PVC plastic turbine flowmeterProduct Overview:

KH-LWGY display PVC turbine flowmeter is a precision flow measurement instrument that can be used to measure the flow rate and total amount of liquids when paired with corresponding flow accumulation instruments. Liquid turbine flow meters are widely used in measurement and control systems in fields such as petroleum, chemical, metallurgical, and scientific research. Liquid turbine flow meters equipped with sanitary fittings can be applied in the pharmaceutical industry.

The integrated liquid turbine flowmeter has an explosion-proof design and can display the total flow rate, instantaneous flow rate, and flow rate percentage. The battery adopts a long-lasting lithium battery, and the service life of a single function odometer battery can reach more than 5 years, while the service life of a multifunctional display meter battery can also reach more than 12 months.

The integrated meter head can display a wide range of flow units, including cubic meters, gallons, liters, standard cubic meters, standard liters, etc. It can set fixed pressure and temperature parameters to compensate for gases. In situations where pressure and temperature parameters do not change significantly, this instrument can be used for fixed compensation accumulation.

PVC plastic turbine flowmeterProduct features:

1. High precision, generally up to ± 1% R, ± 0.5% R, and high-precision models up to ± 0.2% R;

2. Good repeatability, short-term repeatability can reach 0.05%~0.2%. It is precisely because of its good repeatability that it can achieve * accuracy through regular calibration or online calibration that flow meters are preferred for trade settlement;

3. Equipped with three-point correction of instrument coefficients, intelligent compensation of instrument coefficient nonlinearity, and on-site correction capability;

4. Keep all valid data intact for 10 years after power failure;

5. Wide range, with a medium to large caliber of up to 1:20 and a small caliber of 1:10;

6. Compact and lightweight structure, easy installation and maintenance, and high circulation capacity;

7. Suitable for high voltage measurement, there is no need to open holes on the instrument body, making it easy to make high voltage instruments;

8. There are various types of sensors available, which can be designed according to the specific needs of users, such as low-temperature, bidirectional, downhole, mixed sand, etc

9. Can be made into an insertion type, suitable for measuring large diameters, with low pressure loss, low price, can be removed without interruption, and easy installation and maintenance;

Technical parameters:

Nominal diameter: Pipeline type: DN4～DN200

Insertion type: DN100～DN2000

Accuracy level: Pipeline type: ± 0.5 level, ± 1.0 level

Insertion type: ± 1.5 level, ± 2.5 level

Environmental temperature:- 20℃～50℃

Medium temperature: Measuring liquid:- 20℃～120℃

Measuring gases:- 20℃～80℃

Atmospheric pressure: 86KPa~106KPa

Nominal pressure: 1.6 Mpa, 2.5 Mpa, 6.4 Mpa, 25 Mpa

Explosion proof grade: ExdIIBT4

Connection methods: threaded connection, flange clamping, flange connection, plug-in, etc

Requirements for straight pipe section: Gas: The upstream straight pipe section should be ≥ 10DN, and the downstream straight pipe section should be ≥ 5DN

Liquid: The upstream straight pipe section should be ≥ 20DN, and the downstream straight pipe section should be ≥ 5DN

Insertion type: The upstream straight pipe section should be ≥ 20DS, and the downstream straight pipe section should be ≥ 7DS (DS is the measured inner diameter of the pipeline)

Display mode:

(1) Remote transmission display: pulse output, current output (with display instrument)

(2) On site display: 8-bit LCD displays cumulative flow rate, unit (m3); 4-digit LCD displays instantaneous flow rate, unit (m3/h), battery level, frequency, and flow rate

(3) Temperature and pressure compensation type:

A. Display standard instantaneous flow and standard cumulative flow

B. Display current pressure, temperature, battery voltage

Output function:

(1) Pulse output, p-p value determined by the power supply

(2) 4-20mA two-wire current output

(3) Unit volume pulse output and sensor raw pulse output

(4) Equipped with RS485 communication interface

Power supply:

（1）DC5～24V

(2) The standard 3V lithium battery installed inside the instrument panel can be used continuously for more than eight years

(3) Temperature pressure compensation type 3V lithium battery installed inside the instrument can be continuously used for more than four years

Transmission distance: The distance from the sensor to the display can reach 500m

Working principle:

The liquid turbine flowmeter uses a turbine for measurement. It first converts the flow rate into the rotational speed of the turbine, and then converts the rotational speed into an electrical signal proportional to the flow rate. This type of flowmeter is used to detect instantaneous flow and total cumulative flow, and its output signal is frequency, which is easy to digitize. The induction coil and magnet in the picture are fixed together on the housing. When the ferromagnetic turbine blades pass through the magnet, the magnetic resistance of the magnetic circuit changes, thereby generating an induction signal. The signal is amplified and shaped by an amplifier and sent to a counter or frequency meter to display the total accumulated flow rate. Simultaneously, the pulse frequency is converted from frequency to voltage to indicate instantaneous flow rate. The rotational speed of the impeller is proportional to the flow rate, and the rotational speed of the impeller is proportional to the total amount of flow. The output of the turbine flowmeter is a frequency modulated signal, which not only improves the anti-interference ability of the detection circuit, but also simplifies the flow detection system. Its range ratio can reach 10:1, and the accuracy is within ± 0.2%. The time constant of a turbine flowmeter with small inertia and size can reach 0.01 seconds.

Liquid turbine flow meters are widely used in petroleum, organic liquids, inorganic liquids, liquefied gas, natural gas, and low-temperature fluids.

The output signal of the turbine flowmeter is pulse, which is easy to digitize. The pressure loss of the turbine flowmeter is small, the blades are corrosion-resistant, and it can measure viscosity and corrosion.