Orion Benchtop pH/ISE Meter Instruction Manual
Overview of Meter Functions 520Aplus,525Aplus,720Aplus and 920Aplus
110
Alarm
The Orion 520Aplus, 525Aplus, 720Aplus, and 920Aplus have an alarm
function. Separate alarms can be set for each mode and for channels 1 and 2
(on the 525Aplus, 720Aplus and 920Aplus). The alarm limits can be set at
the limits of each measuring range, -2.000 to +19.999 pH, -1600.0 to
+1600.0 mV, -1999.9 to +1999.9 relative mV, and 0.0 to 19900 for
concentration (720Aplus and 920Aplus only).Press 2nd then alarm to
access the set alarm function, then follow the prompts.
Prompt Keypress/Action
Press 2nd then alarm.
1. 1-PH LIMIT HI The current high alarm limit for
MEASUREMENT the mode and channel is displayed.
Change as desired then press yes.
2. 1-PH LIMIT LO The current low alarm limit for the
MEASUREMENT mode is displayed. Change as
desired, then press yes. Meter then
returns to MEASURE mode.
Repeat sequence for each channel. Select the other channel by pressing
2nd, then channel, then set alarms.
NOTE: The prompts above are for the
Orion 920Aplus.
Key 0 Standby
Press standby (0) to place meter into standby mode. When in standby
mode, the display of the meter is illuminated at half intensity. This feature
prolongs display life. The prompt is STANDBY: ANY KEY. Press any key
to restart meter operation. See Autoshutoff section to take advantage of
another meter saving feature.
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