Siemens SITRANS LR200 7ML5422, Руководство по эксплуатации

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Installing/mounting
4.3 Installation
SITRANS LR200 with mA/HART
Operating Instructions, 05/2019, A5E32337676-AE
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4.3 Installation
Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts
have no pressure-bearing housing of their own and, therefore, do not come under the
Pressure Equipment Directive as pressure or safety accessories, (see EU Commission
Guideline 1/8).
Note
Process device tag
The Process Device Tag shall remain with the process pressure boundary assembly
1)
. In the
event the instrument package is replaced, the Process Device Tag shall be transferred to the
replacement unit.
The serial numbers stamped in each process connection body provide a unique identification
number indicating date of manufacture. Example: MMDDYY – XXX (where MM = month, DD
= day, YY = year, and XXX= sequential unit produced). Further markings (space permitting)
indicate flange configuration, size, pressure class, material, and material heat code.
1)
The process pressure boundary assembly comprises the components that act as a barrier
against pressure loss from the process vessel: that is, the combination of process
connection body and emitter, but normally excluding the electrical enclosure.
4.3.1 Installation instructions
Note
•
For pressure applications, it will be necessary to use PTFE tape or other appropriate
thread sealing compound, and to tighten the process connection beyond hand-tight.
• There is no limit to the number of times the device can be rotated without damage.
•
When mounting, orient the front or back of the device towards the closest wall.
• Do not rotate the enclosure after programming and device configuration, otherwise an
error may occur, caused by a polarity shift of the transmit pulse.
1. Before inserting SITRANS LR200 into its mounting connection, check to ensure the
threads are matching, to avoid damaging them.
2. Screw SITRANS LR200 into the process connection and hand tighten. For pressure
applications, it will be necessary to use PTFE tape (or other appropriate thread sealing
compound) and to tighten the process connection beyond hand tight.
The maximum torque is 40 N·m (30 ft.lbs).