Sindie® On Line

Effective Online Sulfur Analysis in Petroleum Process Streams

Sindie Online is an industrial-grade process analyzer delivering continuous sulfur detection to monitor fuel streams and help to prevent tank contamination. It has many advantages over competing technologies: Powered by MWDXRF, Sindie Online has an exceptional signal-to-noise ratio using monochromatic excitation of the X-ray source characteristic line – a technique that is faster, safer and cleaner than UVF.


  • Multi-stream analysis capability
  • Extended Range (XR) available for measurements above 3000 ppmw up to weight percent levels
  • Auto-validation capability

Methods: ASTM D7039

Sindie® Online is an industrial grade process sulfur analyzer with breakthrough detection capability to monitor ultra-low sulfur in petroleum or aqueous process streams. This process analyzer presents the ultimate solution for refineries and pipeline terminals where measurement speed and reliability are essential. Powered by MWDXRF ®, Sindie Online uses ASTM D7039 technology and delivers real-time, continuous analysis of total sulfur from 0.5 ppmw up to 3000 ppmw. This process analyzer is ATEX and NEC certified for hazardous area locations.


  • Refinery: hydrotreating, hydrofiner, and blending processes
  • Pipeline terminals: interface cuts, custody transfer acceptance, and tank contamination prevention


  • Uses ASTM D7039 technology
  • ATEX Zone 1 and NEC Cl | Div 2 Certified
  • LOD: 0.5 ppmw in hydrocarbon matrices @ 300 s
  • LOD: 1.5 ppmw in aqueous streams @ 300 s
  • Dynamic range: 0.5 ppmw – 3000 ppmw
  • For most application purposes, one calibration curve over full dynamic range
  • Robust industrial design: wall mounted or stand-alone


  • Continuous, real-time analysis
  • Rapid response to sample change
  • Easy to use with an intuitive touch screen interface
  • Direct measurement in ppm wt
  • Low Maintenance: no consumable liquids, gasses, combustion, or sample conversion
  • Not sensitive to sample temperature changes

Analytical Platform: MWDXRF

Dynamic Range: Hydrocarbon: 0.5 ppmw – 3000 ppmw / Aqueous: 1.5 ppmw – 5000 ppmw

Response Time: 300 s for precise measurement, 15 s for rapid update

Calibration: 3-5 point linear calibration curve

Data Communication: 2x 4-20 mA analog outputs, multiple discrete alarm outputs

Digital Communication: Modbus TCP, Modbus RS-232, Modbus RS-485 (half or full duplex)

Local HMI: Touchscreen display

Remote Diagnostics: Optional via TCP/IP or UDP

Power: 110-240 VAC, 50-60 Hz, 790 W max.

Instrument Air – Purge and Valve: 40-115 psig, (276-793 kPa) 4 scfm max; -40 F (-40 C) dewppoint, oil free, N2 optional

Ambient Temperature: 32-95 F (0-35 C) Standard; -4 to 113 F (-20 to 45 C) Optional – Consult Factory

Dimensions: 62 in (h) x 34 in (w) x 18 in (d) / 158 cm (h) x 86 cm (w) x 46 cm (d)

Weight: 280 lb (127 kg)

Certifications: ATEX Zone 1 Ex db ia [ia Ga] pxb IIC T4 Gb; CE, NEC Class I Div 2 Groups B,C,D T4A

Lazar Scientific is your reliable source for Elemental Analysis.