Selectable analog signal outputs and optional display (depending on configuration)
Transmitter for measuring differential pressure in the range from 100 Pa to 2 bar
A **solenoid valve** for **automatic zero point adjustment** guarantees high accuracy independent of temperature and long-term stability
An **external interface** for adjustment and analysis saves time and reduces costs for commissioning and maintenance
Optional display
testo 6321 differential pressure transmitter, accuracy **±1.2%** of the measuring range, **automatic “zero point” adjustment**, selectable measuring ranges from **100 Pa to 2000 hPa**, selectable analog signal outputs, external digital interface for adjustment and parameterization, optional display.
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.
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.
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
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.
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
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.
Totalizing function (totalizer) for calculating overall consumption
High accuracy: thanks to a defined nominal diameter (DN25), you can adjust the standard volumetric flow rate
Easy installation and use
testo 6742 dew point transmitter, measuring range down to -45°Ctd, **without display**, connection type NPT1/2, analog signal output 4…20 mA, optional signal module connector with two switching outputs.
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 (DN40), you can adjust the standard volumetric flow rate
testo 6743 dew point transmitter, measuring range down to -45°Ctd, with display, connection type G1/2, 4…20 mA analog signal output, optional signal module connector with two switching outputs.
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 DN50, you can adjust the standard volumetric flow rate
testo 6744 dew point transmitter, measuring range down to -45°Ctd, with display, connection type NPT1/2, analog signal output 4…20 mA, optional signal module connector with two switching outputs.
