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Digital Flow Meter Nozzle: Sourcing Handheld Fleet Fuel Dosing Valve Systems
Quick Answer: For diesel, petrol, or biodiesel fleet refuelling, Silver Automation Instruments supplies digital flow meter nozzles and handheld dosing valve systems in DN15, DN20, and DN25 sizes. Typical accuracy is 0.5 percent of reading with pulse or 4-20 mA output. Send fuel type, pipe size, flow range in litres per minute, pressure in bar, and temperature in degrees Celsius to get a quote.
A digital flow meter nozzle replaces a standard fuel nozzle on a handheld dispensing line. It measures each litre while the operator fills a vehicle or machine tank. The display sits on the nozzle or on a short cable. The operator sees the batch total before the hose is disconnected. This nozzle meter setup works for service trucks, mining light vehicles, generator refuelling skids, and small fuel trailers.
Most engineers skip the full dispenser cabinet for these tasks. A handheld valve costs less and fits on a trailer or a flatbed truck. The digital meter gives better accountability than a mechanical register. Silver Instruments supplies complete nozzle meter kits with a control valve, digital display, battery pack, and calibration certificate.
Typical Specifications for Handheld Fleet Fuel Dosing Valves
Size options start at DN15 for low flow refuelling of motorbikes and small generators. DN20 suits most light vehicle fleets and small trucks. DN25 covers larger trucks and mining equipment with flow rates up to 120 litres per minute. Accuracy is plus or minus 0.5 percent of reading across the calibrated range. Repeatability is 0.2 percent. The meter body comes in aluminium for diesel or stainless steel for petrol and biodiesel blends. Seals can be NBR, Viton, or PTFE depending on fuel type.
Output options include a local LCD totaliser, a pulse output for a remote counter, and a 4-20 mA signal for a PLC or telemetry unit. Some fleets use an RS485 Modbus version to send batch data to a fuel management system. A reed switch pulse output works well where no external power is available. The display and electronics are battery powered with a typical life of 12 months.
Industries and Field Examples
We have seen these systems on mine sites in Western Australia and Papua New Guinea. A contractor in Queensland fitted 16 handheld diesel nozzles to its service trucks for light vehicle refuelling. Each operator enters a vehicle ID before dispensing. The pulse output logs litres to a small data logger. Fuel reconciliation errors dropped from 3 percent to under 0.5 percent in four months.
A fishing fleet operator in Chile uses DN20 digital nozzle meters on portable diesel tanks. The meters handle salt air because the body and fasteners are 316 stainless s
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Sizing and Selection
Send Silver Instruments five data points: fuel type, flow range in litres per minute, pressure in bar, temperature in degrees Celsius, and pipe size DN. The flow range matters more than pipe size alone. A DN20 meter works from 2 to 60 litres per minute. A DN25 meter works from 5 to 120 litres per minute. Below the minimum flow, accuracy drops. Above the maximum flow, pressure drop rises sharply.
For petrol or ethanol blends, specify stainless steel internals and Viton seals. For pure diesel, aluminium with NBR seals works fine and costs less. For biodiesel above B20, use stainless steel and PTFE seals. For offshore or marine deck use, request IP66 protection and 316 stainless steel body. If the area is classified, ask for an ATEX Zone 1 pulse output version. Silver Instruments can supply the nozzle meter without the valve if you already have a dispensing nozzle.
Frequently Asked Questions on Handheld Fleet Fuel Dosing Valve Systems
What flow meter nozzle size fits a standard truck fleet refuelling pump? DN20 covers most diesel light vehicles and small trucks. Use DN25 if flow exceeds 60 litres per minute.
Can one handheld fuel dosing valve handle petrol and diesel? Yes if you choose stainless steel body, Viton seals, and specify the calibration fluid. Do not use the same meter for both fuels without flushing because viscosity changes affect low flow accuracy.
Does the digital nozzle meter work without external power? Yes. The local display uses batteries. The pulse output is passive reed switch or open collector. No 24 VDC supply is required for basic batch total display.
Is the meter suitable for ATEX Zone 1? Silver Instruments offers an optionally certified version for Zone 1 gas atmospheres. Specify the gas group and temperature class when you request a quote.
How do I get a price for a handheld fleet fuel dosing valve system? Send your fuel type, flow range in litres per minute, pressure in bar, temperature in degrees Celsius, pipe size DN, and output signal. A Silver Instruments engineer will reply within one business day.
Send your fuel type, flow range in litres per minute, pressure in bar, temperature in degrees Celsius, pipe size DN, and required output to Silver Automation Instruments. Call +86-25-68650347. WhatsApp +86-25-52155837. WeChat +86 15365082610. We supply digital flow meter nozzles and handheld fleet fuel dosing valve systems to distributors and end users in Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
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