OMS 420 Ex - O2 and COe Monitor - MRU Instruments

Description

Features:

O2 & COe in-situ monitoring system for use in hazardous area zone 2
The O2 and COe monitor is dedicated for continuous combustion optimization at:
- Various industrial furnaces/ovens/boilers, with hazard of explosive atmosphere
- Petroleum refinery plants petrochemical plants
- Gas separation, blast furnace, coke oven, or other syngas plants

Benefits:

Applications:

Whenever hazardous area zone 2 is necessary!

Hazardous area designation of use: Zone 2 or Class 1, Div 2, Gr A/B/C/D
Special IP 65 pressurized cabinet and z-purge controller, complying to II 3G Ex pz II T3 Gc
Easy and fast, on site replaceable detector head with sensors (O2 & COe)
Integrated control unit with backlit display, operating key pad, dual galvanic isolated 4 … 20 mA output and digital output RS 485 (Modbus RTU)
Stainless steel SS316Ti flange 4″ ANSI-150Ibs with flow guidance probe tubes, from 11.81“ up to 78.81“ length
Unique hot solid electrolyte sensor for combustible COe-measurement without need for sample dilution with air as required for catalytic bead sensors (Pellistors) (Option)
Unique blow-back system for dusty flue gases (Option)
Integrated auto-calibration for accurate measurements (Option)
Dust tight and water proof enclosure, with optional ATEX heater for very low ambient air temperatures or optional ATEX Vortec cooler for high ambient temperatures

Flue gas temperature	up to 1,800°F with Inconel steel tube
Pressure	361 inH2O to 441 inH2O (900 to 1,100 mbar)
Flow Velocity	min. 1 m/sec to max. 30 m/sec

General technical data
Ex classification	Ex II 3G Ex pz II T3 Gc
Warm-up time	min. 30 min.
Flange	flange 4″ ANSI-150 lbs, stainless steel 1.316Ti
Probe tube	11.81″ to 78.81″ (300 mm to 2,000 mm), Inconel steel
Flange temperature	min. 158 ° F … max. 302 °F (+70 … max. +150 °C) (condensation moisture must be avoided)
Response time/T90	< 10 sec.
Interfaces	Dual, analog output 4 … 20 mA, isolated, max. load 500R, RS 485
Power supply	100…240 Vac / 47…63 Hz / 100 W or 300 W with cabinet heater
Electronics of the transmitter	with local microprocessor, display and 4 push-buttons
Calibration	manual or automatic (user free settable) 1 point (offset) or 2 points (offset and span)
Compressed air	87 … 116 psi (6…8 bar), free of dust, oil and water (DP -4°F (-20°C) or less)
Ambient conditions	41°F … 113°F (+5 °C … +45 °C) (149°F (+65 °C) with ATEX Vortec cooler) -49°F … 113°F (-45°C … +45 °C) with cabinet heater
Dimensions	25.58″ x 19.68″ x 13.77″ (650 x 500 x 350 mm) (H x W x D)
Protection class	IP65
Weight	55lbs. (25 kg)

TEST