Thermo Orion 410Aplus, Instruction Manual

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C. Orion 420Aplus and 710Aplus Check-Out Procedure
1. Perform the self-test.
2. After completing the self-test the meter will be in MEASURE mode.
The legend MEASURE will be displayed.
a. Press mode until the pH mode indicator is displayed. Main display
should read a steady 7.00 ± 0.02.
NOTE : If this is the first time this procedure has been
performed the reading should be 7.00 ± 0.02.
b. If not, press 2nd cal . “P1” will appear. When “Ready” appears,
press yes .
c. Press measure . The main display should read 100.0 with the
legend SLP in the lower display. If so, press yes .
d. If not, scroll until the display reads 100.0 and then press yes .
The meter advances to MEASURE and the display should
now read steady 7.00.
NOTE : To change a value, press or . The first digit
will flash, continue scrolling until the first digit equals the
correct value, then press
yes. The second digit will flash.
Scroll to the correct value then press yes . When all digits
have been changed, press yes to enter the new value.
3. Press mode to enter millivolt mode. Display should read 0.0 ± 0.2. If
not, press 2nd cal then press yes to enter the value 0.0. The meter will
return to MEASURE mode.
4. Press mode to enter REL mV mode. Display should read 0.0 ± 0.2. If
not, press 2nd cal then press yes to enter the value 0.0. The meter will
return to MEASURE mode.
Orion Benchtop pH/ISE Meter Instruction Manual
Set Up, Self-Test and Check-Out
6
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