Carbon Monoxide (CO) USB Data Logger
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Measure and store up to 32,510 Carbon Monoxide (CO) readings over a 3 to 1000 ppm measurement range and -10°C to +40°C (+14°F to +104°F) operating temperature range. Supplied with battery and link to free PC software for config/analysis.

The HDT-CO is a USB data logger that measures and stores up to 32,510 Carbon Monoxide (CO) readings over a 3 to 1000 ppm measurement range and -10°C to +40°C (+14°F to +104°F) operating temperature range.
Easily configure the data logger by plugging it into a PC's USB port and running the free EasyLog USB software, available for download using the link below. Configuration options include: logger name, logging rate (10s, 30s, 1m, 5m), warning threshold and start date/time. Logged data can be downloaded via the software and then graphed, printed or exported to other applications.
The data logger is supplied complete with a long-life lithium battery. Data is stored in non-volatile memory and is not lost when the battery is empty. A bright red LED will flash and a buzzer can sound when a preset warning level has been exceeded.
Lascar Product Code: EL-USB-CO
IMPORTANT SAFETY WARNING
The HDT-CO is a professional instrument that is designed to measure and record levels of Carbon Monoxide (CO) in air over a period of time. It takes a sample reading at set intervals for recording / monitoring / analysis purposes. It is not a suitable substitute for a domestic or industrial Carbon Monoxide detector/alarm.
Features
- -35°C to +80°C (-31°F to +176°F) range
- USB interface for set-up and data download
- Easy setup using free EasyLog USB PC software
- Programmable alarm thresholds
- Status indication via red, green and orange LEDs
- Replaceable battery supplied
- Link to free configuration software supplied
- Environmental protection to IP67 (when cap fitted)
- Detachable wall clip cap
Product Extra Information | Specification
1 Do not expose to levels above 1000ppm (ie directly measuring the exhaust of a car or wood burner) 2 With battery supplied, 5 minute logging rate, 25°C ambient temperature, audible warning disabled, reading < 10ppm CO |
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Free EasyLog USB software
The core of Lascar's USB data logging solution is the free software supplied with each USB data logger. Using a wizard format to guide the user through setup of the data logger and subsequent download of collected data, the software puts the 'easy' into EasyLog.
Compatible with Windows 10 and 11