.1 °C or °F, Humidity: 0.1% RH |
| Display Type | : | LCD, Positive Display with Backlight |
| Enclosure Material | : | Polycarbonate; flammability rating UL 94 V0 |
| Humidity Calibration Certificate | : | Replaceable RH element available in 1% & 2% with NISTcalibration certificate |
| Humidity Measurement Accuracy | : | ±2% from 10 to 80% RH @ 25°C (77 °F) |
| Humidity Measurement Linearity | : | Included in accuracy specification |
| Humidity Measurement Resolution | : | 0.1% RH |
| Humidity Output Range | : | 0 to 100% RH |
| Humidity Sensor Type | : | Thin-film capacitive, replaceable |
| IP Protection | : | IP65 |
| Input Specifications | : | Class 2; 20 to 30 Vdc, 24 Vac, 50 to 60 Hz |
| Measurement Type | : | RH / Temperature |
| Measurement Values Displayed | : | Temp: °C or °F, Humidity: % RH |
| Operating Humidity | : | 0 to 95% RH non-condensing |
| Operating Temperature | : | -25 to 70 °C (-13 to 158 °F) |
| Temperature Measurement Accuracy | : | ±0.2 °C (±0.4 °F) typical |
| Temperature Measurement Range | : | 0 to 50 °C (32 to 122 °F) |
| Temperature Measurement Resolution | : | 0.1 °C (0.1 °F) |
| Temperature Sensor Type | : | Solid state, integrated circuit |
| Terminal Blocks | : | Screwless terminal block with spring actuator, 16-24 AWG |
| VOC Sensor Type | : | Solid state |
HD2 Series Protocol Humidity Sensors provide an ideal solution for measuring relative humidity in a wide range of conditions. All models are equipped with a thin-film capacitive humidity sensor that is easy to replace in the field. A solid state temperature sensor provides high accuracy measurements.
HD2 is an all-in-one device combining humidity and temperature sensing. Intended for duct mount applications, the device ensures a building’s optimum temperature and humidity levels, resulting in greater energy efficiency.
Each device is an active sensor that converts a humidity or temperature measurement into BACnet MS/TP or Modbus RTU.