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

For diesel engines, the smoke count is an important parameter, not only for evaluating emissions, but also for the correct adjustment of the fuel injection. With the smoke tester testo 338, the determination of degree of blackening is revolutionarily easy; no stationary measurement equipment, no analysis electronics – with just one portable one-hand measuring instrument.

• Handy and robust Easily possible to carry to the desired application site

• Determination of soot concentration (mg/m³) as well as Filter Smoke Number (FSN) or Bosch number

• Easy one-handed operation

• Direct analysis and display of measurement values, optional on-site printout of data with Testo fast printer

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

Temperature probe with clamping bracket 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.

• NTC temperature sensor

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

• Short response time thanks to the exposed sensor

• Measuring range: -50 to +125 °C

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)