Indoor Air Quality Monitor Model 2212
Handheld multi-parameter IAQ monitor that simultaneously measures CO, CO₂, temperature and relative humidity, then calculates dew point, wet-bulb temperature, absolute humidity, humidity ratio and percentage of outside air.
Model Overview
| Model | Measured parameters | Calculated values | Primary use |
|---|---|---|---|
| 2212 | CO, CO₂, temperature and relative humidity | Dew point, wet-bulb temperature, absolute humidity, humidity ratio and % outside air | IAQ investigation, commissioning and ventilation assessment |
Key Features
Simultaneous multi-parameter measurement
Measures CO, CO₂, air temperature and relative humidity with one replaceable probe.
Derived psychrometric values
Calculates dew point, wet-bulb temperature, absolute humidity and humidity ratio.
Outside-air calculation
Uses temperature or CO₂ measurements to calculate percentage of outside air for ventilation checks.
Built-in data storage
Stores up to 1,500 measurements for point-by-point surveys and later review.
User calibration functions
Provides calibration modes for CO and CO₂ and supports an optional analogue output.
PC data workflow
RS-232C output and included data-processing software support transfer, statistics and reporting.
Technical Specifications
| Parameter | Unit | Value / Description |
|---|---|---|
| MEASUREMENT | ||
| CO range | ppm | 0–500 |
| CO accuracy | — | ±3% of reading or ±3 ppm, whichever is greater |
| CO resolution | ppm | 0.1 from 0–99 ppm; 1 from 100–500 ppm |
| CO₂ range | ppm | 0–5,000 |
| CO₂ accuracy | — | ±3% of reading or ±50 ppm, whichever is greater |
| CO₂ resolution | ppm | 1 |
| Temperature range | °C | −20 to 60 |
| Temperature accuracy | °C | ±0.5 |
| Relative-humidity range | %RH | 2–98 |
| Relative-humidity accuracy | — | ±2%RH from 2–80%RH; ±3%RH from 80–98%RH |
| Calculated values | — | Dew point, wet-bulb temperature, absolute humidity, humidity ratio and % outside air |
| DATA & OPERATION | ||
| Measurement modes | — | Normal, calculation, % outside air, data output and calibration |
| Data storage | records | Up to 1,500 |
| Digital output | — | RS-232C |
| Analogue output | V DC | 0–1 optional |
| Power supply | — | 4 × AAA batteries; AC adapter optional |
| Main-unit dimensions | in | 3.5 W × 7.5 H × 2.0 D |
| Weight | g | Approx. 500 |
Specifications follow Kanomax Model 2212 manufacturer data. Confirm the required probe, optional analogue output, calibration scope and local service availability before ordering.
Applications
Indoor air-quality investigations
Survey CO, CO₂, temperature and humidity conditions in occupied buildings.
Building commissioning
Verify ventilation and indoor environmental conditions during HVAC commissioning.
Outside-air assessment
Estimate the percentage of outside air using temperature or CO₂ measurements.
Thermal-comfort checks
Review temperature, humidity and calculated psychrometric values.
Workplace exposure screening
Support employee-health and industrial-hygiene investigations involving CO and CO₂.
Operational troubleshooting
Identify ventilation problems and compare zones or operating conditions.
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