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Continuous Emissions Mercury Monitor (915J)

Real-Time Speciating Hg Process Monitor

Available for Download

The 915J Continuous Emissions Mercury Monitor is an online mercury process monitor designed for use in challenging conditions including coal-burning utilities, cement kilns, incinerators, industrial boilers, and other industrial facilities.

A real-time mercury monitor is an essential tool for understanding and controlling mercury emissions and optimizing mercury control technologies. The 915J Mercury Monitor performs Continuous Emissions Mercury Monitoring for Point Source Emissions (Stacks) derived from the combustion of coal, Portland Cement manufacturing, industrial boilers, municipal incinerators, etc. Years of research and development, extensive testing, and improvements have resulted in an innovative design that focuses on high reliability, low maintenance, ruggedness, ease of use, and flexibility. Industry-leading performance has been demonstrated in dozens of power plants under a variety of challenging conditions.

Product Details

Continuous Emissions Mercury Monitor (915J) Features

  • Simple and modular design
  • Rugged and low maintenance
  • Insulated NEMA 4X enclosure
  • Short sample transport lines, heated to moderate temperatures
  • No liquids or gasses required, compressed air only
  • Excellent sensitivity and resolution at low levels
  • Speciation: ability to differentiate between elemental and oxidized mercury species
  • Second-by-second readings displayed as 1-minute averages
  • Built-in mercury calibrator
  • Rugged converter with high degree of reliability
  • Zeeman Correction technology to overcome interferences

Continuous Emissions Mercury Monitor (915J) Technical Specifications

Item Details
Measured Component Gaseous Total and Elemental Mercury
Range 0 - 100.00 micrograms per cubic meter
Lower Detection Limit 0.1 micrograms per cubic meter
Response Time (T90) 90 sec at specified gas flow
Reporting Interval 30 sec to 300 sec
Zero Drift Correction Dependent on measurement task,
Recommended: Every 30 min to 120 min
Calibration, Span Drift Correction: Elemental Hg Dependent on measurement task,
Recommended: Every 24 hours
Gas Flow 7 - 10 l/min
Communication Ports Ethernet (RJ-45)
Ambient Air Temperature -15°C to 50°C
Atmospheric Pressure 84 to 106.7 kPa
Ambient Relative Humidity < 99% at 35°C
Power 120 VAC, 60 Hz; max 4000 VA
Control Module Dimensions 17.7 x 29.5 x 21.6 in
450 x 750 x 550 mm
Heated Filter Module Dimensions 15.7 x 15.7 x 15.7 in
400 x 400 x 400 mm
Heated Probe Dimensions 59.1 x 1.5 in
1500 x 37.5 mm

Typical Applications for Continuous Emissions Mercury Monitor (915J)

  • Mercury process monitoring
  • Access to real-time data when using sorbent traps for compliance measurements
  • Regulate injection/feed rates of mercury control technologies such as activated carbon, FGD additives, oxidation chemicals, etc.
  • Test effectiveness of mercury control technologies
  • Gauge effects of process change on mercury emissions levels

Available Measurements for Continuous Emissions Mercury Monitor (915J)

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