Sierra Instruments, Inc.

- Model 820 - Mass Flow Meters



The TopTrak 800 series provides an economical OEM gas mass flow meter in your choice of nylon, aluminum or stainless steel. Direct mass flow rate measurement with the nylon version at prices below that of a typical rotameter. Large tiltable display that can be mounted on the device or on a remote panel. Large cleanable sensor tube for use with dirty gases. Ask about OEM volume discounts on pricing to meet your budget requirements. For fast delivery, buy online and get next-day shipment.

  • Proven gas flow measurement with affordable OEM pricing
  • For fast delivery, buy online, next-day shipment
  • Save money with volume discounts
  • Read results easily with large tiltable display
  • Easy drop-in replacement with compact size
  • Available in economical nylon, stainless steel and aluminum

  • Ideal for OEM and general industry applications
  • Choice of nylon, aluminum or stainless-steel construction
  • Large, tiltable display readout
  • Compact size makes drop-in replacement easy
  • Mass flow rates up to 500 slpm (nlpm) for stainless-steel version
  • Stainless-steel version has large cleanable sensor tube for use with dirty gases

  • Most gases; check compatibility with wetted materials
  • Accuracy: +/- 1.5% of full scale
  • Repeatability: +/- 0.5% of full scale
  • Nylon version to 50 slpm (nlpm) maximum
  • Aluminum version to 175 slpm (nlpm) maximum
  • Stainless-steel version 500 slpm (nlpm) maximum
  • Response time: 800ms time constant
  • Pressure: Stainless-steel version to 500 psig (34.5 barg) maximum; Aluminum and Nylon versions to 150 psig (10 barg) maximum
  • Gas/ambient temperature 32 to 176°F (0 to 80°C), all versions
  • 15 VDC, 24 VDC power supply
  • Wetted materials: 10% glass-filled Nylon® 6/6; 316 stainless-steel
  • Seals: Viton, Neoprene, Kalrez, Teflon
  • Analog signals included: 4-20 mA; 0-5 VDC
  • CE approved

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