Automatic Gas Meter Proving System

3M NoBell Automatic Gas Meter Proving System
3M NoBell Automatic Gas Meter Proving System
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The NoBELL prover is a stand-alone unit, designed to test small rotary meters without the use of a bell or costly vacuum pumps. All calibration and setup data is stored on the provers computer for easy backup and data recovery. Operations are menu driven with a series of graphical screens that guide the operator step by step through the complete test. The software is installed on PC operating under Microsoft Windows®. A 24-bit A/D converter, capable of 1 part in 16777216 resolution is used in the pressure and temperature circuits. The software can be customized with the customer’s data format when communicating test data with the main server computer. This prover also features a Vacuum Leak Test and High Differential Alarm.
- Traceability to Recognized Standards
- Copper/Aluminum Valve Train prevents corrosion and rust accumulation
- Check Meter Correlation Feature
- Pressure sensing is accomplished via precision pressure transducers for accuracy and stability
- Temperature sensing is accomplished via precision thermistors for accuracy and stability

- Photo Eye Sensor
- Manual Start/Stop Thumb switch
- ID Drive Pulser
- Electronic Module Pulse Input Adapter
- Bar Code reader
- Sonix Meter Testing
- Modem® for Remote Access
- MTR-II Meter Shop Management Software designed to meet customer specifications
Meter Type Tested: - Rotary & Ultrasonic Meters (Imperial & Metric)
Test Medium: - Air at room temperature
Flow Rate: - 80 to 3000 CFH @ 10” WC Differential
Working Temperature Range: - 32°F to 140°F (0°C to 60°C)
Temperature Effect - Compensated
Pressure Effect: - Compensated
Humidity Effect: - Compensated Not Required
Humidity Range:   Up to 95% Non Condensing
Automatic Leak Test Cycle: - User selects sensitivity and duration of the leak test
Test Sequence: - Microprocessor controlled, User selectable
Test Results: - Displayed on LCD Touch Screen
  - (%Proof, %Accuracy, %Error, %Correction)
  - Accept or Reject Indication
  - Differential Pressure reading displayed during test
Power Input: - 120 VAC ±10%, 50/60 Hz, (Shop Supply)
Test Time: - Determined by Volume & Flow Rate of Meter Under Test
Air Supply: - 60 - 100 PSI (Clamp Arms)
Communication of Test Data: - RS485, RS232 or Networking (If Required)
Automatic Test Cycle: - Automatically Controls Blower Speed to Maintain Selected Flow Rate
  - Automatically Starts and Stops Test Cycle
Low Maintenance    
Mobile Test Stand    
Reference Meter: - 3M