Description
Testo 625 – Thermohygrometer
- Measures air temperature / RH
- Calculates dew point / wet bulb temperature
- Displays min/max values, hold function, power off mode
- Integrated long-life humidity sensor for long lasting quality
The testo 625 compact thermohygrometer has a humidity sensor, which measures the air temperature and RH. It can also calculate the dew point and wet bulb temperature.
The meter has a hold function that freezes the last reading, and powers off automatically to conserve battery power. A long-life humidity sensor ensures that you will get the best possible results for years to come, and the easy to read, backlit display shows min/max readings at the touch of a key.
The Testo 625 is ideal for monitoring production and storage conditions, and ensuring the quality of products, and the right indoor climate in archives and libraries. It is excellent for detecting mold, or locating places at risk in buildings.
Monitoring production and storage conditions
Our temperature/humidity measuring instruments are used around the world in production, storage and server rooms, museums, archives, cold storage warehouses, containers and sales counters.
Manufacturers, carriers, or dealers of sensitive products must ensure that specified temperature or humidity values are observed during production and storage. The testo 635 offers the option of performing spot measurements in relevant places.
The testo 625 is a compact instrument with integrated humidity probe. It displays relative humidity, wet bulb temperature or dew point, and temperature. For measurements in difficult to reach places, the humidity probe can simply be removed and attached to the handle with a probe cable (accessories). Alternatively, the readings can be transmitted wirelessly by radio over great distances from the probe to the measuring instrument.
Manufacturer Specs
| Temperature – NTC | |
| Measuring range | 14.0° to 140.0 °F / -10 to +60 °C |
| Accuracy | ±0.9 °F / ±0.5 °C |
| Resolution | 0.1 °F / 0.1 °C |
| Temperature – Type K TC | |
| Measuring range | -328.0° to 2498.0 °F / -200 to +1370 °C |
| Accuracy | See probe data |
| Resolution | 0.1 °F / 0.1 °C |
| Radio probe | |
| Humidity – Capacitive | |
| Measuring range | 0.0 to 100.0 %rH |
| Accuracy | ±2.5 %rH (5 to 95 %rH) |
| Resolution | 0.1 %rH |
| General technical data | |
| Dimensions | 7 x 2 x 2 in. / 182 x 64 x 40 mm |
| Operating temperature | -4.0° to 122.0 °F / -20 to +50 °C |
| Housing | ABS |
| Battery type | 9V block battery, 6F22 |
| Battery life | 70 h (without radio operation) |
| Storage temperature | -40.0° to 158.0 °F / -40 to +70 °C |
| Weight | 7 oz. / 195 g |




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