testo 6744, compressed air counter, diameter DN50 (2”), with analog, pulse, and switching output

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  testo 6383, differential pressure transmitter

  testo 6383 for cleanroom applications, with optional humidity and temperature measurement, selectable measuring ranges from 10 Pa to 10 hPa, selectable analog signal outputs, and optional display (depending on configuration)

  • The flat housing allows for flush mounting on the cleanroom wall
  • The low measuring range from 10 Pa ensures the highest accuracy for low pressure measurement
  • Transmitter for measuring differential pressure, as well as, optionally, humidity and temperature
  • Automatic zero point adjustment guarantees high accuracy independent of temperature and long-term stability

  testo 6383 differential pressure transmitter for cleanroom applications (panel mounting), optionally with temperature/humidity measurement function, accuracy ±0.3% of measuring range, automatic “zero point” adjustment, selectable measuring ranges from 10 Pa to 10 hPa, selectable analog signal outputs, external digital interface for adjustment and parameterization, display, data output in all pressure and humidity units.

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  testo 6381, differential pressure transmitter

  Calculates volumetric flow and flow velocity parameters, with optional humidity and temperature measurement, selectable measuring ranges from 10 Pa to 1000 hPa, selectable analog signal outputs, and optional display (depending on configuration).

  • Automatic zero point adjustment guarantees high accuracy independent of temperature and long-term stability
  • The low measuring range from 10 Pa ensures the highest accuracy for low pressure measurement
  • Transmitter for measuring differential pressure, flow velocity, and volumetric flow, as well as, optionally, humidity and temperature
  • Signal alarm function configuration: possibility to set signal delay and select the alarm acknowledgment type

  testo 6381 differential pressure transmitter with flow velocity calculation function and optionally with temperature/humidity measurement function, accuracy ±0.5% of measuring range, automatic “zero point” adjustment, selectable measuring ranges from 10 Pa to 1000 hPa, selectable analog signal outputs, external digital interface for adjustment and parameterization, optional display, data output in all pressure, flow, and humidity units.

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  testo 6621, humidity transmitter for air conditioning systems

  testo 6621 in wall or duct version, with selectable analog signal outputs, incl. two-line display (option), external interface for adjustment and commissioning, two analog outputs

  • Transmitter with two analog outputs (temperature/humidity)
  • High-precision Testo humidity sensor with long-term stability
  • Adjustment without dismounting the transmitter
  • P2A software for parameterization, adjustment, and analysis

  testo 6621 temperature/humidity transmitter, accuracy ±2.0 % RH, wall or duct version, selectable analog signal outputs, optional display, external digital interface for adjustment and parameterization, 2 analog outputs

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  testo 6741, compressed air counter, diameter DN15 (1/2”), with analog, pulse, and switching output

  Compressed air counter with various signal outputs: analog output, pulse output, 2 switching outputs
  Totalizing function (totalizer) for calculating overall consumption
  High accuracy: thanks to a defined nominal diameter (DN15), you can adjust the standard volumetric flow rate

  testo 6741 dew point transmitter, measuring range down to -45°Ctd, **without display**, connection type G1/2, 4…20 mA analog signal output, optional signal module connector with two switching outputs

  Product Description
  The testo 6741 instrument was specifically designed for measuring residual moisture in compressed or dry air (adsorption dryers). This type of measurement is successfully carried out thanks to the Testo humidity sensor and its proven and well-established long-term stability. The sensor’s effectiveness has been repeatedly confirmed through tests in international calibration laboratories (PTB, NIST, etc.), where the error limit of ± 1% RH was not exceeded for 5 years without sensor readjustment. Optimal accuracy is achieved due to special tuning in the residual moisture range.