The DL-3 data logger has been qualified for use with Eco Sensors’ instruments and applications. It connects to and logs data from the A-22, C-30ZX, C-21, OS-4, and OS‑6 via the DC Voltage or DC Current analog outputs on these instruments. Logged data can be stored on the DL-3 and later downloaded to a computer or it can sent continuously via USB cable and displayed on the computer. A new LCD screen confirms logger operation and displays near real-time measurement data.

A special cable ($75) is required for the DL-3 to interface with most Eco Sensors instruments. Please call to place your order.


  • Qualified for use with Eco Sensors’ instruments
  • Twice the accuracy over previous models
  • 16-bit resolution
  • Flexible support for a wide range of external sensors
  • LCD confirms logger operation and displays near real-time measurement data
  • Provides minimum, maximum, average, and standard deviation logging options
  • On-screen alarms notify you when a sensor reading exceeds set thresholds
  • Stores 1.9 million measurements for longer deployments between offloads
  • Simple operation and rugged construction


  • Data Output: RS-232 via DB9 connector 1200 baud
  • Accuracy: ±0.1 mV or ±0.1% of reading
  • Operating temperature: -20 °C to 70 °C (-4 °F to 158 °F)
  • Relative Humidity: 0 to 95%, non-condensing
  • Operating System Required: Windows®
  • Size: 1080 × 541 × 254 mm (4.25 × 2.13 × 1 in)
  • Weight: 108 g (3.8 oz)

Product manual PDF file (4kb) (requires Adobe Acrobat ™ reader)

Sku: DL-3

    Additional information

    Weight 2 lbs
    Dimensions 6 × 6 × 7 in

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