Mac 125 Moisture Analyzer
MAC155 Moisture Analyzer
MAC 116 Steam Analyzer
NIST Traceable Certified

NIST Traceable Certified

Water Resistant Humidity Sensors for Harsh Environment Applications

MAC Instruments manufactures water-resistant humidity sensors engineered for extreme industrial environments. Our NEMA 4X/IP66-rated moisture analyzers measure humidity in temperatures up to 1200°F using patented solid-state technology—no wet bulbs, mirrors, or compressed air required. Designed for stacks, ducts, furnaces, kilns, and food processing lines, these instruments deliver accurate, instantaneous readings in the harshest conditions where standard sensors fail.

Our Range of Products

Mac 125 Moisture Analyzer

Mac 125 Moisture Analyzer

  • NEMA 4X waterproof outdoor design
  • Measures humidity up to 1200°F
  • No chemicals or compressed air
MAC155 Moisture Analyzer

MAC155 Moisture Analyzer

  • Built-in 2-point calibration system
  • 60-second fast response time
  • EPA compliant for stack monitoring
MAC 116 Steam Analyzer

MAC 116 Steam Analyzer

  • IP66 rated for CIP operations
  • Sanitary stainless steel design
  • 24V DC safe for wet locations

Frequently Asked Questions

What temperature range can these humidity sensors withstand?

Standard models measure accurately up to 1200°F (650°C), with optional configurations available for extreme applications up to 2400°F (1300°C) in industrial process environments.

Are these sensors suitable for outdoor installation?

How do these sensors measure humidity without wet bulbs or mirrors?

What is the typical response time for moisture measurement?

Can these sensors be calibrated in the field?

Are these humidity sensors compliant with EPA regulations?

What maintenance is required for these harsh environment sensors?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Power Generation

Power Generation

Monitor stack emissions and combustion efficiency in coal, biofuel, and natural gas plants with EPA-compliant moisture measurement.

Cement Manufacturing

Cement Manufacturing

Control moisture in kilns, calciners, and rotary dryers to optimize energy efficiency and product quality in cement production.

Food Processing

Food Processing

Maintain precise steam quality in continuous ovens and pasteurization equipment with sanitary IP66-rated sensors for CIP operations.

Metal Processing

Metal Processing

Measure humidity in furnaces, annealing ovens, and heat treatment processes where extreme temperatures demand specialized sensors.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Why Process Industries Choose MAC Instruments

Extreme Temperature Capability

Our patented solid-state sensors measure humidity accurately in temperatures up to 1200°F (optional 2400°F)—environments where conventional sensors simply fail. No wet bulbs, mirrors, or compressed air required for reliable operation.

Built for Harsh Environments

NEMA 4X/IP66 waterproof construction withstands outdoor installation, chemical washdowns, and corrosive atmospheres. Stainless steel barrels and cast aluminum enclosures ensure decades of reliable service in the toughest conditions.

30+ Years of Measurement Excellence

Since 1990, we've been the world leader in high-temperature moisture measurement. Our NIST-traceable instruments serve hundreds of installations globally across power generation, cement, food processing, and metal processing industries.

Get Expert Guidance on Selecting the Right Humidity Sensor

Our applications engineers will help you specify the optimal sensor configuration for your process conditions. Expect a detailed technical consultation within 24 hours.

Contact Us Today

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