The testo 645 humidity/temperature measuring instrument automatically indicates the measurement parameters of relative humidity, absolute humidity, dew point, degree of humidity, enthalpy and temperature at the touch of a button.Standard immersion/penetration probe
| Diameter probe shaft | 3 mm |
|---|---|
| Length probe shaft | 200 mm |
| Measuring range | -200 to +400 °C |
|---|---|
| Accuracy | Class A (-100 to +400 °C) Class B (Remaining Range) |
| Reaction time | 20 s |
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