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Omega Flow Sensors: High-Accuracy Laboratory Liquid Supply Line Modules
Quick Answer: When engineers search for Omega Flow Sensors: High-Accuracy Laboratory Liquid Supply Line Modules, they usually need a low flow sensor that does not drift at 0.05 L/min. Laboratory liquid supply line modules need flow sensors that stay accurate at low flow, often from 0.01 L/min to 10 L/min. Silver Automation Instruments supplies Coriolis, electromagnetic, oval gear, and thermal mass flow meters for these lines. Send your flow range, tube size (DN), pressure in bar, temperature in °C, and fluid viscosity to get a specific model and price.
What to Check in a Laboratory Liquid Supply Line Module
DN10 and DN15 are common in lab supply modules. Some reagent lines use 1.6 mm or 2 mm inner diameter tubing. The flow sensor must not add too much pressure drop. If the sensor restricts the line, the pump curve shifts and the data becomes useless.
Here is the thing. Many lab modules look simple. The flow sensor is often the last component selected. We have seen this on customer sites many times. A customer in Vietnam replaced a plastic paddle wheel sensor with an oval gear meter on a 2 mm chemical dosing line. The repeatability improved from 3 percent to 0.5 percent. The original sensor was cheap but the readings drifted every afternoon when lab temperature changed.
Sensor Types That Fit Low Flow Liquid Lines
Coriolis mass flow meters work well for laboratory liquid supply modules that handle solvents, syrups, or oils. They measure mass flow directly in kg/h. A DN15 Coriolis meter from Silver Instruments can handle 0 to 600 kg/h with 0.2 percent accuracy for liquids. Because it has no moving parts, it handles viscous fluids up to 500 cP without recalibration.
Electromagnetic flow meters fit water based liquids and saline solutions. They need a minimum conductivity, usually above 5 µS/cm. In lab water supply lines, a DN10 electromagnetic meter gives a stable 4-20 mA signal even at 0.1 m/s flow velocity. Most engineers skip this part during the first selection. Then they find out the ultrapure water conductivity is below the meter threshold and the reading drops to zero.
Why Omega Flow Sensors Get Specified in Lab Modules
The search term Omega flow sensors high accuracy laboratory liquid supply line modules usually comes from lab managers or OEM builders. They need a small sensor that fits inside a supply module. Omega offers many low flow sensors with analog output. Silver Instruments does not sell Omega products. But we supply equivalent and custom flow meters for these same lab supply modules. If you need a second source or a more robust industrial version, our technical team can match the fitting, output, and flow range.
Parameters That Determine Price and Lead Time
Flow range matters first. A lab liquid supply module may run 0.02 to 2 L/min for reagents or 0.5 to 10 L/min for wash water. Tell us the normal and maximum flow. We need pressure in bar and temperature in °C. Many lab lines run at 1 to 3 bar and 20 to 35 °C. Some reactors run hot, up to 120 °C. Fluid viscosity in cP matters for oval gear and Coriolis meters. Tell us if the liquid has solids, because electromagnetic and thermal meters behave differently with particles.
A Practical Example from a Pilot Plant
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Output and Wiring in Laboratory Modules
Most lab supply modules use 4-20 mA for the PLC or data logger. Some use pulse output for totalizing. Silver Instruments flow meters can include 4-20 mA HART, pulse, and RS485 Modbus in one unit. State the output type when you send your request. If you need ATEX Zone 1 for solvent lines, we can confirm the certification for the model. Do not assume every small flow sensor is ATEX rated. It is often not.
Installation and Calibration on Lab Supply Lines
Mount the flow sensor away from the pump outlet. Allow 10 straight pipe diameters upstream and 5 diameters downstream if the sensor is an electromagnetic or ultrasonic type. Oval gear meters do not need straight pipe runs. That is why they are popular in compact lab supply modules.
Before first use, run the liquid at normal flow for 10 minutes. Vent the air. Air bubbles are the most common cause of unstable readings in small liquid lines. In practice, we see many lab flow sensors returned because of air, not because of electronic drift. A simple bubble trap before the meter fixes most of these issues.
Calibration for low flow liquid sensors should be done with the actual liquid or a fluid of similar viscosity. Water calibration does not always transfer to a syrup line. Silver Instruments can provide a five point calibration report with each meter if you request it.
FAQ: Omega Flow Sensors and Laboratory Liquid Supply Line Modules
Can Silver Instruments replace an Omega flow sensor in a lab module?
Yes. We match the flow range, line size, output signal, and fitting type. Send the existing sensor model or a photo with the pipe diameter.
What flow range do high accuracy laboratory liquid supply modules typically need?
Most run from 0.01 L/min to 10 L/min. Small reagent lines often need 0.02 to 1 L/min. Wash water lines may go up to 15 or 20 L/min.
Which flow meter type is best for low flow viscous liquids?
Oval gear and Coriolis meters. For 0.5 to 500 cP liquids, oval gear is cost effective. For mass flow data with density, choose Coriolis.
Do I need ATEX Zone 1 certification for a lab solvent supply line?
Only if the solvent vapor creates a hazardous area. Many lab lines are non hazardous, but a solvent storage room may need ATEX. Confirm with your site electrical classification.
What information do you need for a price?
Fluid name, flow range, tube size (DN), pressure in bar, temperature in °C, output signal, and hazardous area requirement. Send this to Silver Instruments by WhatsApp or phone.
Send us your pressure in bar, temperature in °C, pipe size (DN), and flow range. Tel: +86-25-68650347. WhatsApp: +86-25-52155837. WeChat: +86 15365082610.
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