Badger Meter Oscillating Piston Meter - Manual (Page 10)

MAINTENANCE
General
This section contains information for servicing and maintaining of the meter The information consists of preventive
maintenance, calibration and adjustment and general servicing procedures Instructions for ordering replaceable parts
and assemblies are provided in an Illustrated Repair Parts Bulletin that is included with this manual Any service and repair
procedures applicable to a meter-mounted or free-standing accessory are provided in the bulletin or instruction manual
covering the device
Preventive Maintenance
The purpose of preventive maintenance is to ensure efficient operation and long life by detecting and correcting any defects
before damage or meter failure occurs Preventive maintenance consists of periodic inspection and cleaning procedures
The procedures should be performed at regular intervals and any defects discovered should be corrected before attempting
further operation
1 Visually inspect the meter and applicable accessory for loose connections, missing hardware, cracked or broken dial
glass, damaged wiring or any other signs of wear or deterioration Repair or replace parts as necessary
2 Clean all dust, dirt or other foreign material from the exterior of the meter and accessory
3 Fluid metering applications involving food ingredients require that Only manual cleaning (remove meter housing
cover) can be used for sanitary OP meters
4 Fluid metering applications involving chemical solutions can be cleaned manually or mechanically by a meter bypass
and flush system
If the facility piping arrangement includes a meter bypass and flushing system (see "Figure 2" ), shut off fluid flow to the meter
and flush interior of meter housing with clean water to remove any buildup of deposits or corrosion If a bypass and flushing
system is not included in the metering application, remove the meter housing cover and inspect the measuring chamber,
piston and associated parts for any buildup of deposits or corrosion Clean and flush parts with water or a suitable solvent that
will not adversely affect the plastic components
Calibration Check and Adjustments
All meters are accuracy tested with water at the factory using calibrated test equipment However, because the meter can
be used to measure a wide variety of liquids that may vary from water in viscosity, it is sometimes necessary to recalibrate a
meter under actual operating conditions with the liquid being metered
The following instructions are provided to assist in performing an on-site calibration check and adjustment
Accuracy Test
1 Place a test tank of calibrated volume at the output of the meter
2 Operate meter until test tank is filled to the appropriate calibrated level Since meter accuracy varies somewhat with
flow rate, make test run at the same flow rate used in actual operation
3 Record quantity indicated on applicable meter accessory device
4 Repeat run three times and average recorded indications
5 Perform the following calculation to determine the percent of accuracy of the meter
Example 1: In this example, the meter accessory is slow and must be speeded
up by a calibration correction
Example 2: In this example, the meter accessory is fast and must be slowed
down by a calibration correction
Industrial Meter, Oscillating Piston, Sizes 1/2" through 2" Model OP
Page 10 August 2013