The HygroMet4 is suitable for use wherever high humidity prevails for short or long periods. The HygroMet4 is equipped with an automatic sensor heater.
Rotronic HygroMet4
Description
The HygroMet4 is suitable for use wherever high humidity prevails for short or long periods. In such environments condensation could occur on conventional probes, thereby delivering incorrect values. This is particularly the case in meteorology, in cheese cellars, tunnels and caves.
Heating Function
The HygroMet4 is equipped with an automatic sensor heater. It heats the sensor above ambient temperature by 0.1…10 °C depending on the settings. Heating of the sensor prevents the formation of condensation.
Specifications
| Probe type | Meteorological probe |
| Operating range | -40…85 °C / 0…100 %rh |
| Accuracy at 23 ±5 °C | Heated: ±1.5 %rh |
| Power supply / Power consumption | 15…24 VDC / 5…24 VDC (only 0…1 V) With heater: <55 mA @ VDD = 5 VDC / <30 mA @ VDD = 24 VDC Without heater: <35 mA @ VDD = 5 VDC / <20 mA @ VDD = 24 VDC |
| Long-term stability | <1 %rh / year |
| Heating mode | Permanent heating / Interval / Depending on current measured value |
| Heating period | 1…255 min. |
| Heating element | SMD Thermo |
| Humidity sensor | SMD Thermo |
| Temperature sensor | PT100 1/3 DIN Class B |
| Response time t 63 | <25 sec. |
| Allowed wind speed | 20 m/s, with filter |
| Communication interfaces | RS-485 |
| IP protection rating | IP65 |
