Introduction of CNG Mass Flow Meter
Mass Flowmeter consist of Mass Flow Sensor and Mass Flow Transmitter. It does not measure the volume per unit time (e.g., cubic meters per second) passing through the device, but measures the mass per unit time (e.g., kilograms per second) flowing through the device. The result of volumetric meter varies with temperature, pressure, composition, etc., but mass Flowmeter does not have such problem.
Operating principle of CNG Mass Flow Meter
Mass flowmeter is designed according to Coriolis Effect. The inlet arm and the outlet arm vibrate with the same frequency as the overall vibration, but when there is mass flow the two vibrations are out of sync: the inlet arm is behind, the outlet arm is ahead. The two vibrations are shifted in phase with respect to each other, and the degree of phase-shift is a measure for the amount of mass that is flowing through the tubes.
Sealand CNG-015 mass Flow Meter
Sealand CNG-015 Compressed Natural Gas meters are specifically designed for the CNG fuel
dispensing industry to meet the challenges of measuring compressed natural gas for custody
transfer. With worldwide installations, the CNG-015 is the preferred meter of the leading CNG
dispensing equipment manufacturers.
Feartures:
*Reduced fill time with higher flow rate capacity
*Compact design with no moving parts, no special mounting and no flow conditioning required
*Fast delivery and global support
Pictures of CNG mass flow meter
2 kinds of mass flow transmitter, with & without display.
Application of CNG mass flow meter(CNG dispenser)
Specifications of CNG mass flow sensor
| Specifications of mass flow sensor |
| Gas accuracy | ±0.5% |
| Liquid accuracy | ±0.2% |
| Temp. accuracy | ±1°C |
| Loss of pressure | ≤0.2MPa |
| MWP | 25MPa |
| Temp. rating | -50°C~+200°C |
| Connector | Nut M32 x 1.5 |
| Ex-proof grade | Ex[ib]IIBT1~T6 Gb / Ex[ib]IICT1~T6 Gb |
Specifications of CNG mass flow transmitter
| Specifications of mass flow transmitter |
| Temp. rating | -20°C~+50°C |
| RH | ≤95%, not condensed |
| Atmospheric Pressure | 86~106 kPa |
| Operating voltage | AC220V/50Hz, DC24/50Hz |
| Communication port | RS485 Modbus RTU |
| Ex-proof grade | Exd[ib]IIBT4Gb |
Specifications of CNG mass flow meter
| Specifications of mass flow meter |
| Model No. | CNG-15 |
| Mass accuracy grade | 0.2 |
| Temperature accuracy | ±1°C |
| Zero stability | 0.009kg/min |
| Repeatability | 0.25% |
| Max. flowrate | 70kg/min |
| Nominal diameter | 15mm( 3/5 inch) |
| Fluid temperature | -200~200°C |
| Material of tube | Stainless steel 316L |
| Packing | 1set/carton or wooden case |
| Warranty | 2 years |
| Package size | 630*630*580mm |
| G.W. | 19.66kgs |
Dimension of mass CNG Flow Meter & transmitter
Production process of CNG mass flow meter
1. Bend vibrating tubes with bending machine
2. Smear the solder on the production line
3. Solder the tubes in the Vacuum brazing furnace
4. Wire the mass flowmeter (at the same production line of step 2)
5. Test for the 1st time
6. Burn-in: Mass flowmeter will be excercised for 15 days prior to being placed in service.
7. Test for the 2nd time (at the same production line of step 5)
8. Cover the tubes with housing & polish the surface (at the same production line of step 2)
9. Test for the 3rd time(final test; this test equipment is approved by China government, and is the
TEST STANDARD of mass flowmeter in China)
Bulk order of CNG mass flow meter
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