Hanna Instruments HI 8510 Series - ORP Diagnostic Tests

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ORP DIAGNOSTIC TESTS
The HI 8512 and HI 8720 are the only ORP
controllers with built-in autodiagnostic func-
tions to enable the user to check and trouble-
shoot any malfunctions. The functions are
made via front panel keys to isolate the cause
of malfunction.
Press the "MEASURE" key be-
fore proceeding with the follow-
ing tests (HI 8720 only).
A) 0 mV Test
Press the "0 mV TEST"
key and the display should
show a value of 0 mV
±10 mV. This will verify in-
strument calibration at
point 0.
B) 500 mV Test
Press the "500 mV TEST"
key and the display should
show a value of 500 mV
±20 mV. This will verify the
slope at point 500 mV.
COARSE
SET
FINE
MEA
SURE
0 mV
TEST
500 mV
TEST
mV
0 mV
TEST
500 mV
TEST
mV