SM-4 Mercury Stack Gas Monitor

SM-4 Mercury Stack Gas Monitor

Monitoring of Total Mercury Emissions

SM-4 Technical Specifications

Principle of measurement: Sample dilution, thermo catalytic converter,
atomic absorption detector with Gold Trap
Converter: Low temperature type (200 °C); directly at stack
Detection principle: Cold Vapor Atom Absorption Spectrometry (CVAAS), wavelength 253.7 nm
Measured component: total mercury (oxidised and elemental speciation optionally)
Measuring range: 0.05 µg/m³ to 500 µg/m³ Hg (up to 1000 µg/m³ as an option)
Detection limit (detector): 0.0001 µg/m³ (detector); <0.01 µg/m³ (system)
Response time: 180 – 360 sec
Max. Sample gas temperature: 250 °C (482 °F)
Ambient temperature range allowed: -5 °C to 40 °C (23 °F to 104 °F)
Sample line length: Up to 30 m (100 feet); up to 100 m (300 feet) optionally
Signal output: 4-20 mA (500 Ohms); RS232; modbus RTU/RS485 (option) ; ethernet (option)
Status output: 3 x pairs of relay contacts (dry contacts)
Remote access: Modem and SM-4 communication software (option)
Dimensions: Analyzer cabinet: 161 x 80 x 60 cm (63.6”x 32”x 23.6”) HxWxD
Probe: 36 x 36 x 66 cm (14.2”x 14.2”x 26”) HxWxD
Probe controller: 48 x 44 x 27 cm (19”x 17” x 11”) HxWxD
Weight: Analyzer (including automatic calibrator): 130 kg (285 lbs)
Probe controller: 14 kg (30 lbs)
Converter unit: 28 kg (62 lbs)
Air consumption: 6 bar (85 PSI); 16 l/min approx.
Calibration/span check: Automatically, with an integrated calibration gas generator (option). A heated fitting is installed at the probe for feed of externally provided calibration gases
Certifications: Conforms to US EPA 40CFR60 PS-12A Mercury CEMS; conforms to EN 15267 (European regulation); Approved and certified by TÜV Rheinland Energie und Umwelt GmbH, Köln, Report-Nr.: 936/21213740/A of March 26, 2012
Mercury Instruments As a leading supplier of high precision analytical equipment, we strive at all times to offer top quality solutions. Our products are manufactured according to the ISO 9001 quality regulation

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