『80 Ml/Min Flow Meter Pipeline Assembly Guidelines』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
Quick Answer
Assembling an 80 ml/min flow meter into a pipeline demands rigid support, zero vibration, and short straight pipe runs. For low flows under 100 ml/min we recommend a micro Coriolis mass flow meter or a miniature oval gear meter from Silver Automation Instruments. Selecting DN2 or DN3 piping and eliminating backpressure surges is critical for accurate dosing and batching.
Why Proper Pipeline Assembly Matters for 80 ml/min Flow Meters
At 80 ml/min you are moving only 4.8 liters per hour. This is a trickle flow common in chemical injection, flavor dosing, and pilot plant reactors. A small misalignment or a tiny air pocket can shift readings by 5 percent or more. Most engineers skip the mechanical details and blame the meter. In practice we have seen on customer sites many times that the pipeline is the problem. The meter simply reports what the pipe delivers. If you bolt a DN2 micro Coriolis meter onto a vibrating frame the mass flow signal will look noisy and unusable. Because the meter tube itself is thin and sensitive any external energy couples directly into the measurement.
Recommended Flow Meter Types for 80 ml/min Liquid Flows
You need a meter that can resolve flow from zero to about 120 ml/min with a turndown of at least 50:1. Two technologies cover most applications. A micro Coriolis mass flow meter gives you mass flow, density, and temperature in one device. We supply the SIL-COR-MICRO series with DN2 and DN3 connections. It handles viscosity up to 2,000 cP and works well with aggressive chemicals because the wetted parts are 316L stainless steel or Hastelloy C. The second option is a miniature oval gear flow meter like the SIL-OVAL-MINI. This meter fits diesel additive skids, lubrication lines, and low pressure solvent measurement. It sticks to clean liquids with viscosity above 1 cP. Oval gear meters do not like solids and they need a 60 mesh strainer right before the inlet. So for dirty fluids stick with Coriolis.
Pipeline Assembly and Mounting Requirements
Start with the pipe material. Rigid stainless tubing is better than flexible plastic hose. Plastic expands with temperature and pulsates with every stroke of a dosing pump. That pulsation fools a Coriolis meter into reporting a higher flow. Use 6 mm or 1/4 inch OD stainless tubing with compression fittings for DN2 and DN3 meters. Mount the flow meter body on a solid steel bracket. Do not hang the meter on the tubing alone. The bracket should be bolted to a concrete wall or a heavy skid frame. Keep straight pipe runs to a minimum. For a micro Coriolis we recommend 5 times the pipe diameter upstream and 3 times downstream. That is only 15 mm upstream for a DN3 meter, but it blocks swirl from an upstream elbow. If the process has a piston or diaphragm pump install a pulsation dampener of the bladder type between the pump and the meter. Set the dampener pre-charge pressure to 80 percent of the operating pressure. Without a dampener you will see flow spikes that average out but ruin batching accuracy.
Avoiding Common Installation Mistakes
Last year a water treatment plant in Indonesia dosed flocculant at 60 ml/min using a peristaltic pump. The oval gear meter was mounted right after a sharp elbow. The meter read 20 percent low because the elbow generated asymmetric velocity profile and cavitation bubbles. Moving the meter 200 mm downstream fixed it. Here is the thing: tiny flows carry trapped air and dissolved gas easily. A vertical pipe section wit
Real World Applications and Configuration Examples
A food flavoring company in the Philippines uses a SIL-COR-MICRO DN2 to dose vanilla extract at 80 ml/min into a mixing vessel. The meter runs at 4 mA to 20 mA with HART output, connected to a PLC that controls a solenoid valve. The pipe is 6 mm stainless steel with Swagelok fittings, held by a C channel bracket. Process conditions are 1.5 bar, 30 degrees Celsius, and vanilla extract viscosity around 12 cP. Another example is a biodiesel pilot plant in South Africa injecting sodium methoxide catalyst at 50 to 90 ml/min. They use the SIL-OVAL-MINI because the fluid is oily and low pressure. The pipeline has a Y strainer 100 mesh right before the oval gear and a spring loaded check valve downstream to avoid reverse flow. The accuracy is within 0.5 percent of reading across the entire secondary line. Because the fluid contains methanol the seals are FFKM. Standard FKM would swell within a week.
For any new assembly, send us your fluid type, viscosity in cP, pressure in bar, temperature in degrees Celsius, and pipe size DN. We will propose a meter and a pipe spool drawing. Silver Automation Instruments ships pre configured flow meters with a calibration certificate traceable to ISO 17025.
FAQ: 80 ml/min Flow Meter Assembly
What pipe diameter should I use for an 80 ml/min flow meter? Use DN2 or DN3 tubing, which corresponds to 1/8 inch or 1/4 inch OD. Staying small keeps flow velocity high enough to scrub air bubbles. Avoid oversized pipes that allow slug flow.
Can I connect the meter with plastic tubing? You can, but rigid polymer tubing like PFA is better than soft PVC. If you must use flexible tubing, clamp it every 150 mm and keep the meter body on a bracket. Soft tubing transmits vibration and can kink near compression fittings.
What is the typical accuracy for an 80 ml/min process? With a micro Coriolis meter you can get plus or minus 0.2 percent of reading above 10 percent of full scale. A miniature oval gear meter delivers plus or minus 0.5 percent of reading if the liquid lubricity is good and the line stays full. Both meters come with a 5 point calibration at Silver Instruments.
Do I need straight run pipe before an oval gear meter? No, oval gear meters do not need flow conditioning. But you must install a strainer and avoid sudden flow pulses. Keep the pipe size matching the meter port to prevent jetting effects.
How do I remove air from the line before startup? Open the vent port on the flow meter block or crack a fitting downstream. Run liquid slowly until a clear stream escapes without bubbles. Then close the vent and let line pressure build. This simple step prevents the most common source of zero drift at 80 ml/min.
Need a specific quote? Email your fluid parameters to [email protected]. Include pressure in bar, temperature in degrees Celsius, pipe connection type, and your target flow range. We will reply within one working day with a data sheet and price.
Hot Product
Related AD
