** Caution: Integral 4 - 20mA converters are internally powered and do not require external power.
DO NOT supply any voltage across these terminals as the 4 - 20mA output will be damaged. It is
also important to assure proper grounding of the external recording device such as a PLC, DCS prior
to connecting the 4 - 20mA.
The OMD-625 allows the user to simulate an analog output to calibrate a PLC or DCS system. To ac-
complish this, the OMD-625 will self generate a 4mA, 8mA, 12mA, 16mA or 20mA signal output.
Important note, this output simulation can be done with the oxygen sensor installed and purging on
gas.
To simulate the output, the user will want to enter the MENU and select SYSTEM. From here, the user
can select OUTPUT SIM which will then give them the option of what mA signal they wish to use.
Move the cursor UP or DOWN to the mA desired and the analog output of the unit will adjust. For
example, if you move the cursor to the 12mA, the output will change to 12mA. Once calibration of the
PLC or DCS system is complete, hit ENTER or ESC to return to the HOME screen.
3.5
Analog Output Simulation
Operation
OMD-625 Oxygen Analyzer
Designed, Tested and Assembled in California, USA
4045 E. Guasti Rd. #203 Ontario, CA 91761 USA : 1-949-398-2879 : [email protected] : www.sso2.com
