Moisture transmitter series testo 6681 front

testo 6681 – moisture transmitter series for sensitive environments

Name: testo 6681 - moisture transmitter series for sensitive environments
SKU: 0555 6681
Price: 12950 SEK
Availability: InStock

For monitoring and controlling sensitive environments in process engineering contexts

-40...180°C
0...100%RH
Interchangeable sensors

Delivery time: 5-10 working days

SKU: 0555 6681 Categories: Industry, Measuring instruments, Moisture meters, Stationary measuring instruments, Transmitters for moisture

Description
Technical data
Probes
Accessories
Downloads
Ask us

testo 6681 - Moisture transmitter series for sensitive & demanding environments

The testo 6681 is positioned in the upper performance range. It is designed for the monitoring and control of sensitive environments in process engineering and for the control of compressed air systems.

The main benefits

Testo's highly accurate and long-term stable moisture sensor
Robust precision transmitter
-40...180°C
0...100%RH
Interchangeable sensors
Reports with early warning signs
Variable adjustment possibilities
Integrated Mollier diagram
Integrated relays (optional)
A third analog output (optional)
Display (optional)

This series of transmitters has interchangeable sensors, which are adapted to the application. Through the adjustment and setting software P2A you have total control over the instrument, you can scale/calibrate/adjust the output signal on all outputs including the analog output. In addition, the transmitter can be fed via USB. Adjustment or analysis can therefore be carried out without the need to run any other cables e.g. on the table or in the service workshop or areas without the possibility of power supply.

Using the optional display and the four buttons on the front, you can easily adjust, commission and analyze the instrument on site without a PC if you do not have access to one. Thanks to the new digital plug-in sensors, it is very easy to change sensors without tools. There is also no need to readjust the transmitter as the sensor is calibrated and adjusted before delivery. The Testo 6681 has an integrated Mollier chart which allows for a wide variety of selectable units.

Contact us for prices and more information

Enclosure Material	Metal
Size	122 x 162 x 77 mm
Measurement range	Humidity: 0...100 %RH Temperature: -40...+180°C
Protection class	IP65
Working temperature of instrument housing	-40 to +70 °C Display: 0 to +50 °C
Storage temp	-40...+80°C
Display resolution	0.1%RH / 0.1°C
Sensor connection	Digital "plug-in" connection
Screw connection	M 16 x 1.5 (2x) with inner diameter 4-8 mm M 20 x 1.5 (2x) with inner diameter 6-12 mm
Display	2-line LCD with clear text (display is optional) and indication of relay status
Analog output:
Accuracy: Current	4...20 mA ±0.03 mA (2-wire) 0...20 mA ±0.03 mA (4-wire) 4...20 mA ±0.03 mA (4-wire) for heated sensor
Accuracy: Voltage	0 to1 V ±1.5 mV(4-wire) 0 to5 V ±7.5 mV (4-wire) 0 to10 V ±15 mV(4-wire)
Resolution	12 bits
Max load	2 thread 12 VDC: 100 Ohms 24 VDC: 500 Ohm 30 VDC: 625 Ohms 4-wire 500 Ohm
Galvanic isolation	Galvanic isolation on the outputs (2-wire and 4-wire), isolation between the supply and the outputs (4-wire)
Analog output/Temp
EMC	2004/108/EC
Units	Temperature in C° / F° Relative humidity %F / %RH Dew point in °Ctd /°Ftd Pressure dew point °Ctpd Absolute humidity in g/m3 Water content in g/kg Enthalpy in kJ/kg Psychometer temperature in °Ctw Partial pressure in water vapor hPa/H2O Water content in ppm vol/%Vol Mix dew point in H2o2/in °Ctm
Relay output	4 pcs up to 256 VAC /3A NC/C/NO (optional)
Digital output	Mini Din for Testo P2A software and Testo 400/650 (optional)
Power supply	2-wire: 24VDC ±10% Galvanic isolation on the outputs (2-wire and 4-wire), isolation between the supply and the outputs (4-wire) 2004/108/EC 4-wire: 20...30VAC/DC, 200mA max current consumption
Measuring medium	Air, Nitrogen, more on request
Weight	1.5kg (without sensor)