Envco – Environmental Equipment

Features and Benefits
Low-drift NDIR CO2 sensor for stable, accurate readings
Sampling function records multiple point measurements
Ergonomic, overmolded case design
Applications
Verify building HVAC system performance
Examine building IAQ conditions to optimize worker productivity
Comply with regulations and guidelines

Specifications
IAQ-CALC Model 7515
CO2
Sensor Type Dual-wavelength NDIR
(non-dispersive infrared)
Range 0 to 5000 ppm
Accuracy1 ±3.0% of reading or ±50 ppm, whichever is greater
Resolution 1 ppm
Response Time 20 seconds

Operating Temperature
40 to 113°F (5 to 45°C)

Storage Temperature
-4 to 140°F (-20 to 60°C)

Meter Dimensions
3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm)

Probe Dimensions
Length 2.75 in. (7.0 cm)
Diameter 0.75 in. (1.9 cm)

Weight (with batteries)
0.6 lbs (0.27 kg)

Power Requirements
Four AA-size batteriesr Quality Instruments

Included Items
Instrument
Hard carrying case
NIST or EAL Calibration certificate
Operation and Service manual

TSI's IAQ-CALC™ Meters are outstanding instruments for investigating and monitoring indoor air quality (IAQ). The Model 7515 is a cost-effective meter for carbon dioxide (CO2) measurements. The Model 7535 adds data logging of CO2. The Models 7525 and 7545 simultaneously measure and data log multiple parameters. The Model 7525 measures CO2, temperature, humidity, and calculates dew point, wet bulb temperature, and % outside air. The Model 7545 adds carbon monoxide (CO).