5 MAINTENANCE
5.1 Storing and Cleaning of the Electrode
Graphite and stainless steel conductivity measuring cells do not require any special
maintenance. However, the electrodes must always be kept in clean condition. In case of
contamination, they can easily be cleaned with slightly acidic solution or solvent. Before
use or during extended measuring interruptions (several weeks) the graphite measuring
cells should always be kept wet in order to shorten the rise time and avoid fractures on the
electrode surface. While cleaning the HOLD function can be activated, allowing the process
to continue.
Torque for electrode installation 2N.m
5.2 Trouble-shooting guide
"ERROR" on the display (exept in Teach-in function) indicates that the calibration data has
been lost. By pressing the ENTER key, the user can access the main menu although the
device works with the factory settings (see § 5.3). The transmitter will need recalibrating.
If this message appears persistently, please return the device to the factory.
5.3 Factory-settings of Type 8225 at Delivery
Language:
Unit of conductivity:
Unit of temperature:
Decimal points:
Cell constant:
Temperature compensation
coefficient:
Current:
4 mA:
20 mA:
User settings of 8225 Transmitter N
Language:
Unit of conductivity:
Unit of temperature:
Decimal points:
Cell constant:
T°C coefficient:
Current:
4 mA:
20 mA:
8225-COMP-**
English
µS/cm
°C
2
01.0000
00.00 %/ °C
00.00
00.00
°
:
E-23-
CONDUCTIVITY 8225
Relay:
1-:
1+:
2-:
2+:
DEL1:
DEL2:
Filter:
Relay:
1-:
1+:
Inverted:
2-:
2+:
Inverted:
DEL1:
DEL2:
Filter:
00.00
00.00
00.00
00.00
000
000
Filter 2