The Fluenta FGM 160 has been developed to measure flare gas in pipes
where pressure, a wide range of velocity and large pipe diameter
represent a challenge. Fluenta offers world – class flare gas meters
characterized by:
Fluenta’s FGM 160 has specially designed jigs for fast, economical and accurate mounting of transducer holders. These holders are welded onto the pipeline at an angle suitable for each different pipe size. The meter can either be delivered as a hot/cold tap version or with a prefabricated spool piece.
The Fluenta FGM 160 measures gas velocity based on the time–of–flight technique. The ultrasonic transducers are
mounted at an angle to the pipe. Both transducers transmit and receive pulses and the transit time is measured. When the gas is flowing in the pipe, the pulses travelling against the flow take longer to reach the opposite transducer than the pulse travelling with the flow. This time difference is used to calculate the velocity of the flowing medium.
| Field computer | |
|---|---|
| Power input: | +24 VDC (20 – 32 VDC or 110 – 240 VAC 50/60 Hz, safe area power supply optional) |
| Consumption: | 13 W maximum |
| Power / instrument cable : | Standard twisted pair: RFOU(i)2-3 x 2 x 0.75mm2 |
| Dimensions: | 460 x 280 x 250mm (H x W x D) |
| Weight: | 17 kg |
| Input signals: | Signal from transducers via std instrument cable |
| Temperature & Pressure: | 4-20 mA or HART interface |
| Output: | 3 x 4-20 mA analog output channels, with selectable parameters.
RS 422/485 Serial Port based on Modbus protocol |
| Optional output: | Additional 3 x 4-20 mA channels HART Pulse/frequency signal |
| Electrical classification: | Explosion proof Ex de (ia) II C T6 Integrated Barriers |
| Ingressive Protection: | IP 66 |
| System performance and characteristics | |
|---|---|
| Pipe size: | 6” and larger (smaller pipe sizes available on request) |
| Velocity range: | 0,03 – 100 m/s (0.1 – 328 ft/s) |
| Uncertainty at 95% confidence level (fully developed flow): |
±2,5 – 5% of measured value for Qv |
| Resolution: | 0.0008 m/s |
| Repeatability: | Better than 1% |
| Turndown rangeability: | 3330 : 1 |
| Operation temperature | -110 °C – +145 °C (transducers) -40 °C – +85 °C (electronics) -50 °C – +60 °C (ambient temp) |
| Operating pressure: | 0.8 – 10 Bar a |
| Design temperature: | -150 °C – +315 °C (transducers) |
| Design pressure: | 20 Bar a (transducers) |
