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Product Description
Testo 645 Humidity/Temperature Measuring Instrument measuring instrument offer two probe inputs for attaching a comprehensive range of probes:
Channel 1: temperature probe, type K/J/S, NTC
Channel 2: humidity/temperature probe or Pt 100 temperature probe
At the touch of a button, the Thermohygrometer automatically indicates the measurement parameters of temperature, relative humidity, dew point, pressure dew point, absolute humidity, degree of humidity and enthalpy, along with min., max. and mean values, as well as the last measured value. Convenient evaluation of the measurement data is possible using the optional PC software. Measurement data can also be printed out directly at the measuring location via the optional Testo fast printer.
Features of Testo Humidity/Temperature Measuring Instrument:
- High precision humidity measurement up to ± 1% RH
- It can read up to 3,000 readings (Internal reading memory)
- Convenient data evaluation via optional PC software
- Possibility of attaching a really wide range of optional probes.
Additional Information
| Weight | 1 kg |
|---|---|
| Manufacturer | Testo |
| Model No | 645 |
| Measuring Parameters | Humidity - Capacitive, Pt100, Temperature - NTC, Temperature - TC Type J (Fe-CuNi), Temperature - TC Type K (NiCr-Ni), Temperature - TC Type S (Pt10Rh-Pt) |
| Temperature | (Pt100) -200 to +800 °C |
| Accuracy | ±0.1 % of mv (200.1 to 800 °C), ±0.2 °C (-200 to 200 °C) |
| Resolution | 0.1 °C |
| Temperature - NTC | -50 to +150 °C |
| Resolution | 0.1 °C |
| Temperature - TC Type K (NiCr-Ni) | -200 to +1370 °C |
| Accuracy_1 | ±0.3 °C (-60 to +60 °C), ±0.5 % of mv (+60.1 to +1370 °C), ±0.5 % of mv (-200 to -60.1 °C) |
| Resolution | 0.1 °C |
| Temperature - TC Type J | -40 to +750 °C |
| Accuracy_2 | ±0.3 °C (-60 to +60 °C), ±0.5 % of mv (+60.1 to +750 °C), ±0.5 % of mv (-200 to -60.1 °C) |
| Resolution | 0.1 °C |
| Temperature - TC Type S (Pt10Rh-Pt) | -50 to +1700 °C |
| Humidity - Capacitive | 0 to 100 %RH |
| Accuracy_3 | See probe data |
| Resolution | 0.1 %RH (-50 to +150 °C) |
| Operating Temperature | 0 to 50 °C |
| Storage Temperature | -20 to 70 °C |
| Number of channels | 2-channel |
| Housing | ABS |
| Battery | 9V block battery |
| Battery Life | 45 Hours |
| Display Size/Type | 4 lines/LCD |
| Dimension | 215 x 68 x 47 mm |
| Weight | 255 Grams |
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