VOC Pro Transmitter • 37
The factory default settings on the VOC Pro for the 4-20 mA offset are 4.00 mA for the zero
offset and 20.00 mA for the full-scale offset.
1. If necessary, enter the Product Settings and Configuration menu by pressing and holding
the MENU button for 6 seconds.
2. Press and release the MENU button until the 4-20 mA Offset screen appears.
3. Press and release the ADD button to set the 4-20 mA offset and advance to the zero offset
setting screen. If you do not wish to set the 4-20 mA offset, press and release the SUB or
MENU button to advance to the display screen contrast setting screen.
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 controller 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.
Full-Scale Offset Setting
NOTE:
Adjusting the full-scale offset will initiate alarm conditions. Disable the alarms or
make sure all personnel are aware that any alarms are false.
1. Use the ADD and SUB buttons to increase and decrease the full-scale offset, respectively,
until the controller reads the full scale value for that channel.
2. Press the MENU button to save the desired setting and to advance to the display screen
contrast setting screen.