A flow verification service is carried out for electromagnetic flow meters and open channel flow meters (using parshall flume table) of effluent drains and final discharge points at a paper mill in Selangor, Malaysia.
Requirements
- Instrument:
- 5 open channel flow meters
Throat width size: 9-12″
Installation height: 1-1.90m - 3 electromagnetic flow meters
Pipeline size: 12″
Wall thickness: 10mm
- 5 open channel flow meters
- Medium: Effluent
- To ensure the flow meter error variation within +-5% against calibrated ultrasonic flow meter.
Solutions
- For the open channel flow meter, the throat width size, installation height and the water level is measured. The flow rate is calculated using the formula provided by the parshall flume table.
- For the electromagnetic flow meter, a point of measurement was chosen on the pipeline. The reading is compared against our calibrated test equipment.
- Recommendations were suggested as the site condition such as frequency noise and vibration may affect the accuracy of the flow verification process.
- This verification lasts for one (1) year.
