Hach POLYMETRON 8810 ORP Manuel D'utilisation De Base page 24

System alarm
Alarm 1
Alarm 2
1. Select ALARM with the scrolling keys and press Enter.
Option
SYS.ALARM ON/OFF
WARNING/R1 YES/NO Define the alarm allocation (see table above).
ALARM 1/2 ON/OFF
ALARM 1/2 HIGH/LOW If activated, define if the trigger is a high or low measurement value.
ALARM 1/2 XXX
Measurement mode (SEQUENCE option)
Define the measurement mode.
1. Select SEQUENCE with the scrolling keys and press Enter. Use the scrolling keys to select the
required mode.
Option Description
FIX TIME A fixed interval between measurements. The interval is defined in
parameters (TIMING option)
LOOP Continuous measurement. No further input is required.
PLOT ORP Select this if a titration curve needs to be plotted. Enter the Start I and End I values (between
0 and 14) that define the 0/4mA and 20mA outputs.
Test analyzer and accessories (SERVICE option)
Check various physical options (e.g. pumps) are working correctly. The option to view the version
number of the latest installed software is also available from the list.
1. Select SERVICE with the scrolling keys and press Enter.
2. Select the option to test from the list available and set to ON to start it, check it functions
correctly, and then set back to OFF to stop it.
Chemical cleaning (CLEANING option)
This option is displayed only if the CLEANING option has been activated.
Define the parameters required for a chemical cleaning of the system.
1. Select CLEANING with the scrolling keys and press Enter.
Option Description
FREQUENCY Enter the number of measurements between each chemical cleaning.
SPRINKLER Define the duration (in seconds) for rinsing the measurement chamber.
24 English
WARNING/R1 set to NO
System and warning alarm
Alarm 1
Alarm 2
Description
Activate or deactivate the system alarm.
Activate or deactivate alarms 1 and 2.
Enter the threshold value. If the alarm is set to HIGH any measured value above
this threshold will trigger the alarm, or if the alarm is set to LOW any measured
value below this threshold will trigger the alarm.
on page 25.
WARNING/R1 set to YES
System alarm only
Warning alarm
Alarm 1 and 2
Measurement cycle