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19
pH
Measurement
cal
CAL
CALIMATIC
Calibration method, the number of calibration points and
the buffer set have been selected in the configuration
menu.
CAL
1
/2/3
PRESS CAL
Immerse the sensor in the
1st
/2nd/3rd buffer solution.
It does not matter which buffer solution is taken first.
cal
pH, mV value,
temperature
Depending on the number of calibration points, the proce‑
dure described above for CAL
1
/2/3 is repeated.
mV value blinks until calibration is completed, then successive display of:
CAL DATA
1
/2/3 CAL POINTS
ZERO POINT
SLOPE
The meter then automatically returns to measuring mode.
CALIMATIC Calibration
(Calibration with automatic buffer recognition)
The calibration method is selected in the configuration menu.
Calibration is required to adjust the sensor
to the meter. It is indis‑
pensable for achieving comparable and reproducible measurement
results.
pH Calibration
Note:
To abort calibration, you can press
meas
at any time. This will be confirmed
by the “CAL ABORTED” display message. Exception: When you have selected “CAL
POINTS 1‑2‑3” and the first calibration step has been completed, the calibration
process cannot be stopped any more.
Summary of Contents for Portavo 904X COND
Page 2: ......
Page 67: ...67 pH Buffer Tables 01 Mettler Toledo Nominal values in bold C pH ...
Page 68: ...68 pH Buffer Tables 02 Knick CaliMat Nominal values in bold C pH ...
Page 69: ...69 pH Buffer Tables 03 Ciba 94 Nominal values 2 06 4 00 7 00 10 00 C pH 1 extrapolated ...
Page 70: ...70 pH Buffer Tables 04 Technical Buffers to NIST Nominal values in bold C pH 1 values added ...
Page 72: ...72 pH Buffer Tables 06 HACH Nominal values 4 01 7 00 10 01 0 02 at 25 C C pH ...
Page 73: ...73 pH Buffer Tables 07 WTW Technical Buffers Nominal values in bold C pH ...
Page 74: ...74 pH Buffer Tables 08 Hamilton Nominal values in bold C pH ...
Page 75: ...75 pH Buffer Tables 09 Reagecon Nominal values in bold C pH 1 values added ...
Page 76: ...76 pH Buffer Tables 10 DIN 19267 Nominal values in bold C pH 1 extrapolated ...