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Sensor Cartridge SC2 for combustible gases

Exchangeable sensor including digital value processing, temperature compensation and self control for the continuous monitoring of the ambient air.

Gas detection system

Gas detection sensors

Product Description

The sensor cartridge SC2 includes a Pellistor sensor element and an amplifier as well as a μController for measured values processing. All important data and measured values of the sensor element are stored fail-safe in the μController and transmitted digitally via the local bus to the sensor board SB2 or MSB2. The calibration management is also integrated in the μController of the sensor cartridge.
Calibration is done either by simply replacing the sensor cartridge or by using the comfortable, integrated calibration routine directly at the system.
APPLICATION
The PolyGard®2 Sensor Cartridge is used for the detection of combustible gases in non-Ex zones.

  • Power supply: 5 V DC from SB/MSB2, reverse polarity protected
  • Power consumption: 200 mA, max. (1.0 VA)
  • Serial interface local bus: 1-wire / 19200 Baud
  • Gas type: Combustible gases, see Ordering Information
  • Sensor element:Pellistor (catalytic bead sensor)
  • Measuring range 0 – 100 % LEL
  • Accuracy:± 1 % LEL (CH4)
  • Resolution: 0.2% (CH4)
  • Repeatability: < 1 % sig. (CH4)
  • Response time t90: 10 sec.
  • Zero point variation: 0.5 % (CH4)
  • Long-term zero-point drift < 0.3 % LEL / month (CH4)
  • Long-term sensitivity drift: < 1 % LEL / month (CH4)
  • Temperature range: -20 °C to +50 °C (-4 °F to +122 °F)
  • Humidity range: 5 - 95 % RH not condensing
  • Pressure range: Atmospheric ± 20 %
  • Sensor life time: > 36 months / normal ambient conditions Calibration interval1 6 months
  • Storage temperature range: +5 °C to +30 °C (+41 °F to +86 °F)
  • Storage time: 6 months
  • Poisoning: The sensitivity of Pellistor sensors can be influenced by substances containing silicon compounds and even poisoned and destroyed by them.
  • Housing M25: Polycarbonate
  • Combustion: UL 94 V2
  • Housing colour: RAL 7032 (light grey)
  • Dimensions: M25 housing (D x H) 24 x 22 mm (0.94 x 0.87 in.)
  • Weight: ca. 30 g (0.07 lb) Protection class IP 65
  • Mounting:Screw mounting Connection type 3-pin connector
  • Cable length: 110 mm (4.33 in.)
  • Directives:
  • EMC directives 2014/30/EU
  • CE
  • Conformity to:
  • EN 50271
  • EN 61010-1:2010
  • ANSI/UL 61010-1
  • CAN/CSA-C22.2 No. 61010-1
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