Phone: (712) 439-6880
Hours: 8 AM - 5 PM Central Time

DL-2: Ozone Datalogger

Easy to use datalogger


  • Stores tens of thousands of data points
  • Easy-to-use software
  • Push-button, or sheduled, start
  • Includes software, USB interface cable and software manual
  • Compatible with any ozone monitor

(See Full Specifications)

DL-2 $385.00
Stock: In Stock
Choose your Datalogger Kit:


The DL-2 Datalogger easily stores up to 43,000 datapoints! Data is instantly & quickly transferred to the computer with included USB Cable & Windows XP compatible software.


Dimensions 0.9 x 2.3 x 2.9 inches (2.2 x 5.8 x 7.4 cm)
Weight 2.25 lbs (1.02 kg)
= 10 N
= 2.248089 lb
= 1.019716 kg
= 1,019.716213 g
= 1,019,716.212978 mg
= 35.969431 oz
Accuracy +/- 2 mV, +/- 2.5% of absolute reading
Activity Indicator yes Blinking LED confirms operation
Analog Inputs 0-2.5 V
Has Battery yes 1-year life - user replaceable (CR-2032 lithium)
Input Voltage Range 0 - 2.5 VAC
Memory Type EEPROM memory retains data after battery has been removed
Operating Temperature -4 to 158°F (-20 to 70°C)
Signal Resolutions 16-bit
Software Instantly plot data(min, max, avg) with HOBOware Lite software for Windows, or Mac - Export points as a text file (.csv or .txt) into Excel, Lotus, Etc.
Storage Space 64 KB 43,000 data points
= 65,536 bytes
= 64 KB
= 0.0625 MB
= 0.000061 GB
Warranty 1 Years


Documents / Downloads

Frequently Asked Questions

  1. On the OS-4, why is my Analog Output reading 1/2 of the Display reading? (For example, the OS-4 analog output seems to indicate 0.2 ppm when the OS-4 display reads 0.4 ppm)

    This discrepancy is due to the Scaling of the Analog Output (and applies to both the 4-20 mA and 0-2V outputs). The OS-4 utilizes an SM-X sensor. This chip, on its own, is designed to read up to 20 ppm. Therefore the output of the chip scales from 0-20 ppm, even though the OS-4 is rated for just 0-10 ppm. If your analog readings are 1/2 of what is diaplayed, it is likely because you scaled your analog output from 0-10 ppm instead of 0-20 ppm. As an example, if your OS-4 is reading 10 ppm you may expect to see 2V on the analog output (full scale). Instead, you will see 1V (1/2 scale). This is because the analog output scales to the full 20 ppm range of the SM-X sensor chip, meaning that a 1V reading corresponds to 10 ppm. The correction is to scale your analog output from 0-20 ppm (4-20 mA output or 0-2V output).

  2. How long does the internal battery last?


How It Works

DL-2 Software

- View multiple parameters from one or more loggers on one graph
- Combine data from multiple deployments on one graph
- Copy-and-paste data from one plot onto another
- Zoom and axis-control tools to focus on data of interest
- Optional display of recorded events such as button push/release, host computer connection, and/or low battery in graphs or file exports

Last Updated: March 18, 2015

The above information is from and is copyrighted by Ozone Solutions Inc.
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