Honeywell Elster USM QP Ultrasonic Flow Meter Display
Overview
The Honeywell Elster USM QP is an ultrasonic gas flow meter in the Elster USM series, designed for custody transfer and process measurement of natural gas. Ultrasonic flow metering measures gas flow by transmitting ultrasonic signals across the pipe and measuring transit time differences caused by the flowing gas. The USM series is widely used in gas transmission and distribution where high accuracy, wide rangeability and low maintenance are required.
The USM QP is complemented by Elster flow computers such as the enCore FC1 for complete metering station solutions in gas transmission networks. Ultrasonic meters reduce the need for extensive meter tube calibration compared with some traditional meters
Engineering and Design
In an ultrasonic flow meter, pairs of transducers are mounted in the meter body; each transducer alternately transmits and receives ultrasonic pulses, and the difference between upstream and downstream transit times is proportional to the gas velocity. The meter calculates volumetric flow from the measured velocity profile, and with pressure and temperature transmitters connected, the flow computer converts the reading to standard volume and energy values for fiscal metering.
The USM design has no moving parts in the gas stream, which gives excellent long-term stability and low maintenance. The meter is suitable for bi-directional measurement, has a wide dynamic range and is approved for custody transfer applications in gas transmission networks. The associated display and flow computer functions provide local indication and communication of flow data to the station control and metering systems.
The USM QP is complemented by Elster flow computers such as the enCore FC1 for complete metering station solutions in gas transmission networks. Meter verification and diagnostic capabilities reduce the need for physical inspection, and the wide dynamic range covers low night-time flows and peak demand periods with the same meter. The ultrasonic principle also suits retrofitting because the meter body replaces a spool piece in the line, and with the flow computer the station obtains complete AGA compliant flow calculation. Ultrasonic meters reduce the need for extensive meter tube calibration compared with some traditional meters. Because the ultrasonic principle measures the gas velocity across the pipe cross section, the meter provides accurate results over a wide range of flow velocities, including the low flows typical of night-time transmission operation. The associated verification diagnostics allow the operator to confirm meter performance while the line remains in service.
Key Features
- Ultrasonic transit time flow measurement
- No moving parts in the gas stream
- Custody transfer and process metering
- Bi-directional gas flow measurement
- Wide dynamic range and high accuracy
- Integration with flow computer and station systems
Applications
The USM QP is applied in natural gas transmission and distribution pipelines, custody transfer metering stations, city gate stations, gas processing and industrial gas measurement applications.
Specifications
| Type | ultrasonic gas flow meter |
| Principle | transit time ultrasonic measurement |
| Application | custody transfer and process gas metering |
| Maintenance | no moving parts, low maintenance |
| Communication | integration with flow computer |
| Family | Honeywell Elster USM series |
Why Seven Star LLC
Seven Star LLC supplies Honeywell Elster USM ultrasonic gas flow meters and related metering equipment for gas stations in Oman and the GCC. Because the USM QP display unit is typically ordered as a replacement or upgrade to an existing ultrasonic meter body already in service, we confirm compatibility with your specific meter model and firmware before shipment, since a display unit sourced for the wrong meter generation can fail to communicate correctly or show incompatible unit conventions. Our team verifies these details with your site engineers before your order is confirmed, so the replacement display integrates cleanly without requiring a broader meter recalibration.
For gas stations and fuel distribution facilities across the region running multiple ultrasonic meters, we also help plan display and spares coverage around scheduled meter maintenance, so a damaged or malfunctioning display does not interrupt custody transfer measurement while a replacement is sourced. Where your facility is evaluating whether a display repair or a full replacement makes more sense, we are glad to review the specific fault before recommending either path. Ultrasonic flow meters used at custody transfer points carry real financial weight, since the display is what operators and auditors read for the official metered volume, so a display showing unstable or questionable readings needs to be addressed quickly rather than left in service while a decision is deferred.
Reach out with your meter model, firmware version if known, and a description of the display issue you are seeing, and our team will confirm the correct replacement or repair path, a realistic delivery timeline, and any recalibration considerations before you commit to an order, so your custody transfer measurement stays defensible throughout the transition. We also keep a record of the configuration we supply for each site, which makes any future display replacement or troubleshooting significantly faster, since the correct settings are already documented rather than needing to be rediscovered from scratch by whoever handles the next issue, potentially years down the line and without the benefit of anyone’s institutional memory of how the original system was configured and why it was set up that way in the first place, saving real, meaningful time and avoiding repeated diagnostic work on the next site visit.
Request a Quote for Honeywell Elster USM QP Ultrasonic Flow Meter Display
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- Datasheet Elster Honeywell Elster USM QP Ultrasonic Flow Meter Display Datasheet Download
Elster product families listed here
The Elster flow meter on this page is the Q.Sonic plus, a multipath ultrasonic gas meter for custody transfer measurement, listed together with a USM display unit. Flow computers come from two device series. The enCore series is represented by the enCore FC1 and the enCore ZM1. The gas-net series is represented by the gas-net F1 flow computer and the gas-net D2, a data forwarding unit for the DSfG station interface used in German-standard gas metering systems.Where Elster gas metering equipment is used
Elster gas meters and flow computers work at transmission and distribution metering stations, city gate and pressure reduction stations, power plant and industrial fuel gas inlets, and gas storage sites. The flow computer converts measured volume to base conditions using pressure, temperature and gas quality data, records the fiscal archives and passes data to the SCADA system. Operators in the GCC meet this equipment mainly on fiscal and allocation metering skids.Ordering Elster meters and flow computers: what we need
For an ultrasonic meter: nominal size, pressure rating and flange standard, flow range, gas composition, operating pressure and temperature, the metrological approval required and the flow calibration expected. For a flow computer: device type, the serial number and software version of the existing unit, the I/O boards fitted, the meters and transmitters connected, the conversion and compressibility method (for example AGA 8) and the communication protocols. A photo of the type plate and the parameter printout shorten the check against the manufacturer's documentation considerably.Browse Elster products by category: Flow Computers, Flowmeters, Industrial Communications.
Fixed gas and flame detection takes up the largest share of our Honeywell listing: Searchline Excel open path detectors, Sensepoint XCD and XRL point detectors, the XNX transmitter and the FS24X Plus flame detector. Honeywell, which dates from 1906 and is headquartered in Charlotte, USA, also makes SmartLine pressure transmitters and VersaFlow flowmeters for process plants. Seven Star LLC is an independent supplier of Honeywell gas detectors, replacement sensors, transmitters and controller parts for sites in Oman and the GCC.Honeywell product families on this page
Open path infrared detection is represented by the Searchline Excel and the newer Searchline Excel Plus. Point detection includes the Sensepoint XCD in flammable and toxic versions, for example the SPXCDALMG1 hydrogen detector, the Sensepoint XRL and the XNX universal transmitter. The FS24X Plus is a triple infrared flame detector. Replacement cells such as the SR-X2V oxygen sensor and the SR-W-MP75C MICROpeL combustible sensor are also listed. Process instruments include SmartLine STG700 and STG800 gauge pressure transmitters, the STR82D remote seal transmitter and the VersaFlow Coriolis mass flow meter. Recorder consumables such as chart pens are also sourced.Where Honeywell detectors and transmitters are used
Gas and flame detectors guard wellheads, compressor stations, tank farms, loading bays, process units and utility buildings, and report to the fire and gas system. Open path units watch plant boundaries and long pipe racks. SmartLine transmitters and VersaFlow meters measure pressure and flow in refining, gas processing, chemicals and power.Ordering Honeywell gas detection parts: what we need
Send the full part number from the label, such as SPXCDALMG1 or 02104-N-XSSA, and the serial number. For gas detectors state the target gas and measuring span, housing material, cable entry thread, output (4-20 mA, relays, Modbus) and the approval required. For replacement sensors name the detector model they go into. For SmartLine transmitters send the complete model selection string.Browse Honeywell products by category: Fire & Gas Detector, Vibration, Flowmeters, Pressure Instrumentation, Temperature Instrumentation.
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