ETS-Lindgren OMS, User Manual

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Operation www.ets-lindgren.com
Main Operation Mode
Step Display
To select the main menu from any
submenu, push the joystick to the
left until the main menu displays.
Oxygen
20.9%
Internal Sample Flow Rate
The OMS has an internal sample pump flow rate that is programmed at the
factory and cannot be changed in the field. A flow sensor on the relay board
continually monitors flow rate and when a loss of flow is detected, a signal is sent
to the fault relay and the front mounted LED will activate. Sample flow to the
monitor is continuously monitored and controlled by the flow control
microprocessor.
If the sample line is blocked, the fault indicator will illuminate and the
pump will accelerate and attempt to re-establish the proper flow rate. If
the line is cleared, the pump will speed and slow down and the fault
light will turn off when the flow rate is back to factory setting.
For the recommended filter maintenance, see page 14.
Signal Outputs
The OMS outputs a continuous 4–20 mA analog signal proportional to the
measured concentration of oxygen; 4 mA represents 0% oxygen, and 20 mA
represents 25% oxygen, which is the full range. In the event of a system fault, a
specific factory-defined code will be displayed on the display, indicating the exact
nature of the system fault.