- Achieve the highest accuracy +/- 0.5% of reading
- Eliminate drift with DrySense sensor
- Reduce straight-run requirements with built-in flow conditioning
- Needs only 1-diameter up and zero downstream diameters
- Validate in the field for easy in-situ calibration
- Backed by lifetime sensor warranty
- Boiler MACT certified for area source boilers (40 CFR 63, subpart JJJJJJ) and for major source boilers (40 CFR 63, subpart DDDDD),
- Part of Sierra's Big-3 iSeries family of flow meter technologies,
- The QuadraTherm 780i is the most accurate inline thermal mass flow meter for air/gas flow rate measurement on the market today, achieving gas mass flow rate accuracy never before possible, +/- 0.5% of reading above 50% of full scale. The QuadraTherm rivals accuracies of Coriolis technology for measuring gas mass flow rate with a breakthrough thermal dispersion technology achieving “percent of reading” accuracy.
Thông số kỹ thuật
- Accuracy: +/- 0.5% of reading above 50% of full scale*
- Repeatability of +/- 0.15% of full scale
- Pipe sizes from 1.0" to 8.0" (1.3cm to 20.3cm)
- Flow range 0 to 60,000 sfpm (305 smps)
- Turndown: 1000:1
- Measure all inert gases and all non-condensing clean gases
- Flammable gases: methane, propane, hydrogen, digester gas, natural gas
- Corrosive gases compatible with 316L stainless steel
- 100:1 turndown
- Gas/ambient temperature -40°F (-40°C) to 392°F (200°C) *Verified by an independent NIST & NVLAP accredited lab
- Response time is three seconds to achieve 63% (one time constant) of final value
- Power supply 100 to 240 VAC (0.4 Amps RMS at 230 VAC); 24 VDC +/- 10%, 1 Amp
- 316 stainless steel construction
- Output Signals: RS-232, 4-20 mA flow, 4-20 mA temperature, 4-20 mA pressure (optional)
- Alarm output (contact SPST/opto relays)
- User definable pulse output for totalized flow
- Digital communications: Foundation Fieldbus, HART, Modbus RTU, and Profibus DP
- Hazardous-Area Location Enclosure (IP66)
- Approvals:
+ cFMus–Explosion proof for Class I, Div I, Groups B,C,D
+ CE–European Conformity
+ ATEX/IECEx