Model OUM980 with OUSAF21 Inline Sensor
Operation
16
4.2.2
Operation Legend
In this manual, the following operation legend will be used when describing operation procedure.
Enter/Acknowledge
key
Escape/Menu
key
Left or Right key
Up or Down key
Figure 4.2: Operation Legend for Operation Instruction
4.3
Local Operation
4.3.1
Measuring Mode
The analyzer normally operates in measuring mode. Here, the relays and alarm LED are triggered by the analyzer according to
process status. The analyzer will take configurable digital input to trigger certain function like BaseLine Zero
iii
, Optical Zero
iv
etc...
iii
BaseLine Zero when enabled offsets the PV to zero. This often used to subtract background absorbance prior to initiating a process.
iv
Optical Zero is established during calibration and the set with a non-absorbing liquid in the flow cell, i.e. de-ionized water.
During the measuring mode, the LCD screen will display as figure 4.3. The process value, unit and analyzer label will be displayed
permanently. BaseLine, Alarm and Lamp Status will be display when conditions are met.
Figure 4.3: LCD display on measuring mode
