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Mass Flow Meter Gas: Precision Thermal Calibration Sourcing Portal
Quick Answer: Silver Automation Instruments supplies thermal mass flow meters for gas with ISO/IEC 17025 traceable calibration. Engineers can specify the gas type, flow range, pipe size, pressure, and temperature and receive a pre-calibrated meter with a factory certificate. Send your four key parameters and get a same-day quote with calibration scope included.
What a Thermal Mass Flow Meter Does for Gas Measurement
Inline and insertion thermal mass flow meters from Silver Instruments measure mass flow directly. The sensor pair consists of a PT100 reference probe and a heated velocity probe. Because the meter reads mass flow, you do not need separate pressure or temperature transmitters. Outputs are 4-20 mA HART, RS485 Modbus, or pulse. For hazardous gas installations, we supply ATEX Zone 1 and Zone 2 certified enclosures.
Pipe sizes start at DN15 and go up to DN300 for inline models. For large ducts or stacks, insertion probes with a hot-tap ball valve assembly let you install and retract the sensor without shutting down the line.
Calibration That Prevents Measurement Drift and Disputes
A generic factory curve cannot match real gas conditions. We calibrate each thermal mass flow meter on a NIST-traceable gas rig using air or nitrogen as the reference medium. For biogas, methane, or CO2, we apply firmware conversion factors and confirm the output against the reference. The calibration certificate lists the actual test data points, uncertainty, and the standards used.
Here is the thing. A water utility in Southeast Asia saw digester gas readings drift by almost 30 percent over six months. The original meter had a generic air calibration and no conversion for wet biogas. After replacing it with a Silver Instruments meter calibrated for real gas composition and humidity, the plant now gets readings stable within ±1.5 percent of rate. The calibration certificate helped the client pass an ISO 14001 audit without extra paperwork.
Four Data Points You Need to Send for a Quote
Most engineers skip this part, but it makes the difference between a meter that works and a meter that reports wrong numbers. Provide these four items and we can size and calibrate your meter accurately:
1. Gas type. Air, nitrogen, natural gas, CO2, argon, biogas, oxygen, or mixed gases.
2. Flow range. Minimum and maximum in kg/h or Nm³/h.
3. Operating pressure in bar and temperature in °C.
4. Pipe inner diameter or nominal size (DN or ASME).
Last year a customer in Vietnam needed to measure 0 to 200 kg/h of compressed air at 7 bar in a DN50 line. We recommended the SIT-600 inline meter with 4-20 mA HART, calibrated within five working days. The meter shipped with a calibration certificate and a quick-start wiring guide.
Industries Where Gas Mass Flow Meter
A biscuit factory in Australia installed 12 thermal flow meters on their packaging machines to track compressed air per shift. When a machine developed a leak, the meter data alerted the maintenance team before the next shift. The plant reduced compressed air waste by 18 percent in the first quarter. In practice, sub-metering often finds leaks that a bulk utility meter misses.
In the Middle East, oil and gas operators use insertion meters on flare headers and biogas digesters. Stainless steel wetted parts and a no-moving-parts design hold up against H2S and moisture. ATEX Zone 1 certified meters with flameproof enclosures are standard for these sites.
A pharma manufacturer in Brazil meters nitrogen flow to tablet coating drums. They selected an electropolished flow body with tri-clamp connections and a calibration certificate for nitrogen at 2 bar. Because the surface finish avoids dead legs, the meter meets their cleaning validation requirements.
How to Order and What to Expect
Standard inline meters ship within 3 working days after calibration. Insertion probes with hot-tap gear, custom ranges, or high-pressure options need 10 to 15 working days. We airfreight via DHL or FedEx to Australia, Southeast Asia, Latin America, Africa, and the Middle East. Each delivery includes the calibration certificate, wiring manual, and mounting hardware.
Send your enquiry to [email protected]. Mention your gas type, pressure, pipe size, flow range, and temperature. We will reply with a datasheet, calibration scope, and price in USD or EUR within a few hours.
FAQ
Can the same meter measure multiple gases? Yes. The firmware stores up to 10 gas conversion curves. Select the active gas via the local display or Modbus, and the meter applies the correct factor.
What straight run do I need? Typical requirement is 15D upstream and 5D downstream. We also offer built-in flow conditioners that reduce the upstream need to 5D for tight pipe layouts.
Is annual recalibration mandatory? In ISO 9001 or audited processes, yearly recalibration is recommended. Silver Instruments offers a recalibration service with a turnaround of 7 working days plus shipping.
Can the meter handle high-pressure gas lines? Standard inline meters cover up to 40 bar. For pressures up to 100 bar, we reinforce the sensor probe and use thicker tube walls. Specify your operating pressure at quotation stage.
Do you supply meters for oxygen service? Yes. We clean and degrease wetted parts per ASTM G93 for oxygen service and provide a cleanliness certificate alongside the calibration document.
Silver Automation Instruments Contact
Email: [email protected]
Tel: +86-135-1213-1526
Whatsapp: 86-135-12131526
WeChat: +86 13512131526
Web: flow-meter.com.au and flow-meter.com.au