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Single Channel USB Data Loggers

Carbon Monoxide (CO) USB Data Logger

Product Code: HDT-CO

(79.49 exc. VAT)
(77.11 exc. VAT)
(74.72 exc. VAT)
The HDT-CO is a USB data logger that measures and stores up to 32,510 Carbon Monoxide (CO) readings over a 0 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


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.

• 3 to 1000 ppm CO measurement range
• Stores up to 32,510 measurements
• User-programmable warning threshold with bright visual and audible warnings
• USB interface for set-up and data download
• Easy setup using free EasyLog USB PC software
• Expected sensor life: 4 years
• Replaceable battery supplied
• Link to free configuration software supplied

Technical Details
Measurement Range3 to 1000 ppm CO *
Internal Resolution0.5 ppm CO Typical
Accuracy (overall error)±2 ppm Minimum ±6% Typical
Repeatability±3% Typical
Long Term Drift5% / year Maximum
Zero Offset±2 ppm CO Typical
Response Time (to reach 90%)1 Minute Typical
Unit of Measurementppm CO
Logging RateEvery 10s up to every 5 Minutes
Operating Temperature Range(15-90 %RH, non-condensing) -10ºC to +40ºC (+14ºF to +104ºF)
Operating Pressure Range900 to 1100 mBar
Battery3.6V ½ AA lithium battery (replaceable)
Battery Life3 Months Maximum **
Dimensions125mm (L) x 26.4mm (W) x 26.4mm (H)

Note: supplied product colour may vary from image shown

* Do not expose to levels above 1000ppm (ie directly measuring the exhaust of a car or wood burner)

** With battery supplied, 5 minute logging rate, 25°C ambient temperature, audible warning disabled, reading < 10ppm CO

Free EasyLog USB softwareClick here to download free EasyLog USB software
Compatible with 32-bit and 64-bit versions of Microsoft Windows 7, 8 and 10

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