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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
HHOOLLDD
key twice.
Step 2: Using a ORP standard, determine the ORP
of the solution.
Step 3: Ensure that the sensor’s measurement por-
tion 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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