TSI Alnor IAQ-CALC-7525, IAQ-CALC-7545 Data sheet
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IAQ-C
ALC
TM
Indoor Air Quality Meters
Models 7515, 7525, 7535, and 7545
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).
Applications
Conduct IAQ evaluations
Verify building HVAC system performance
Examine building IAQ conditions to optimize worker productivity
Comply with regulations and guidelines
Data Logging-Models 7525, 7535, and 7545
TSI LogDat2TMsoftware permits easy transfer of data to
a computer
Data can be reviewed on-screen, or downloaded to a
computer for easy report generation
Statistics function displays average, maximum and
minimum values, and the number of recorded samples
Features and Benefits
Low-drift NDIR CO2sensor for stable, accurate readings
Sampling function records multiple point measurements
Ergonomic, overmolded case design
Models 7525 and 7545
Temperature and relative humidity measurements help
determine thermal comfort
Calculates % outside air from either CO2or temperature
Directly calculates dew point and wet bulb temperatures
Electrochemical sensor measures CO (Model 7545)
Models 7525 and 7545 display up to three parameters
Models 7515 and 7535 display CO
2
Indoor Air Quality Instruments
ENERGY AND COMFORT
Model 7545
TRUST. SCIENCE. INNOVATION
Logging Capability (Models 7525 and 7545)
Ranges Model 7525 logs up to 30,300 data points with key (3)
measured parameters enabled
Model 7535 logs up to 40,300 data points with key (1)
measured parameters enabled
Model 7545 logs up to 26,900 data points with key (4)
measured parameters enabled
Time Constant 1 sec, 5 sec, 10 sec, 20 sec, 30 sec (user selectable)
Log Intervals 1 second up to 1 hour (user selectable)
Meter Dimensions (all models)
3.3 in. x 7.0 in. x 1.8 in. (8.4 cm x 17.8 cm x 4.4 cm)
Probe Dimensions (Model 7515)
Length 2.75 in. (7.0 cm)
Diameter 0.75 in. (1.9 cm)
Probe Dimensions (Models 7525, 7535, and 7545)
Length 7.0 in. (17.8 cm)
Diameter 0.75 in. (1.9 cm)
Weight (with batteries)
0.6 lbs (0.27 kg)
Power Requirements
Model 7515 Four AA-size batteries
Models 7525, 7535, and 7545
Four AA-size batteries or AC adapter
1
At 77°F (25°C). Add uncertainty of ±0.2%/°F (±0.36%/°C) away from calibrated temperature.
2
At 77°F (25°C). Add uncertainty of ±0.03% RH/°F (±0.05% RH/°C) away from calibrated temperature.
Specifications subject to change without notice.
ENERGY AND COMFORT
Specifications
IAQ-CALC
TM
Models 7515, 7525, 7535, 7545
CO2
Sensor Type Dual-wavelength NDIR
(non-dispersive infrared)
Range 0 to 5000 ppm
Accuracy
1
±3.0% of reading or ±50 ppm,
whichever is greater
Resolution 1 ppm
Response Time 20 seconds
Temperature (Models 7525 and 7545)
Sensor Type Thermistor
Range 32 to 140°F (0 to 60°C)
Accuracy ±1.0°F (±0.6°C)
Resolution 0.1°F (0.1°C)
Response Time 30 seconds (90% of final value, air
velocity at 400 ft/min [2 m/s])
Relative Humidity (Models 7525 and 7545)
Sensor Type Thin-film capacitive
Range 5% to 95% RH
Accuracy
2
±3.0% RH
Resolution 0.1% RH
Response Time 20 seconds (for 63% of final value)
% Outside Air (Models 7525 and 7545)
Range 0 to 100%
Resolution 0.1%
CO (Model 7545 only)
Sensor Type Electro-chemical
Range 0 to 500 ppm
Accuracy ±3.0% of reading or ±3 ppm, whichever is
greater
Resolution 0.1 ppm
Response Time <60 seconds to 90% step change
Operating Temperature
40 to 113°F (5 to 45°C)
Storage Temperature
-4 to 140°F (-20 to 60°C)
Indoor Air Quality Instruments
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