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 handling | — | Calculation mode stores readings and computes maximum, minimum and average; data output mode re-calculates stored data and outputs to PC or printer |
| Digital output | — | RS-232C |
| Analogue output | V DC | 0–1 optional |
| Power supply | — | 4 × AAA batteries; AC adapter optional |
| Main-unit dimensions | in | 3.4 × 7.4 × 1.6 |
| Probe | in | Length 12.5; diameter 1.0 |
| Weight | g | 500 (1.2 lbs) |
| Weight | g | Approx. 500 |
Specifications follow the current manufacturer product data (verified 30 August 2026). Specifications follow Kanomax Model 2212 manufacturer data. Confirm the required probe, optional analogue output, calibration scope and local service availability before ordering.
Used in these solutions
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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