OPERATING MANUAL OXYGEN MONITORING SYSTEM
OMS 420
26
9.6.8
Set gas humidity
This function allows setting the value of gas humidity (if known) and selection of either wet oxygen measurement or dry oxygen
calculation.
NEXT
move cursor to values which can be changed
EDIT
change value by means of UP/DOWN
OK
save
values
BACK
return to main menu
Change value of gas humidity (XX.X %) if this is known.
Using the formula:
Humidity H % = (1 - O
2
wet
/
O
2
dry) x 100 the dry oxygen is calculated and displayed.
Default value for humidity = disabled
In the main menu the readings are w
Æ
wet oxygen measurement and d
Æ
dry oxygen calculation
9.6.9
Solenoid test
With the menu option "Solenoid test" allows to test each individual solenoid valve (if installed)
A manual switch ON or OFF of all 3 individual solenoid valves is possible.
By means of the key F1 the solenoid valve SV1 is switched ON or OFF, key F2 the solenoid valve SV2 is switched ON or OFF and
with the key F3 the single solenoid valve SV3 is switched ON or OFF.
The display shows the current O2 and/or CO value(s).
Warning: All valves can be switched at the same time. It does not take place monitoring on a meaningful position of the single
solenoid valves. This operation is only for authorized technical personal!
9.6.10
OMS420 settings
This function allows change of display contrast and set of transmitter address for multiple transmitter connection on the same
RS485 data bus.
to get back to main settings menu
PREV or NEXT
move cursor to values which can be changed
EDIT
change value by means of UP/DOWN and POS
OK
save
values
BACK
return to main menu
LCD – Contrast
0-20
(10 for default)
Device-ID (Modbus)
Slave address (RS 485-Modbus RTU)
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