GW430D Round Gear Flow Meter
Summary:
Gear flow meters, also known as PD flow meters (positive displacement flowmeters) or volumetric flow meters 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 measuring chamber. As the liquid flows through, it drives the gears to rotate, 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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Category:
Gear flow meters, also known as PD flow meters (positive displacement flowmeters) or volumetric flow meters 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 measuring chamber. As the liquid flows through, it drives the gears to rotate, 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 | GW430D Round Gear Flow Meter |
| Measurement 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 |
| Communication Methods | RS485, supports 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 (304 SS), 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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