Hach POLYMETRON 9135 - Page 67

Transmitter 9135 – pH/redox measurement
Page 63
ERROR MESSAGES DURING A CALIBRATION
NOTE : Press ESC to leave the menu and calibrate again.
OFFSET
OUT OF LIMITS
SLOPE : 99,9%
ZERO : 4.00 pH
PH CALIB.
The zero shift is superior to the limit
programmed.
Limits :
- pH calibration : ± 3 pH
- redox calibration : ± 250 mV
SLOPE
OUT OF LIMITS
SLOPE : 130%
ZERO : 0.1 pH
PH CALIB.
The slope shift is superior to the limit
programmed.
Limits : 70...120 %
)
T
OUT OF LIMITS
PH CALIB.
) T : +25.0°C
) T
OUT OF LIMITS
PH CALIB.
) T : +25.0°C
The temperature drift is superior to the limit
programmed.
Limits : -50°C/+20°C
ERROR MESSAGES DURING AN IMPEDANCE MEASUREMENT TEST.
NOTE : Press ESC to leave the menu.
GLASS
TEST
TOO LOW
REFERENCE
TOO LOW
The impedance measurement is inferior to
5 MΩ for the glass electrode and 100 Ω for
the reference electrode.
GLASS
TEST
TOO HIGH
REFERENCE
TOO HIGH
The impedance measurement is superior to
1 GΩ for the glass electrode.
∆
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