HygroFlex-EX series

HygroFlex5-EX - HF5-EX - two-channel transmitter

The new HygroFlex5-EX series is the latest development in two-channel transmitters for the exact measurement of humidity and temperature in explosive atmospheres. This 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.

• Measurement of relative humidity and temperature, optional output of dew points
   and other calculated parameter
• Safe operation in areas with explosion risk
• Intrinsically safe probes
• Interchangeable stainless steel probes
• Robust aluminium housing

Matching probes: EX probes

More Information
Number of probe inputs 1
Accuracy at 23 ±5 °C ±0.8 %rh / ±0.1 K
Galvanic separation output signals Yes
Dimensions 160 x 100 x 61 mm
Operating range -40…60 °C / -10…60 °C (Models with display) 0…100 %rh, non-condensing
Display type Optional graphics display. Presentation configurable.
Backlight without Backlight
Trend indicator Yes, for models with display
Psychrometric calculations All psychrometric values
Analogue outputs scaleable by the user Yes
Software Update With internet and HW4 software
User information from Software HW4 (devicemanager)
Data processing via HW4 Graphics, statistics, analysis, qualification, etc.
Circuit type 2 wire
Service Interface UART (internal in device)
IP protection rating IP66
FDA/GAMP compatibility FDA 21 CFR Part 11 and GAMP compatible
Measuring range with interchangeable probe 0…100 %rh and -40…85 °C
Measurement interval 20…240 s
Probe adjustment by software Not via device menu
(only outside the explosive zone with HW4 + AC3001)
Analog output signal (standard) 4…20 mA, two-wire
Probe material Stainless steel
Enclosure material Aluminium (DIN EN 1706 EN AC-AlSi 12 (Fe))
Cable connections Connections: Ex-e terminals (0.2…2.5 mm2)
Cable gland: 16 x 1.5 (Ø cable 4.5…7 mm)
Weight 1030 g / 1140 g
Start-up time Standard cold <60 s / warm <30 s
Current consumption 2x24 mA start up / 2x20 mA operation
CE / EMC conform 2014/30/EU
Power supply 10…28 VDC
Accuracy analog output <20 μA
ATEX directives 2014/34/EU (ATEX) CSA22.2, UL 508
EX identification EX II 2(1) G Ex eb mb [ia Ga] IIC T5 Gb
EX II 2(1) D Ex tb [ia Da] IIIC T80°C Db
Identification EX North America Class I, Div 1/2, Groups ABCD T5…T4,
Class II, Div 1/2, Groups EFG T80°C…T110°C
Ex e mb [ia Ga] IIC T5...T4 Ga/Gb
Ex tb [ia Da] IIIC T80°C…T110°C Da/Db
Class I, Zone 0/1, AEx e mb [ia Ga] IIC T5…T4 Ga/Gb
Class II, Zone 20/21, AEx tb [ia Da] IIIC T80°C…T110°C Da/Db

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