Thermo Scientific Orion 320, User Manual

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7-3 Thermo Scientific Orion 320, 350 and 370 PerpHecT
®
LogR
®
Meter User Guide
The meter has a self-test circuit, which verifies proper electronic operation .
Operator assistance codes are used to inform the user of an out-of-range
value or meter problem . During the self-test a special series of codes, E-02
through E-07, indicate problems with the meter hardware . Should one
of these codes appear, contact the Technical Support . Within the United
States call 1 .800 .225 .1480 and outside the United States call 978 .232 .6000
or fax 978 .232 .6031 . In Europe, the Middle East and Africa, contact your
local authorized dealer . For the most current contact information, visit
www .thermo .com/contactwater .
Code Function
E-02 RAM Check Error
E-03 Input Channel Error – Ensure that the BNC shorting cap is securely
attached to the meter and repeat the self-test.
E-04 Ground Reference Error
E-05 Temperature Reference Error
E-06 Internal Reference Error
E-07 Internal Keypad Error – Press each key when prompted during the
self-test.
1 . After the self-test is complete, the meter will return to the measurement
mode . Keep all of the electrodes disconnected from the meter and keep
the BNC shorting cap attached to the BNC input on the meter . Press
the mode key until the pH mode indicator is displayed . The main
display should read a steady 7 .00 ± 0 .02 .
a . If the display does not read a steady 7 .00 ± 0 .02, press the cal key .
The display will show CAL for two seconds .
b . Press the scroll (
▲ ▼
) keys until 7 is displayed and then press the
yes
key to accept the calibration range . When the ready icon is
shown, press the yes key .
c . SLP will be displayed while 100 .0 (or the previous calibration slope
value) is displayed . Set this value to 100 .0 using the scroll (
▲ ▼
)
keys . Press the yes key to save the slope value .
d . The meter should advance to the pH measurement mode and the
display should read a steady 7 .00 ± 0 .02 .
2 . In the measurement mode, press the mode key until the meter displays
the mV icon . The display should read 0 ± 1 mV . If the meter does not
read 0 ± 1 mV with the BNC shorting cap attached to the BNC input,
contact Technical Support .
Meter Self-Test Operator
Assistance Codes
320 Meter Check-Out