Testo, Test and Measurement

6337 9741 Compact RH/Temp Transmitter, RTD 4-wire by Testo

The probe is suitable for fixed measurement of relative humidity and temperature, even in meteorological conditions (IP54 conditions).

Testoterm offers accessories which enable 2 mounting variations: wall mounting, insertion into a duct.

8721 0025 Flow Matrix by Testo

The air flow grid (in conjunction with the appropriate measuring instrument) is your ideal measurement solution for determining flow velocity and volume flow on laminar flow supply air diffusers.

Use the air flow grid to carry out accurate measurements on laminar flow supply air outlets. Use in conjunction with a differential pressure measuring instrument (e.g. testo 420, testo 480 or testo 435-4) to calculate flow velocity and volume flow.

The air flow grid (360 x 360 mm) can be used over a large area and is particularly suitable for carrying out measurements on HEPA filters and safety cabinets in cleanrooms.

Particularly useful: you can also use the screw-on telescope (can be extended to 1800 mm) to carry out volume flow measurements on high ceiling diffusers.

• Volume flow measurement on large supply air diffusers, HEPA filters and safety cabinets in cleanrooms
• The telescope makes it possible to carry out measurements on high ceiling diffusers
• Ideal for large surface areas
• Air flow grid dimensions: 360 x 360 mm

6321 Differential Pressure Transmitter - base unit, standard housing plastic by Testo

A differential pressure transmitter with a good price/performance ratio for applications in air conditioning and ventilation technology. The automated building services must always be monitored precisely, whereby the requirements placed on the measuring technology are increased. testo 6321 fulfills these requirements by ensuring the best possible system function, optimization of the climatic conditions and energy savings by means of highly accurate measurement, stable over the long-term, of the differential pressure.

Areas of application:

• Industrial and commercial buildings, e.g. in production and storage
• Offices and administrational buildings
• Sales areas and exhibition halls
• Museums and libraries
• School buildings, hotels, clinics etc.

• Measurement of differential pressure in the measuring range of 100 Pa to 2 bar
• Magnetic valve for automatic zero-point adjustment guarantees high temperature-independent accuracy and long-term stability
• Accuracy ±1.2 % of measuring range + intrinsic error of 0.3 Pa valid for zeroing cycle of 60 sec/nominal temperature +22 °C
• P2A software for parameterization, adjustment and analysis, saves time and costs in commissioning and maintenance
• Freely scalable: ±50% of measuring range final value and free scalability within the measuring range
• Diverse analog outputs and measuring ranges
• Display optional

6351 Differential Pressure Transmitter - standard housing plastic by Testo

The differential pressure transmitter testo 6351 was developed specially for monitoring differential pressure in the measuring range from 50 Pa to 2000 hPa. In cleanroom technology, the maintenance of positive pressure prevents the entry of contaminated air. In order to keep the cleanroom conditions constant, the transmitter additionally calculates the parameters volume flow and flow velocity from the measured differential pressure.

The testo 6351 is particularly outstanding thanks to the automatioc zero-point adjustment which ensures high accuracy and long-term stability.

The integrated self-monitoring and early warning function also guarantees the operator high system availability.

• Measurement of differential pressure, flow velocity and volume flow
• Automatic zero-point adjustment guarantees high, temperature-independent accuracy and long-term stability
• Plastic housing
• Display with multi-language operating menu and optical alarm display
• Ethernet, relay and analog outputs allow optimum integration into individual automation systems
• Self-monitoring of the transmitter and early warning function guarantee high system availablity
• The P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
• Scalability of ±50 percent of the measuring range final value and free scalability within the measuring range
• Configurable alarm management with adjustable response delay and alarm acknowledgement

6381 Differential Pressure Transmitter with optional T/RH- standard housing metal by Testo

The differential pressure transmitter testo 6381 was developed specially for monitoring differential pressure in the measuring range from 10 Pa to 1000 hPa. In cleanroom technology, the maintenance of positive pressure prevents the entry of contaminated air. In addition to this, the flow velocity or the volume flow can be calculated from the measurement of the differential pressure in a Pitot tube. Thanks to an optional probe from the probe series 6610, the additional recording of humidity and temperature with one instrument is also possible.

The testo 6381 is particularly outstanding thanks to the automatioc zero-point adjustment which ensures high accuracy and long-term stability.

The integrated self-monitoring and early warning function also guarantees the operator high system availability.

• Measurement of differential pressure, flow velocity, volume flow; optional: humidity and temperature
• Automatic zero-point adjustment guarantees high, temperature-independent accuracy and long-term stability
• Low measurement range up to 10 Pa ensures very high precision at lowest pressures
• Ethernet, relay and analog outputs allow optimum integration into individual automation systems
• The P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
• Configurable alarm management with adjustable response delay and alarm acknowledgement

6383 Differential Pressure Panel Transmitter with optional T/RH - standard panel housing metal by Testo

The differential pressure transmitter testo 6383 was developed specially for monitoring low differential pressures in the measuring range from 10 Pa to 10 hPa. In cleanroom technology, the maintenance of positive pressure prevents the entry of contaminated air in critical zones. Thanks to an optional internal or external probe from the probe series 6610, the additional recording of humidity and temperature with one instrument is also possible.

The testo 6383 is particularly outstanding thanks to the automatic zero-point adjustment which ensures high accuracy and long-term stability.

The integrated self-monitoring and early warning function also guarantees the operator high system availability.

• Measurement of differential pressure; optional: humidity and temperature
• Flat housing allows flush surface integration in the cleanroom wall
• Ethernet, relay and analog outputs allow optimum integration into individual automation systems
• Self-monitoring of the transmitter and early warning function guarantee high system availability
• The P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
• Configurable alarm management with adjustable response delay and alarm acknowledgement

6681 Temperature & Humidity Transmitter by Testo

Industrial humidity measurement demands absolute professionalism. Not only in running the system, but also in the measuring technology used. The industrial humidity transmitter testo 6681, combined with the probe series testo 661x fulfils these high demands. The testo 6681 has a number of additional features, above and beyond the properties and benefits of a conventional transmitter, which will delight practitioners. This and other reasons make the

testo 6681 the first choice in drying technology, trace humidity and compressed air process technology, as well as in demanding air conditioning technology, e.g. in cleanrooms.

• Optimum adjustment concept thanks to adjustment of the entire signal chain incl. analog adjustment
• Profibus, Ethernet, relay and analog outputs allow optimum integration into individual automation systems
• Self-monitoring and early warning guarantee high system availability
• Calculation and presentation of all relevant humidity parameters
• P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
• Display with multi-language display
• Robust, easy-to-clean metal housing

6920 Temperature Transmitter with optional Set Point Adjuster by Testo

The differential pressure transmitter testo 6383 was developed specially for monitoring low differential pressures in the measuring range from 10 Pa to 10 hPa. In cleanroom technology, the maintenance of positive pressure prevents the entry of contaminated air in critical zones. Thanks to an optional internal or external probe from the probe series 6610, the additional recording of humidity and temperature with one instrument is also possible.

The testo 6383 is particularly outstanding thanks to the automatic zero-point adjustment which ensures high accuracy and long-term stability.

The integrated self-monitoring and early warning function also guarantees the operator high system availability.

• Measurement of differential pressure; optional: humidity and temperature
• Flat housing allows flush surface integration in the cleanroom wall
• Ethernet, relay and analog outputs allow optimum integration into individual automation systems
• Self-monitoring of the transmitter and early warning function guarantee high system availability
• The P2A software for parameterization, adjustment and analysis saves time and costs in commissioning and maintenance
• Configurable alarm management with adjustable response delay and alarm acknowledgement