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『Endress Hauser Gas Flow Meter Solutions: Thermal Mass and Ultrasonic Sizing for Biogas』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)
Endress Hauser Gas Flow Meter Solutions: Thermal Mass and Ultrasonic Sizing for Biogas
Quick Answer: Biogas flow measurement generally uses either thermal mass or ultrasonic meters. Thermal mass fits small pipe sizes from DN15 to DN200 and low pressure. Ultrasonic fits larger lines and wet gas. Send your pressure in bar, temperature in °C, pipe size DN, and flow range to Silver Automation Instruments for a direct sizing answer.
Why Biogas Flow Meter Sizing Is Not Standard
When you search for Endress Hauser gas flow meter solutions thermal mass and ultrasonic sizing for biogas, you are often comparing two meter types for a digester or landfill gas line. Biogas composition changes from hour to hour. Methane can range from 50 to 65 percent. Carbon dioxide makes up most of the rest. Moisture and trace hydrogen sulfide also affect meter choice.
A thermal mass meter gives direct mass flow. It does not need a separate temperature and pressure transmitter. An ultrasonic meter gives velocity and standard volume flow. Both styles appear in Endress Hauser gas flow meter solutions for biogas.
We have seen a customer in Malaysia run a DN80 biogas line at 1.2 bar and 38 °C. Flow varied from 20 to 180 kg/h. Thermal mass worked because the pipe was small and the gas was mostly dry.
Thermal Mass Meter Sizing for Biogas
Thermal mass meters measure heat loss from a heated sensor. They are sensitive to gas composition. For biogas you set the meter for the methane to carbon dioxide ratio. Most Silver Instruments thermal mass flow meters support gas selection through the keypad or Modbus.
A typical Silver Instruments thermal mass gas flow meter covers DN15 to DN200. Velocity range is 0.5 to 100 m/s. Pressure rating is up to 16 bar. Temperature rating is up to 150 °C. Accuracy is plus minus 1.5 percent of rate. Outputs include 4-20 mA HART and RS485 Modbus RTU.
If the gas is wet or contains sludge droplets, thermal mass will foul. In that case an ultrasonic meter is often a better choice.
Ultrasonic Meter Sizing for Biogas
Ultrasonic meters use transit time. They work well on larger pipes and can tolerate some moisture. A Silver Instruments inline ultrasonic gas flow meter covers DN50 to DN300. Pressure rating is up to 10 bar. Temperature rating is up to 80 °C. Accuracy is plus minus 1.0 percent of rate.
You need a clean signal path. Install a flow conditioner upstream if
Comparing Thermal Mass and Ultrasonic for Biogas
Thermal mass costs less for small DN. It is simple to install in an insertion or inline style. It does not like wet gas. Ultrasonic costs more but handles larger lines and wetter gas. It also gives a more stable reading when gas composition drifts.
If you compare an Endress Hauser gas flow meter solution with a Silver Instruments meter, the sizing method remains the same. You still need pressure, temperature, pipe size, and flow range. The difference is often price and delivery time.
Sizing Data You Need to Send
Send us your pressure (bar), temperature (°C), pipe size (DN), and flow range. Add methane content if you know it. We will return a model and price within 24 hours.
Contact Silver Automation Instruments at Tel: +86-25-68650347. You can also reach us on Whatsapp: +86-25-52155837 or WeChat: +86 15365082610.
Installation Notes and Hazardous Area Ratings
Biogas lines often sit in ATEX Zone 1. Both thermal mass and ultrasonic meters can be ordered with Ex d or Ex ia protection. Tell us the zone and gas group. We will supply a meter with the correct certificate.
Do not install a thermal mass meter directly after a drain valve. Condensate will damage the sensor. Use a drip leg and a filter if moisture is present.
FAQ
Can a thermal mass flow meter measure biogas with high moisture?
It is not recommended. Use an ultrasonic meter or add a dryer upstream.
What is the minimum flow rate for a biogas thermal mass meter?
With a DN15 inline meter you can measure down to about 0.5 m/s. For lower flow use a smaller line size or an insertion meter.
Do you have an ATEX certified biogas flow meter?
Yes. Silver Automation Instruments supplies Ex d and Ex ia versions for Zone 1 and Zone 2.
How do I size a biogas ultrasonic flow meter?
We need pipe diameter, pressure, temperature, and flow range. If the pipe is larger than DN300, ask us about an insertion type.
Can Silver Instruments replace an Endress Hauser biogas meter?
Yes. Send the existing model code and pipe data. We will match the process connection and outputs.