GB/T 36989-2018 in English
VALIDMeasurement of liquid hydrocarbons by ultrasonic flow meters
- Issued on:2018-12-28
- Implemented on:2019-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
$476.00
《GB/T 36989-2018用超声流量计测量液态烃流量》由TC355（全国石油天然气标准化技术委员会）归口，TC355SC10（全国石油天然气标准化技术委员会油气计量及分析方法分会）执行，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
This standard specifies the complete technical system of multi-channel ultrasonic flowmeters using the time difference method, covering the full life cycle management requirements from measurement circuit configuration to diagnosis and maintenance. The key technical features include:
- Number of channels and velocity profile correction algorithm
- Reynolds number compensation technology (see Appendix B performance curve)
- Directional calibration for bidirectional flow measurement
Key parameter comparison table
| Technical indicators | API MPMS 5.8 | JJG1030-2007 | GB/T 36989 |
|---|---|---|---|
| Accuracy grade | 0.15 grade | 0.2/0.5 grade | 0.2 grade (trade grade) |
| Repeatability algorithm | Range method | Bessel formula | Dual-track parallel |
| Minimum back pressure requirement | Pb≥2Δp+1.25pe | - | Formula 4.2.1 |
Typical application case
Reconstruction of a refined oil metering system in a refinery: DN400 four-channel ultrasonic flowmeter was used to replace the traditional turbine flowmeter, and the measurement uncertainty of 0.3% was achieved through the following measures:
- Configure 19D upstream straight pipe section + Zanker flow conditioner
- Use Appendix E standard table method for online calibration
- Implement Appendix G volume tube pressure and temperature compensation
Technology evolution analysis
This standard marks the technological leap from mechanical instruments to acoustic measurement for liquid hydrocarbon measurement in my country:
- 1990s: Turbine/positive displacement flowmeters dominated, relying on mechanical components
- 2000s: Introduced single-channel ultrasonic technology, limited by flow sensitivity
- After 2010: Multi-channel + digital signal processing technology matured, promoting the formulation of this standard
Implementation suggestions
New projects:
- Give priority to instruments with self-diagnosis functionUltrasonic flowmeter (Chapter 9)
- Optimize the pulse response time setting according to Clause 7.4
Renovation project:
- Pulse hysteresis test for Appendix D analysis is required
- It is recommended to add a flow conditioner (Clause 5.2.3)
Loading PDF document...
Error loading PDF. Please make sure the file is valid and try again.
We also recommend
-
GB/T 9109.5-2025 in English
Dynamic measurement of petroleum and liquid petroleum products—Part 5:Calculation of oil quantities
2025-10-05 -
GB/T 20658-2006 in English
Crude petroleum and liquid petroleum products - Volumetric metering of viscous hydrocarbons
2006-12-15 -
GB/T 9109.1-2016 in English
Dynamic measurement of petroleum and liquid petroleum products- Part 1:General principls
2016-12-30 -
GB/T 34166-2017 in English
Measumement of natural gas flow by means of standard nozzle meters
2017-09-07
