Gas Ultrasonic Flow Meter
Gas Ultrasonic Flow Meter
The gas ultrasonic flow meter uses digital transit-time measurement algorithm and large dynamic automatic gain control, with 0.5% accuracy, turndown ratio up to 40:1, no pressure loss, and bidirectional metering. It is suitable for natural gas custody transfer and oil/gas field wellhead gas metering.
- Proprietary digital transit-time algorithm for stable and accurate flow, accuracy class 0.5
- Supports AGA8-92DC and SGERG-88 compressibility factor calculation
- Turndown ratio up to 1:40, bidirectional metering, no pressure loss
- Multi-path redundant design, intelligent self-diagnosis
- Integrated temperature and pressure acquisition for temperature/pressure compensation and actual/standard condition conversion
- Passed multiple electromagnetic compatibility immunity tests
Overview
Product Overview
The gas ultrasonic flow meter is manufactured in accordance with GB/T 18604-2014 "Measurement of Natural Gas Flow by Gas Ultrasonic Flow Meters" and other standards. It employs a digital time measurement algorithm combined with a large dynamic range automatic gain control system. It features high accuracy, high reliability, wide turndown ratio, no pressure loss, high pressure resistance, and long service life. It is suitable for oil/gas field wellhead gas production, natural gas custody transfer, and gas detection and metering in industries such as energy and environmental protection.
Measurement Principle
Based on the multi-path transit-time method: the time difference between ultrasonic beams propagating downstream and upstream is proportional to the flow velocity. Integrated temperature and pressure acquisition enables temperature and pressure compensation, and supports AGA8-92DC, SGERG-88 compressibility factor calculation and actual/standard condition flow conversion.
Specifications
| Applicable Medium | Natural gas, process gas, air |
| Nominal Diameter | DN50–DN300 |
| Accuracy Class | 0.5 / 1.0 / 1.5 Class |
| Number of Paths | Single / Dual / Triple / Quadruple |
| Turndown Ratio | 1:40 |
| Pressure Loss | None |
| Explosion-proof Grade | ExiaIIBT4 |
| Output Signal | Pulse / 4–20mA / RS485 |
| Compensation | Temperature and pressure compensation, operating/standard condition conversion |
| Applicable Standard | GB/T 18604-2014 |