Flowmetering Gilflo and ILVA flowmeters 3
Installation Care must be taken to meet all the requirements of the Installation and Maintenance Instructions, which are provided with the equipment. Installation points to watch: 1. Ensure all pipework is adequately supported and properly aligned. 2. The Gilflo pipeline unit should be selected on capacity rather than line size. Where pipe size reduction on steam systems is necessary, use eccentric reducers to avoid waterlogging. 3. The minimum recommended lengths of straight pipe are 6D upstream and 3D downstream. 4. Take care to ensure the correct direction of flow as indicated by the arrow on the flowmeter body. 5. Take precautions to avoid reverse flow through the flowmeter. 6. Avoid installing the flowmeter downstream of a pressure reducing valve (especially on steam systems) as this may cause inaccuracies and/or possible damage. Similarly avoid installing the flowmeter downstream of a partially open valve. 7. Remember that actuated valves may cause rapid pressure fluctuations which could cause damage. 8. On steam or liquid systems take care to ensure that all impulse lines remain full to prevent damage to the DP transmitter through contact with steam or high temperature liquid. 9. For steam applications, care should be taken to ensure adequate line drainage, trapping etc., to avoid condensate slugs impacting the flowmeter. Where practicable, steam separators should be fitted. These should be drained using a float trap set. 10. For gas applications ensure that the DP cell and impulse lines are positioned above the pipework. Also ensure that the impulse lines allow free drainage of moisture away from the DP cell and back into the pipeline.
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Electrical wiring All electrical wiring must be carried out to the appropriate standards. Full wiring interconnection details are included with the equipment.
How to order For details of how to specify system components refer to the relevant TI document.
TI-S41-10 MI Issue 10
Gilflo Flowmeters System Overview
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