LW series turbine flowmeterDetailed product description：

1、 Overview of LW series turbine flowmeter
The LW series turbine flowmeter has the characteristics of simple structure, lightweight, high accuracy, good reproducibility, sensitive response, and easy installation, maintenance, and use. It is widely used in industries such as petroleum, chemical, metallurgical, water supply, and papermaking, and is an ideal instrument for flow measurement and energy conservation. Suitable for media with viscosity less than 5 × 10-6m2/s at operating temperature. For liquids with viscosity greater than 5 × 10-6m2/s, the sensor should be calibrated with real liquid before use. This product has two series for measuring liquids and gases.

2、 Characteristics of LW series turbine flowmeter products
*Low pressure loss and impeller with anti-corrosion function;
*Adopting advanced ultra-low power single-chip microcomputer technology,
The whole machine has strong functions, low power consumption, and superior performance.
*Intelligent flow with non-linear accuracy compensation function
Quantity display. The accuracy of the correction formula is better than ± 0.02%
*The instrument coefficient can be set online by buttons and displayed on the LCD screen, which is intuitive, clear, and highly reliable
*Using EEPROM for power down protection of accumulated flow and instrument coefficient, with a protection time greater than 10 years
*Using high-performance MCU central processing unit to complete data acquisition, processing, display output, cumulative flow, instantaneous flow, etc
Convenient human-machine interface implementation with screen display, data transmission in standard 485 format.
*Adopting fully cemented carbide (tungsten carbide) shielded cantilever beam structure bearings, integrating rotating bearings and pressure bearings into one
The body greatly improves the bearing life and can work in media with a small amount of sediment and dirt.
*Adopting 1Cr18Ni9Ti all stainless steel structure (2Cr13 for turbine), it has good anti-corrosion performance.
*Easy to repair, with a self rectifying structure, small and lightweight, simple structure, can be assembled and disassembled in a short time,
Internal cleaning is simple.
*Has strong resistance to magnetic interference and vibration, reliable performance, and long lifespan
*Low lower limit flow rate, wide measurement range
*On site display LCD screen has clear and intuitive display, low power consumption, and can run continuously for more than 5 years with 3V lithium battery power supply
*Corrosion resistant, suitable for acidic and alkaline solutions

3、 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 measurement liquid: -20 ℃~120 ℃
Measurement gas: -20 ℃~80 ℃
Atmospheric pressure ranging from 86KPa to 106KPa
Nominal pressure 1.6 Mpa, 2.5 Mpa, 6.4 Mpa, 25 Mpa
Explosion proof grade ExdIIBT4
Connection methods include threaded connection, flange clamping, flange connection, plug-in connection, etc
Gas requirements for straight pipe section: upstream straight pipe section should be ≥ 10DN, 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 in m3, 4-digit LCD displays instantaneous flow rate in m3/h, battery level, frequency, and flow rate
(3) Temperature and pressure compensation type: A. Display standard instantaneous flow rate and standard cumulative flow rate 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
The transmission distance from the sensor to the display can reach 500m


4、 Selection Tips

When selecting a gas intelligent turbine flowmeter, the following parameters need to be determined in detail: pipeline diameter, measuring medium, working temperature,
Pressure (working state or standard state), installation method (pipeline or plug-in), power supply (12V, 24V or electric)
Pool power supply), output mode (4-20mA, pulse output or 485 communication), maximum flow rate (working state or standard state),
Whether explosion-proof is required or not, and whether the flange connection type should come with a matching flange