• No zero-point operation thanks to automatic zeroing
• Can be supplied with several different pressure ranges
• High long-term stability and repeatability
• Effective overpressure protection
• Freely scalable: ± 50% of measuring range final value
• Display (optional)

Areas of application

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

Contact us for prices and more information

Inlägget testo 6321 – accurate pressure/flow/velocity transmitter dök först upp på Nordtec.

• Zero in zero-point operation thanks to automatic zeroing
• Effective overpressure protection
• High long-term stability and repeatability
• Display (optional)
• Can also be delivered with other print areas, call for more info.
• Units: volume flow, flow rate, differential pressure.

Contact us for prices and more information

Inlägget testo 6351 – transmitter for low differential pressures dök först upp på Nordtec.

The testo 6381 is one of the most accurate instruments and there are 18 different measurement ranges to choose from when ordering, from 0 … 10 Pa up to -1,000 … 1,000 hPa. Thanks to the automatic zeroing, there is no zero point drift. This transmitter also has no temperature dependency as zeroing is done at the process temperature. It also has a very good overpressure protection of 140% of the measuring range, as well as alarm management with adjustable response time and alarm acknowledgement.

• Zero in zero-point operation thanks to automatic zeroing
• Effective overpressure protection
• Measures very low differential pressures (minimum measuring range 0…10 Pa)
• High long-term stability and repeatability
• Display (optional)
• Temperature and humidity sensors (optional)
• Can also be delivered with other print areas, call for more info.

Contact us for prices and more information

Inlägget testo 6381 – for cleanrooms and hygiene zones dök först upp på Nordtec.

Transmitter for hygienic wall mounting
testo 6383 is specially designed to be installed in cleanroom applications and various hygiene zones in hospitals. It is one of the most accurate instruments and there are 10 different measurement ranges to choose from when ordering, from 0 … 10 Pa up to -10 … +10 hPa. Thanks to the automatic zeroing, there is no zero point drift. This transmitter also has no temperature dependency as zeroing is done at the process temperature. It also has a very good overpressure protection of 140% of the measuring range, as well as alarm management with adjustable response time and alarm acknowledgement. Optional temperature and relative humidity sensors can also be connected to the transmitter.

The transmitter can deliver data directly to an FMS system.

• Hygienic front panel for reading in clean zone
• Display with alarm indication (optional)
• Zero in zero point operation thanks to automatic zero adjustment function
• Effective overpressure protection
• High long-term stability and repeatability
• Can also be supplied with other print areas, call for more information.

Contact us for prices and more information.

Inlägget testo 6383 – with hygienic front panel dök först upp på Nordtec.

• Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
• Best system integration thanks to two analog outputs: 4 … 20 mA
• Highest measurement accuracy and integrated measuring tube avoid measurement errors
• Simple and cost-effective installation

In industrial companies, compressed air is an important energy source with high consumption costs. With Testo flow transmitters you get a very accurate measurement of compressed air consumption, allowing you to identify the potential for energy savings and lower costs. The flow transmitters can also be used for a targeted implementation of an environmental management system – e.g. according to ISO 50001 or ISO 14001.

Another application is leakage monitoring in compressed air systems. The flow transmitter can also be used to perform a peak load analysis to determine if compressed air is being generated with sufficient capacity. The newly developed “all-in-one sensor” records not only compressed air consumption and temperature, but also pressure, eliminating the need for a separate pressure measurement.

The flow transmitters of the testo 645X family use the calorimetric measurement principle, which makes additional pressure and temperature measurements unnecessary. In addition, there is no wear and tear on moving parts.

See the data sheet under the Download tab for full technical data.

Included in delivery

Flow transmitter for compressed air testo 6451

Inlägget testo 6451 – flow transmitter 0,25 … 75 m3/h dök först upp på Nordtec.

• Thread connection R 1
• Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
• Best system integration thanks to two analog outputs: 4 … 20 mA
• Highest measurement accuracy and integrated measuring tube avoid measurement errors
• Simple and cost-effective installation

In industrial companies, compressed air is an important energy source with high consumption costs. With Testo flow transmitters you get a very accurate measurement of compressed air consumption, allowing you to identify the potential for energy savings and lower costs. The flow transmitters can also be used for a targeted implementation of an environmental management system – e.g. according to ISO 50001 or ISO 14001.

Another application is leakage monitoring in compressed air systems. The flow transmitter can also be used to perform a peak load analysis to determine if compressed air is being generated with sufficient capacity. The newly developed “all-in-one sensor” records not only compressed air consumption and temperature, but also pressure, eliminating the need for a separate pressure measurement.

The flow transmitters of the testo 645X family use the calorimetric measurement principle, which makes additional pressure and temperature measurements unnecessary. In addition, there is no wear and tear on moving parts.

See the data sheet under the Download tab for full technical data.

Included in delivery

testo 6452 Flow meter for compressed air

Inlägget testo 6452 – flow rate transmitter 0.8 … 225 m³/h dök först upp på Nordtec.

• Thread connection R 1 ½
• Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
• Best system integration thanks to two analog outputs: 4 … 20 mA
• Highest measurement accuracy and integrated measuring tube avoid measurement errors
• Simple and cost-effective installation

In industrial companies, compressed air is an important energy source with high consumption costs. With Testo flow transmitters you get a very accurate measurement of compressed air consumption, allowing you to identify the potential for energy savings and lower costs. The flow transmitters can also be used for a targeted implementation of an environmental management system – e.g. according to ISO 50001 or ISO 14001.

Another application is leakage monitoring in compressed air systems. The flow transmitter can also be used to perform a peak load analysis to determine if compressed air is being generated with sufficient capacity. The newly developed “all-in-one sensor” records not only compressed air consumption and temperature, but also pressure, eliminating the need for a separate pressure measurement.

The flow transmitters of the testo 645X family use the calorimetric measurement principle, which makes additional pressure and temperature measurements unnecessary. In addition, there is no wear and tear on moving parts.

See the data sheet under the Download tab for full technical data.

Inlägget testo 6453 – flow transmitter 1,4 … 410 m³/h dök först upp på Nordtec.

• Thread connection R 2
• Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
• Best system integration thanks to two analog outputs: 4 … 20 mA
• Highest measurement accuracy and integrated measuring tube avoid measurement errors
• Simple and cost-effective installation

In industrial companies, compressed air is an important energy source with high consumption costs. With Testo flow transmitters you get a very accurate measurement of compressed air consumption, allowing you to identify the potential for energy savings and lower costs. The flow transmitters can also be used for a targeted implementation of an environmental management system – e.g. according to ISO 50001 or ISO 14001.

Another application is leakage monitoring in compressed air systems. The flow transmitter can also be used to perform a peak load analysis to determine if compressed air is being generated with sufficient capacity. The newly developed “all-in-one sensor” records not only compressed air consumption and temperature, but also pressure, eliminating the need for a separate pressure measurement.

The flow transmitters of the testo 645X family use the calorimetric measurement principle, which makes additional pressure and temperature measurements unnecessary. In addition, there is no wear and tear on moving parts.

See the data sheet under the Download tab for full technical data.

Included in delivery

testo 6454 flow meter for compressed air

Inlägget testo 6454 – flow transmitter 2,5 … 700 m³/h dök först upp på Nordtec.

The testo 6456 flow transmitter measures the standard air flow in compressed air according to the calorimetric principle, which means that the measurement method is independent of the process pressure and does not cause any permanent pressure loss.

Flexible: Suitable for large pipe diameters DN 65 – 250
Clear overview: Direct compressed air measurement with simultaneous display of three measured values thanks to the standard TFT display.
Best system integration: Dual analog output, or pulse and analog output.
Optional: With built-in pressure measurement (with output option F02)
Four measurement parameters in one instrument: flow rate, totalizer, temperature and pressure (with output option F02).

See the data sheet under the Download tab for full technical data.

Included in delivery

testo 6456 flow transmitter

Inlägget testo 6456 – flow rate transmitter 9 … 27 590 m³/h dök först upp på Nordtec.

The testo 6457 measures the standard air flow in the compressed air according to the calorimetric principle, which means that the measurement method is independent of the process pressure and does not cause any permanent pressure loss.

The testo 6457 flow transmitter has a patented quick coupling, which allows the sensor to be removed under pressure. This is a great advantage, especially in the case of larger nominal widths, as these often involve main lines that do not allow pressure relief for maintenance purposes.

Flexible: Suitable for large pipe diameters DN 65 – 250
Clear overview: Direct compressed air measurement with simultaneous display of three measured values thanks to the standard TFT display.
Quick release: the sensor can be removed under pressure
Three measurement parameters in one instrument: flow rate, totalizer and temperature.

See the data sheet under the Download tab for full technical data.

Included in delivery

testo 6457 flow transmitter

Inlägget testo 6457 – flow transmitter 8 … 27 450 m³/h dök först upp på Nordtec.