testo 625 - Thermohygrometer

Order-Nr.  0563 6251

  • 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 thermohygrometer comes into its own in all situations where the right indoor climate is crucial, like in archives, storerooms, buildings, and greenhouses. Calculates the dew point and wet bulb temperature quickly and accurately.

Product Description

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.

Wide range of accessories

The testo 625 comes with all the basic functions, and a wide range of optional features
  • Hand grip with sensor guide for hard to reach or virtually inaccessible places
  • Wireless hand grip and module for wireless readings over distances of up to 65 feet
  • Carry case that ensures your meter and sensors are safely stored, when in transit or not in use. The TopSafe case protects your meter effectively against dirt ingress and impact.
     

Areas of application

Ideal for monitoring production and storage conditions, and ensuring the quality of products, and the right indoor climate in archives and libraries. Excellent for detecting mold, or locating places at risk in buildings. For monitoring the indoor climate in the workplace and in greenhouses.

 

Delivery Scope

testo 625 thermohygrometer, humidity sensor head, calibration certificate, and batteries
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

Localising the risk of mould

The portable measuring instrument testo 625 is suitable for measuring indoor humidity and temperature. By calculating the dew point temperature, places at risk of condensation can be localised.

It provides initial information about whether mould is being caused by condensation, or if there is a risk of this occurring.

All of our temperature/humidity measuring instruments and probes include the humidity sensor developed and patented by Testo; it is both stable long-term and condensation-resistant.

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.

Thermal comfort

Assessing thermal comfort, based on the parameters of air temperature and relative humidity, is important for the well-being of the person using a room. Pleasant room conditions are a primary factor in the planning, selection and configuration of a heating and ventilation system.

Humidity can be specified as a relative or absolute value. Recommendations for the relative humidity in a room range between a minimum of 30% and maximum value of 65%. The humidity limit outside this range is either not reached or exceeded.

All of our temperature/humidity measuring instruments and probes include the humidity sensor developed and patented by Testo; it is both stable long-term and condensation-resistant.

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.