Badger Meter E-Series Ultrasonic Meters - Manual (Page 2)

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ULTRASONIC METER INSTALLATION
To prepare for meter installation, follow these steps:
1. Close the meter’s inlet-side valve.
2. Open a faucet and wait until water flow stops, to depressurize
the system. Do not remove the meter until the flow stops.
3. Check valves and make necessary repairs to the curb (shut-off )
valve or inlet side valve if necessary.
4. Close the meter’s outlet-side valve. Protect the floor below the
meter against potential spills or leaks that could occur. Protect
the coupling area from debris, so that the new meter will not be
damaged or contaminated.
5. To replace an existing meter continue with Step 6. To install a
new meter skip to Step 8.
6. Depending on meter size, loosen meter couplings/flange
connection bolts and remove the meter and the old gaskets.
7. Clean the coupling nuts/flanged ends removing any pipe dope
or dirt from the meter ends.
8. Check the existing setting for proper alignment and spacing.
Correct any misalignment and spacing in the setting.
9. Place the new connection gaskets inside the connection.
10. Set the meter in the pipeline so that the flow arrow on the meter
housing points in the direction of flow.
11. With the meter and gaskets in place, tighten the coupling
nuts/flange connection bolts. Verify that the nuts are properly
aligned to avoid damage to the meter ends.
GUIDELINES FOR TESTING E-SERIES ULTRASONIC
RESIDENTIAL METERS
The E-Series Ultrasonic meter is a highly accurate electronic
meter that operates on an entirely different principle than a
positive displacement meter due to the fact that it has no moving
parts. Since the meter testing outcome is based on accurate
measurement of the velocity of water through the meter, any water
turbulence and pressure fluctuations that occur during the short
testing intervals can affect the results. Pipeline valves, fittings or
impediments installed too close can cause flow disturbances and
could affect the accuracy results.
• Reference meters should be installed downstream of the
Ultrasonic meter.
• For the 1-1/2" and 2" meters, provide 5 to 10 diameters of straight
pipe upstream of the meter to improve accuracy.
• System should be purged of air and the meter completely filled
with water. To do this, run at least 100 gallons of water through
the system at maximum flow.
• Start the meter test at the high flow first and then continue with
the lower flows. This will help ensure all air is purged through
the meter.
• For the 5/8" to 1" meters, run at least a volume of 100 gallons
at the high, mid and low flows. Run at least 10 gallons at the
extended low flow rate.
• For the 1-1/2" and 2" meters, run at least 40 gallons for the
low and mid-flow tests. Run at least 500 gallons for the high
flow tests.
• The greater the volume of water measured or the longer the test
is run, the more accurate the meter test measurement will be.
SAMPLING RATE AND E-SERIES ULTRASONIC
TEST MODE
Ultrasonic signals are sent at a fixed time interval (also called
sampling rate) to conserve battery life. Very high meter accuracies
can be observed in the normal mode of operation, however at the
expense of higher test volumes and longer test times. Because
of this flow sampling technique, special testing methodology in
a meter shop can be performed by temporarily increasing the
sampling rate to observe the high accuracy performance at
ultra-low flows in a reasonable test time. For more information
on the high resolution test mode, refer to the Application Brief,
available online at www.badgermeter.com .
For more detailed information on the Ultrasonic meter, refer to the
Installation and Operation manuals, available online at www.badgermeter.com .