Intelligent external liquid level gauge

1、 Technical explanation:

Liquid level and material level measurement is a common problem encountered in industry, and ultrasonic positioning technology has many advantages. It can not only perform fixed-point and continuous positioning, but also conveniently provide the signals required for telemetry or remote control. Compared with radioactive positioning technology, ultrasound technology does not require protection. Compared with laser ranging technology, it has the advantages of simplicity and economy. At the same time, ultrasound technology generally does not require moving parts, so it is relatively convenient to install and maintain. It can be widely used in many industries such as petroleum, mining, power plants, chemical plants, water treatment plants, sewage treatment stations, agricultural water use, environmental monitoring, food (brewing industry, beverage industry, additives, edible oil, dairy products), flood control and prevention, hydrological monitoring, open channels, spatial positioning, etc.

2、 Advantages Description:

Intelligent external liquid level gaugeAs a new type of liquid level measuring instrument, the external liquid level switch has irreplaceable advantages in practical applications, as the measuring point of the tank body does not need to be perforated and can be directly installed on the outside of the tank wall

1. Storage tanks that are not suitable for hot work operations due to high pressure, toxicity, radiation, flammability, and explosiveness, such as liquefied gas spherical tanks, propylene spherical tanks, liquid ammonia spherical tanks, and horizontal tanks, are not only safe to use but also greatly reduce installation, use, and maintenance costs.

2. For storage tanks with high purity requirements such as pharmaceuticals, food and alcohol production, opening holes or using other measurement methods that come into direct contact with the measured medium may result in contamination. Therefore, using a level gauge for non-contact measurement is an ideal choice.

3Intelligent external liquid level gaugeApplication on storage tanks that require continuous production and do not allow hot work with openings. This type of hot work opening requires parking or even production stoppage, and the cost is relatively high, so non-contact measurement is an ideal choice. Especially in recent years, the national safety supervision department has higher requirements for the safety of dangerous goods storage and transportation, requiring tank areas to install level gauges with different principles. At this time, level gauges are the ideal choice for safety renovation.

4. The measurement of mobile tank trucks in the dangerous goods storage and transportation industry has always been a difficult problem, and liquid level gauges are an ideal choice.

5. The difficulty of interface measurement and the inability to accurately measure two-phase flow interfaces have always been a major challenge in the metrology industry. We have overcome the problem of measuring interfaces with external liquid level gauges, which have the advantages of high accuracy and low cost.

3、 Technical indicators:

量程： 3M、 5M 、8M、10M 、15M、20M 、25M、30M

Accuracy: 0.1% (Tank wall thickness, unstable pressure and temperature may affect accuracy)

Display: LED (optional LCD) display resolution 1MM

Output (optional)

4-20mA (large load 350 Ω) RS485、 discrete signal

power supply

Power supply: DC 12-24V or AC220V

4、 Application areas:

☆ Pharmaceutical manufacturing industry

Control the liquid level of the reaction solution inside the pipeline storage tank, etc

☆ Petrochemical industry

Internal liquid level control of oil pipeline storage tanks, etc

☆ Food industry

Liquid level detection and monitoring engineering projects in brewing, beverage, milk production, storage tank pipelines, etc

☆ Used in conjunction with the control system

6、 Probe installation requirements:

1. For iron containers, the working end face of the probe can be coated with silicone grease and directly attached to the bottom of the container with a magnetic suction cup; If the container shell is made of glass or other materials, the probe can be glued and fixed with glue or fixed to the bottom of the container with a bracket. The probe point must be on the same straight line as the measured distance.

2. There are no obstructions such as coils directly above the probe;

3. Stay away from the bottom inlet of the tank to avoid the impact of severe liquid flow on the measurement;

4. Stay away from the position below the top of the tank and the liquid inlet to avoid the impact of the liquid inlet, which may cause severe fluctuations in the liquid level and affect the measurement;

5. Higher than the outlet or drain to avoid the long-term accumulation of dirt at the bottom of the tank affecting the measurement If the conditions are not met, measures should be taken to ensure regular removal of dirt from the bottom of the tank;

6. When the liquid level measuring head is installed by magnetic or welding/adhesive fixation, the installation surface size on the container wall should not be less than a circular surface of Ø 80, the surface roughness should reach 1.6, and the inclination should be less than 3 ° (except for bypass pipes).