Point Calibration; Process Calibration; Values Calibration; Slope And Offset Limits - Hach POLYMETRON 8362 User Manual

Transmitter 9135 - pH measurement in pure water
pH CALIB.
2pts
TYPE :
BUF1 : 3.75 pH
BUF2 : 8.05 pH
Select
pH CALIB.
Process
TYPE :
pH CALIB.
Valeurs
TYPE :
SLOPE : 102 %
OFFSET : 00.12 pH
Select
The user calibrates the pH measurement with 2 of the
3 standard buffers from the table chosen :
−
NIST : 4.00, 6.88, 9.22
−
DIN 9 : 4.00, 7.00, 9.00
−
DIN 10 : 4.00, 7.00, 10.00
The user does not enter any value during calibration.

2 point calibration

Calibration type used when the user has no standard
buffer (4.00/6.88/9.22). The buffer value remains the
same to a constant temperature and the user enters
them only one time when he programs the calibration.

Process calibration

Note :
Warning ! This calibration is only active on the
zero shift.
The user calibrates on one point using 1 buffer or the
sample to measure. The user needs to enter the buffer
or sample value for each calibration.

Values calibration

The user has calibrated his electrodes in the
laboratory. He programs the slope and zero values
(% of 59.16 mV/pH) he has measured in the
laboratory.

Slope and offset limits

An error message is displayed if the slope is not in-
between [70 %, 120 % or offset in-between [-3 pH,
+ 3 pH].
See Chapter error messages and Troubleshooting.
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