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China, Chinese High Pressure Magnetic Level Gauge Stainless Steel Flat Plate Design for Cryogenic1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Meter for Liquid GasLiquid Level MeterMagnetic Level GaugeFlat Plate Magnetic Level Indicator
Yantai Oceanblue Refrigeration Engineering Co., Ltd.
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Product Description Magnetic Level Gauge (Flat Plate Type) for Ammonia SystemsThe flat plate magnetic level gauge is a reliable and safe device designed for continuous liquid level monitoring in ammonia refrigeration systems, industrial storage tanks, separators, and process vessels. This type of gauge consists of a measuring chamber (flat plate type liquid chamber), an internal float, a magnetic coupling system, an external indicator, and flanged connections. As the float inside the chamber moves up and down with the liquid level, the magnetic coupling transmits the movement to the outside indicator or flip plates, providing a clear and safe liquid level display.Materials and Corrosion ResistanceThe wetted parts of the magnetic level gauge are typically made of stainless steel such as SS304 or SS316, ensuring long-term durability under ammonia service. Sealing materials such as PTFE or Viton can be selected to provide enhanced resistance to ammonia and other refrigerants. The flat plate structure allows easy integration with vessels through standard flanges and is particularly suitable for large storage tanks or vertical installation spaces with limited room.Operating Conditions and Application RangeThis type of level gauge is designed for pressures ranging from atmospheric to medium and high pressure, depending on the selected model. It is widely used in low-temperature liquid ammonia storage tanks, separators, condensate return vessels, and other process applications. The operating temperature range depends on the chosen materials and seals, with common models suitable for conditions from ?40oC up to +200oC.Safety and ReliabilityCompared to conventional sight glass level gauges, the magnetic flat plate level gauge offers significant safety advantages. The external indicator is magnetically coupled with the internal float, meaning there is no direct contact between the operator and the medium. This design reduces leakage risk and ensures higher safety, especially when used with toxic or flammable media such as ammonia. The flat plate construction also provides excellent mechanical strength, impact resistance, and reliable sealing performance in high-pressure environments.Display and Remote MonitoringThe magnetic level gauge typically features a two-color flip plate display or external pointer, providing clear and direct visual indication of the liquid level. In addition, it can be equipped with limit switches, level relays, displacement sensors, or a 4-20 mA signal transmitter, enabling integration with DCS/PLC systems for remote monitoring and control. This flexibility makes it suitable for both on-site operation and fully automated monitoring systems.Installation and MaintenanceThe flat plate magnetic level gauge offers flexible installation options, including side mounting, bottom connection, or top mounting with flanges. Before installation, users should confirm key parameters such as medium density, operating pressure, temperature, and tank connection dimensions to ensure proper model selection. Due to its non-contact magnetic coupling design, maintenance requirements are relatively low. However, the float and wetted components should be inspected periodically to prevent fouling or mechanical wear, especially in ammonia systems. Regular inspection of seals and flange bolts is recommended to maintain long-term safety and reliability.Key Selection ConsiderationsWhen selecting a magnetic flat plate level gauge, the following factors should be taken into account:Type and density of the medium (ammonia, refrigerants, or other chemicals)Operating pressure and temperature rangeFlange standard and connection sizeRequired display accuracyNeed for electrical output signals or alarmsCorrosion resistance requirements (material selection)Compliance with relevant standards (GB, ASME, PED, etc.)For ammonia service, it is recommended to use models that have been specifically tested with ammonia and fitted with compatible sealing materials.Quality and ComplianceHigh-quality manufacturing and testing are essential for equipment used in ammonia refrigeration systems. Each magnetic level gauge should undergo material inspection, pressure strength testing, leakage testing, and functional testing prior to shipment. Complete inspection reports and factory certificates are provided to ensure compliance with industrial standards and safe operation in refrigeration environments.Application ExamplesThe flat plate magnetic level gauge is widely applied in ammonia refrigeration systems, including liquid ammonia storage tanks, liquid-gas separators, condenser return vessels, and other process tanks. It is also used in chemical plants, energy facilities, and the food cold chain industry where safe and reliable level monitoring is required. Its visual display combined with optional electrical outputs makes it suitable for both local operation and centralized control systems.Customization and ServiceDifferent materials, pressure ratings, and electrical options can be provided based on project requirements. Customized designs can also be made according to user-specified flange standards and installation space constraints. Yantai Oceanblue Refrigeration Engineering Co., Ltd. offers technical support including model selection, engineering consultation, factory testing, and after-sales service. As a professional manufacturer in China, we provide quality assurance, compliance documentation, and certificates to meet international procurement and project acceptance standards.
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