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gasoline flow meter DN50
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gasoline flow meter DN50
# Gasoline Flow Meter DN50: Complete Guide for Industrial Applications
## Quick Answer
For gasoline metering in DN50 (2-inch) pipe systems, we recommend Coriolis mass flow meters for custody transfer applications and oval gear flow meters for dispensing and filling. DN50 gasoline flow meters typically handle flow rates from 2 to 40 m³/h at pressures up to 16 bar. To get the right meter for your application, send us your pressure (bar), temperature (°C), pipe size (DN), and flow range.
## 1. Why DN50 Size Matters for Gasoline Flow Measurement
DN50 is a common pipe size in gasoline handling systems. You find it in:
- Truck loading and unloading terminals in Southeast Asia
- Fuel dispensing stations in Middle East oil depots
- Marine bunkering operations in Australian ports
- Petrochemical blending units in Latin American refineries
A DN50 gasoline flow meter must handle gasoline’s low viscosity (0.4–0.8 cP at 20°C). This rules out many turbine meters that need lubrication from the fluid. We have seen this problem many times on customer sites.
Last year a customer in Vietnam asked us to replace their turbine meters on gasoline loading arms. The meters wore out in 6 months because gasoline has no lubricity. We installed oval gear meters. Those are still running.
## 2. Types of DN50 Gasoline Flow Meters
### 2.1 Coriolis Mass Flow Meter (Best for Accuracy)
Coriolis meters measure mass flow directly. Gasoline density changes with temperature. At 15°C, gasoline density is about 740 kg/m³. At 35°C in a Middle East summer, it drops to 715 kg/m³. Volumetric meters cannot compensate for this unless you add a separate density measurement.
For our Coriolis mass flow meter DN50, key specificat
ions are:
- Accuracy: ±0.1% for liquids
- Flow range: 0.6 to 40 m³/h (for gasoline)
- Pressure rating: up to 100 bar
- Temperature range: -50°C to +200°C
- Output: 4-20 mA HART, Modbus RS485, pulse
- ATEX Zone 1 approval available
A paint manufacturer in Thailand uses our Coriolis meter to batch gasoline-based solvents. They need ±0.1% repeatability for blending recipes. A turbine meter gave them ±0.5% at best.
### 2.2 Oval Gear Flow Meter (Best for Price)
Oval gear meters are positive displacement meters. They trap a fixed volume of gasoline in each rotation. Two oval gears spin inside a chamber. The flow rate determines how fast they spin.
For our oval gear flow meter DN50, specifications include:
- Accuracy: ±0.5% for liquids above 0.5 cP
- Flow range: 0.6 to 20 m³/h (for gasoline)
- Maximum pressure: 40 bar
- Temperature: -20°C to +80°C
- Viscosity range: 0.5 to 5000 cP
- Output: pulse, 4-20 mA, mechanical counter
Most engineers skip this part: oval gear meters need a strainer upstream. Gasoline can carry pipe scale and debris. Without a strainer, gears jam. We include a Y-type strainer with every oval gear meter we ship to African fuel depots.
A customer in Nigeria runs gasoline bulk storage. They use 12 of our oval gear DN50 meters on their loading rack. One advantage: the meters work without external power in loss-of-power situations. The mechanical counter keeps recording.
### 2.3 Vortex Flow Meter (Not Recommended for Gasoline)
Some suppliers push vortex meters for gasoline. Here’s the thing: vortex meters need a minimum Reynolds number of 20,000 for stable operation. Gasoline’s viscosity is low, but at low flow rates the Reynolds number drops below 20,000. The meter becomes inaccurate.
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User:flowgauge66769Last Time:07/24/2026
