Installation Conditions; General Installation Instructions; Installing - Endress+Hauser Deltapilot M FMB51 Brief Operating Instructions

Installation
4.3

Installation conditions

4.3.1 Dimensions
For dimensions, please refer to the Technical Information for Deltapilot M TI00437P,
"Mechanical construction" section.
4.4

General installation instructions

• Devices with a G 1 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.
• Devices 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 to 30 Nm (14.75 to 22.13
lbf ft)
4.4.1 Mounting sensor modules with PVDF thread
WARNING
!
Risk of damage to process connection!
Risk of injury!
‣
Sensor modules with PVDF process connections with threaded connection must be installed
with the mounting bracket provided!
WARNING
!
Material fatigue from pressure and temperature!
Risk of injury if parts burst! The thread can become loose if exposed to high pressure and
temperatures.
‣
The integrity of the thread must be checked regularly and the thread may need to be
re-tightened with the maximum tightening torque of 7 Nm (5.16 lbf ft). Teflon tape is
recommended for sealing the ½" NPT thread.
4.5

Installing

• Due to the orientation of the Deltapilot M, there may be a shift in the zero point, i.e. when the
container is empty or partially full, the measured value does not display zero. You can correct
this zero point shift  ä 25, Section "Function of the operating elements" or  ä 37,
Section 8.4 "Position zero adjustment".
• The local display can be rotated in 90° stages.
• Endress+Hauser offers a mounting bracket for installing on pipes or walls.
 ä 14, Section 4.5.6 "Wall and pipe mounting (optional)".
10
Deltapilot M 4...20 mA HART
Endress+Hauser