1. Introduction
The Lascar Electronics EL-USB-CO300 is a compact, USB-enabled data logger designed to measure and record carbon monoxide (CO) levels. This device can store over 32,000 readings and features user-programmable alarm thresholds. Data is easily downloaded to a PC for analysis using the included software. This manual provides essential instructions for the proper setup, operation, and maintenance of your EL-USB-CO300 data logger.
2. Safety Information
- Do not expose the device to extreme temperatures or humidity.
- Avoid dropping or subjecting the device to severe impact.
- Do not attempt to open or modify the device; this will void the warranty.
- Ensure the device is used within its specified operating range.
- This device is for monitoring purposes only and should not be used as a primary safety device.
3. Package Contents
Verify that your package contains the following items:
- EL-USB-CO300 Carbon Monoxide Data Logger
- Software CD (or download instructions)
- Quick Start Guide
4. Device Overview
The EL-USB-CO300 features a compact design with a protective cap. Key components include:
- USB Connector: Located under the protective cap for direct connection to a PC.
- Status LED: Indicates logging status and alarm conditions. A bright red LED will flash when a user-determined alarm level is exceeded.
- Audible Alarm: Sounds when alarm thresholds are breached.
5. Setup
5.1 Software Installation
- Insert the provided software CD into your computer's CD-ROM drive, or download the latest software from the Lascar Electronics website.
- Follow the on-screen instructions to install the software.
- Once installed, launch the software.
5.2 Connecting the Device
- Remove the protective cap from the data logger to expose the USB connector.
- Plug the data logger directly into an available USB port on your computer.
- The software should automatically detect the connected device.
5.3 Configuration
Use the software to configure the data logger settings:
- Name: Assign a unique name to your logger for easy identification.
- Sampling Rate: Select the desired interval for taking readings (e.g., every 1 minute, 5 minutes).
- Alarm Thresholds: Set high and low CO concentration levels that will trigger the visual and audible alarms.
- Start Time: Choose when the logging should begin (e.g., immediate, delayed start, push-button start).
After configuring, click 'Apply' or 'Start' in the software to save settings to the logger. Once configured, the logger can be removed from the computer to log independently.
6. Operating
6.1 Starting a Logging Session
Once configured and removed from the PC, the logger will begin recording data according to the chosen start method. The status LED will indicate active logging.
6.2 Monitoring Data
During operation, if the carbon monoxide level exceeds the set high alarm threshold or falls below the low alarm threshold, the red LED will flash, and an audible alarm will sound.
6.3 Stopping a Logging Session
Logging will continue until the memory is full, the battery is depleted, or it is stopped manually via the software when reconnected to a PC.
7. Data Download and Analysis
- Reconnect the EL-USB-CO300 data logger to your computer's USB port.
- Launch the Lascar Electronics software.
- The software will detect the logger and prompt you to download the recorded data.
- Once downloaded, the data can be viewed, analyzed, and exported in various formats, including graphical representations.
8. Maintenance
8.1 Battery Life
The EL-USB-CO300 is designed for a battery life of approximately 3 months under typical usage conditions. When the battery is low, the device may indicate this via its status LED or software notification. Battery replacement should be performed by qualified personnel or returned to the manufacturer for service.
8.2 Cleaning
Clean the exterior of the data logger with a soft, damp cloth. Do not use abrasive cleaners or solvents. Ensure no moisture enters the USB port or sensor opening.
8.3 Storage
When not in use, store the data logger in a cool, dry place, away from direct sunlight and extreme temperatures. Ensure the protective cap is securely in place over the USB connector.
9. Troubleshooting
- Device not recognized by PC: Ensure the logger is fully inserted into the USB port. Try a different USB port or restart your computer. Verify that the software drivers are correctly installed.
- No data logging: Check if the logger was properly configured and started via the software. Ensure the battery is not depleted.
- Alarms not sounding: Verify that alarm thresholds are set correctly in the software and that the CO levels are within the range to trigger them. Check the device's battery level.
- Inaccurate readings: Ensure the sensor is not obstructed and the device is operating within its specified environmental conditions.
10. Specifications
| Feature | Specification |
|---|---|
| Measurement Range | 0 to 300 ppm |
| Reading Capacity | Over 32,000 readings |
| Connectivity | USB |
| Battery Life | Approximately 3 months |
| Item Model Number | EL USB CO300 |
| Package Dimensions | 5.5 x 3 x 1.5 inches |
| Weight | 3.2 ounces |
| Manufacturer | COLE-PARMER |
11. Warranty and Support
The Lascar Electronics EL-USB-CO300 data logger comes with a 1-year warranty from the date of purchase, covering defects in materials and workmanship. For technical support, warranty claims, or service inquiries, please refer to the contact information provided with your product documentation or visit the official Lascar Electronics website.





