The Dwyer EMMA (Environmental Multifunction Meter) is a comprehensive six‑in‑one instrument designed to simplify environmental monitoring in HVAC, facility maintenance, and industrial hygiene applications. By combining measurements of humidity, temperature, air velocity, airflow, sound level, and illumination into a single handheld device, the EMMA eliminates the need for multiple specialized tools.

The large dual‑line, 4½‑digit LCD display shows both current and average readings simultaneously, with a built‑in backlight for easy viewing in dimly lit areas. Beyond real‑time and average values, the EMMA also provides minimum, maximum, and differential measurements for each parameter, enabling detailed trend analysis and comparison.

Key measurement ranges and accuracies include temperature from 14 to 140°F (±2.7°F), humidity from 0 to 100% RH (±3% RH), sound level from 30 to 130 dB(A) (±1.5 dB), illumination up to 50,000 lux (±5% of reading +10), air velocity from 96 to 5913 fpm (±3% of reading +10), and airflow up to 999,900 cfm (±3% of reading +10). With a fast 500 ms response time, the meter captures changing conditions with confidence.

The EMMA ships complete with a protective carrying case, rubber boot, tripod, and 9V battery—ready for immediate field use. Its rugged design and comprehensive feature set make it the ideal choice for professionals who need accurate, reliable environmental data across multiple parameters.

Typical applications include:

• HVAC system performance verification and balancing
• Indoor air quality (IAQ) assessments
• Facility maintenance and commissioning
• Industrial hygiene and workplace safety monitoring
• Lighting and acoustical surveys

Features

• Six measurement functions: temperature, humidity, air velocity, airflow, sound level, illumination
• Dual-line 4½‑digit LCD with backlight
• Displays current, average, minimum, maximum, and differential readings
• Temperature range: 14 to 140°F (-10 to 60°C)
• Humidity range: 0 to 100% RH
• Sound level: 30 to 130 dB(A), 35 to 130 dB(C)
• Light range: 0 to 50,000 lux
• Air velocity range: 96 to 5913 fpm
• Air flow range: 0 to 999,900 cfm (0.5 to 30 m/s)
• Response time: 500 ms
• Powered by 9V alkaline battery (included)
• Includes carrying case, rubber boot, and tripod