1、 Purpose:

Diesel flowmeterLWGY-1 is composed of a matching display instrumentDiesel flowmeterSensors have the characteristics of high accuracy, good repeatability, long lifespan, and simple operation. It can be widely used in industries such as petroleum, chemical, metallurgy, and papermaking to measure the instantaneous flow rate and total volume of liquids.

2、 Characteristics:

◆ Low pressure loss, impeller has anti-corrosion function.
◆ It has high resistance to electromagnetic interference and vibration, reliable performance, and long working life.
Adopting advanced ultra-low power single-chip microcomputer technology, the whole machine has strong functions, low power consumption, and superior performance. Intelligent flow display with non-linear accuracy compensation function. The accuracy of the correction formula is better than ± 0.02%.
The instrument coefficient can be set online through buttons and displayed on an LCD screen, which is intuitive, clear, and highly reliable.
Adopting EEPROM for power down protection of accumulated flow and instrument coefficient. The protection period is greater than 10 years.

3、 Main technical parameters:

◆flowmeterSpecifications, basic parameters, and performance indicators (see Table 2)
Accuracy: Level 0.5, Level 1.0;
◆ Usage conditions:
1. Environmental temperature -20 ℃~50 ℃;
2. Relative temperature: 5% to 95%;
3. Temperature of the tested medium:- 20℃～120℃;
4. Atmospheric pressure: 86Kpa to 106Kpa;
5. Explosion proof grade: ib Ⅱ BT4
Signal transmission distance: The distance from the sensor to the display can reach 1000m.

4、 Instrument structure and installation method:See (Table 2), (Figure 1), (Figure 2), (Figure 3), (Figure 4)

1. The instrument installation adopts flange connection, threaded connection and clamping type;
2. The direction of liquid flow during installation should be consistent with the direction indicated by the arrow on the sensor housing, and the upstream straight pipe section should be ≥ 20DN, and the downstream straight pipe section should be ≥ 5DN (DN is the inner diameter of the pipeline).
3. Sensors should be kept away from external magnetic fields. If unavoidable, necessary measures should be taken;
4. In order to avoid affecting the normal transportation of liquids during maintenance, bypass pipelines should be installed outside the straight pipe sections at both ends of the sensor (as shown in Figure 4);
5. When installing sensors outdoors, please ensure that the amplifier plug is waterproofed;
6. The wiring of sensors and display instruments should be selected according to the power supply of the amplifier. Please refer to the relevant "user manual" for details.

Figure 1 Schematic diagram of LWGY-4-10 sensor structure and installation dimensions

Figure 2 Schematic diagram of LWGY-15-40 sensor structure and installation dimensions

Figure 3 Schematic diagram of LWGY-50-200 sensor structure and installation dimensions

Figure 4 Reasonable installation method

5、 Model and specification description:

For example: LWGY-50-BE： Indicating a diameter of 50mm, explosion-proof, clamp type turbine flow sensor;
LWGB-50: Refers to a turbine flow transmitter with a diameter of 50mm.

(Table 2)

Note: Conventional products with a diameter of DN4-25mm can withstand a pressure of 6.3MPa
DN32-200mm caliber conventional product pressure resistance 2.5MPa