Endress+Hauser Deltatop DP71B, Руководство по эксплуатации

Страница: 32 / 52

Installation Deltatop DP71B, DP72B, DP73B
32 Hauser
5. Orient the valve such that the valve stem is parallel to the centerline of the pipe.
a. For horizontal pipes, orient the valve such that the valve stem is parallel to the centerline
of the pipe.
b. For vertical pipes, orient the valve such that the valve stem is perpendicular to the
centerline of the pipe.
6. Orient the sensor such that the arrow labeled "flow" on the device head is in the direction of
the flow in the pipe to within 3°.
7. Bolt the access nipple to the access valve using the gasket studs and nuts provided.
3.14.1
Installation of the shut-off valves (for the remote version):
The shut-off valves have to be mounted to the nozzles of the primary element before mounting the
sensor into the pipe.
3.14.2
Installation of the manifold and the transmitter (for the remote version):
The impulse pipes have to be installed with the required slope
(for liquids or steam:
→
ä
10; for gases:
→
ä
11).
• For steam and liquids, a venting possibility has to be provided at the highest point.
• For gases, a drainage has to be mounted at the lowest point. The impulse lines (+) and (-) have to
be mounted to the respective inlets (process connections) of the manifold.
The transmitter is directly screwed to the manifold with the supplied screws and gaskets.
3.14.3 Sensor insertion of the probe without process interruption
#
Warning!
The flow rate must be decreased to the amount stated on the Deltatop tag: the maximum insertion/
withdrawn dp / flow limit.
1. Completely open the access valve. Then, using the drive nut, insert the sensor. The drive nuts
should be alternately tightened approximately 1/8" (3 mm) at a time.
2. The tip of the sensor should completely bottom on the opposite end of the pipe. Continue to
insert the sensor until firm resistance is met. This will occur when the sensor plate is
approximately 2" (51 mm) from the top of the packing gland.
3. Thread the jam nuts toward the threaded bushings. The jam nuts should press tightly against
the threaded bushings. This will lock the drive rods in place and maintain the sensor position
in the pipe.
3.14.4 Sensor removal of the probe without process interruption
#
Warning!
The flow rate must be decreased to the amount stated on the Deltatop tag: the maximum insertion
/ withdrawn dp / flow limit.
1. Shut off device valves (disconnect the impulse pipe if necessary).
2. Loosen the jam nuts.
3. Using the drive nuts, retract the sensor until the stop nuts and jam nuts are pressing against
the threaded bushings.
4. The drive nuts should be alternately loosened approximately 1/8" (3 mm) at a time.
5. Completely shut off the access valve.
6. Slowly open one of the device valves and bleed off any remaining pressure contained in the
access nipple.
7. The sensor assembly can now be removed.