OMS 420-RT


Remote transmitter probe
In-Situ real time analysis of Oxygen (O2) and combustibles (COe).

  • OMS420-RT model available with and without back purge
  • Without back purge – to monitor clean combustions only
  • With back purge – to monitor dusty combustions (flying ash type of dust)
  • with ZrO2 sensor and 10m special cable between probe and transmitter
  • with 4-20mA analog output and RS485 digital output
  • including universal power supply 100…240Vac/24Vdc/100W
Measuring ranges
COe – Combustibles 0 … 1,000 ppm COe (combustibles gas)
O2 – Oxygen 0.1 … 25 % (user setable analog output range)
Flue gas temperature up to 1,200°F with stainless steel tubeup to1,800°F with Inconel steel tube
Dimensions and other data
Transmitter with local microprocessor, display and 4 push-buttons, 2 channel analog output 4-20mA and RS485 Modbus RTU, all galvanic isolated
Flange 4″ ANSI 150lbs, Ø 9.06″ (230 mm), probe tube: Ø 2.36″ (60 mm), max. 157″ (4m) length
DN80 PN16, Ø 8.5″ (216 mm) / probe tube: Ø 2.36″ (60 mm), max. 78″ (2m) length
DN65 PN6, Ø 6.5″ (165 mm), probe tube: Ø 2.36″ (60 mm), max. 78″ (2m) length
Mounting flange temperature between +158°F (+70°C) and +300°F (+150°C)
Response time < 10 sec
Power supply 100…240Vac / 100W
Protection class IP65

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