the large waterflow laboratory- a new facility for calibrating large size flowmeters
DESCRIPTION
Seminar Session 14TRANSCRIPT
THE LARGE WATERFLOW LABORATORY- A NEW FACILITY FOR CALIBRATING LARGE
SIZE FLOWMETERS
G.Sundaravadivel,Dr.Jacob Chandapillai,
A.S.Murali
CALIBRATION OF LARGE SIZE FLOW PRODUCTS
LIMITATIONS OF INDIRECT METODES Scaled down model study By-pass flow metering technique Insertion flow meters Calibrating higher size flowmeter in a smaller size
calibration rig. Velocity vs error curve
Specifications The major specifications when the NABL
and the market requirements are merged Flow Medium :Water Maximum discharge :15000 m3/hr Pipe Line Size :2000mm (Design) & Ready to Use
1200mm Maximum velocity :1.4m/s. in 2000mm dia. & 3.4
m/s. in 1200mm dia Maximum Line Size Possible :3000mm Sump Dimensions :50m (L)x 8 m (W) x 7.5 m (D) Type of Flow :Direct Pumping Pumps :Vertical turbine 5 numbers Head :20m of Water Column Type of Drive :Electrical Motor, Slip ring type Power :DG Sets, 1250 KVA 2 Nos Uncertainty :+/- 0.5%
SUMP
PUMP HOUSE POWER HOUSE
REFERENCE FLOWMETERS TEST LINE
TRACEABILITY OF MEASUREMENTS FLOWRATE(REF.FLOWMETERS)
TRACEABLE TO WFL,FCRI STATIC WEIGHING METHOD
MASS---WORKING STD. AT PSL,FCRI---NPL TIME---WORKING STD.AT ETL,FCRI---NPL TEMP.---WORKING STD.AT ETL,FCRI---NPL
DIFFL.PR.--- WORKING STD.A STROKE
(LENGTH)--- WORKING STD. AT PSL,FCRI---NPL
OVERALL UNCERTAINTY IN FLOWRATE MEASUREMENT IS BETTER THAN +/-0.5%
CALIBRATION OF FLOWMETERS AT LWFL
THANK YOU