OTIS GEN II OI-6000, Operation Manual

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PRODUCT SETTINGS AND CONFIGURATION
OI-6000-X-X-X-X-O OPS_GUIDE_REV 3.1 35
3.12 4-20 mA OFFSET SETTINGS
Setting the 4-20 mA offset allows the end-user to calibrate the sensor’s analog output. Upon installation of the
device, if the detected gas reading on OI-6000 does not correspond to the reading on the Otis Monitor, or other
monitoring device, the zero offset (4 mA) and the full-scale offset (20 mA) can be adjusted on the unit.
Overtime, as electronic components suffer from normal wear and tear, the circuits will tend to drift. This drift can
cause variances in the amount of current output by the sensor, or in the current measurement by the monitor. If at
any time the reading on the OI-6000 no longer matches the reading on the monitoring device, the 4-20 mA offset will
need to be recalibrated.
The factory default settings on the OI-6000 for the 4-20 mA offset are 4.00 mA for the zero offset and 20.00 mA for
the full-scale offset.
1. Press the ADD button to select “Yes” to set the 4-20 mA offset and to advance to the zero offset setting screen.
If you do not wish to set the 4-20 mA offset, press the SUB button to select “No” to advance to the display screen
contrast setting screen.
3.12.1 ZERO OFFSET SETTING
If “Yes” is selected to set the 4-20 mA offset:
1. Use the ADD and SUB buttons to increase and decrease the zero offset on the unit, respectively,
until the Otis Monitor reads 0 %/PPM, depending on the gas type being detected.
2.
Press the MENU button to save the desired setting and to advance to the full-scale offset setting
screen.