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OMS 420-HT


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

  • OMS420HT model for high temperature
  • with ZrO2 sensor and remote transmitter
  • probe with sample aspiration using an ejector (clean, oil and water free compressed air 6-8bar is required)
  • with automatic back-purge using solenoid valve controlled by transmitter electronics
  • with 10m special cable between probe and transmitter
  • including universal power supply 100…240Vac/24Vdc,
Measuring ranges
COe – Combustibles 0 … 1,000 ppm COe (combustibles gas)
O2 – Oxygen 0.1 … 25 % (user setable analog output range)
Fluegas temperature up to 2,000°F with Inconel steel tube
up to 2,300°F with Kanthal steel tube
up to 3,000°F with Ceramic tube
Dimensions and other data
Data transmission analog 4-20mA, galvanic isolation
digital RS485, galvanic isolation
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
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
Download File type File size
OMS 420 PDF 666 KB
OMS 420 US Selection Chart PDF 231 KB Download
OMS 420 Questionnaire US DOC 100 KB Download