TSI 7515/7525/7545 IAQ-CALC INDOOR AIR QUALITY METERS

Descriptions of TSI 7515/7525/7545

• Model 7515 is a cost-effective meter for carbon dioxide (CO2) measurements.
• Models 7525 and 7545 simultaneously measure and data log multiple parameters.
• Model 7525 measures CO2, temperature, humidity, and calculates dew point, wet bulb temperature, and percentage outside air.
• Model 7545 adds detection of 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

Features and Benefits – All Models

+ Low-drift NDIR CO₂ sensor 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 percentage outside air from either CO₂ or temperature

+ Directly calculates dew point and wet bulb temperatures

+ Electrochemical sensor measures CO (Model 7545)

+ Displays up to three parameters

+ TSI LogDat2™ software 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

Technical specifications of TSI 7515/7525/7545

• CO2

Sensor Type – Dual-wavelength NDIR  (non-dispersive infrared)

Range – 0 to 5,000 ppm

Accuracy – ±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  – 0 to 60°C (32 to 140°F)

Accuracy   – ±0.5°C (±1.0°F)

Resolution – 0.1°C (0.1°F)

Response Time – 30 seconds (90% of final value, air velocity at 2 m/s [400 ft/min])

• Relative Humidity (Models 7525 and 7545)

Sensor Type –  Thin-film capacitive

Range – 5% to 95% RH

Accuracy – ±3.0% RH

Resolution – 0.1% RH

Response Time – 20 seconds (for 63% of final value)

• Percentage 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 –5 to 45°C (40 to 113°F)
• Storage Temperature – -20 to 60°C (-4 to 140°F )
• Logging Capability (Models 7525 and 7545)

Ranges   – Model 7525 logs up to 30,300 data points with key (3) 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) –8.4 cm x 17.8 cm x 4.4 cm (3.3 in. x 7.0 in. x 1.8 in.)
• Probe Dimensions (Model 7515)

Length  – 7.0 cm (2.75 in.)

Diameter – 1.9 cm (0.75 in. )

• Probe Dimensions (Models 7525 and 7545)

Length – 17.8 cm (7.0 in. )

Diameter – 1.9 cm (0.75 in. )

• Weight (with batteries) –0.27 kg (0.6 lbs)
• Power Requirements

Model 7515 –  Four AA-size batteries

Models 7525 and 7545 – Four AA-size batteries or AC adapter