Endress+Hauser Proline t-mass 65 PROFIBUS DP, Руководство по эксплуатации

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Installation Proline t-mass 65 PROFIBUS DP
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Removing
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Warning!
• The insertion sensor can only be safely removed at atmospheric conditions.
• Stop the process gas flow and de-pressurize the process line. Purge the line with an inert gas to
remove any hazardous or toxic gases. Allow the installation to cool to a safe temperature before
handling any metal parts. Check and verify that this is so. Ensure that the process cannot be re-
started during the removal procedure.
1. Loosen the securing screws (a).
2. Loosen the upper compression fitting nut with a wrench (b) and then undo the lower
compression fitting nut (c).
3. Remove the insertion sensor completely from the cold tap (d).
4. Close the ball valve before re-starting the process (e).
a0005132
Fig. 14: Removing the insertion sensor from the cold tap.
3.2.11 System pressure
Reciprocating pumps and some compressor systems can create strong changes in process pressure
that can induce spurious internal flow patterns and therefore cause additional measurement error.
These pressure pulses must be reduced by the appropriate measures:
• Use of expansion tanks
• Use of inlet expanders
• Relocate the thermal measuring device
d
b
c
e
a