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Sierra Instruments Flow Meter: SmartTrak Thermal Mass Gas Software
Quick Answer: The Sierra SmartTrak thermal mass flow meter with its SmartTrak software provides direct gas mass flow measurement without temperature or pressure compensation. Silver Automation Instruments supplies genuine SmartTrak meters with factory calibration for air, nitrogen, biogas, natural gas, and 30+ other gases. If you need a stable, low-maintenance mass flow meter for process control or leak testing, send us your flow range, gas type, pipe diameter, and operating pressure.
Most engineers working with gas flow encounter one headache early on: compensating for density. A thermal mass flow meter like the SmartTrak 50 Series sidesteps that by measuring heat dissipation directly proportional to mass flow. The onboard microprocessor converts the sensor signal to mass or volumetric units, and the SmartTrak software lets you change gas types, adjust the span, log data, and run totalizers from a laptop. We have seen this on customer sites many times — a biotech lab in Malaysia replaced three rotameters with one SmartTrak 50 and eliminated manual conversion charts overnight.
Why SmartTrak Software Transforms Field Calibration
Most flow meters require you to send the unit back for re-range or re-gas. The SmartTrak platform flips that. The software, which runs on Windows via USB or RS-232, grants access to Dial-A-Gas, a library of 30 preloaded gas calibrations. Within minutes, a technician can switch from argon to methane without removing the flow body from the pipe. The meter adjusts the calibration curve automatically. We have supplied SmartTrak systems to fire suppression equipment builders in the Middle East who regularly swap between CO2 and FM-200 test gases and cannot afford downtime.
Direct Mass Flow, No Compensation Required
Thermal mass measurement relies on two PT100 platinum RTD sensors — one heated, one reference. As gas flows, the heated sensor cools proportionally to mass velocity. The delta in resistance translates directly to mass flow. Because you measure mass directly, you do not need external pressure transmitters or temperature compensation loops. The output options include 4-20 mA analog, 0-5 VDC, and RS-485 Modbus RTU. With the optional HART protocol, the meter slides into existing DCS architecture in refineries or water treatment plants. Pipe sizes range from DN6 to DN50 for standard inline models; larger pipes up to DN300 can use insertion-style probes.
Applications Where SmartTrak Shows Clear Advantage
Biogas monitoring in landfill and anaerobic digestion is one clear case. Gas composition can shift, moisture and H2S are present, and requiring pressure-compensated volumetric meters becomes expensive. SmartTrak meters with anti-corrosive wetted parts (316L stainless steel, Hastelloy O-rings) handle sour gas reliably. A wastewater treatment operator in New South Wales uses four SmartTrak 50 units to measure biogas flow to cogeneration engines and reports less than ±0.8% drift over 12 months.
Thin film deposition and CVD processes in semiconductor fabrication benefit from fast response — sub-1-second time constant on the SmartTrak 100 Series — plus the ability to recalibrate in-house. Engineers skip mass flow controllers with limited turndown and pair a SmartTrak meter with a separate control valve for 100:1 turndown.
Leak detection and burner control in glass and steel plants also rely on thermal mass meters. Because the measurement works down to very low flows (0 to 10 sccm up to 1000 slpm), a single meter can monitor pilot gas and main combustion air. Silver Instruments has supported several glass tempering fu
Model Selection and Key Specifications
The SmartTrak family includes three main series. The SmartTrak 50 is the general-purpose version with ±1.0% of reading plus ±0.5% full scale accuracy, a bright OLED display, and the full Dial-A-Gas software package. The SmartTrak 100 targets high-purity applications and semiconductor gases, with UHP fittings (VCR, Tri-Clamp), electropolished surfaces, and leak integrity down to 1×10-9 atm-cc/sec helium. The SmartTrak 140 adds a Profibus DP option with integrated totalizer and data logging for remote sites.
Power supply is standard 24 VDC, signal outputs as mentioned, and approvals include ATEX Zone 1 (Ex db IIC T3 Gb) and IECEx for hazardous areas. Inlet pressure maximum is 34.5 bar (500 psig). Ambient temperature range is -20 to +60 °C. These figures are what we request from every customer: what gas, what flow range in kg/h or slpm, inlet pressure, and pipe connection size.
Silver Instruments Supply, Calibration, and Local Support
Silver Automation Instruments is an authorized channel for Sierra thermal mass flow meters. We hold stock of SmartTrak 50 models with most common ranges and can ship to Southeast Asia, Oceania, Latin America, Africa, and the Middle East within 5 business days. Each meter includes the SmartTrak software license, USB cable, NIST-traceable calibration certificate, and quick-start guide. Our application engineers will confirm gas compatibility, wetted materials, and mounting orientation before you buy. There is no charge for basic gas conversion support during the first year of operation.
To get a quote, send your gas type, flow range, pipe size (DN), and operating pressure to [email protected]. You can also contact us by phone at +86-135-1213-1526, on Whatsapp at 86-135-12131526, or on WeChat: +86 13512131526. We answer technical queries in English, Spanish, Portuguese, and Arabic.
FAQ: SmartTrak Thermal Mass Gas Software
Can I use the SmartTrak software to change gas types on the fly?
Yes. The Dial-A-Gas feature stores up to 30 gas calibrations. You select the gas in software, upload to the meter, and it recalculates span and curve. The process takes under 2 minutes. No hardware changes needed.
What is the difference between SmartTrak 50 and SmartTrak 100?
SmartTrak 50 covers standard industrial gases up to 1000 slpm with stainless steel body and elastomers. SmartTrak 100 has electropolished 316L surfaces, metal-to-metal seals, and UHP connections for semiconductor-grade gases. Accuracy is similar; cleanroom compatibility is the differentiator.
Does the SmartTrak software require a license fee or subscription?
No. The software is included with every SmartTrak meter. Silver Instruments provides the installation file and a one-time activation via USB driver. No annual fees.
How do I integrate SmartTrak into an existing PLC or SCADA system?
Use the 4-20 mA analog output for flow rate plus the RS-485 Modbus RTU for totalizer, temperature, and alarm status. The Modbus register map is fully documented, and our support team can provide sample ladder logic for Siemens, Allen-Bradley, and Mitsubishi PLCs.
Can I use a single SmartTrak meter for both nitrogen and natural gas?
You can, but you must switch the gas calibration each time. If your process alternates frequently, we recommend two dedicated meters or one meter with two gas spans stored and a digital input to toggle. Tell our engineers your sequence and we will configure accordingly.
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