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The OMD-675 is designed to measure trace oxygen in the sub 1 ppm region. 

The unit combines an advanced set of electronic features with our industry leading precision electrochemical oxygen sensor technology. 

The result is a highly reliable and cost effective design with an easy-to-use user interface. 

The analyzer comes with a 0 - 1 PPM full scale low range with a resolution of 0.001 ppm. 

The analyzer can also be configured for 0 - 1 ppm, 0 - 10ppm, 0 - 100ppm, 0 - 1000ppm and 0 - 25% in autorange or manual-range mode. 

The analyzer offers the user 2 different digital communication options, both of which are bi-directional. 

These come in the form of MODBUS RS485 ASCII or RS232. Alarm functionality comes in the way of 2 fully adjustable form C non-latching relay contacts. 

These can be configured as NO or NC and can be set as HIGH or LOW with optional delay mode. 

A power failure alarm is also standard and comes as a form C non-latching relay contact.
Features
  • 0 - 1 PPM Low Range; 0 - 25% High Range
  • Resolution of 0.001 Parts-Per-Million Oxygen
  • Integral Sample System w/ Bypass Valve
  • Bi-Directional Communication Link
  • Extensive Electronic Features & Outputs
  • 19” Rack Mount Configuration
  • Electrochemical Sensor Technology

Specifications

Accuracy

  • < ± 1 % of Full Scale Range

Alarms

  • Adjustable Relay Contacts
  • Power Fail Relay Contact

Analysis Range

  • 0-1/10/100/1000 ppm/25 %

Calibration

  • Periodically

Communication

  • Bi-Directional RS-232
  • Modbus RS-485 ASCII

Dimensions

  • 19.0 x 5.125 x 7.75 inch

Display

  • Large with Backlight

Enclosure

  • Brushed Stainless Steel

Flow Sensitivity

  • 0.5 - 5 SCFH

Gas Connections

  • 1/8” Compression Tube

Output (Analog)

  • 0-1 Vdc, 0-10 Vdc Isolated 4-20 mA

Power

  • 100-240 Vac

Pressure

  • Inlet, 0 - 50 psig

Range ID

  • 4-20 mA analog output
  • 0-1 Vdc analog output

Response Time

  • T90 in 10 seconds

Sample System

  • Flow Control, 4-Way sample / Bypass Valve, Flow Indicator

Sensor

  • TO₂-133T Trace O₂ Sensor

Sensor Life

  • 20 - 25 months

Temperature

  • 0° to 50° C

Temperature Compensation

  • Digital

Warranty

  • 12 months Analyzer & Sensor

Weight

  • 13.0 lbs

  • Air Liquefaction and Separation 
  • Pure, Gaseous Hydrocarbon Stream Monitoring 
  • Gas Purity Certification 
  • Process Monitoring of Gaseous Monomers 
  • Semiconductor Manufacturing 
  • Protective Atmosphere Blanketing of Feedstock

Documentation

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