GW430 Round Gear Flow Meter
Summary:
Gear flowmeters, also known as PD flowmeters (positive displacement flowmeters) or volumetric flowmeters for short, are among the most accurate types of flow measurement instruments. A gear flowmeter operates by utilizing the pressure differential between the inlet and outlet of the meter’s measuring chamber to drive a pair of meshing gears. The two precisely matched gears are housed within a finely machined chamber, such that the root of each gear tooth forms a sealed volume cavity of equal size with the inner wall of the measuring chamber. As the liquid flows through, it causes the gears to rotate, thereby dividing the fluid into discrete, well-defined standard-volume segments. The total volume of liquid is determined by counting the number of times these volume cavities are sequentially and repeatedly filled and discharged.
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Gear flowmeters, also known as PD flowmeters (positive displacement flowmeters) or volumetric flowmeters for short, are among the most accurate types of flow measurement instruments. A gear flowmeter operates by utilizing the pressure differential between the inlet and outlet of the meter’s measuring chamber to drive a pair of meshing gears. The two precisely matched gears are housed within a finely machined chamber, such that the root of each gear tooth forms a sealed volume cavity of equal size with the inner wall of the measuring chamber. As the liquid flows through, it causes the gears to rotate, thereby dividing the fluid into discrete, well-defined standard-volume segments. The total volume of liquid is determined by counting the number of times these volume cavities are sequentially and repeatedly filled and discharged.
Detailed introduction
Product Features
- Capable of measuring various viscous media.
- Pulse output/analog output optional
- Low pressure drop, low noise
- High-pressure resistant, high- and low-temperature resistant
- High operational reliability of electronic components
- High accuracy is maintained even at the lower limit of the low-flow-rate measurement range.
- The output signal is temperature-independent over a wide temperature range.
- High precision and high repeatability
- Wide measurement range
- High-sensitivity measurement
- The preamplifier terminal is easy to use.
Technical Specifications
| Product Name | GW430 Round Gear Flow Meter |
| Measuring medium | Liquid |
| Implementation Standard | JB/T 9242-2015 General Technical Requirements for Liquid Positive-Displacement Flow Meters |
| Medium viscosity | 0.5~2×10^6 cP |
| Medium temperature | -40~80℃, high-temperature version 200℃ (customized) |
| Accuracy | ±0.5% of reading (within the 1:20 range), ±1% of reading (full scale); (all data are based on a 20 cSt viscosity fluid). |
| Repeatability | 0.1% |
| Ambient temperature | -40~85 ℃ |
| Pressure | Aluminum 50 bar Stainless steel, 100 bar (customizable up to 400 bar for high-pressure applications) |
| Operating voltage | 9-26VDC |
| Explosion-proof rating | ExdIIct6Gb |
| Protection Level | IP65 |
| Output signal | Analog signals (4–20 mA, 1–5 V, and 2–10 V), pulse frequency up to 5 kHz (max) |
| Communication Method | RS485 supports the standard Modbus-RTU protocol, HART, GPRS, and Bluetooth. |
| Electrical Interface | M20×1.5 (with metal explosion-proof connector) |
| Material | 316L stainless steel/PTFE |
| Ontology | 1.4305 (304SS), 1.4144 (316L), and AL |
| Gear | 304SS, 316L, and high-hardness alloy steel |
| Bearing | Rolling bearings or sliding bearings |
| Seal | FKM, NBR, and PTFE |
| flange | National standard (GB/T 9124.1-2019 and HG/T 20592-2010); American and Japanese standards available as options. |
| Attachment | Internal and external threaded transition fittings, Ermeto sanitary clamp fittings |
Select Parameters
| Model | Measurement range (l/h) | K-factor (P/L) | Pressure (bar) | Interface | Filter mesh diameter (μm) | ||
| SS304 | AL | Rolling bearing | Sliding bearing | ||||
| JGR1/4A | 0.3-20 | 16500 | 50 | 16 | G1/4 | 20 | 40 |
| JGR1/4 | 0.6-50 | 11200 | 50 | 16 | G1/4 | 20 | 40 |
| JGR3/8 | 5-250 | 4780 | 50 | 16 | G3/8 | 20 | 40 |
| JGR1/2 I | 10-500 | 3468 | 50 | 16 | G1/2 | 20 | 40 |
| JGR1/2 II | 20-1200 | 2780 | 50 | 16 | G1/2 | 20 | 40 |
| JGR3/4 | 200 - 3000 | 334 | 50 | 16 | G3/4 | 20 | 150 |
| JGR1 | 1000 - 12000 | 110 | 50 | 16 | G1 | 100 | 150 |
| JGR5/4 | 2,000 - 20,000 | 40 | 50 | 16 | G1-1/4 | 100 | 150 |
Industry Applications
| Fine Chemicals | Food industry | Petroleum and Petrochemical | Industrial Automation |
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