System Startup
43
Note: If a dry verification is performed directly after a calibration, the measured value is
assigned as the expected value for future verifications (when using the dry verification
device with the same serial number). As long as the verification exists within the verification
history, the expected value will be retained. Otherwise, the expected value will be the
nominal value associated with the dry verification device.
5.4 Instrument Verification
Instrument verification is intended as a simple check to ensure turbidimeter
functionality between calibrations. A verification is initially performed directly after
a calibration and subsequent independent verifications are referenced to the initial
verification. The pass/fail criteria is set and subsequent verifications are deemed
good or bad, when compared to the initial verification. All verifications are based
on the current calibration and must be repeated when the instrument is
recalibrated or when the pass/fail criteria is not met.
3
—CALIBRATE
4
STABLCAL CAL
5
OUTPUT MODE
Select ACTIVE, HOLD, or TRANSFER
6a
Drain/clean/rinse the turbidimeter body or cal cylinder.
POUR 20 NTU STD INTO CYL/BODY. REPLACE HEAD
b
Measured reading and reading based on 1.0 gain displayed
c
GOOD CAL!
GAIN: X.XX
ENTER TO CONT
(to store)
d
Verify CAL? (see Note below)
to verify/
exit no verify
e
Select VERIFICATION type (begin at step 7 in section 5.4.1 on page 44 or section 5.4.2
on page 45) or enter initials to complete calibration.}
7
— RETURN SENSOR TO MEASURE MODE
8
Main Menu or Main Measurement Screen —
Step Select Menu Level/Instructions Confirm
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