『Infrared Flow Meter: High-Resolution Non-Contact Optical Sensors for High-Purity Micro-Fluid Systems』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)
Infrared Flow Meter: High Resolution Non Contact Optical Sensors for High Purity Micro Fluid Systems
Quick Answer
Silver Instruments supplies high resolution non contact optical sensors as infrared flow meters for high purity micro fluid systems. These sensors measure flow without contacting the process liquid and work well for dosing, injection, and small line monitoring from 0.05 mL/min to 200 L/h. Send us your pressure in bar, temperature in °C, pipe size in DN or inch, and flow range for a model and price quote.
Where Infrared Flow Meter Fits in High Purity Micro Fluid Systems
In high purity micro fluid systems, any contact sensor introduces a contamination risk. Infrared sensors use light to measure flow from outside a PTFE, PFA, or sapphire tube. The wetted path stays intact. There is no mechanical rotor and no pressure drop. We have seen customers in pharmaceutical and biotech plants choose this option because cleaning validation is simpler.
A water for injection skid in Malaysia replaced a small positive displacement meter with a Silver Instruments infrared flow meter. The old meter had to be removed every batch for cleaning. The infrared unit stayed in place for three months with no drift. The maintenance team only wiped the external lens once a week.
Model Selection and Typical Specifications
The standard SI-IFR-06 sensor works with 1/8 inch to 3/8 inch OD tubing. Flow range is 0.05 to 200 mL/min. Accuracy is ±1.0 percent of reading above 1 mL/min. Repeatability is ±0.2 percent. Process temperature rating is 5 to 80 °C. Fluid pressure rating is 10 bar. Output options include 4-20 mA HART and RS485 Modbus. An optional PT100 input corrects for temperature changes in low viscosity streams from 0.8 to 10 cP.
For a DN15 line on a chemical dosing skid, use the SI-IFR-15 model. It measures 2 to 200 L/h. The body material is 316L stainless steel with a sapphire optical window. It suits clean solvents, acids, and alkaline solutions with conductivity from 1 to 500 µS/cm. A paint manufacturer in Vietnam installed 12 units on resin and catalyst injection lines. These units run at 6 bar and 35 °C. The plant reports stable batch dosing without mechanical seals to replace.
If the installation sits in a solvent storage area, specify the ATEX Zone 1 transmitter housing. This option is common in Southeast Asia paint and fine chemical plants. We supply the same infrared flow meter with an Ex d enclosure and cable glands for Zone 1 gas atmospheres.
How to Select the Right Infrared Flow Meter
The first step is to define
_600x400.jpg)
But there is a limit. The fluid must have enough optical clarity for the selected infrared wavelength. Heavy slurries or very dark liquids above 5000 NTU may need a different meter. We often recommend a Coriolis mass flow meter or oval gear flow meter when the liquid is non transparent or when mass flow in kg/h is the primary output.
Installation Notes
Install the sensor in a straight run of 10 pipe diameters upstream and 5 downstream. In micro tubing, most engineers use a small flow conditioner or a straight coil. Keep the sensor away from direct sunlight or strong infrared sources. The sensor has no moving parts, but the lens needs a clean wipe if the external air contains oil mist. We have seen this on customer sites many times, especially in food enzyme rooms with high humidity.
FAQ
Can the infrared flow meter handle high purity water for injection?
Yes. The non contact sensor works with high purity water from 0.05 mL/min up to 200 mL/min on a 1/8 inch PFA tube. Wetted materials are PTFE, PFA, and sapphire glass. There is no metal contact and no dead leg.
What output options are available?
Standard output is 4-20 mA HART. Pulse and RS485 Modbus are optional. An optional PT100 input enables temperature compensation. The transmitter can display flow rate in mL/min, L/h, or kg/h when density is fixed.
Which model fits a DN15 chemical dosing line?
Use the SI-IFR-15. It covers 2 to 200 L/h with accuracy of ±1.0 percent of reading. The 316L stainless steel body with sapphire window suits clean solvents, acids, and alkaline solutions.
Does it work in ATEX Zone 1 areas?
Yes. Specify the ATEX Zone 1 housing option when you send your inquiry. The infrared flow meter then uses an Ex d transmitter enclosure and suitable cable glands for gas atmospheres.
What information do you need for a quote?
Send us your pressure in bar, temperature in °C, pipe size in DN or inch, flow range, fluid type, and output preference. Silver Instruments will reply with a model selection and price within one business day.
Contact Silver Automation Instruments. Tel: +86-25-68650347. Whatsapp: +86-25-52155837. WeChat: +86 15365082610. Visit flow-meter.com.au for more product datasheets.
Hot Product
Related AD
