LWGY Stainless Steel Digital Turbine Flow Meter – Multi-Unit Display – For Pure Water, Oil & Clean Liquids (Pulse / 4-20mA / RS485)

Product Overview

The LWGY Series Stainless Steel Turbine Flow Meter is a high-precision mechanical flow measurement solution designed for clean, low-viscosity liquids.

Unlike electromagnetic flow meters that require conductive fluids, this turbine flow meter operates independently of liquid conductivity. Measurement is based on turbine rotational speed, making it ideal for:

• Purified water

• RO water

• Refined oil

• Light crude oil

• Diesel

• Alcohol

• Organic and inorganic chemical liquids

It is suitable for ultra-low conductivity liquids (≤ 5 µS/cm) and is not affected by conductivity variations.

⚠ Not recommended for sewage or liquids containing solid particles.

Key Features

Multi-Unit Digital Display

The integrated LCD supports a wide range of selectable engineering units.

Instantaneous Flow Units:

• m³/h, m³/min, m³/s

• L/h, L/min, L/s

• USG/h, USG/min, USG/s

• gal/h, gal/min, gal/s

• kg/h, kg/min, kg/s

• t/h, t/min, t/s

Totalized Flow Units:

• m³

• L

• USG (US Gallons)

• gal

• kg

• t

Mass units require density configuration.

High Measurement Accuracy

• Accuracy Class: ±0.5% or ±1.0%

• Stable repeatability

• Fast response time

• Suitable for industrial process control

Triple Signal Output

Standard configuration includes:

• 3-wire Pulse output

• 2-wire 4-20mA

• RS485 communication (Modbus protocol)

Compatible with PLC, SCADA, data loggers, and automation systems.

Dual Power System

• Built-in 3.6V lithium battery (independent field operation)

• External 24V DC power supply (required for 4-20mA or RS485 output)

Industrial-Grade Construction

• Full stainless steel body

• Corrosion-resistant

• IP65 protection rating

• Suitable for industrial indoor and outdoor installation

Technical Specifications

Measuring Medium
Clean liquids (pure water, refined oil, light crude oil, organic/inorganic liquids)

Nominal Diameter
DN4 – DN200 (approx. 1/8″ – 8″)

Accuracy
±0.5% / ±1.0%

Nominal Pressure Options
1.0 MPa
1.6 MPa
2.5 MPa
4.0 MPa
6.3 MPa
(Custom high-pressure available)

Medium Temperature
-20°C to 100°C (-4°F to 212°F)
High-temperature customization available

Ambient Temperature
-20°C to 60°C

Humidity Range
5% – 95% RH

Power Supply
3.6V lithium battery + 24V DC (dual mode)

Output Signals
Pulse / 4-20mA / RS485

Protection Grade
IP65

Body Material
Stainless Steel

Installation Requirements (Important)

To ensure measurement accuracy, follow these installation guidelines:

1. Full Pipe Requirement

The pipeline must remain completely full of liquid at all times.
Air pockets or partially filled pipes will cause inaccurate readings.

2. Correct Installation Position

Recommended:

• Install at the lowest point of the pipeline system

• Install on a vertical pipe with upward flow

Avoid:

• Installing at the highest point (air accumulation)

• Installing on vertical downward flow (may cause empty pipe conditions)

3. Straight Pipe Requirement

To stabilize flow profile:

• Minimum 10D straight pipe upstream

• Minimum 5D straight pipe downstream

(D = pipe diameter)

Typical Applications

• RO water systems

• Ultra-pure water monitoring

• Fuel transfer systems

• Chemical processing lines

• Industrial liquid batching

• Oil measurement systems

• Process control automation

Important Notes

• Not suitable for sewage or liquids containing solid particles

• Not suitable for high-viscosity fluids

• For mass measurement (kg / ton), density must be configured

• 24V DC supply required when using 4-20mA or RS485 output