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Biodiesel Flow Meter 100 L/h for Boiler Fuel Manuals and Reliable Monitoring
Quick Answer: For a biodiesel boiler fuel line running at 100 L/h, a positive displacement oval gear flow meter with PTFE or FKM seals is the most reliable choice. Silver Instruments supplies a DN15 oval gear meter with a 4-20 mA output, a local totalizer, and a full printed installation manual. This meter handles viscosities up to 1000 cP and maintains ±0.5% accuracy even with B100 biodiesel.
The manual is not just a piece of paper. It is the reference your boiler technician needs for wiring, calibration, and passing local inspection. A customer in Malaysia running a 2 t/h biodiesel steam boiler told us the manual saved them a full day of commissioning. What you get is a meter that reads stable at 100 L/h and does not drift after two weeks.
Why a Standard Diesel Meter Fails on Biodiesel
Biodiesel has a higher viscosity than petrodiesel and it attacks standard nitrile rubber. We have seen this on customer sites many times. In a biofuel boiler plant in Thailand last year, a cheap turbine meter clogged after three days. The B100 swelled the internal O-rings and the signal became erratic. A palm oil mill in Sumatra tried a plastic-bodied paddle wheel meter and the glycerin residue built up on the rotor. You cannot afford unplanned shutdown on a process steam boiler.
Silver Instruments Oval Gear Meter Set for 100 L/h
Silver Instruments recommends the OG series positive displacement flow meter for biodiesel boiler monitoring. For a 100 L/h flow, the DN15 size is the standard pick. The body is SS316 stainless steel. The oval gears come in high-performance PPS or aluminum. We can supply seals in Viton for B20 or PTFE for pure B100. The meter outputs a flow-proportional pulse signal plus a 4-20 mA analog loop. You can read both instantaneous rate in L/h and totalized volume on the mechanical counter or the optional LCD.
Every meter ships with a printed manual. The manual covers torque values for the flange bolts, wiring color codes for 24 V DC power, and the K-factor table. Because the K-factor is set for biodiesel with a typical density of 0.88 kg/L, you do not need to tweak it for boiler feed measurement. The manual also lists spare part numbers for the O-ring kit and a stainless steel strainer.
Straight Pipe and Filtration Are Not Optional
Most engineers skip this part, but here is the thing: oval gear meters need clean fluid and straight pipe. You need a 60-mesh Y-strainer installed right upstream of the meter. Biodiesel from storage tanks often carries glycerin sludge. That gunk will lock the gears if unfiltered. The manual states 5D upstream and 3D downstream straight pipe section. That means if your pipe is DN15, keep a 75 mm straight run before the meter inlet. Horizontal mounting is mandatory. The arrow on the body must point in the flow direction.
Output Integration with Boiler PLC and Burner Control
A typical biodiesel boiler uses a PLC to regulate fuel feed. The 4-20 mA signal from the oval gear meter ties directly i
Manual Content and Certifications That Inspectors Demand
During boiler annual inspection, the authorities want to see the flow meter certificate. Silver Instruments manual includes a 5-point calibration sheet traceable to national standards. For a biodiesel plant in Brazil, our manual helped the firm pass ANP compliance without re-test. If your installation is in a hazardous area, we can supply ATEX Zone 2 certification documents inside the same manual binder. The manual also shows the explosion-proof wiring diagram and earthing points.
FAQ on Biodiesel Flow Meter 100 L/h
Can this meter handle pure B100 biodiesel? Yes. The meters with PTFE seals and PPS gears are compatible with B100 up to 80 °C. Check the chemical compatibility chart in Section 8 of the manual. If your biodiesel has high methanol traces, we suggest the all-SS316 version with PEEK gears.
What output signals are available for boiler monitoring? The standard models offer 4-20 mA and frequency pulse. Modbus RS485 is an optional add-on. Most boiler controllers accept 4-20 mA for fuel flow input. The manual details how to scale the 4 mA point to 0 L/h and the 20 mA point to 150 L/h.
Do you include a calibration certificate? Every meter leaves our factory with a 5-point calibration performed on biodiesel equivalent oil. The certificate is stapled to the manual. Customers in Australia and Indonesia use this document for ISO 14001 energy tracking.
How do I clean the meter when glycerin blocks the gears? The manual recommends flushing with warm isopropyl alcohol or a solvent compatible with SS316. Do not use compressed air to blow through the meter. Remove the measuring chamber cover carefully per the step-by-step guide in Section 7. We keep spare gear kits in our Singapore warehouse if you damage the gears during cleaning.
What is the lead time and price for a DN15 biodiesel meter? Silver Instruments holds stock in Australia and a distribution hub in Singapore. A DN15 oval gear meter for 100 L/h biodiesel typically ships within 5 working days. Send us your required flow range, connection type, and whether you need the ATEX manual. Our team will reply with the price in AUD or USD and the PDF manual within the same day.
Get Your Flow Meter Manual and Quote Today
Email your biodiesel line details to us. Include your flow rate in L/h, pipe diameter, operating temperature, and whether you require B100 compatibility. We will send you the complete manual PDF, the calibration certificate sample, and a formal quotation for the right oval gear meter. For urgent boiler shutdowns, mention your deadline and we will arrange air freight from our Singapore stock.
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