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Hazardous Environment COe Monitor - MRU OMS 420 EX

Original price $5,899.00 - Original price $5,899.00
Original price
$5,899.00
$5,899.00 - $5,899.00
Current price $5,899.00
SKU MRU-OMS420EX

USER MANUAL *

Description

About the manufacturer

MRU is a German company making extremely well-engineered emission monitoring systems. Their products are very durable and constructed to withstand everyday use in punishing environments.  

Product Overview

The OMS 420 Ex is an in-situ oxygen and COe monitor designed for continuous combustion optimization in hazardous area zones. It is ideal for various industrial furnaces, ovens, and boilers with hazards of explosive atmospheres. Petruoleum refinery plants, petrochemical plants, gas separation, blast furnace, coke oven and other syngas plants are all excellent candidates for the OMS 420 Ex. 

Features

  • 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
  • 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

Product FAQs

I have an Optima-7 and suddenly the H2S readings are bad or very high. Do I need to replace the sensor?

Not necessarily. When the H2S sensor is exposed to high levels of H2S gas, it is recommended to run the instrument with the gas pump on with ambient air for the same amount of time the sensor was exposed to the high level of H2S. This allows for purging of the instrument before turning the instrument off. Be aware though that continued exposure to levels over 5000ppm H2S will damage the sensor.

Is it safe to expose the H2S sensor in an Optima-7 to H2S gas concentrations just below 5000ppm?

Exposure to H2S levels from 2000-5000ppm with moisture will degrade the sensor more quickly. Using filters inline reduces the moisture content of the gas stream entering the instrument.

A gas reading is much lower than expected. Is the sensor bad?

A common cause for lower than expected gas readings is leakage in the instrument. Perform a leak test by connecting the Condensate Separator Tube to the Pressure Connection 1 Port with tubing.

Perform a leak test as described in the User Manual Optima 7 Biogas. If the leak test fails, check for defective or missing o-rings in the Condensate Separator Tube.

If the user uses the Sampling Probe with sampling lines to take gas readings, place a clean Leak Proof Test Cap on the end of the probe spike. Attach the other end of the sampling line onto the Condensate Separator Tube. Perform the leak test. If the leak test fails, check for defective or missing o-rings in the Condensate Separator Tube and for cracks in the sampling line.

The Optima 7 is not displaying a temperature reading after inserting the thermocouple into the instrument.

Look closely at the prongs of the thermocouple. The prongs might be dirty. Use a sponge soaked in a 1:3 vinegar/water solution and gently wipe the prongs. Wipe dry with a lint-free cloth or allow to air-dry.

The Optima 7 will not power down after pressing the OFF key. How do I turn off the instrument?

Simultaneously, press the ESC key and the power button then release both keys. You will have to update the Date and Time setting in your instrument afterwards.

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