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9 Block BASIC FUNCTION
Device Functions Proline Promag 55
120
Hauser
9.2.3
Function group ECC PARAMETER
BASIC FUNCTION
G
⇒
HART
GAA
⇓
PROCESS PARAMETER
GIA
⇒
CONFIGURATION
640
⇓
EPD PARAMETER
642
⇓
ECC PARAMETER
644
Function description
BASIC FUNCTION
➞
PROCESS PARAMETER
➞
ECC PARAMETER
ECC
(6440)
!
Note!
This function is not available unless the measuring device is equipped with an (optional)
electrode cleaning function.
Use this function to activate cyclical electrode cleaning (ECC).
Options:
ON (only with the optional electrode cleaning function ECC)
OFF
Factory setting:
ON (only if the optional electrode cleaning function ECC is available)
Notes on electrode cleaning (ECC)
Conductive deposits on the electrodes and on the walls of the measuring tube (e.g.
magnetite) can falsify measurement values. The Electrode Cleaning Circuitry (ECC) was
developed to prevent such conductive deposits accreting in the vicinity of the electrodes.
ECC functions as described above for all available electrode materials except tantalum. If
tantalum is used as the electrode material, the ECC protects the electrode surface only
against oxidation.
"
Caution!
If the ECC is switched off for a prolonged period in applications with conductive deposits,
a layer forms inside the measuring tube and this can falsify measurement values. If the
layer is allowed to accrete beyond a certain level, it might no longer be possible to
remove it by switching on the ECC. If this happens the measuring tube must be cleaned
and the layer removed.
ECC DURATION
(6441)
!
Note!
This function is not available unless the measuring device is equipped with the optional
electrode cleaning function (ECC).
Use this function to specify the electrode cleaning duration.
User input:
Fixed-point number: 0.01 to 30.0 s
Factory setting:
2.0 s
Содержание Proline Promag 55
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