Intrinsically Safe Humidity and Temperature Transmitters

Product Description

The new HygroFlex5-EX series is the latest development in two-channel transmitters for exact measurement of humidity and temperature in explosive atmospheres. This measuring device conforms to the latest international standards. The HF5-EX series consists of a robust aluminium transmitter with or without display. The attached probes are cast into a stainless-steel tube, and are certified for operation in Zone 0/20. The transmitter itself is certified for Zone 1/21. The intelligent design of the circuitry with electrical isolation permits the measuring system to be operated without an intrinsically safe power supply.

Reliable Measurements Under Extreme Conditions :

• Measurement of relative humidity and temperature, optional output of dew point and other calculated parameters
• Safe operation in areas with explosion risk
• Intrinsically safe electrical construction
• No intrinsically safe power supply required
• Interchangeable stainless-steel probes
• Robust aluminium housing

Functional display :

• Measurement values with trend indicator
• Conguration via keyboard possible

Proven housing :

• Robust, reliable aluminium housing
• Protection class IP66
• Wall or duct mount possible

Power supply :

• 1028 VDC
• No intrinsically safe power supply required

Outputs :

• The two analogue outputs can be freely selected and scaled
• 2-wire (2 x 4...20 mA)

Exchangeable probes :

• Different probes can be connected for different applications
• Simple calibration of the probes outside the explosive zone
• Explosion protection classes (gas and dust)

Transmitter:

• II 2(1) G Ex eb mb [ia Ga] IIC T5 Gb
• II 2(1) D Ex tb [ia Ga] IIIC T80C Db

Probes:

• II 1/2 G Ex ia IIC T5 Ga/Gb
• II 1/2 D Ex ia IIIC T80^oC Da/Db

Simple configuration :

• The conguration can be specied directly when ordering
• Later conguration on site is also possible, using the HW4 software

Technical Specification :

HC2-SM-EX / HC2-IM-EX / HC2-IE-EX / HC2-LDP-EX