Introduction
Turbine flow meters are suitable for pure liquid flow measurement with an accuracy of up to 0.5% and can be customized to meet a variety of high temperature and high pressure or other special conditions.
Model: GLP-LW
MOQ: 1PCS
Payment: Bank transfer/ Wire transfer
Lead Time: 5-7 days
OEM/ODM: Available
◆ High accuracy: the accuracy of the liquid turbine flow meter can reach ±0.5% or higher, which ensures the accuracy of measurement under different working conditions and provides reliable data support for industrial production. As a high-performance industrial flow meter, it delivers stable and precise flow measurement.
◆ Easy maintenance: the structure of the turbine flow meter is simple, with low maintenance costs. Replacement of the rotor or sensor is very easy, greatly reducing the difficulty and cost of maintenance for flowmeters turbine applications.
◆ Good compatibility: the flow meter turbine can be adapted to a variety of liquid media, such as petroleum, chemical liquids, cleaning agents, etc., and is widely used in various industries for high-pressure liquid flow measurement. The turbine flow transmitter also ensures reliable signal output for monitoring systems.
◆ Fast speed response: the turbine flowmeter can measure the flow rate of the medium in real time and transmit the data instantly through a turbine flow transmitter to the control system, improving the efficiency and accuracy of industrial production. It can also be used for quantitative control.
| Parameter | Description |
| Diameter(mm) | DN4-DN200mm |
| Accuracy | ±1%R、±0.5%R、±0.2%R（special customize） |
| Range rate | 1:10；1:15；1:20 |
| Material | Body: 304SS/ 316L |
| Medium temp（℃） | -20℃~+150℃ |
| Environment | Temp: -10℃~+55℃, Relative humidity 5%~90%, air pressure 86~106KPa |
| Output | Sensor: pulse signal, low voltage≤0.8V high voltage≥8V Transmitter: two wire 4~20mADC |
| Voltage | Sensor: +12VDC、+24VDC Transmitter: +24VDC Display: with 3V lithium battery or +24VDC |
| Signal cable | STVPV3×0.3(three wire ), 2×0.3（two wire） |
| Distance | ≤1000m |
| Explosion proof | ExdIIBT6 (optional) |
| Protection | IP65 or higher |
◆ Widely used in water, refined oil, light crude oil, hydraulic oil, organic or inorganic fluids, etc.
◆ Water: including tap water, industrial water, wastewater, etc.
◆ Petroleum and petroleum products: e.g. crude oil, petroleum gas, petroleum products, fuels, etc.
◆ Chemicals: e.g. chemical solutions, acids, bases, solvents, etc.
◆ Food and beverages: e.g. drinking water, fruit juices, dairy products, alcohol, etc.
◆ Pharmaceuticals: e.g. potions, remedies, etc.
A liquid turbine flow meter is best suited to clean, low-viscosity liquids that can rotate the internal turbine freely without depositing solids on the rotor or bearings. Its fast response and high measurement accuracy make turbine technology particularly useful for liquid transfer, batching, equipment monitoring and process control.
The Gallop GLP-LW series is available from DN4 to DN200 with stainless steel 304 or 316L body options. Depending on the configuration, measurement signals can be supplied as pulse output or two-wire 4-20mA output, allowing the meter to work with totalizers, PLCs and industrial control systems.
Fluid condition is one of the most important factors when selecting a turbine flow meter. The meter performs best when the liquid is sufficiently clean and has suitable viscosity and lubricating characteristics.
| Fluid / Application | Suitability | Selection Consideration |
|---|---|---|
| Clean Water | Suitable | Confirm pipe size, flow range and pressure. |
| Industrial Process Water | Suitable when clean | Filtration may be required if solids are present. |
| Diesel and Refined Fuel | Suitable for compatible clean fuels | Confirm viscosity, temperature and hazardous-area requirements. |
| Light Oil | Application dependent | Viscosity should be checked before selection. |
| Solvents | Application dependent | Confirm compatibility with body, seals and internal components. |
| High-Viscosity Liquids | Generally not preferred | High viscosity increases rotor resistance and can affect measurement. |
| Liquids with Solids or Fibers | Not recommended | Particles can damage or obstruct the rotor and bearings. |
| Untreated Wastewater | Generally not recommended | An electromagnetic or other non-obstructive measurement technology is usually more appropriate. |
When liquid passes through the flow meter body, it drives a precision turbine rotor. Rotor speed changes with the velocity of the liquid. A pickup sensor detects the movement of the rotor and converts it into an electrical frequency or pulse signal related to volumetric flow.
For transmitter versions, the measured signal can also be converted into a standard 4-20mA output for connection to industrial automation systems.
This measurement principle provides several practical advantages:
Fast response to changes in liquid flow
Good repeatability under stable operating conditions
Suitable for totalization and batch control
Pulse output for high-resolution flow monitoring
4-20mA transmitter option for PLC and process-control integration
A turbine flow meter should be selected according to the actual operating flow range rather than pipe diameter alone. An oversized meter may operate too close to the lower end of its measurement range, while an undersized meter can create excessive velocity and pressure loss.
Before selecting a GLP-LW turbine flow meter, confirm the following information:
Minimum, normal and maximum flow rate
Pipe diameter
Liquid name and composition
Liquid viscosity
Operating temperature
Operating and maximum pressure
Required measurement accuracy
Pipe connection standard
Required pulse or 4-20mA output
Power supply
Installation environment
For applications close to the lower flow limit, Gallop can help evaluate whether a smaller turbine meter size would provide better measurement performance.
The GLP-LW series provides different accuracy configurations depending on project requirements. Instead of automatically specifying the highest accuracy option, buyers should select an accuracy level that matches the actual control or measurement objective.
| Measurement Requirement | Typical Application | Selection Focus |
|---|---|---|
| General Process Monitoring | Cooling water, equipment supply, utility measurement | Stable measurement and reasonable cost |
| Process Control | Production lines, dosing and equipment control | Accuracy and repeatability |
| Precision Batching or Testing | Test stands, calibrated process systems | Higher accuracy configuration and calibration conditions |
The achievable performance also depends on proper meter sizing, fluid condition, installation and operating range. Accuracy should therefore be considered together with the complete process conditions.
Gallop turbine flow meters can be configured for different signal requirements. Selecting the correct output depends on how the flow information will be used.
Pulse output is useful when the control system needs flow totalization, batch counting or high-resolution volume measurement. It is commonly connected to a flow totalizer, counter or PLC high-speed input.
A 4-20mA turbine flow transmitter is suitable for continuous process monitoring and connection to PLC, DCS or other analog-input systems. The analog signal represents the configured flow range and can simplify integration into established industrial control systems.
When requesting a quotation, specify the required control system and input signal so that the appropriate transmitter configuration can be selected.
Proper installation is important because turbine meters depend on a stable liquid velocity profile through the rotor.
Install the meter in a fully filled pipeline.
Confirm that the flow direction matches the arrow on the meter body.
Avoid installation immediately downstream of pumps, partially open valves or fittings that create severe flow disturbance.
Provide suitable straight pipe sections according to the selected model and installation conditions.
Prevent air or gas pockets from passing through a liquid turbine meter.
Use upstream filtration when particles may enter the pipeline.
Do not use the meter as a structural support for the piping system.
Flush new pipelines before installing or commissioning the meter where construction debris may be present.
The internal rotor and bearings are precision moving components. Sand, welding slag, rust, fibers and other solid contaminants can increase friction, damage the rotor or change calibration performance.
For process lines where contamination is possible, an appropriate upstream strainer or filter can significantly reduce the risk of mechanical damage. The filter should be maintained regularly so that excessive pressure drop does not develop.
Viscosity directly affects the force required to rotate the turbine. As viscosity increases, rotor behavior can change, especially at low flow rates. For this reason, turbine flow meters should not be selected solely from pipe diameter and nominal flow.
For oil, chemical and specialty-liquid applications, provide the operating viscosity and temperature to Gallop before confirming the model. If the liquid is too viscous for reliable turbine measurement, another flow technology may provide better long-term performance.
The GLP-LW turbine flow meter is available with SS304 or SS316L body materials. Material selection should be based on chemical compatibility rather than price alone.
SS304: suitable for many clean-water and general industrial liquid applications.
SS316L: provides improved corrosion resistance and may be preferred for more demanding process liquids.
For corrosive chemicals or special process media, the compatibility of all wetted components, including seals and internal parts, should be checked before ordering.
Routine inspection helps maintain the repeatability and service life of a turbine flow meter. Maintenance frequency depends mainly on liquid cleanliness, operating time and process conditions.
Inspect filters and strainers for blockage.
Check whether flow readings have become unstable or significantly different from expected process values.
Inspect the rotor and internal components if contamination is suspected.
Check electrical wiring and signal connections.
Verify that the meter continues to operate within the specified flow range.
Recalibrate the meter when required by the plant quality or maintenance program.
A turbine meter is not the preferred technology for every liquid. Another measurement method should be considered when the process contains large quantities of suspended solids, fibers, heavy contamination or highly viscous liquids.
For conductive wastewater, slurry or solids-bearing process water, an electromagnetic flow meter may offer a more suitable unobstructed measuring principle. For applications where the pipe cannot be opened, a clamp-on ultrasonic flow meter may also be considered depending on the liquid and pipe conditions.
Beijing Gallop has supplied flow and level measurement instruments since 2005 and maintains its own R&D and instrument testing capabilities. This allows industrial buyers, equipment manufacturers and system integrators to obtain technical support in addition to the instrument itself.
GLP-LW turbine flow meters from DN4 to DN200
SS304 and SS316L material options
Pulse and two-wire 4-20mA output configurations
Multiple accuracy configurations for different applications
OEM and ODM support
ISO9001:2015 quality management system
CE-certified instrumentation
Technical assistance for application and model selection
Turbine flow meters perform best with clean, low-viscosity liquids. Clean water, refined fuels and compatible light process liquids are common applications. Fluid viscosity, temperature and material compatibility should be checked before selection.
A turbine meter is generally not the first choice for wastewater containing suspended solids, fibers or debris because contamination can interfere with the moving rotor. For conductive wastewater, an electromagnetic flow meter may be more suitable.
Yes. Gallop lists a two-wire 4-20mA transmitter configuration for the GLP-LW series. Pulse-output sensor versions are also available for applications such as totalization and batch control.
Select according to minimum, normal and maximum operating flow rather than matching pipe diameter automatically. Proper sizing helps keep the meter within its effective measurement range.
Yes. Increased viscosity changes the hydraulic forces acting on the rotor and can have a greater effect at lower flow rates. Provide actual fluid viscosity and operating temperature when requesting model selection.
Please provide the liquid, flow range, pipe size, operating pressure and temperature, viscosity, connection standard, required accuracy, output signal and power supply. Gallop can then recommend a more appropriate configuration.
Send Gallop your liquid properties, pipe size, minimum and maximum flow, pressure, temperature and required output signal. Our team can help determine a suitable turbine flow meter configuration for your process or equipment.
