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『Emerson Turbine Flow Meter: High-Accuracy Liquid Fuel Custody Transfer Probes』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
Emerson Turbine Flow Meter: High-Accuracy Liquid Fuel Custody Transfer Probes
Quick Answer: Emerson turbine meter probes offer reliable and repeatable measurement for liquid fuel custody transfer. Standard accuracy reaches plus minus 0.15 percent of reading, often better after field proving. They handle diesel, jet fuel, and light crude oil with K-factor outputs for flow computers. Silver Automation Instruments supplies these probes and provides full engineering support from our China hub to terminals in Vietnam, Indonesia, Saudi Arabia, and beyond.
How Turbine Probes Meet Custody Transfer Standards
In custody transfer, every pulse counts. Emerson turbine flow meters use a multi-blade rotor suspended in the fuel stream. The rotor speed is directly proportional to volumetric flow. A magnetic pickup generates a frequency output. The meter K-factor, typically quoted in pulses per liter or barrel, comes from a 5-point water calibration at the factory. National metrology institutes accept this data under API MPMS and OIML R117.
We have seen these probes in action at a diesel loading terminal in Hai Phong, Vietnam. The operator runs dual-pulse outputs to a flow computer that matches totalizer counts against a prover. Repeatability stays within 0.02 percent over a 10:1 turndown. That tight performance meets the strictest fiscal measurement requirements for taxing authorities.
Key Specifications That Engineers Look For
Sizes range from DN25 up to DN300 for large pipeline flows. Common pressure classes include ANSI 150, 300, and 600 with 316L stainless steel bodies. The integral preamplifier provides a raw sine wave or square-wave pulse. Most projects also need a temperature sensor. An integrated PT100 RTD compensates for thermal expansion and keeps the meter factor stable from minus 20 degree C to 80 degree C ambient and 120 degree C fluid temperature.
Communication is straightforward: 4-20 mA HART, raw pulse, or Modbus through a remote converter. Hazardous area certification covers ATEX Zone 1 and IECEx. Because fuel loading areas demand intrinsic safety, these probes work with Zener barriers or galvanic isolators. Here is the thing, many engineers skip the signal cabling details. But a crimped shielded twisted-pair cable and proper grounding make a big difference in pulse integrity on long runs.
When to Choose Turbine Instead of Coriolis
Turbine meters cost less per line size compared to Coriolis mass flow meters, especially above DN50. For clean, low-viscosity fuels like gasoline, kerosene, and ultra-low sulfur diesel, a turbine probe is often the fiscal meter of choice. However, if the fuel varies in density or contains solids, a Coriolis meter from Silver Instruments gives direct mass measurement and deaerating capability. We do both, so we can match the technology to your real operation condition without bias.
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Installation Tips from Field Experience
Flow conditioning is not optional. Even a single elbow upstream will skew the velocity profile. The standard straight-run requirement is 20D upstream and 5D downstream for unfiltered flow. A bundled tube straightener can reduce that to 10D. In practice, we always recommend a strainer or filter upstream to protect the rotor. A paint manufacturer in Malaysia learned this the hard way when a bit of pipe scale jammed their turbine meter during a batch loading.
Regular maintenance consists of rotor spin-down checks and K-factor verification against a master meter or pipe prover. Most operators schedule this annually. The rotor cartridge is field replaceable, so downtime stays low. We stock spare bearing kits and rotors in our Nanjing warehouse for fast shipment to Asia-Pacific and Middle East customers.
Get the Right Probe for Your Fuel Custody System
To specify a turbine meter, we need your fuel type, viscosity in cP, minimum and maximum flow rate in kg/h or barrels per day, pipe size (DN), pressure (bar), and temperature (degree C). Also mention your preferred output: pulse or 4-20 mA with HART. Send these details to Silver Automation Instruments and our engineers will provide a customized datasheet and quote within one working day. Phone: +86-25-68650347, Whatsapp: +86-25-52155837, WeChat: +86 15365082610. Visit flow-meter.com.au for more flow solutions.
Frequently Asked Questions
What is the typical accuracy of Emerson turbine meter probes?
The standard accuracy is plus minus 0.15 percent of reading for liquids. With a meter factor linearization and field proving, many systems achieve plus minus 0.1 percent or better over the calibrated range.
Can these probes measure heavy fuel oil?
They are best for clean, low-viscosity hydrocarbons above 0.3 cP. Heavy fuel oil with high viscosity and particulates will wear the rotor faster. For HFO, consider a positive displacement or Coriolis meter.
How often do I need to recalibrate a turbine flow meter?
Most weighing and measures authorities require annual verification. In practice, many terminals conduct quarterly in-situ proving with a compact prover to maintain measurement confidence.
What output signals do I get for a custody transfer system?
The basic output is a raw pulse signal. The K-factor allows the flow computer to convert frequency to total volume. Some probes include dual pulse outputs for redundancy. Also available: 4-20 mA with HART for secondary monitoring.
Does Silver Automation Instruments supply spare rotors and repair service?
Yes, we stock genuine spare parts and offer full depot repair in Nanjing. If your turbine meter probe needs bearing replacement or recalibration, we provide a fast turnaround for users in Australia, Thailand, Saudi Arabia, and Latin America.