Telaire EHRH Relative Humidity Transmitter is a waterproof RH sensing element and package, which is ideally suited for monitoring relative humidity in high RH/harsh environment applications or where washdowns are required. The unit is designed for continuous monitoring of relative humidity and temperature and is available in ±2% accuracy.
Applications
- Greenhouses
- Textile Mills
- Food Processing
- Shipping Containers
- Swimming Pools
- Hospital Suites
Features
- Waterproof Sensing Element and Housing
- Compact Transmitter with Built-in Sensor
- Bulk Polymer Resistance RH Sensor
- Resistant to Contamination
- Thermistor Temperature Measurement
- Temperature Compensation
Specifications
| Humidity | |
|---|---|
| Sensing Element | Resistance change of bulk polymer sensor |
| Accuracy at 77°F (25°C) | ±2% RH. 30 to 95% RH including hysteresis, linearity, and repeatability. |
| Temperature Effect | Less than 0.11% per ºF (0.06% per ºC) |
| Sensitivity | 0.1% RH |
| Repeatability | 0.5% RH |
| Linearity | See accuracy |
| Hysteresis | Less than 1% |
| Operating Range, Sensor & Electronics | 0% to 100% RH, -20ºC to 54ºC (-4ºF to 129ºF) |
| Maximum Air Velocity | 10,000 ft/minimum (3,048 m/minimum) |
| Output Ranges | 4 to 20 mA current, two-wire, loop-powered for 0 to 100%, RH (standard) into 0 to 900 Ω |
| Temperature | |
|---|---|
| Sensing Element | Thermistor, 10 KΩ at 77°F (25ºC), two-wire measurement |
| Accuracy at 77°F (25ºC) | ±0.5ºF (±0.3ºC). Also available with 100 (RTD with 4 mA to 20 mA analog output. |
| Adjustment | |
|---|---|
| Zero | ±20%, non-interactive |
| Span | ±10%, non-interactive |
| Long Term Stability | Less than 2% drift per year typical |
Consult factory for further information.
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