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Precision flow measurement for heavy-duty equipment – The OEM W3700150400009 Elliptic Gear Flowmeter is designed to deliver accurate, real-time monitoring of fuel, hydraulic oil, and lubricant consumption. With high tolerance to contaminants and stable repeatability, this flowmeter ensures optimal engine efficiency. For guaranteed compatibility and performance, always choose genuine Sinotruk Homan parts. The robust elliptic gear mechanism provides virtually pulse-free flow reading, ideal for fleet management and maintenance scheduling.
The W3700150400009 elliptic gear flowmeter operates on the positive displacement principle, delivering ±0.5% accuracy across a wide viscosity range. Unlike turbine meters, elliptic gears are less affected by fluid viscosity changes, making them ideal for diesel, engine oil, and hydraulic fluids. The meter’s stainless steel housing and hardened gears ensure long-term reliability in mobile and industrial applications.
Two precision-machined elliptic gears rotate with minimal clearance, creating fixed volume pulses. This design delivers high repeatability even at low flow rates.
Housing made of cast aluminum with epoxy coating, gears from hardened tool steel. The W3700150400009 withstands pressures up to 40 bar and temperatures from -20°C to +120°C.
Factory calibrated across 1‑200 L/min range. Suitable for fuel consumption monitoring and hydraulic system efficiency analysis.
| OEM Number | W3700150400009 |
| Product Name | Elliptic Gear Flowmeter |
| Brand | SINOTRUK Homan |
| Measuring Principle | Positive displacement – elliptic gear |
| Flow Range | 2 – 150 L/min (standard), 1 – 200 L/min (optional) |
| Accuracy | ±0.5% of reading (over 10% of max flow) |
| Repeatability | ±0.1% |
| Max Pressure | 40 bar (580 psi) |
| Viscosity Range | 1 – 1000 cP |
| Temperature Range | -20°C to +120°C |
| Output Signal | Hall effect sensor / NAMUR (2-wire), 0‑1000 Hz |
| Process Connections | G1″ BSPP or 1″ NPT female |
| Material | Aluminum housing, hardened steel gears, FKM seals |
| Protection Class | IP65 (with mating connector) |
The W3700150400009 elliptic gear flowmeter is built around a pair of precision-ground elliptic gears that mesh with minimal backlash. Each rotation displaces a fixed volume of fluid, generating a digital pulse output proportional to flow. The magnetic pickoff (Hall sensor) is completely isolated from the fluid, ensuring no leakage path. This design makes the meter ideal for measuring fuel consumption in heavy trucks and construction machinery, where vibration and temperature extremes are common.
The W3700150400009 is compatible with diesel, biodiesel, hydraulic oils, engine lubricants, and even light fuels. The FKM seals resist swelling and chemical attack, while the hardened gears maintain accuracy even when small particulates are present (filtration recommended above 100μm). SINOTRUK Homan tests each meter with traceable calibration oil, and a calibration certificate is included.
The W3700150400009 provides a standard NPN open-collector pulse output (0‑1000 Hz), compatible with most electronic control units (ECU), tachographs, and remote monitoring systems. The meter can be installed in any orientation, and the bi-directional measurement option is available for return-line metering. For CAN bus applications, the flowmeter can be paired with an external interface module (sold separately).
Follow these steps for correct installation of the W3700150400009: 1) Mount the meter with the arrow direction matching flow. 2) Use straight pipe runs (10× diameter upstream, 5× downstream) for best accuracy. 3) Install a strainer (100 mesh) upstream if fluid contains debris. 4) Connect pulse wires to a 5‑24V DC power source via a pull-up resistor (2.2kΩ). 5) Avoid overtightening the process connections; maximum torque 35 Nm. 6) After installation, purge air from the system by running fluid at low flow.
The W3700150400009 requires minimal maintenance. Annually inspect the electrical connector and housing for damage. If accuracy drifts, the meter can be re-calibrated by an authorized SINOTRUK Homan service center. Never disassemble the meter in the field – internal gear clearances are factory‑set. For extreme fluid contamination, a periodic cleaning flush with clean solvent (without disassembly) is recommended.
The W3700150400009 flowmeter is manufactured under ISO 9001:2015 and ISO 17025 calibration procedures. It complies with CE and RoHS directives. Each unit is wet-calibrated on a gravimetric test bench with traceability to national standards. The test report includes 10 calibration points covering the entire flow range. The meter also passes a 15-bar proof pressure test and a 48‑hour thermal cycling test from -20°C to +80°C.
A fleet of 350 long-haul trucks in Germany was equipped with the W3700150400009 for fuel monitoring. Over 18 months, the flowmeters showed less than 0.3% deviation from refueling records, enabling accurate fuel tax reporting and driver efficiency tracking. A mining company in Chile reported that using these flowmeters to monitor hydraulic oil consumption reduced unnecessary oil changes by 25%, saving thousands of liters annually.
Each W3700150400009 elliptic gear flowmeter is supplied in a custom foam-lined carton, including the meter, two BSPP adapters, NBR seals, and the calibration certificate. A laser-etched serial number and QR code are applied to the housing. Scanning the QR code directs to the SINOTRUK Homan verification portal, confirming authenticity. Beware of counterfeit meters with mismatched gear materials or missing serial numbers – always source from authorized distributors.
Summary: The SINOTRUK Homan Elliptic Gear Flowmeter (OEM W3700150400009) delivers accurate, durable flow measurement for fuel, oil, and hydraulic systems. Upgrade your fleet monitoring with this genuine OEM component, trusted by professionals worldwide.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
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