testo 6383, differential pressure transmitter

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  testo 6651, temperature/humidity transmitter for critical environmental conditions

  With the possibility of selecting analog signal outputs, optional display, optional Ethernet module, and optional relay (depending on configuration)

  • High-precision external Testo humidity probes with long-term stability (accuracy up to **±1.7 % RH** depending on the probe type)
  • The Ethernet module, relay, and analog outputs allow for optimal integration of the transmitter into individual automated systems
  • High-quality **digital probes** and the **intelligent calibration concept**
  • Self-monitoring and an **early warning function** ensure high system availability

  testo 6651 temperature/humidity transmitter for critical environmental conditions, accuracy up to ±1.7 % RH (depends on the probe type), selectable analog signal outputs, optional display, optional Ethernet module, optional relays, external digital interface for adjustment and parameterization, 2 analog outputs.

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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.

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  testo 6681, temperature/humidity transmitter

  testo 6681 with the possibility of selecting analog signal outputs, optional two-line display), optional Ethernet or Profibus module, data output in all humidity units, optional relay, optional third analog output

  • High-precision Testo humidity sensor with long-term stability for application in high-humidity processes (option)
  • The Ethernet module, relay, and analog outputs allow for optimal integration of the transmitter into individual automated systems
  • High-quality digital probes and the intelligent calibration concept
  • Self-monitoring and an early warning function ensure high system availability

  testo 6681 Industrial temperature/humidity transmitter, accuracy up to ±1.0 % RH (depends on the probe type), selectable analog signal outputs, optional display, optional Ethernet module or Profibus DP module, data output in all humidity units, optional relays, external digital interface for adjustment and parameterization, 2 analog outputs, optional 3rd analog output