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MODEL 1054B pH/ORP
SECTION 5.0
START-UP AND CALIBRATION
5.8. ORP STANDARDIZATION (1054B ORP only).
For maximum accuracy, the sensor should be stan-
dardized in the ORP standard process or process grab
sample.
Step 1:
Ensure that the Model 1054B is in hold (Hold
flag showing). If not, Press the
HOLD
key twice.
Step 2:
Using a ORP standard, determine the ORP of
the solution.
Step 3:
Ensure that the sensor’s measurement portion
is in the process or grab sample.
Step 4:
Allow the reading to stabilize.
Step 5:
Press the
PV
or
CAL
key once, then Press the
SELECT
key.
Std
will show followed by the Numeric
Display with digit flashing.
Step 6: SCROLL
(
é
) and
SHIFT
(
ç
) to display the
proper ORP value then
ENTER
it into memory.
Step 7:
Press the
HOLD
key twice to remove the
Model 1054B from hold. The 1054B ORP is now ready
for operation.
5.9. SENSOR MAINTENANCE.
Before preforming
maintenance or repair of the sensor, the Model 1054B
should be placed in hold. This will place the current
output and relays in the state set in the default setup.
Press the
HOLD
key twice. The hold flag will show to
indicate the hold condition. Always calibrate (Section
5.5) after cleaning or repair of the pH sensor.
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