lwq-d2 turbine flowmeter manual

Time: 2024-10-18
Equipment Configuration:lwq-d2 turbine flowmeter

The LWQ-D2 turbine flowmeter is a precision flow measurement instrument used to measure the flow rate of fluids in closed pipes.

Project Overview

LWQ-D2 turbine flowmeter manual

1. Overview

The LWQ-D2 turbine flowmeter is a precision flow measurement instrument used to measure the flow rate of fluids in closed pipes. Volume flow. It has the advantages of high precision, good repeatability, wide range ratio, small pressure loss, easy installation and maintenance, etc. It is used in petroleum, chemical industry, metallurgy, electric power, medicine, food and other industries.

2. Working principle

The LWQ-D2 turbine flowmeter is based on the moment of momentum theorem in fluid mechanics. That is, when the fluid flows through the sensor housing, it generates a driving torque on the turbine, which overcomes the After the friction torque, the turbine is pushed to rotate. Within a certain range, the rotation speed of the turbine is proportional to the flow rate of the fluid. The rotation of the turbine is transmitted to the sensor through magnetic coupling. The sensor converts the rotational speed signal into an electrical pulse signal and outputs it. Each pulse signal represents a certain flow value. By measuring the number of pulses generated per unit time, the volumetric flow rate of the fluid can be calculated.

3. Product Features

1. High repeatability: The advanced processing technology and high-quality components ensure the flow meter's high reliability and good repeatability. 2. Wide range ratio: The range ratio of a single flow meter can reach 10:1 or higher, which can meet the measurement needs of different flow ranges. 3. Low pressure loss: The fluid channel design is reasonable, the pressure loss is small, and energy is saved. 4. Multiple signal outputs: Optional pulse, analog, HART, RS485 and other signal output methods are available to facilitate integration with various control systems. 5. Easy installation and maintenance: Simple structure, convenient installation and disassembly, and low maintenance. 6. Explosion-proof performance: Explosion-proof products are optional, suitable for explosive hazardous locations.

4. Technical Parameters

The following table lists the main technical parameters of the LWQ-D2 turbine flowmeter. The specific values ​​may vary depending on the model and specifications. Please refer to The actual product nameplate shall prevail.

Parameter unit numerical measurement medium - liquid (clean, non-corrosive) Flow range m³/h 0.1~1000 (can be customized according to user needs) Accuracy grade % ±0.2, ±0.5 (optional) Repeatability % ≤±0.1 Working pressure MPa ≤1.6, 2.5, 4.0 (optional) Medium temperature ℃ -20~+80 (can be customized according to user needs) Ambient temperature ℃ -20~+55 Power supply voltage VDC 24 (optional other power supplies ) Output signal - pulse, 4~20mA, HART, RS485 (optional) Explosion-proof level - Exd II CT4 (optional) 5. Installation and use

5.2 Instructions for use

1 . Open the upstream valve of the flow meter and slowly open the downstream valve until the flow meter works normally.

2. Connect the corresponding instrument or control system according to the output signal type of the flow meter.

3. Adjust the flow control valve to make the flow meter work within the measurement range.

4. Perform regular maintenance on the flow meter, including cleaning the sensor, checking the sealing performance, etc., to ensure the long-term stable operation of the flow meter.

6. Common faults and troubleshooting methods

Possible causes of faults and troubleshooting methods No signal output 1. Sensor failure

2. Cable break

3. Instrument failure

1. Check or replace the sensor

2. Check or replace the cable

3. Check or repair the instrument. The signal is unstable 1. The fluid contains bubbles

2. Excessive vibration of the pipeline

3. Improper installation of the flow meter 1. Remove the gas in the pipeline

2. Install the device

3. Reinstall the flow meter and the measurement accuracy decreases 1. Fluid viscosity changes

2. Sensor wear

3. Flow meter is dirty 1. Recalibrate the flow meter

2 . Replace the sensor

3. Clean the flow meter 7. After-sales service

The company provides complete after-sales service for the LWQ-D2 turbine flow meter, including product consultation, technical support, and installation guidance. , troubleshooting, maintenance, etc. If you encounter any problems during use, please feel free to contact us.

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