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Faure Herman Flow Meter Technology: High-Accuracy Helical Turbine Meters for Custody Transfer
Quick Answer
Faure Herman helical turbine flow meters are designed for custody transfer of crude oil, refined fuels, and petrochemical liquids. Typical accuracy is ±0.15% of reading with repeatability better than ±0.02%. Silver Automation Instruments supplies comparable helical turbine meters in DN15 to DN300 sizes with pulse output, 4-20 mA HART, and ATEX Zone 1 approvals.
What Is Faure Herman Flow Meter Technology?
Faure Herman flow meter technology has a long track record in liquid flow measurement. The company developed helical turbine meters that use a single helicoid rotor instead of flat blades. The rotor shape spreads hydraulic load evenly. The result is low wear, stable calibration, and reduced pressure drop. This technology is now used in many oil and gas custody transfer systems around the world.
The meter body houses a precision machined measuring chamber. Liquid enters, rotates the helical rotor, and exits through a straight flow path. A magnetic pickup coil detects rotor movement. Each rotor pass creates a pulse. A flow computer converts the pulse count into a volume total.
How Helical Turbine Meters Work in Custody Transfer
Custody transfer means the fluid owner changes. The meter measurement is the basis for payment. A small error can create a large financial gap. Helical turbine meters reduce this risk because the rotor has a uniform helix geometry across the flow stream. Because the rotor has this uniform shape, the output stays linear over a wide flow range.
On a diesel loading skid, the meter sits downstream of a strainer and air eliminator. The strainer protects the rotor from particles. The air eliminator removes gas pockets. A PT100 temperature sensor is installed near the meter. A pressure transmitter sends line pressure to the flow computer. The flow computer corrects volume at line conditions to standard conditions.
Specifications That Matter for Fiscal Measurement
Most engineers check accuracy, linearity, repeatability, and pressure drop first. A Faure Herman helical turbine meter commonly delivers ±0.15% of reading over a 10:1 turndown. Some tight range models reach ±0.1% of reading. Repeatability is better than ±0.02% in clean liquid service. Linearity data is included with the calibration certificate.
Pipe sizes range from DN25 to DN300. Small DN15 meters are available for additive injection and pilot plants. Wetted materials include 316L stainless steel and carbon steel. Bearings are usually tungsten carbide for long life. The bearing choice depends on fluid lubricity and contamination level.
Output options cover pulse, 4-20 mA HART, and RS485 Modbus. Hazardous area approvals include ATEX Zone 1 and IECEx. A local display helps field operators during truck loading. A PT100 sensor is often installed for automatic temperature compensation.
Why Refiners and Terminals Choose Helical Turbine Meters
In a diesel terminal in Vietnam, an engineering team compared orifice plates and helical turbine meters for 18 loading arms. The turbine mete
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In Indonesia, a customer moved gasoil through a coastal transfer line. Viscosity was around 2 cP. Batch temperature changed between 28 °C and 45 °C. The helical turbine meter kept stable readings. The customer installed a strainer upstream and a back pressure valve downstream. This kept the line full and removed air bubbles. Most engineers skip this part until a meter fails a prover.
Silver Instruments Alternative and Support
Silver Automation Instruments supplies helical turbine flow meters for custody transfer and high accuracy process control. The range covers DN15 to DN300. Body materials include carbon steel and 316L stainless steel. Signal options include pulse, 4-20 mA HART, and RS485 Modbus. We also supply flow computers, PT100 sensors, and pressure transmitters.
Send us your pipe size (DN), fluid type, flow range in kg/h or m3/h, pressure in bar, and temperature in °C. We will recommend a meter model and prepare a quotation. Typical lead time is 2 to 4 weeks. We ship to Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
Reach Silver Instruments by phone at +86-25-68650347. WhatsApp is +86-25-52155837. WeChat is +86 15365082610.
FAQ: Faure Herman Helical Turbine Meters for Custody Transfer
1. What is the typical accuracy of a Faure Herman helical turbine flow meter?
Most custody transfer models achieve ±0.15% of reading over a 10:1 turndown. Some high precision models reach ±0.1% of reading over a reduced range. Repeatability is usually better than ±0.02%. Calibration certificates are supplied with each meter.
2. Can Silver Instruments supply a direct replacement for a Faure Herman meter?
In many cases yes. Share the original pipe size, flange rating, fluid type, and flow range. Our engineers compare the hydraulic profile, rotor geometry, and output signal. Send the nameplate data and we will issue a technical proposal.
3. What fluids are suitable for helical turbine meters?
Helical turbine meters work well with clean or lightly filtered liquid hydrocarbons. Diesel, jet fuel, gasoline, naphtha, condensate, and light crude oil are common. Viscosity up to about 100 cP is possible. Fluids with heavy solids or abrasive particles are not recommended.
4. What output signals are available?
Standard outputs are pulse, 4-20 mA HART, and RS485 Modbus. For custody transfer the pulse output normally connects to a flow computer. The 4-20 mA HART signal is useful for monitoring and diagnostics. A PT100 input can be integrated into the flow computer.
5. How do I get a quote for a custody transfer flow meter?
Send Silver Instruments your pipe size (DN), fluid type, flow range in m3/h, pressure in bar, and temperature in °C. Also state the hazardous area classification if known. We will respond with a model, technical data sheet, and price. Contact us by phone at +86-25-68650347 or WhatsApp at +86-25-52155837.
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