Endress+Hauser Deltatop DP71B, Руководство по эксплуатации

Страница: 28 / 52

Installation Deltatop DP71B, DP72B, DP73B
28 Hauser
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.
3.12.1
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.
3.12.2
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.
3.12.3 Sensor insertion of the probe without process interruption
1. The Deltatop should be oriented such that the arrow on the head is pointing in the direction
of flow.
2. Attach a come-along or similar type of device to the come-along ring on the device head.
3. Wrap the other end of the come-along around the circumference of the pipe and firmly secure it.
4. Completely open the access valve.
5. Insert the Deltatop until the tip of the sensor completely bottoms on the opposite end of the pipe.
6. Once the sensor is completely bottomed, slide the retaining ring over the three retaining studs
and tighten the retaining nuts until the ring presses firmly against the weld ring.
7. Jam nuts should now be threaded on and pressed tightly against the retaining nuts.
#
Warning!
The retaining ring must be secured before the come-along is removed.
8. At this point, the come-along can be safely removed.
9. Re-verify that the orientation of the sensor is such that the arrow labeled "flow" on the device
head is in the direction of the flow in the pipe to within 3°.
3.12.4 Sensor removal of the probe without process interruption
1. Shut off device valves (disconnect the impulse pipe if necessary).
2. Properly install a come-along and eliminate all slack from the come-along.
3. Remove jam nuts and retaining nuts.
4. Pull retaining ring off retaining studs.
5. Slowly retract the come-along and do not allow more than 1/2" (13 mm) of slack to develop
in the come-along during the entire retraction process.
6. Retract the sensor until the safety cable is tight.
7. Completely shut off the access valve.
8. Slowly open one of the Deltatop device valves and bleed off any remaining pressure contained
in the access nipple.
9. The sensor assembly can now be removed.