Installation; Installation Conditions; General Installation Instructions; Mounting Sensor Modules With Pvdf Thread - Endress+Hauser Cerabar M PMC51 Brief Operating Instructions

Installation

4 Installation
4.1

Installation conditions

4.1.1 Dimensions
Dimensions → see the Technical Information for Cerabar M TI00436P, "Mechanical
construction" section.
4.2

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)
• For the following process connections a tightening torque of max. 40 Nm (29.50 lbf ft) is
required:
• Thread ISO228 G1/2 (Order option "GRC" or "GRJ" or "G0J")
• Thread DIN13 M20 x 1.5 (Order option "G7J" or "G8J")
4.3

Mounting sensor modules with PVDF thread

WARNING
L
Risk of damage to process connection!
Risk of injury!
‣
Sensor modules with PVDF thread must be installed with the mounting bracket provided!
WARNING
L
Material fatigue from pressure and temperature!
Risk of injury if parts burst! The thread can become lose if exposed to high pressure and
temperature loads.
‣
The integrity of the thread must be checked regularly. Also, 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.
10
Cerabar M PMC51, PMP51, PMP55
Endress+Hauser