testo 6381 differential pressure transmitter with calculation of flow velocity and optionally with humidity/temperature, accuracy &plusmn;0.5% of measuring range final value, automatic zero-point adjustment, selectable measuring range between 10 to 1000hPa, selectable signal outputs, optional display, output of all relevant pressure, flow and humidity paramters 
 
**NOTE: Please contact Testo to ensure proper configuration when ordering the testo 6381 Transmitter**

testo 6383 differential pressure transmitter in cleanroom-conform panel design, optionally with humidity/temperature, accuracy &plusmn;0.3% of measuring range final value, automatic zero-point adjustment, selectable measuring range between 10 to 10hPa, selectable signal outputs, optional display, output of all relevant pressure and humidity parameters 
 
**NOTE: Please contact Testo to ensure proper configuration when ordering the testo 6383 Transmitter**

testo 6651 humidity/temperature transmitter for critical climate, accuracy up to &plusmn;1.7 %RH (depends on the probe), selectable signal outputs, optional display, optional ethernet module, optional relay, 2 analog outputs 
 
**NOTE: Please contact Testo to ensure proper configuration when ordering the testo 6651 Transmitter**

testo 6681 industrial humidity/temperature transmitter, accuracy up to &plusmn;1.0 %RH (depends on the probe), selectable signal outputs, optional display, optional ethernet or profibus module, output of all relevant humidity parameters, optional relay, optional 3rd analog output 
 
**NOTE: Please contact Testo to ensure proper configuration when ordering the testo 6681 Transmitter**

The testo 6605 temperature and humidity probe is equipped with a high-precision, long-term stable humidity sensor from Testo and delivers precise measurement results.

The testo 6612 temperature and humidity probe is designed for measurements in air conditioning ducts.

The testo 6613 temperature and humidity probe is designed for measurements in processes that are difficult to access.

The testo 6615 temperature and humidity probe is designed for measurements in trace humidity applications. The automatic self-adjustment procedure corrects the measurement uncertainties that traditionally occur when measuring humidity in the lowest humidity ranges - so you benefit from extremely accurate measurement results.

The testo 6617 temperature and humidity probe is designed for measurements in environments with aggressive media. With the built-in self-monitoring function, you can prevent faulty measurements or measurement interruptions – because it detects signs of corrosion at an early stage, thus the probe can be replaced in good time.

The pressure-tight screw connection (stainless steel) with G1/2" thread and PTFE ring is ideal for mounting your temperature and humidity probe in the process. The PTFE clamping ring enables quick mounting and holds the probe securely in place, and can be removed without leaving any residue after use.

Pressure-tight screw connection with PTFE ring

Pressure-tight screw connection with PTFE ring