
MAC155 Moisture Analyzer
- Built-in 2-point calibration system
- High temp capability to 1200°F
- NEMA 4X waterproof outdoor design


NIST Traceable Measurement
US EPA Compliant
NEMA 4X Rated
MAC Instruments' moisture analyzers for boiler exhaust provide precise, continuous monitoring of water vapor in power plant stack gases. These high-temperature capable systems measure moisture content up to 1200°F (optionally 2400°F), ensuring accurate combustion efficiency calculations and EPA emissions compliance. With patented solid-state sensor technology requiring no wet bulbs, mirrors, or compressed air, these analyzers deliver reliable readings for regulatory reporting and process optimization in coal, biomass, and natural gas-fired facilities.


How does an exhaust gas analyzer work?
Exhaust gas analyzers use sensors to measure gas components in combustion exhaust. MAC analyzers employ patented solid-state humidity sensors that detect water vapor pressure at high temperatures without wet bulbs or optics.
What is the temperature range for boiler exhaust moisture measurement?
How often does the moisture analyzer require calibration?
Are these moisture analyzers EPA compliant for emissions monitoring?
What is the response time for moisture readings?
Can the analyzers be installed outdoors on exhaust stacks?
What measurement ranges are available for boiler exhaust monitoring?
Talk to our experts for custom solutions and tailored guidance.

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Talk to our experts for custom solutions and tailored guidance.



Our patented solid-state sensors withstand stack temperatures up to 1200°F standard (2400°F optional) without wet bulbs, optics, or compressed air—delivering consistent accuracy in harsh power plant environments.
NIST-traceable measurements and US EPA-compliant design ensure your facility meets emissions monitoring regulations with reliable, defensible data for continuous emission monitoring systems and regulatory reporting.
MAC155 features in-situ 2-point calibration capability performed daily without removing the analyzer, minimizing downtime and maintaining measurement integrity for 24/7 boiler exhaust monitoring.
Submit your inquiry and our technical specialists will respond within 24 hours with application-specific recommendations and detailed specifications.
For immediate assistance, feel free to give us a direct call at 419.621.2322 You can also send us a quick email at info@macinstruments.com
For immediate assistance, feel free to give us a direct call at 419.621.2322 You can also send us a quick email at info@macinstruments.com