Insertion Thermal Mass Flow Meter for Boiler & Heater Efficiency

• Since 2006, over 25,000 units installed on methane, propane, natural gas
• Greenhouse Gas (GHG) certified to meet EPA (40 CFR Part 98)
• Smart electronics permit field adjustment of critical flow meter settings
• 200-millisecond response to changes in flow rate
• Programmable pulse output for remote totalization
• Minimal flow blockage and low pressure drop
• Field flow-range adjustment, meter validation and diagnostics
• Program transmitter via RS-232 using free user software or with three push-buttons on display interface
• Sierra's state-of-the-art ISO 9000 calibration facility matches each application to ensure best accuracy

• Flow-range adjustment and validation and diagnostics
• Field validation/configuration to ensure operating performance
• Flow totalizer and alarms
• 2 x 12 backlit LCD display totalizer value
• Remote enclosure mounting available
• Very low pressure drop
• No moving parts
• Free computer interface software
• Certified for Boiler MACT measurement meeting EPA regulations for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD) Learn More.

• Measure all inert gases and all non-condensing clean gases
• Accuracy: +/- 1% of full scale
• Repeatability of +/- 0.2% of full scale
• Probe lengths from 3.7" (9.3cm) up to 24" (61cm) 
• Small-diameter, 3/8-inch (9.5mm) sensor probe
• Flammable gases: methane, propane, hydrogen, digester gas, natural gas
• 100:1 turndown
• Temperature:
  • Gas: -40°F to 176°F (-40°C to 80°C)
  • Ambient: -40°F to 120°F (-40°C to 50°C)
• Response time is 200 milliseconds to achieve 63% of final value

View All Specs

• Power supply 15 to 18 VDC (regulated), 625 mA draw maximum
• Output signals: Linear 0–5 VDC and 4-20 mA
• User definable pulse output for totalized flow
• Digital communications solutions include:  Modbus RTU
• Enclosure NEMA 4X (IP65); remote electronics mounting available
• CE approved