R & D

Use the testo 420 differential pressure measuring instrument to carry out simple, efficient tests on filters. You can also use the measuring instrument in conjunction with a Pitot tube to measure flow velocity and volume flow really easily in ventilation ducts.

• Differential pressure measurement, e.g. to check filters in air conditioning and ventilation systems

• Calculate flow velocity and volume flow using a Pitot tube

• Handy instrument featuring a large display and user-friendly menu guidance

• Save measurement data for analysis and documentation

The extremely fast-action surface temperature probe with sprung thermocouple strip is suitable for a wide range of applications – including uneven surfaces.

• Fast response time (3 seconds) thanks to the thermocouple strip

• Thermocouple type K

• Also suitable for uneven surfaces

• Measuring range short-term up to +500°C

The waterproof immersion and penetration probe guarantees fast temperature measurement in liquids and semi-solid media.

• Thermocouple type K

• Response time of 7 seconds

• Waterproof

• Measuring range: -60 to +400 °C

The ideal probe for measuring the humidity and temperature of the air in storage, refrigerated and work areas, as well as in air conditioning/ventilation ducts. Also suitable for long-term measurements.

• Humidity sensor with long-term stability

• Temperature measuring range: -20 to +70 °C

Temperature probe with magnet for surface measurements on metal surfaces

• Self-adhesive thanks to a magnet: probe for measuring surface temperature on metal surfaces

• TC Type K temperature probe with 1.6 m cable

• Measuring range: -50 to +400 °C

Use the robust air temperature probe with exposed sensor (thermocouple type K) to measure air temperature with a short response time. It can be connected to a wide range of measuring instruments.

• Thermocouple type K 

• Short response time thanks to the exposed sensor 

• Can be connected to a wide range of measuring instruments

• Measuring range: -60 to +400 °C

 Pipe wrap probe for pipe diameter 5 to 65 mm, with exchangeable measuring head. Meas. range short-term up to +280°C, TC Type K 

• With clamping bracket: enables quick, easy attachment of the probe to pipes with a diameter of 5 to 65 mm

• TC Type K temperature probe with 1.2 m cable

• Measuring range: -60 to +130 °C, briefly up to +280 °C

The waterproof immersion/penetration probe with NTC sensor records the temperature in liquids and semi-solid media quickly and accurately.

• NTC temperature sensor

• Waterproof

• Measuring accuracy of up to ±0.2 °C

• Measuring range: -50 to +150 °C

Fast, flexible and waterproof: the immersion probe is ideal for carrying out accurate immersion measurements in various liquids.

• Short response time of 2 seconds

• Very large measuring range: -60 to +1000 °C

• Waterproof

• Thermocouple type K

Waterproof, robust and versatile: this temperature probe with sturdy probe shaft and widened measuring tip is ideal for measuring the temperature on flat surfaces.

• Extra-wide measuring tip for flat surfaces

• Thermocouple type K

• Waterproof and robust (sturdy probe shaft)

• Measuring range: -60 to +400 °C

Use the robust air temperature probe with exposed sensor (NTC) to measure air temperature with a short response time. It can be connected to a wide range of measuring instruments.

• Short response time thanks to the exposed sensor

• High level of accuracy of up to ±0.2 °C 

• Measuring range: -50 to +125 °C

• NTC temperature sensor

Accurate, waterproof and versatile: the temperature probe measures surface temperatures of up to 1000 °C. Its small measuring head is ideal for carrying out measurements on flat surfaces. Short response time.

• Low-mass probe: very short response time for accurate measurement results

• Thermocouple type K

• Waterproof

• Very large measuring range: -60 °C to +1000 °C

Use this fast-action temperature probe to measure surface temperatures accurately and reliably, even in inaccessible areas – the angled probe tube makes this possible.

• Fast response time (3 seconds) thanks to the thermocouple strip

• Thermocouple type K

• Also suitable for uneven surfaces

• Measuring range: -60 to +300 °C

Thanks to its NTC sensor, the waterproof surface temperature probe delivers reliable, accurate measurement results even at low temperatures. For measurements on flat surfaces.

• NTC temperature sensor

• Measuring accuracy of up to ±0.2 °C

• Ideal for measurements on refrigeration systems, in cold storage warehouses/rooms or outdoors

• Measuring range: -50 to +150 °C

Temperature probe with Velcro for surface measurements on pipes

• With Velcro: makes it easy to attach the surface probe to pipes with a pipe diameter of up to 75 mm

• NTC temperature probe with cable

• Measuring range: -50 to +70 °C

Fast-action temperature probe with penetration tip – ideal for temperature measurements in pastes and semi-solid media, in liquids and in the air.

• 1.5 mm thin probe tip for fast temperature recording, 60 mm long probe shaft

• Very short response time of 3 seconds

• Measuring range: -60 to +800 °C

• Splash-proof in accordance with IP54

Measure humidity with ultra-precision: using the high-quality digital humidity and temperature probe (Ø 12 mm). Suitable for use in storage, refrigerated or work areas, as well as in air conditioning/ventilation ducts.

• High-precision humidity measurement: accuracy of up to ±1% RH

• Intelligent calibration concept

• Temperature measuring range: -20 to +70 °C

The globe thermometer is suitable for the measurement of radiant heat – e.g. in the context of standard-compliant comfort level measurement at the workplace.

• For the measurement of radiant heat according to ISO 7243, ISO 7726, DIN EN 27726 and DIN 33403

• Thermocouple type K 

• Measuring range: 0 to + 120 °C

In combination with the testo 635, the robust humidity probe measures the humidity and temperature of the air. Because the probe can be used up to 125 °C, it also enables measurements in air exhaust ducts. In addition, it is suitable for measuring the material equilibrium moisture content, for example in bulk materials.

• Probe for relative humidity and air temperature measurements

• Measurements of the material equilibrium moisture content possible

• Temperature measuring range: -20 to +125 °C (briefly up to +140 °C)

Exceptionally fast temperature probe with a large measuring range for measurements in air, liquids, pastes and on surfaces

• TC Type K temperature probe with flexible measuring tip, short response time and 2 m cable

• Very fast temperature measurement in air, liquids, pastes and on surfaces

• Measuring range: -200 to +1000 °C