| Customization: | Available |
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| Installation Type: | Wall-Mounted Type |
| Sensing Type: | Semiconductor IC |
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The FHT31 employs the new humidity / temperature Sensirion sensor element SHT21 with excellent long term stability and resistance against pollutants. In combination with a long calibration experience, the FHT31 provides a measurement accuracy of ±3%RH and is available for duct-mounted with current, voltage output.
| Parameter | Temperature | Relative Humidity |
| Measurement Range | 0...+50°C -40...+60°C -20...+80°C |
0...100% RH |
| Accuracy at 25°C | ±0.3°C | ±3% RH (20...80% RH) |
| Stability | <0.1°C / year | <0.5%RH / year |
| Response | <15s | <12s(63%) |
| power supply | 2-wire: 12...24V 3-wire: 15...24V | |
| Output | 2-wire: 4...20mA 3-wire: 4...20mA / 0...1/5/10V |
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| Load | 2-wire: (VDD - 7V) / 0.02A 3-wire: Current mode less than 500Ω, Voltage mode greater than 10kΩ |
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| Sensor protection | membrane filter | |
| Housing material | Polycarbonate | |
| Protection grade | IP65 | |
| SERIES | OUTPUT | T-SCALING | DISPLAY |
| FHT31 | (A) 2-wire current mode 4...20mA (B) 3-wire current mode 4...20mA (D) 3-wire voltage mode 0...10V (E) 3-wire voltage mode 0...5V (F) 3-wire voltage mode 0...1V |
(T1) 0... +50°C (T2) -40...+60°C (T3) -20...+80°C |
(D) LCD |
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