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RDM-UM-01089-EN-06 (September 2014)

Recordall® Industrial Meters

Nutating Disc Meter

User Manual

Summary of Contents for Recordall Series

Page 1: ...RDM UM 01089 EN 06 September 2014 Recordall Industrial Meters Nutating Disc Meter User Manual ...

Page 2: ...nciple 3 Unpacking and Inspection 4 Installation 4 General Operating Instructions 5 Manual Operation 5 Accessory Controlled Operation 5 Shutdown Instructions 5 Maintenance 6 Preventive Maintenance 6 Calibration Check and Adjustment 6 Servicing 8 Page 2 September 2014 RDM UM 01089 EN 06 ...

Page 3: ...ndicators and batch process controllers Operating Principle The metering principle known as positive displacement is based on the continuous filling and discharging of the measuring chamber Controlled clearances between the disc and the chamber provide precise measurement of each volume cycle As the disc nutates the center spindle rotates a magnet The movement of the magnet is sensed through the m...

Page 4: ...or freestanding accessory devices such as registers pulse transmitters and remote batch controllers will be provided as a supplement to this manual Please read the following instructions to become familiar with the requirements and the recommended procedures involved THE METER MUST BE OPERATED IN AN APPLICATION WITHIN THE SPECIFIED TEMPERATURE RANGE TO OBTAIN OPTIMUM ACCURACY AND PREVENT DAMAGE TO...

Page 5: ...s when a meter accessory provides a signal output to activate and or deactivate a valve or other flow control device VALVES CONTROLLING THE FLUID FLOW THROUGH THE METER SHOULD BE OPENED AND CLOSED SLOWLY TO PREVENT SHOCK LOADS THAT MAY DAMAGE THE METER MEASURING ELEMENT Manual Operation The following procedures are for use in simple metering applications where the flow of fluid is controlled by ha...

Page 6: ...llow these instructions to perform on site calibration checks and adjustments Accuracy Test 1 Place a test tank of known volume at the output of the meter 2 Fill the test tank to the calibrated level Make a test run at the same flow rate to be used in the actual operation 3 Record the quantity indicated on the accessory 4 Repeat the test three times and average the recorded results 5 Perform the f...

Page 7: ...ample Existing Change gear Ratio 42 Teeth 0 976 43 Teeth Meter Accuracy 95 Corrected Change gear Ratio 0 976 x 95 0 927 100 4 If change gear charts are available select a new change gear combination that matches the corrected change gear ratio If new gears are not available submit an order for corrective change gears to the nearest Badger Meter Representative or contact the Industrial Division of ...

Page 8: ...the correct seal Replacement of seal is always recommended d Assemble and tighten the bolts or retaining ring Alternative Disassembly Method for Service Loosen all the connection pieces slightly Turn the meter upside down putting gravity on your side This will help eliminate the possibility of the chamber assembly and or the screen component dropping during disassembly and causing damage Recalibra...

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