Stationary measuring instruments
Transmitters for stationary industrial and service applications for differential pressure, temperature, humidity, flow rate and dew point measurements.
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Instrument type
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testo 6321 – accurate pressure/flow/velocity transmitter
Art.nr 0555 6321For applications such as air conditioning and ventilation
- No zero-point operation thanks to automatic zeroing
- Can be supplied with several different pressure ranges
- High long-term stability and repeatability
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testo 6351 – transmitter for low differential pressures
Art.nr 0555 6351Units: volume flow, flow rate, differential pressure.
- No zero-point operation thanks to automatic zeroing
- Effective overpressure protection
- High long-term stability and repeatability
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testo 6381 – for cleanrooms and hygiene zones
Art.nr 0555 6381For cleanroom applications and different hygiene zones in e.g. hospitals.
- Zero in zero-point operation thanks to automatic zeroing
- Effective overpressure protection
- Measures very low differential pressures (minimum measuring range 0...10 Pa)
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testo 6383 – with hygienic front panel
Art.nr 0555 6383Installed in cleanroom applications and various hygiene zones in e.g. hospitals.
- Hygienic front panel for reading in clean zone
- Display with alarm indication (optional)
- No zero point drift thanks to automatic zero adjustment function
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testo 6451 – flow transmitter 0,25 … 75 m3/h
11 950 Art.nr 0555 6451Flow measurement - 0,25 ... 75 Nm3/h
- Suitable for pipe diameter DN 15
- Four measurement parameters in one instrument: air flow, totalizer, temperature, operating pressure.
- Best system integration thanks to two analog outputs: 4 ... 20 mA
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testo 6452 – flow rate transmitter 0.8 … 225 m³/h
12 450 Art.nr 0555 6452Flow measurement - 0.8 ... 225 m³/h
- Suitable for pipe diameter DN 25
- Thread connection R 1
- Best system integration thanks to two analog outputs: 4 ... 20 mA
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testo 6453 – flow transmitter 1,4 … 410 m³/h
15 995 Art.nr 0555 6453Flow measurement - 1,4 ... 410 m³/h
- Suitable for pipe diameter DN 40
- Thread connection R 1 ½
- Best system integration thanks to two analog outputs: 4 ... 20 mA
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testo 6454 – flow transmitter 2,5 … 700 m³/h
16 950 Art.nr 0555 6454Flow measurement - 2,5 ... 700 m³/h
- Suitable for pipe diameter DN 50
- Thread connection R 2
- Best system integration thanks to two analog outputs: 4 ... 20 mA
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testo 6456 – flow rate transmitter 9 … 27 590 m³/h
Art.nr 0555 6456Flow rate measurement - 9 ... 27 590 m³/h
- Suitable for large pipe diameters DN 65 - 250
- Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
- Dual analog output, or pulse and analog output
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testo 6457 – flow transmitter 8 … 27 450 m³/h
Art.nr 0555 6457Flow measurement - 8 ... 27 450 m³/h
- Suitable for large pipe diameters DN 65 - 250
- Direct compressed air measurement with simultaneous display of three measured values thanks to standard TFT display
- The sensor can be removed under pressure
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testo 6448 – flow transmitter for flexible pipe dimensions
Art.nr 0555 6448For compressed air for flexible pipe dimensions (DN40 - DN300)
- Can be installed under pressure
- Measures flow velocity (m/s) in the measuring range 0...80 m/s or 160 m/s, consumption measurement in Nm³ and median temperature in °C.
- Several measurement sites can be covered by one sensor
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testo 6741 – dew point transmitter without display
15 950 Art.nr 0555 6741Reliable dew point measurement.
- Documented precision adjustment at -40°C tpd
- 4 ... 20 mA with two-wire technology
- Process connection G1/2
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testo 6743 – dew point transmitter with display
20 100 Art.nr 0555 6743For efficient moisture measurement in compressed air or dry air or dry gas
- Reliable dew point measurement in the range -45 °Ctd to + 30 °Ctd
- Testo's highly accurate and long-term stable moisture sensor
- Documented precision adjustment at -40°C tpd
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testo 6621 – moisture transmitter for wall without display
Art.nr 6621 A01 C00Wall-mounted humidity transmitter with testo's highly accurate and long-term stable humidity sensor.
- Easy and safe handling
- Measuring range moisture: 0...100%.
- Measuring range temperature: 0... +60°C
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testo 6621 – wall-mounted moisture transmitter with display
Art.nr 6621 A01 C01Wall-mounted humidity transmitter with display
- Testo's highly accurate and long-term stable moisture sensor
- Measuring range moisture: 0...100%.
- Measuring range temperature: 0... +60°C
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testo 6621 – moisture transmitter for channels without display
Art.nr 6621 A02 C00Testo's highly accurate and long-term stable moisture sensor
- Easy and safe handling
- Measuring range of moisture: 0...100%.
- Measuring range temperature: 0... +60°C
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testo 6621 – wall moisture transmitter with external sensor
Art.nr 6621 A3 C01Wall-mounted humidity transmitter with external sensor and display
- External sensor - benefit of faster response time and easier calibration
- Measuring range of moisture: 0...100%.
- Measuring range temperature: 0... +60°C
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testo 6621 – moisture transmitter for channels with display
Art.nr 6621 A02 C01Humidity transmitter for duct mounting with display
- Testo's highly accurate and long-term stable moisture sensor
- Measuring range of moisture: 0...100%.
- Measuring range temperature: 0... +60°C
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testo 6651 – moisture transmitter for sensitive environments
Art.nr 0555 6651Moisture transmitter with Testo's highly accurate and long-term stable moisture sensor
- Robust precision transmitter
- -30...120°C
- 0...100%RH
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testo 6631 – moisture transmitter for greenhouse applications
Art.nr 0555 6631Especially for monitoring critical environments in greenhouses
- Testo's highly accurate and long-term stable moisture sensor
- -10...60°C
- 0...100%RH
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testo 6681 – moisture transmitter series for sensitive environments
Art.nr 0555 6681For monitoring and controlling sensitive environments in process engineering contexts
- -40...180°C
- 0...100%RH
- Interchangeable sensors
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