Displacer Level Gauge
The electric displacer level gauge is designed and manufactured based on the principle of buoyancy and Hooke’s law. The length of the displacer is equal to the measuring range. The measuring displacer is suspended on the measuring spring of the level gauge. When the measuring cylinder is immersed in the liquid to be measured, the cylinder is subject to the combined action of spring tension, buoyancy and gravity. A change in the level indicates a change in the level of the liquid. The displacement change is indicated by an indicator mounted on the outside of the body through a magnetic coupling method.
The electric displacer level gauge adopts full metal structure, the indicator is completely isolated from the measured medium, which can be displayed on the spot, and it can also output 4-20mADC two-wire signal, switch signal output, HART protocol.
Key Features
- Simple structure, stable and reliable, low maintenance workload;
- The liquid level indicator is completely isolated from the measured medium, which is safe and reliable;
- Working pressure from -0.1 ~ 42MPa;
- Working temperature from -160 ~ + 425℃
- Suitable for high viscosity measurement: <500MPa.s
- Housing material: Cast aluminum, SS304, SS316L
- Multiple signal output: 4-20mA, switch signal, HART protocol.
Specifications
| Measuring range: | 300-6000 mm (or according to user requirements) |
| Measurement accuracy: | 1.5, 2.0 |
| Buoy material: | 304, 316L, HC, Ti, etc.(Or customization) |
| Medium density: | ≥0.45g / cm3 |
| Interface measurement: | The difference between the density of the two media is ≥0.1g/cm3 |
| Medium temperature: | ≤80 ℃, ≤150 ℃, ≤250 ℃, ≤400 ℃ |
| Medium pressure: | Standard type ≤4.0 MPa
High pressure type ≤42MPa |
| Pressure Grade: | standard type: DN40-DN50 / PN4.0Mpa;
DN80-DN100 / PN1.6MPa High pressure type: DN40-DN50 / PN10.0MPa Special type: according to user requirements |
| Process connection: | flange DN50, G1.5 ”thread or according to user requirements |
| Output signal: | 4 ~ 20mADC (two-wire system) |
| Communication output: | HART, Modbus (RS485) |
| Alarm output: | upper and lower limit switch output
Capacity: up to 400VAC 0.05A, 24VDC 0.2A |
| Working power: | 15-35VDC, 220VAC
Lithium battery 3.6V7.5HA, 220VAC |
| Ambient temperature: | -20 ℃ ~ + 60 ℃ |
| Display case material: | standard: Cast aluminum, 304, 316L for customization |
| Protection level: | IP65, IP67 (IP68 negotiated supply) |
| Explosion-proof grade: | Intrinsically safe ExiaⅡCT6Ga
Flameproof ExdⅡCT6Gb |
How does a displacer level gauge measure liquid levels accurately?
The gauge operates on the buoyancy principle and Hooke’s law. The displacer’s movement in the liquid is transmitted through magnetic coupling to the external indicator, providing precise and reliable level readings.
Can it measure high-temperature or corrosive liquids?
Yes, with stainless steel or alloy construction, the gauge can operate in high-temperature liquids up to 400°C and handle corrosive chemicals, ensuring safe and durable performance in harsh industrial environments.
Is the gauge suitable for explosion-proof environments?
Yes, models with the M3 indicator are certified explosion-proof (ExdⅡCT6Gb) and intrinsically safe (ExiallCT6Ga), making them ideal for hazardous areas in chemical, oil, and gas industries.
What signal outputs are available for remote monitoring and process control?
The gauge supports 4-20mA two-wire output, switch signals, and HART protocol, allowing integration with DCS, PLC, and SCADA systems for real-time monitoring.
Can the gauge handle high-viscosity liquids?
Yes, it measures liquids with viscosities up to 500 mPa·s, including heavy oils, syrups, and slurry, without sacrificing accuracy or responsiveness.
Are custom OEM/ODM displacer level gauges available?
Yes, fully customizable solutions are available, including measurement ranges, materials, indicator types, and signal outputs, ensuring the gauge meets specific industrial process requirements.
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