UNI-T A37 Carbon Dioxide Meter 400–5000 ppm NDIR CO2 Monitor

UNI-T A37 Carbon Dioxide Meter in Sri Lanka

NDIR Indoor CO₂ Air Quality Monitor

The UNI-T A37 Carbon Dioxide Meter is a compact NDIR-based instrument for monitoring carbon dioxide concentration, temperature, and relative humidity in indoor environments. It measures CO₂ from 400 ppm to 5000 ppm and displays the measured values, date, and time together on its LCD screen.

Designed for homes, offices, classrooms, meeting rooms, commercial buildings, and general ventilation checks, the A37 provides a practical way to monitor indoor carbon dioxide levels and identify conditions that may require improved air circulation.

Discover our complete selection of CO₂ Meters – carbon dioxide, ppm, NDIR, and indoor air quality monitors in Sri Lanka!

The built-in NDIR CO₂ sensor supports stable carbon dioxide measurement, while automatic baseline correction helps maintain the instrument’s measurement performance during regular use. When the CO₂ concentration becomes too high, the meter provides both audible and visual alarms. Air-quality status is also represented using on-screen emoticons for quick interpretation.

Technical Specifications

Carbon Dioxide: 400–5000 ppm | Resolution: 1 ppm | Accuracy: ±(5% of reading + 50 ppm) from 400–2000 ppm under ambient temperature and humidity conditions

CO₂ Sensor: NDIR, non-dispersive infrared sensor

Temperature: -10°C to 50°C | Resolution: 0.1°C | Typical accuracy: ±1°C

Relative Humidity: 0%RH to 99%RH | Resolution: 1%RH | Accuracy: ±5%RH from 10%RH to 90%RH at 25°C

Automatic Baseline Correction: Included

Operating Environment: 0°C to 50°C, 0%RH to 85%RH

Storage Environment: -20°C to 60°C, 0%RH to 95%RH

Display: LCD with CO₂ concentration, temperature, humidity, date, time, and air-quality indication

Power Supply: 3.7V DC rechargeable Li-ion battery

Charging Port: Micro USB

Product Dimensions: 75 mm × 55 mm × 130 mm

Display Size: 42 mm × 65 mm

Net Weight: 195 g

Certifications: CE, UKCA

Key Features

NDIR CO₂ Measurement: Uses a non-dispersive infrared sensor for carbon dioxide concentration measurement

Wide Measurement Range: Measures CO₂ concentration from 400 ppm to 5000 ppm with 1 ppm resolution

Multi-Parameter Display: Shows CO₂, temperature, relative humidity, date, and time on the same screen

Air-Quality Indication: Uses on-screen emoticons to provide a quick visual indication of indoor air quality

Audible and Visual Alarm: Alerts the user when the carbon dioxide concentration becomes too high

Automatic Baseline Correction: Supports automatic baseline correction for regular CO₂ monitoring

Backlight: Improves display visibility in low-light indoor environments

Rechargeable Battery: Built-in 3.7V Li-ion battery with Micro USB charging

Convenient Operation: Includes low-battery indication and automatic power-off functionality

Compact Housing: Lightweight 195 g design suitable for desktop and portable indoor monitoring

Applications

Indoor carbon dioxide monitoring in homes and apartments

Ventilation checks in offices, meeting rooms, and commercial buildings

CO₂ level monitoring in classrooms, training rooms, and educational facilities

Air-quality assessment in shops, reception areas, and public indoor spaces

Environmental monitoring in laboratories and technical work areas

Portable CO₂ checks during building maintenance and HVAC inspections

Monitoring temperature, humidity, and CO₂ conditions in occupied rooms

Package Includes

1 x UNI-T A37 Carbon Dioxide Meter

1 x Micro USB charging cable

1 x English user manual

Downloads

📄 Download UNI-T A37 Data Sheet
📄 Download UNI-T A37 User Manual