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TM100™ Flow Meter

The TM100 delivers amazing value to end user’s burner and combustion applications, natural gas and pure gas monitoring, and compressed gas and packing leaks. Make no sacrifices in precision, speed, and field flexibility to maintain optimum process efficiency. Sierra’s TM100 is built to last and meet your application, budget, and delivery needs.

Benefit from the powerful features of Sierra’s TM500™ at a more affordable cost with the TM100. If your application doesn’t require the TM500’s remote configuration, AC power, or flow range over 25,000 sfpm, Sierra’s TM100 may be the ideal meter for you.

The TM100 makes you smarter and your processes more reliably efficient. And we’re always here if you need us—Sierra’s promise to customers for 50 years.

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    • Accuracy
      • +/- 1.0% of reading plus +/- 0.2% of full-scale – Air, Nitrogen
      • +/- 1.5% of reading plus +/- 0.5% of full-scale – All other gases
    • Repeatability +/- 0.2% of full scale
    • Direct measurement of gas mass flow / No volume to mass calculations
    • DigiSense robust sensor design
    • Welded, 316 SS sensor
    • Insertion and Inline versions
    • Rotatable enclosure: allows ±180 degree display orientation
    • 12 to 24 volt DC power
    • Flow Range: 0 to 25,000 sfpm
    • Wide measurement range: up to 1000:1 turndown; 100:1 typical
    • Negligible pressure drop
    • One 4-20mA output for flow rate or temperature
    • Measure gas flow rate in scfm, mcfd, kg/h, and more
    • Low-end sensitivity (0-500 sfpm) for leak detection and other low-flow applications
    • Communication options: HART with pulse output or Modbus RTU (RS485), BACnet MS/TP (RS485)
    • FM/FMc, ATEX, and IECEx approvals. CE Mark.
    • NEMA 4X


    • Microprocessor based, field programmable electronics
    • Menu of field selectable gas compositions with Gas-Mix (Optional)
    • Free TM100-View software available / USB port connects to a PC
    • Calibration Validation with TM-Cal
    • NIST-traceable calibration
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