Critical Technical Advantages
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Wet Gas Robust Design: Unlike standard ultrasonic meters that may fail when liquids are present, the DRU-S features a “wet gas robust” architecture. It utilizes high-performance titanium sensors that are resistant to the corrosive and erosive effects of produced water and hydrocarbons, ensuring continuous operation in non-dehydrated gas streams.
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Liquid Indication Diagnostic: A standout feature of the DRU-S is its unique ability to detect the presence of liquids in the gas stream. This diagnostic capability provides operators with real-time insight into process upsets or changes in well behavior, allowing for better management of separators and dehydration units.
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Extreme Turndown (≥ 100:1): In gas production, flow rates can fluctuate wildly as a well ages or during different production cycles. The DRU-S covers a range that would typically require changing multiple orifice plates, reducing manual labor and the risk of measurement gaps.
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Zero Pressure Drop: The full-bore design ensures that there is no restriction to the gas flow. This is critical for low-pressure wells where every millibar of pressure counts toward maintaining production and preventing the well from loading up with liquids.
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Atmospheric Pressure Operation: While many high-pressure ultrasonic meters struggle at low pressures, the DRU-S is capable of measuring from atmospheric pressure up to the full rating of the pipeline, providing flexibility across the entire lifecycle of a gas well.
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Remote Monitoring & Plug & Play: The device connects seamlessly to the SICK Monitoring Box. This enables remote diagnostics and condition-based maintenance, allowing engineers to verify meter health from the office and eliminate unnecessary site visits to remote well pads.
Detailed Technical Performance Matrix
| Specification | Technical Details and Ranges |
| Measured Variables | Gas velocity, gas volume, sound velocity, liquid indication |
| Measuring Range | ≥ 100 : 1 |
| Nominal Pipe Sizes | DN50 to DN200 (2″ to 8″) |
| Max. Operating Pressure | Up to 250 bar (ASME 1500) |
| Gas Temperature | -40 °C to +180 °C |
| Accuracy | Typically ±1.0% (uncalibrated) to ±0.5% (calibrated) |
| Sensor Material | High-grade Titanium |
| Connectivity | Modbus (RTU/TCP), Monitoring Box ready |
Primary Applications
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Wellhead Measurement: Tracking the production of individual gas wells where raw, wet gas is the norm.
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Gas-Lift Optimization: Measuring the high-pressure gas injected into oil wells to ensure optimal lift efficiency.
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Associated Gas Monitoring: Accurate tracking of the gas produced alongside oil in separators.
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Vapor Recovery Units (VRU): Monitoring the flow of low-pressure gases captured from storage tanks or treaters.
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Inlet Measurement: Providing flow data for raw gas entering dehydration or gas treatment plants.
