Jacketed quartz tube level gauge

1、 Instrument Overview:

The jacketed quartz tube level gauge is developed using new technologies both domestically and internationally. It utilizes the principle of natural light refraction and reflection in liquids, with the help of red and green plates, to make the liquid phase display green and the gas phase display red during measurement. Due to the large contrast and clear indication of liquid and gas phase display, it is more advantageous for remote operation and night viewing.

2、 Measurement principle:

The quartz tube level gauge mainly consists of a special shaped quartz glass tube, a color filtered green glass sheet, a body, upper and lower valves, and a drain valve. The liquid level gauge and the flange on the container form a connector, which uses the optical principle of natural light refraction and reflection in the liquid to make the liquid phase appear green and the gas phase appear red with the help of color filter red green glass sheets. The red and green displays are clear and can be observed from a distance and at night.

The working principle is based on the differences in optical properties and density of different liquids. By using the optical principle of color level gauge refraction, a three color display interface is achieved, and a colored float floats between the interfaces of the two liquid levels, making the two interfaces distinct.

3、 Applicable occasions:

The jacketed quartz tube level gauge is developed using advanced technology both domestically and internationally. It is an upgraded product of ordinary glass plate level gauges and is widely used in various transparent liquid containers and boilers in industries such as petroleum, chemical, power, metallurgy, etc. It is suitable for measuring the level of oil products and chemical raw materials such as water, gasoline, liquefied gas, liquid ammonia, propane, propane, propylene, aromatic hydrocarbons, acids, etc. It is also applicable for interface measurement of two different medium densities.

4、 Performance characteristics:

1. Clear liquid and gas phase display, no blind spots, and good sealing performance;

2. High temperature and high pressure resistance;

3. Anti viscous, lightweight, long-lasting, and leak free;

4. Simple structure, easy installation and maintenance, corrosion-resistant, no need for power supply, explosion-proof.

5、 Technical indicators:

1. Specially made 99.99% SiO2 transparent quartz tube, with a deformation point of 1077 ℃ and a softening point of 1730 ℃.

2. The compression strength is 1170Kg/cm3, and the number of expansion systems is 5.5 × 10-7. After special processing, it has high temperature resistance, high pressure resistance, and excellent mechanical properties.

3. Work pressure: 1.6, 2.5, 4.0, 6.4, 10.0MPa

4. Working temperature:<>

5. Measurement range L: The measurement range is determined by the center distance: 300, 500, 800, 1100, 1400, 1700, 2000mm. Please specify the size for special specifications.

6. Heat tracing steam jacket: working pressure 0.6MPa, pipe size G1/2 "external thread.

7. Interface flange: Adopting the flange standard HG20592~20635-97 issued by the Ministry of Chemical Industry in 1997. The flange diameter is DN20, DN25. If the user needs to use other standards (such as GB, ANSI, etc.), it can be designed according to the user's needs. Automatic sealing pressure of steel ball: greater than 0.2MPa, weight 15~30kg.

6、 Technical parameters of transmission device:

1. Remote transmission device range: 0-15000mm: If multiple float level gauges of the same model are used simultaneously on the same device due to a large range, the remote transmission part can be used in series with multiple float level gauges of the same model. The remote transmission part can be used in series, but the usage must be specified when ordering.

2. Accuracy: ± 10mm

3. Return difference: ± 10mm

4. Output signal: 4-20m A.DC

5. Long distance transmission: 3km, laying cable with maximum capacitance and inductance not exceeding 0.04UF, 2mH

6. Power supply voltage: 24V. DC, 220V. AC50Hz (float level gauge with 24V DC stabilized power supply)

7. Environmental temperature: -40 to+60 ℃

8. Environmental vibration: frequency ≤ 25Hz, amplitude ≤ 0.05mm

9. Load impedance: 250 Ω

10. Explosion proof hose interface: M20 * 1.5 internal thread

11. Power consumption:<1.0W

12. Explosion proof type and explosion-proof mark: Passed the inspection of the Electrical and Instrumentation Explosion proof Quality Supervision and Inspection Center of the Ministry of Chemical Industry.

7、 Technical parameters of alarm:

1. Power supply voltage: 220V, AC, 50Hz

2. Output signal: Two normally open, two normally closed switch signals

3. Switch contact capacity: 220V, 2A

4. Working lifespan:>10 to the power of 5

5. Alarm accuracy: ± 5mm

6. Environmental temperature: -40 to+60 ℃

7. Environmental vibration: frequency ≤ 25Hz, amplitude ≤ 0.5mm

8. Explosion proof type and explosion-proof mark: Passed the inspection of the Electrical Instrument Explosion proof Quality Supervision and Inspection Center of the Ministry of Chemical Industry. Explosion proof mark dllBT4. Explosion proof certificate number: CE991009

9. Explosion proof hose interface for alarm switch: M20 * 1.5 internal thread.