Categories
TURBINE GAS METER
Turbine gas meters are used in the gas-fired, chemical and furnace industries for the following gases:
- natural gas,
- city gas,
- propane,
- inert gases.
Advantages:
- removable meter cassette "RMC"
- lightweight, aluminum meter body
- optimized bearing design, including axial load compensation
- dirt protection and full oil system for flushing the oil system
- multi-stage flow conditioner
- multifunctional clutch with one latch
- multifunction indicator
- high frequency sensors with insulated thermal socket
The operating principle is based on the measurement of gas velocity. The flowing gas is accelerated and conditioned by the front straightening section of the gas meter. The straightening section conditions the gas flow by removing unwanted swirls, turbulence and asymmetry of the flow profile before the gas hits the turbine rotor. The dynamic forces of the fluid cause the turbine rotor to rotate. The turbine rotor is mounted on the axial shaft by means of high precision, low friction stainless steel ball bearings.
The turbine rotor has spiral blades and a known angle to the gas flow. The angular velocity of the turbine rotor is proportional to the gas velocity. The rotation of the turbine rotor and its main gear train (both mounted in the pressure housing) drive a 100% hermetic gearbox mounted externally. The gearbox allows for error adjustment. A replaceable, eight-digit mechanical counter is mounted on top of the gearbox. Low-frequency pulse transmitters are usually mounted in the counter.
G rating | Number of screws | Size | Overall dimensions from collar to collar | Height and depth | Total weight in kg Approximate values | ||
whole | mm | in mm | in mm | ||||
G 16 | 4 | 2" | 50 | 171 | 180 | 220 | 10 |
G 25 | 4 | 2" | 50 | 171 | 180 | 220 | 10 |
G 40 | 4 | 2" | 50 | 171 | 180 | 220 | 10 |
G 65 | 4 | 2" | 50 | 171 | 180 | 220 | 10 |
G 100 | 4/8 | 3" | 80 | 171 | 200 | 280 | 13 |
G 160T | 4/8 | 3" | 80 | 171 | 200 | 350 | 21 |
G 160 | 4/8 | 3" | 80 | 241 | 225 | 315 | 27 |
G250 | 8 | 4" | 100 | 241 | 225 | 400 | 30 |
G 400T | 8 | 4" | 100 | 241 | 225 | 510 | 43 |
G 400T | 8 | 6" | 150 | 241 | 285 | 510 | 50 |
G650T | 8 | 6" | 150 | 241 | 285 | 680 | 61 |
Other gas meter data:
Pipe size mm (inches) | G rating | Measurement range (m3/h) Qmin-Qmax | High frequency (Hz) | 2 x low frequency (pulse/m 3 ) | Total length (mm) | Nominal pressure | Body material |
50 (2") | G 40 G 65 G 100 | 8-65 10-100 8-160 | 200 - 400 | 10 10 1 | 150 | ANSI150 DIN PN10/16 | Aluminum GGG40 Carbon steel |
30 (3") | G 100 G 160 G250 G 400 | 8-160 13 – 250 20-400 32 – 650 | 200 - 300 | 1 1 1 | 240 | ANSI150 DIN PN10/16 | Aluminum GGG40 Carbon steel |
100 (4“) | G 160 G250 G 400 G650 | 13 – 250 20-400 32 – 650 50 - 1000 | 200 - 300 | 1 1 1 1 | 300 | ANSI150 DIN PN10/16 | Aluminum GGG40 Carbon steel |
Pipe size mm (inches) | G rating | Measurement range (m3/h) Qmin-Qmax | High frequency (Hz) | 2 x low frequency (pulse/m 3 ) | Total length (mm) | Nominal pressure | Body material |
50 (2") | G 40 G 65 G 100 | 8-65 10-100 8-160 | 200 - 400 | 10 10 1 | 150 | ANSI 150 DIN PN10/16 | Aluminum GGG40 Carbon steel |
30 (3") | G 100 G 160 G250 G 400 | 8-160 13 – 250 20-400 32 – 650 | 200 - 300 | 1 1 1 | 240 | ANSI150 DIN PN10/16 | Aluminum GGG40 Carbon steel |
100 (4“) | G 160 G250 G 400 G650 | 13 – 250 20 - 400 32 – 650 50 - 1000 | 200 - 300 | 1 1 1 1 | 300 | ANSI 150 DIN PN10/16 | Aluminum GGG40 Carbon steel |
