Close this search box.

The Transus Instruments UIM-4F Duo Natural Gas Custody Transfer Ultrasonic Flowmeter

The Transus Instruments UIM-4F Duo Natural Gas Custody Transfer Ultrasonic Flowmeter
9 Apr 2019  |
The Transus Instruments UIM-4F Duo Natural Gas Custody Transfer Ultrasonic Flowmeter Uses Two Independent Fiscal Flow Measurements in a Single Meter Body for Enhanced Condition-Based Diagnostics and Maintenance.

The Transus Instruments UIM-4F Duo consists of two independent fiscal flow measurements in a single flowmeter body, enabling enhanced condition-based diagnostics in a space saving, compact package. Primary measurement is accomplished by a four-path system while an independent, concurrent three-path system provides secondary measurement for extensive diagnostic information using TIMCare™ software.

The primary flow measurement uses the highly accurate UIM-4F four path chordal configuration, meeting AGA Report No. 9 and OIML R137 (class 0.5) international standards for custody transfer metering. The secondary flow measurement uses the company’s UIM-3F three path chordal configuration, also highly accurate, and meeting AGA Report No. 9 standards.

Available in sizes of 8” and larger with flange ratings up to 900 pounds, this highly accurate fiscal flow measurement system provides continuous verification by use of the secondary measurement. It is a highly economical solution when a redundant measurement is required for monitoring and verification, allowing smaller skid sizes and lower installation costs.

Traditional arrangements use a secondary measurement with single or dual paths, often resulting in an overly sensitive system that can cause false indications of fouling or flow conditioner blockages. By using a three-path secondary measurement, which is less sensitive to slight profile changes, the UIM-4F Duo provides the diagnostics needed to detect potential issues without giving false alarms. The UIM-4F Duo path layouts are oriented at different chord locations eliminating common mode errors as both meters respond differently to profile changes.

Transus Instruments’ ultrasonic transducers are highly efficient, operating at very low transmitting voltage instead of the high voltage required by other ultrasonic flowmeters, allowing the UIM-4F Duo to be certified Intrinsically Safe by DEKRA. Intrinsic safety certification reduces wiring and installation costs while greatly simplifying field maintenance.

Transus Instruments is a manufacturer and supplier of next generation ultrasonic flowmeters and ultrasonic transducers. Transus Instruments’ UIM Series flowmeters use patented Broadband Continuous Wave© signal processing and high efficiency titanium transducers to provide reliable and precise flow measurement even in the most extreme applications. The UIM-4F has been tested to meet the international standards for custody transfer metering while the UIM-3/3 is designed for flare gas, shale and coal seam gas, landfill and biogas as well as process gases.

Share this article

This article is published by

Transus Instruments Pty Ltd was established in August 2012, as a fully independent Research and Development service provider. Transus Instruments has its headquarters in Hobart, Australia. The principals, and founding partners, are based in Australia,...

Related Articles