Null - Slop; Configuration Parameter For General (Not Ph-Specific) Functions - JUMO 202550 Operating Instructions Manual

13 Configuration level of the pH indicator

13.5 nuLL - SLoP

SLoP
nuLL
SiL
SiH
13.6 Configuration parameter for general (not pH-specific)
functions
38
Slope correction
The slope of the output signal of a pH electrode changes during operation.
The electrode slope can be determined automatically during 2-point
calibration (see chapter "Calibration"), or it can be entered manually.
Value range: 75.0 — 110.0%, if standard electrode is configured,
Chapter 13.3 "Electrode type - C112", page 37.
Value range: 10.0 — 110.0%, if special electrode (antimony) is configured,
Chapter 13.3 "Electrode type - C112", page 37.
Factory setting: 100.0%
Zero point correction
The zero point of the ideal pH electrode is pH 7. Because of manufacturing
variations, and also because the electrode parameters change during
operation, the real electrode zero deviates from pH 7. This deviation from the
ideal zero can be corrected with "nuLL".
Value range: 5.00 — 9.00 pH if standard electrode is configured,
Chapter 13.3 "Electrode type - C112", page 37.
Value range: -2.00 — 16.00 pH if special electrode (antimony) is configured,
Chapter 13.3 "Electrode type - C112", page 37.
Factory setting: 7.00 pH
Start of transmission range
This value is taken from the operating instructions for the attached instrument.
Example for JUMO 202701:
SiL = 600 mV
End of transmission range
This value is taken from the operating instructions for the attached instrument.
Example for JUMO 202701:
SiL = -600 mV
Chapter 26 "Configuration level (not instrument-specific)", page 74.