ExTemp – Intrinsically Safe for hazardous areas

ExTemp – Intrinsically Safe for hazardous areas


  • Temperature range: -20°C to 1000°C
  • ATEX, IECEx and UKEX certified up to Zone 0 (gas) and Zone 20 (dust)
  • Certified for use in Japan
  • 4-20 mA output, two-wire, loop-powered
  • Optional RS-485 network adapter and USB configuration tool
  • Supplied with up to 25 m cable
  • Cable may be extended even further (subject to safety requirements) – cable runs could extend all the way back to the control room
  • Stainless steel 316 housing, ideal for offshore applications
  • Not designed or approved for fever detection

Brand : Calex


Hazardous Area Classification:

ATEX ClassificationEx II 1GD
IECEx Classification (Gas)Ex ia IIC T4 Ga
IECEx Classification (Dust)Ex ia IIIC T135°C IP65 Da
Ambient Temperature Rating-20°C ≤ Ta ≤ 70°C
Maximum DC Input VoltageUi = 28 V
Maximum Input CurrentIi = 93 mA
Maximum Input PowerPi = 650 mW
Maximum Internal CapacitanceCi = 8 nF
Maximum Internal InductanceLi = 0 mH
ATEX Certificate NumberCML 14ATEX2079
IECEx Certificate NumberIECEx CML 14.0032
JapanEx Certificate NumberCML 23JPN2141
UKCA Certificate NumberCML 21UKEX2001

General Specifications:

Temperature RangeConfigurable from -20°C to 1000°C via optional USB adapter; pre-set to a choice of ranges between these limits (see Ordering)
Maximum Temperature Span1000°C
Minimum Temperature Span100°C
Output4 to 20 mA
Optional USB configuration tool and RS-485 network interface available
Accuracy± 1°C or 1%, whichever is greater
Repeatability± 0.5°C or 0.5%, whichever is greater
Emissivity Setting Range0.20 to 1.00 (pre-set to 0.95)
Emissivity Setting MethodUser configurable via optional modules
Response Time, t90240 ms (90% response)
Spectral Range8 to 14 μm
Supply Voltage12 to 24 V DC ± 5%
Maximum Current Draw25 mA
Maximum Loop ImpedanceSee Application Guide (available separately)





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