Extech CO250 Indoor Air Quality Meter
The Extech CO250 Indoor Air Quality Meter delivers reliable performance and ensures ease of use in indoor environments. Designed to support safety and compliance, it accurately monitors carbon dioxide, temperature, humidity, dew point, and wet bulb readings in real time. Its sturdy design and maintenance-free sensor make it ideal for both routine checks and more demanding conditions.
With its intuitive triple LCD screen and backlit display, the Extech CO250 presents all measurement data clearly, even in low-light settings. The instrument also supports TWA (8-hour time weighted average) and STEL (15-minute short-term exposure limit) calculations. These functions help users maintain air quality awareness and prevent prolonged exposure in the workplace.
Practical Features for Professionals
The Extech CO250 includes a user-programmable high CO₂ alarm with an audible beeper, alerting users when levels exceed set thresholds. It also features data hold, so users can freeze values for closer inspection. The built-in RS-232 interface allows fast data transfer to a PC using the included software and cable, though internal memory is not included.
Designed for Long-Term Use
Powered by four AA batteries, the Extech CO250 is supplied with a carrying case for added portability. It supports RH calibration using Extech RH300-CAL bottles (sold separately), making it suitable for long-term deployment. The high-performance NDIR sensor ensures dependable CO₂ readings across a wide range of applications.
Key Features
- Measures carbon dioxide from 0 to 5000ppm
- Calculates 8-hour TWA and 15-minute STEL values
- Includes dew point and wet bulb readings
- Shows temperature between -10 and 60°C
- Measures relative humidity from 0 to 99.9%
- Displays all data on backlit triple LCD screen
- Programmable CO₂ alarm with audible alert
- Data hold function for fixed reading display
- RS-232 port for PC connectivity with software
- Comes with batteries, software, cable, and case
