KROHNE DK 46-47-48-800 EN - Manual (Page 21)

START-UP
5
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DK46 - DK800
www.krohne.com 05/2011 - 4000302403 MA DK46-800-R03-en
Start-up
5.1 Start-up
CAUTION!
When starting up the flowmeter, the following points must be observed:
•
Compare the actual operating pressure and the process temperature of the system with the
specifications on the nameplate (PS and TS); these limits must not be exceeded.
• Make sure materials are compatible.
• Close the needle valve at the flowmeters.
• Slowly open the shut-off valve upstream and downstream of the flowmeter.
• When measuring liquids, vent the pipes carefully.
• When measuring gases, increase pressure slowly.
• void float impact (e.g. caused by solenoid valves), as this is likely to damage the measuring
section or float.
• Open needle valve at the flowmeters and set the required flow rate.
• The top edge of the float marks the reading line for flow values:
Figure 5-1: Reading edge
1 Reading edge
2 Floatform AIII
3 Floatform ball
MA_DK46_800_R03_en_302403_PRT.book Page 21 Thursday, May 19, 2011 8:26 AM