『How to Blow Into Peak Flow Meter: Avoid blocking the indicator slide or the exhaust vents with your fingers or tongue while exhaling.』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)
How to Blow Into a Peak Flow Meter: Avoid Blocking the Indicator Slide or Exhaust Vents
Quick Answer: If you are using a medical peak flow meter, keep your fingers and tongue away from the indicator slide and the exhaust vents during exhalation. Industrial flow meters from Silver Automation Instruments do not require blowing. For compressed air, natural gas, or steam measurement, install a thermal mass flow meter or a vortex flow meter in the pipeline.
The search phrase above appears in many medical device manuals. A peak flow meter for asthma measures how fast a person can exhale. If fingers block the indicator slide or the tongue covers the exhaust vents, the reading becomes unreliable. That problem belongs to medical clinics, not to process plants.
Medical Peak Flow Meter vs Industrial Flow Meter
Silver Automation Instruments does not sell medical peak flow meters. We supply flow meters for industrial pipelines. The measurement principle is different. You do not blow into an industrial meter. You pipe the gas or liquid through the sensor. For air and gas lines, we usually recommend a thermal mass flow meter or a vortex flow meter. Both instruments have local display and 4-20 mA HART output.
In practice, many engineers search for peak flow meter when they need a gas flow meter for compressed air, nitrogen, or natural gas. They find medical pages first. The words are similar but the application is not the same. An industrial peak flow meter measures the maximum flow rate in a pipe over a set time. It can also record total flow in kg/h or Nm³/h. We have seen this on customer sites many times.
Technical Details That Matter for Industrial Gas Flow
For dry compressed air or nitrogen, a thermal mass flow meter works well. We recommend a model with 4-20 mA HART output, accuracy of ±1.5 percent of reading, and a pressure rating up to 16 bar. Pipe sizes from DN15 to DN200 are common. The sensor does not block the flow path. You do not need to blow into it. The meter reads mass flow directly, so temperature and pressure changes do not ruin the measurement.
For steam or wet gas, a vortex flow meter is more suitable. It handles temperatures up to 350 °C and pressures up to 40 bar. We have supplied vortex flow meters for steam lines in food processing plants in Vietnam and Thailand. The meter body is stainless steel. The signal output can be pulse or 4-20 mA HART. You can add
A Real Customer Case
A beverage plant in Malaysia needed to measure compressed air flow to three packaging lines. Their old rotameter had no output signal and required daily cleaning. We installed a thermal mass flow meter on a DN50 pipe. The meter sent 4-20 mA HART to the plant control system. The plant now tracks air consumption per shift. The error was below 2 percent even during pressure swings. The maintenance team no longer cleans a glass tube every morning.
How to Specify a Gas Flow Meter From Us
Send us the gas type, pressure in bar, temperature in °C, pipe size in DN, and the expected flow range in kg/h or Nm³/h. Also tell us if you need ATEX Zone 1 approval, a local display, or a totalizer. Because every gas line is different, we confirm the model before quotation. We serve end users and distributors in Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
For a fast quotation, contact Silver Automation Instruments. Tel: +86-25-68650347, Whatsapp: +86-25-52155837, WeChat: +86 15365082610.
FAQ
Can I blow into an industrial flow meter to test it?
No. Blowing into an industrial meter can damage the sensor and contaminate the flow tube. Use a certified calibration bench or contact Silver Instruments for service.
What is the difference between a medical peak flow meter and an industrial flow meter?
A medical peak flow meter reads exhaled air in L/min. An industrial flow meter measures gas or liquid in a closed pipe. The sensors, accuracy classes, and output signals are different.
Which flow meter should I use for compressed air?
For dry compressed air, a thermal mass flow meter is a good choice. For wet air or air with oil vapor, use a vortex flow meter. An oval gear flow meter is not suitable for gas. We help you select based on air quality.
Do you supply ATEX approved gas flow meters?
Yes. We can supply flow meters for ATEX Zone 1 or Zone 2 areas. Specify the gas group and temperature class when you send your request.
What information is needed for a price quote?
Send gas or liquid type, pressure bar, temperature °C, pipe size DN, flow range, and signal output. Use Tel, Whatsapp, or WeChat above.
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