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MSR-Electronic PolyXeta®2 Explosion Proof Fixed gas detector

PolyXeta®2 is a fixed gas detector that senses oxygen, toxic gases, flammable gases, and vapors in dangerous areas and provides diverse output signals.

The microprocessor-based gas sensor with 4-20mA output signal and alarm or fault relay is used to monitor the ambient air for combustible gases and vapors by means of a catalytic sensor element. For sensors without LC display, calibration is performed using the handy STL06-PGX2 calibration device or the PC software PCE06-PGX2. Sensors with LC display have an integrated calibration routine that is started from the outside with a permanent magnet without opening the housing. For sensors with LC display the background lighting changes from green to ed in the event of an alarm or error.

Features and Benefits

  • EC, CAT, IR sensors
  • Standard 4~20mA analog output, RS485 Modbus, Relay
  • SIL2-certified 
  • Case options for Zone 1 and Zone 2
  • Self-Test
  • Plug-in sensor
  • Use of oxygen sensor up to 7 years
  • Convenient maintenance
  • Certifications as ATEX, IECEx, FM, CSA, EAC, DNV, MED, etc.
Datasheet

Specifications

Category Description
Size 95(D) x 82(H) mm
Weight 1.3Kg
Material Aluminium(Housing), CrNi Stahl: 1.4404 (Sensor)
IP Rating IP66(Housing), IP64 or IP65(sensor, when using weatherproof cap)
Welding connector 3/4”NPT(Selectable as either 3 or 1)
Terminal Spring type Terminal, 0.08 ~ 2.5 mm², AWG 28–12
Display 2 x 16 characters, 3-color LEDs
Temperature -20 ~ +60℃
Humidity 20 ~ 90%RH(non-condensing)
Power supply 20~28Vdc, 130mA
Power consumption Up to 3W
Output Analog: 4～20mA(3-wire system) / Relay: AL/Fault, 30VAC/DC 1A / Digital: RS485 Modbus
Safety certification SIL2(except for IR)
Certifications ATEX : II 2G Ex db IIC T4 Gb / I M1 Ex ia I Ma -40°C≤ Tamb ≤ 60°C
IECEx : Ex db IIC T6 Gb
FM/CSA : Class I,II,III Div. 1 Group A, B, C, D, E, F, G
KCs : Ex db IIC T4(Pending)

Sensor Specifications

Gas Measuring range Sensor Resolution
CH4 0-100 %LEL IR 0.1 %LEL
CH4 0-100 %Vol IR 0.1 %Vol
C3H8 0-100 %LEL IR 0.1 %LEL
CO2 0-5 %Vol IR 0.001 %Vol
CO2 0-10 %Vol IR 0.01 %Vol
CO2 0-5000 ppm IR 1 ppm
CH4 0-100 %LEL CAT 0.1 %LEL
C3H8 0-100 %LEL CAT 0.1 %LEL
C3H8 0-30 %LEL CAT 0.01 %LEL
C3H8 0-5000 ppm CAT 1 ppm
HC 0-100 %LEL CAT 0.1 %LEL
O2(2, 3년 수명) 0-25 %Vol EC 0.01 %Vol
O2(5, 7년 수명) 0-25 %Vol EC 0.01 %Vol
CO 0-150, 250, 300, 500 ppm EC 0.1 ppm
H2S 0-50 ppm EC 0.01 ppm
H2S 0-100, 200, 500 ppm EC 0.1 ppm
H2S 0-1500 ppm EC 1 ppm
NH3 0-100, 300, 500 ppm EC 0.1 ppm
NH3 0-1000, 5000 ppm EC 1 ppm
NO2 0-100 ppm EC 0.1 ppm
HCN 0-50 ppm EC 0.01 ppm
HCN 0-100 ppm EC 0.1 ppm
HCl 0-20 ppm EC 0.01 ppm