DL-3 Data Logger

  • Measures 4-20mA, DC voltage, temperature, and more
  • 12 bit resolution
  • 43,000 measurements (30 days @ 1 per minute)
  • Sampling rate: 1 sec to 18 hours
  • USB interface
  • PC Software & Instrument Connection Cable included
  • One year battery life
  • 58 x 74 x 22 mm (2.3″ x 2.9″ x .9″)
  • User friendly, for use with most Ecosensors instruments

The DL-3 is a custom modified data logger configured for Eco Sensors instruments and applications. It plugs into the accessory jack of the C-30ZX or the C-21 to log data without further adjustments. It can download logged data into a PC or laptop by its RS-232 serial cable, or it can send data continuously to the PC for continuous display and analysis by the PC.


  • Automatic logging time and max gas concentration scaling (X and Y axis scaling).
  • Stores over 8,000 readings.
  • On-line, real time display of data when connected to a PC and an operating gas sensing instrument.
  • Graph statistics appear on screen: Max, Min, Average, Date and Time.
  • Zoom capability to for more detailed viewing of any part of the graph.
  • Graphs can be labeled and pasted into other applications.
  • Uses readily available 9 V alkaline battery. Records for up to one year.
  • Simple operation and rugged construction.


  • Data Output: RS-232 via DB9 connector 1200 baud
  • Accuracy: 1%
  • Operating temperature: -20 deg to 70 deg C (-4 deg to 158 deg F)
  • Relative Humidity: 5 – 95% non-condensing
  • Operating System Required: Windows®
  • Controls: One button to start and stop recording and to turn the data logger on and off
  • Size: 73 × 59 × 41 mm (2.875 × 2.3125 × 1.625 in)

The Eco Sensors DL-3 data logger is a modified AEMC Instruments (Chauvin Arnaux) model L430. The modification is adapting the logger’s input to be compatible with the output plug of our instruments (a 3.5 mm "miniature stereo" 2 circuit plug), The  Eco Sensors instruments that work directly with the DL-3 logger are the C-21 and the C-30ZX. Some other Eco Sensors  instruments can be factory modified to work with the DL-3. Usually this is just adding a cable terminated with the 3.5 mm plug.  However, the scaling used should be reviewed with tech support at Eco Sensors.


Spec Sheet



More Information
Manufacturer Eco Sensors
Call For Price No
Warranty 1 Year
Monitor Type A-22, C-21, C-30ZX
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