The OMD-625 oxygen analyzer allows the user to field select 5 available ranges - custom ranges are
available for the user to configure in the field. These ranges can be selected in manual mode mean
-
ing they are locked into that range by the user - which locks in the analog output, or they can be set
to auto-range so the analyzer will adjust itself as the readings change. Most applications will manu
-
ally select a range so the output is locked and can be read by a PLC or DCS system.
One feature to highlight when using the Manual-Range mode, while selecting the Manual Range, this
is locking the 4 - 20mA output to a single range. The display will continue to operate in auto-range
mode giving the user the full spectrum of oxygen analysis. Other manufactures lock the display as
well, the problem is if you over-range and the display is locked, you have no idea what your O2 value
is. With the OMD-625, it answers this issue with a display that auto-ranges and the ability to manu
-
ally lock the analog outputs.
To select Auto-Range or Manual-Range Mode, From the HOME screen, press the MENU key and the
display will indicate:
Use the UP / DOWN keys to move the cursor to allow the user
select AUTO-RANGE which will all the unit to cycle through all
five ranges or MANUAL RANGE which will allow the user to
select a key range.
Decide which option will work best for your application.
Move the cursor button over the selection and press the
ENTER key. If you have selected the AUTO RANGE option,
it will blink for a second indicating this was selected. If you
selected the MANUAL RANGE option, the following screen
will be brought up:
Standard Ranges: 0 - 10ppm, 0 - 100ppm, 0 - 1000ppm, 0 - 10000ppm
and 0 - 25%
Optional Percent Ranges: 0 - 1%, 0 - 5%, 0 - 10%, 0 - 25%, 0 - 100%
User configurable range is the *6th Range* shown and is set as
default to 0 - 950 PPM. To change the value, proceed to section
3.3 “Custom Range Option” for step-by-step instructions.
Use the UP / DOWN keys and bring the cursor to the range to be selected and press the ENTER key.
The selected range will now be shown on the HOME page and RANGE LOCKED text will be highlight
-
ed above it.
3.2
Manual Range Output Selection
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
MANUAL RANGE
0 - 25%
0 - 10000 PPM
0 - 1000 PPM
0 - 100 PPM
0 - 10 PPM
0 - 950 PPM
MAIN MENU
AUTO RANGE
MANUAL RANGE
SPAN CAL
ZERO CAL
ALARM 1
ALARM 2
SYSTEM
