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Intrinsically Safe Humidity and Temperature Transmitters

Intrinsically Safe Humidity and Temperature Transmitters
Intrinsically Safe Humidity and Temperature Transmitters
Product Code : ATEX
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
  • Configuration via keyboard possible

Proven housing :

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

Power supply :

  • 10…28 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 T80°C Db

Probes:

  • II 1/2 G Ex ia IIC T5 Ga/Gb
  • II 1/2 D Ex ia IIIC T80oC Da/Db

Simple configuration :

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

Technical Specification :

General

HF520-EX

Parameters

Humidity and temperature

Calculated Parameters

All psychrometric parameters

Housing material / Protection

Aluminium (DIN EN 1706 EN AC-AlSi 12 (Fe)) / IP66

Weight

Wall-mounted version: 1030 g
Duct mounted version: 1140 g

Start-up time

Standard cold <60 s / warm <30 s

Measurement interval

20…240 s

Display

Optional, LCD without backlight

Electrical connections

Connections: Ex-e terminals (0.2…2.5 mm2)
Cable gland: 16 x 1.5 (Ø cable 4.5…7 mm)

Power supply

10…28 VDC

Current Consumption

2x24 mA startup / 2x20 mA operation

Application temperature
Housing / electronics

-40…60 oC without display
-10…60 oC with display

Service interface

UART internal service interface
(only to be used outside the explosive zone)

CE / EMC compatibility

EMC Directive 2004/108/EC

ATEX directives

EU94/9/EC (ATEX)

EX identification

II 2(1) G Ex eb mb [ia Ga] IIC T5 Gb
II 2(1) D Ex tb [ia Ga] IIIC T80oC Db

Analogue output

Number

2

Current

4…20 mA, two-wire

Galvanic isolation

Yes

Maximum load

500 Ohms

Accuracy at 23oC

<20 uA

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

General

Parameters

Humidity and temperature

Housing material / Protection

Stainless steel / IP66

Cable lengths

2/5/10 Metres

EX identification

II 1/2 G Ex ia IIC T5 Ga/Gb
II 1/2 D Ex ia IIIC T80oC Da/Db

Humidity measurement

Sensor

HC2-SM/IM/IE-EX: ROTRONIC HYGROMER® IN-1
HC2-LDP-EX: ROTRONIC HYGROMER
® LDP-1

Adjustment

Not via device menu
(only outside the explosive zone with HW4 + AC3001)

Measurement range

0…100 %RH

Accuracy at 23 oC

0.8 %RH

Temperature measurement

Sensor

HC2-SM/IM/IE-EX: Pt100 Class A
HC2-LDP-EX: Pt1000 1/3 Class B

Measurement range

-40…60 oC

Accuracy at 23 oC

0.1 K

Accessories

Filters

Steel sinter filter, SP-FN15

Cable gland

AC1301-MEX for conduit mounting and cable probes (IM)

Contact Us

401 & G-414-416 A Wing, Kailash Indl. Complex, Near Dynalog, Behind Godrej Colony, Park Site, Vikhroli (West), Mumbai, Maharashtra, 400079, India
Phone :+917259463319