Badger Meter Oscillating Piston Meter - Manual (Page 11)

Change Gear Corrections
If the accuracy test of a meter-accessory combination that incorporates change gears indicates that adjustment is required,
perform the following procedures
1 See the Parts List for the location of the calibrating change gears
2 Determine the number of teeth and the outside diameter of the existing change gears
NOTE: N The number of teeth and the outside diameter are stamped on each gear
3 Submit an order for corrective change gears to the nearest Badger Meter Representative or the Industrial Division of
Badger Meter, Inc Provide the following information when ordering:
• Meter Model, Size and Serial Number
• Accessory Device
• Unit of Measure or Pulse Rate/Unit of Measure
• Number of Teeth and Diameter of Existing
• Change Gears (Identify meter gear and register gear)
• Percent of Accuracy of Meter
Change Gear Replacement
No special procedures are required when replacing change gears However, take care to obtain full mesh of the gears When
installing a BRE, BRP or TR Register to a right-angle drive gear train, you can achieve proper gear mesh by observing or
marking the position of the change gears on the respective spindles at the time of removal and making the replacement in
the same position
TAKE CARE NOT TO BEND THE SPINDLES WHEN INSTALLING THE GEARS OR REASSEMBLING A GEAR DRIVEN
ACCESSORY TO THE METER.
Electronic Scaling Correction/Recalibration
If the test results indicate an adjustment is required where a meter-accessory combination incorporates an electronic
calibrating feature, see the instruction manual for that accessory for the procedure to change scale factor
Servicing
When periodic inspection or faulty operation of a meter indicates a need for servicing, refer to the following paragraphs for
instructions covering the removal, inspection and reassembly of the replaceable parts comprising a meter Use the exploded
views given in the meter's Parts List as an aid in locating, identifying and removing parts and assemblies If satisfactory repair
cannot be made, contact the nearest Badger Meter Representative or the Industrial Division of Badger Meter, Inc
Measuring Chamber
Instructions for removing, inspecting, and reassembling the parts contained within the measuring chamber are essentially the
same, regardless of the size or type of meter involved
1 Removal
a Shut off the fluid flow to the meter
b Place a bucket or pan under the meter and relieve the fluid pressure in the meter by uniformly loosening the wing
nuts on the cover (on 1/2" meters loosen the hinged, ring-clamp ) Fluid will spill out around the cover as pressure
is relieved
c Remove the wing nuts and housing bolts (ring-clamp on 1/2" meters) and carefully remove the meter cover
d Remove the control roller from the pin in the center of the housing cover and the piston and magnet assembly
from the measuring chamber
User Manual
Page 11 August 2013