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9 Block BASIC FUNCTION
Device Functions Proline Promag 55
126
Hauser
9.4.2
Function group OPERATION
BASIC FUNCTION
G
⇒
HART
GAA
⇓
PROCESS PARAMETER
GIA
⇓
SYSTEM PARAMETER
GLA
⇓
SENSOR DATA
GNA
⇒
CONFIGURATION
680
⇓
OPERATION
682
Function description
BASIC FUNCTION
➞
SENSOR DATA
➞
OPERATION
All sensor data (measuring period, overvoltage time, etc.) are set at the factory and saved on the S-DAT sensor memory
chip.
"
Caution!
Under normal circumstances you should not change the following parameter settings, because changes affect numerous
functions of the entire measuring facility in general and the accuracy of the measuring system in particular. For this
reason, the functions described below cannot be changed even when you enter your personal code.
Contact the Hauser service organization if you have any questions about these functions.
MEASURING PERIOD
(6820)
Use this function to view the measuring period. The duration of the measuring period is
calculated from the rise time of the magnetic field, the brief recovery time, the integration
time and the empty pipe detection time.
User interface:
max. 4-digit number: 10 to 1000 ms
Factory setting:
Depends on nominal diameter
EPD ELECTRODE
(6822)
Use this function to check whether the sensor is equipped with an EPD electrode.
User interface:
YES
NO
Factory setting:
YES
→
Electrode fitted as standard
POLARITY ECC
(6823)
Use this function to display the actual current polarity for optional electrode cleaning
(ECC). Electrode cleaning uses either a positive or negative current, depending on the
electrode material.
The measuring device automatically selects the correct polarity on the basis of the
electrode-material data stored in the S-DAT.
User interface:
POSITIVE
→
for electrodes made of: 1.4435/316L, Alloy C-22, platinum, titanium,
tungsten carbide coating (for electrodes made of 1.4435), 1.4310/302
NEGATIVE
→
for electrodes made of: tantalum
"
Caution!
If the incorrect current is applied to the electrodes, the electrode material is destroyed.
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