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Proving
To simulate actual conditions when testing the Dattus with a 2” flange, attach
a 2” pipe/flange combination to the meter’s inlet.
Follow Figure 4.2 to properly connect the meter, 25 ft hose, choke valve, dampener, 3 ft hose and
transfer prover.
Mete
r
Choke valve
3 ft hose
Dampener
To
Prover
25 ft hose
Figure 4.2 Damper Connection Schematic
The addition of the “Choke Valve” provides additional pulsation dampening at lower flow rates. For
best performance of the dampener, the Choke Valve should be in the “closed” position for calibration
below 3000 acfh.
Table 4.1 Conditions to use the Damper & Position of Ball Valve
Flow Rates
>3,000 CFH
Transfer Prover Position of Ball Valve
Reference Meter
10M
Open
3,000 CFH - 500 CFH
2,000 CFH - 300 CFH
10M
2M
Closed
Closed
Connecting the Pressure, Temperature, and Flow Hoses
The Dattus meter has three pressure taps on each side of the meter that
may be used for testing.
1
Choosing either side of the meter, locate the center pressure tap and the one closest to the
inlet of the meter as indicated in Figure 4.3.
Dattus fM Meter Technical Reference Guide
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