ProMinent DULCOMETER D1Cb - Calibration of Amperometric Measured Variables

7.5 Calibration of All Amperometric Measured Variables
WARNING!
Danger of incorrect metering
This can result in hazardous incorrect metering
During initial commissioning, the measured variable and the measuring range of the
sensor must be set prior to calibration. Refer to
Ä Chapter 5.1.2 ‘Selection of the
Measured Variable and Measuring Range’ on page 54
calibration
zero p.:
take over value?
4.00 mA
calibration
DPD-value
1.55 ppm
calibration
zero p.: 4.00 mA
slope
6.50 mA/ppm
calibration
zero p.: 4.00 mA
slope
6.50 mA/ppm
calibration
Zeropoint
4.00 mA
calibration
DPD-value
01.55 ppm
A0018_GB
14.00 mA
Fig. 38: Calibration of All Amperometric Measured Variables
Error message Condition Remarks *
Calibration not possible!
Gradient too low
Gradient too low
(< 20 % of standard gra‐
dient)
Repeat calibration
Calibration not possible!
Gradient too high
Gradient too high
(> 300 % of standard gra‐
dient)
Repeat calibration
DPD value too low
DPD > x.xx ppm
DPD < 2 % of measuring
range
Repeat calibration after
addition of metering
medium or fit sensor suit‐
able for the process
* Please also note the operation manual for the respective sensor
Measured Variables and Operating Menus for Amperometric Sensors
74