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WIKA operating instructions submersible pressure transmitter, model LH-10
14075011.03 07/2016 EN/DE/FR/ES
EN
6. Commissioning, operation / 7. Maintenance and cleaning
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Load in Ω
Current output (2-wire):
≤ (power supply - 10 V) / 0.02 A - (cable length in m x 0.14 Ω)
Current output (3-wire):
≤ (power supply - 3 V) / 0.02 A - (cable length in m x 0.14 Ω)
Voltage output (3-wire):
> 100 kΩ
6.3 Functional check
The output signal must be proportional to the prevailing pressure. If this is not the case, this may indicate a damaged
diaphragm. In this case, see chapter 8 “Faults”.
7. Maintenance and cleaning
7.1 Maintenance
This submersible pressure transmitter is maintenance-free.
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
CAUTION!
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Prior to cleaning, switch off and disconnect the submersible pressure transmitter from the voltage
supply.
■
Clean the instrument with a moist cloth.
■
Wash or clean the dismounted instrument before returning it, in order to protect persons and the environ-
ment from exposure to residual media.
■
Residual media in dismounted instruments can result in a risk to persons, the environment and
equipment. Take sufficient precautionary measures.
■
Do not use any pointed or hard objects for cleaning, as they may damage the diaphragm of the process
connection.
For information on returning the instrument see chapter 9.2 “Return”.
Summary of Contents for LH-10
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