Endress+Hauser Cerabar PMC51B, Краткое руководство по эксплуатации

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Mounting Cerabar PMC51B HART
8 Hauser
• Using a valve manifold allows for easy commissioning, installation and maintenance
without interrupting the process
• When mounting the device, establishing the electrical connection and during operation:
prevent the penetration of moisture into the housing
• Point the cable and plug downwards as much as possible to prevent moisture from entering
(e.g. rainwater or condensation)
5.1.3 Installation instructions for thread
• Device with G 1 ½" thread:
Place the flat seal on the sealing surface of the process connection
Avoid additional strain on the membrane: do not seal the thread with hemp or similar
materials
• Device with NPT thread:
• Wrap Teflon tape around the thread to seal it
• Tighten the device at the hexagon bolt only; do not turn it by the housing
• When screwing in, do not overtighten the thread; tighten the NPT thread to the required
depth according to the standard
• For the following process connections, a tightening torque of max. 40 Nm (29.50 lbf ft) is
specified:
• Thread ISO228 G ½" with flush membrane
• Thread DIN13 M20 x 1.5 with flush membrane
• NPT 3/4" with flush membrane
Mounting devices with PVDF thread
L
WARNING
Risk of damage to process connection!
Risk of injury!
‣
Devices with a PVDF thread must be installed with the mounting bracket provided!
‣
PVDF is only intended for metal-free applications!
L
WARNING
Material fatigue from pressure and temperature!
Risk of injury if parts burst! The thread can become loose if exposed to high pressure and
temperature loads.
‣
Check the leak-tight integrity of the thread regularly.
‣
Use Teflon tape to seal the ½" NPT thread.
5.1.4 Orientation
NOTICE
Damage to the device!
If a heated device is cooled during a cleaning process (e.g. by cold water), a vacuum develops
for a short time. As a result of this, moisture can enter the measuring cell via the pressure
compensation element (1).
‣
Mount the device as follows.