Description
- Internal reading memory (3,000 readings)
- Convenient data evaluation via optional PC software
- Possibility of attaching a really
- wide range of optional probes thanks to a large accessory portfolio
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.
SPECIFICATIONS
| TEMPERATURE – PT100: | |
| Measuring Range | -200 to +800 °C |
| Accuracy | ±0.1 % of mv (200.1 to 800 °C) ±0.2 °C (-200 to 200 °C) |
| Reaction time | 0.1 °C |
| Temperature- NTC: | |
| Measuring Range | -50 to +150 °C |
| Resolution | 0.1 °C |
| Temperature- TC Type K (NiCr-Ni): | |
| Measuring Range | -200 to +1370 °C |
| Accuracy | ±0.5 % of mv (-200 to -60.1 °C)
±0.5 % of mv (+60.1 to +1370 °C) ±0.3 °C (-60 to +60 °C) |
| Reaction time | 0.1 °C |
| HUMIDITY – CAPACITIVE | |
| Measuring Range  | 0 to 100 %RH |
| Accuracy | see probe data |
| Reaction time | 0.1 %RH (-50 to +150 °C) |
| GENERAL TECHNICAL DATA: | |
| Dimensions | 215 x 68 x 47 mm |
| Operating temperature | 0 to +50 °C |
| Product-/housing material | ABS |
| Number of channels | 2-channel |
| Battery type | 9V block battery |
| Battery life | 45 h |
| Battery feature | The hour times are reduced by a factor of 5 if a 9V rech. battery is used |
| Display type | LCD (Liquid Crystal Display) |
| Display size | 4 lines |
| Storage temperature | -20 to +70 °C |
| Weight | 255 g |
