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General| Humidity Range | 0 to 100 %RH |
|---|---|
| Protection Class | IP65 |
| Measurement Parameters | Temperature and Humidity |
| Humidity Accuracy | \u00b12 %RH (5 to 95 %RH at 25 °C) |
| Output Signal | 4 to 20 mA |
| Power Supply | 12 to 30 VDC |
| Operating Conditions | Non-condensing |
| Housing Material | Plastic (ABS) |
Guidance on preventing harm to users and equipment, emphasizing proper handling and maintenance.
Defines the measured physical quantities: relative humidity (% RH) and temperature (°C/°F).
Specifies the operational limits for humidity (0-100% RH) and temperature (-20 to +70 °C).
Details the measurement precision for humidity and temperature, including tolerance values.
Describes the available analog output signals (e.g., 0-10 V, 4-20 mA) for data transmission.
Detailed instructions for connecting the testo 6621 transmitter, including 2-wire/4-wire technology.
Procedure for calibrating the transmitter using an adapter and a reference measuring instrument.
Guidance on installing the P2A Software, USB drivers, and performing software updates for the testo 6621.
Procedure for performing a single-point calibration of the testo 6621 using a reference instrument.
Steps for performing a two-point calibration for humidity and temperature using a humidity generator.
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