9
TDOCT-
3147_E
NG
259858
08/
2013
Pressure Transmitter LHCR-51, LHCS-51
Mounting
2.5
Supplementary installation instructions
Seal
Pressure transmitter with a G1-1/2 thread:
When screwing the device into the tank, the flat seal has to be positioned on the
sealing surface of the process connection. To avoid additional strain on the process
isolating diaphragm, the thread should never be sealed with hemp or similar
materials.
Pressure transmitter with NPT threads:
– Wrap Teflon tape around the thread to seal it.
– Tighten the device at the hexagonal bolt only. Do not turn at the housing.
– Do not overtighten the thread when screwing. Max. torque: 20 Nm to 30 Nm
(14.75 lbf ft to 22.12 lbf ft)
Sealing the probe housing
Moisture must not penetrate the housing when mounting the device, establishing the
electrical connection and during operation.
Always firmly tighten the housing cover and the cable entries.
2.6
Closing the cover on the stainless steel housing
2
Closing the cover
The cover for the electronics compartment is tightened by hand at the housing until the
stop. The screw serves as DustEx protection.
2.7
Post-installation check
After installing the device, carry out the following checks:
Are all screws firmly tightened?
Are the housing covers screwed down tight?
DOCT3147_eng.book Seite 9 Freitag, 16. August 2013 4:58 16
