Siemens SITRANS LVL200H, Руководство по эксплуатации, Страница: 16 / 40

16 MAN-100048 SITRANS LVL200H - Operating Instructions
49231-EN-170719
Use screw-in openings or screw-in sleeves according to DIN 3852
part 2.
Make sure that with instruments with 1" NPT thread, the screw-in
opening on the vessel has an inside diameter of at least 29.5 mm
(1.16 in).
To mount the sensor, proceed as follows:
1. Screw the SITRANS LVL200H into the mounting boss up to the
stop. You can determine the later position already before welding.
2. Mark the position of the SITRANS LVL200H on the mounting
boss.
3. Mark the respective position of the mounting boss on the vessel.
In case of lateral mounting, make sure the mark on the spanner
flat of SITRANS LVL200H points upwards.
4. Remove the SITRANS LVL200H from the mounting boss before
welding.
5. Weld the mounting boss according to your marking.
In case of horizontal mounting in adhesive and viscous products,
the surfaces of the tuning fork should be vertical in order to reduce
buildup on the tuning fork. On the screwed version you will find a
marking on the hexagon. With this, you can check the position of the
tuning fork when screwing it in.
In the case of flange versions, the fork is aligned with the flange holes.
When used in adhesive and viscous products, the tuning fork should
protrude into the vessel to avoid buildup. For that reason, sockets
for flanges and mounting bosses should be avoided when mounting
horizontally.
The process fitting must be sealed if there is gauge or low pressure in
the vessel. Before use, check if the seal material is resistant against
the measured product and the process temperature.
The max. permissible pressure is specified in chapter "
Technical
data " or on the type label of the sensor.
Note:
Seal for instruments with process fitting thread
The thread and the seal form on the mounting boss correspond to
DIN 3852, part 2, screwed plug Form A.
We recommend using a temperature and medium-resistant seal for
dismounting the instrument for maintenance and revision purposes.
Instruments for high temperatures have a temperature adapter be-
tween process fitting and electronics housing. This is used for thermal
decoupling of the electronics from high process temperatures.
Information:
The temperature adapter may be embedded in the vessel insulation
only up to max. 50 mm (1.97 in). Only then is a reliable temperature
decoupling guaranteed.
Adhesive products
Pressure/Vacuum
Mounting in the vessel
insulation