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Data Dolphin Model 200


  • 5 10-bit Single Ended Analogs
  • Solar / Battery / AC Power Operation
  • DC/Current/Frequency/Status Recorder
  • ANSI 12.18, and MODBUS
  • Non-Volatile Flash Memory
  • Universal Sensor Interface Now Supporting SDI-12
  • Remote Wireless Data Logging



he Data Dolphin provides the accuracy of a laboratory instrument in the harsh conditions of the field environment. The standard resolution 12 bit analog to digital section provides 5 single ended input resolution down to 1 microvolts (.000001 volts). This allows many sensors to be directly connected without any signal conditioning. It's wide range of input voltages allows for you to attach a wide range of different input types. There are an additional four inputs that can be user selected as pulse, status, event start/stop or analog inputs.

Data is stored in a non-volatile flash memory module that gives long term storage without the fear of losing your data because of dead batteries. Data is stored inside a database structure, which allows you to add or delete inputs "on the fly" without having to restart the datalogger. Even the sample rate can be changed without restarting.

Designed for field use it’s operating temperature range goes from - 40°C to over 75°C and all inputs have static protection. It is powered internally by three "C" size alkaline batteries, however there is an adapter input for 120 VAC operation or an external 12 volt source such as a rechargeable battery and/or solar panel can be connected. The Data Dolphin’s extremely low operating current gives the datalogger an expected battery life of approximately 3 years (5 min sample rate).

Data collection, programming and viewing collected data is a breeze with the Data Dolphin Software. It allows you to view the current status, setup the logger, and generate graphs. You can also export your data to other programs for more detailed analysis and presentations. Support for ANSI 12.18, Modbus, and Internet protocols

Part Numbers


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Maximum Input Voltage: 0 V to +2.5 V (0-20mA)
Analog Voltage Resolution: 1 µV
A/D Bits: 10
Input Impedance: 1 Mohm
Excitation Channels: 2
Excitation Voltage 1: +2500 mV
Excitation Voltage 2: +5000 mV

  • 5 - 10bit Single Ended Analogs or 4 Differentials or Combination of both (1 Differential = 2 Analogs)
  • 4 - Counter/Status
Power Requirements

Quiescent Current: < 400 µAmp (Typical)
Processing Current: 3 mA


Flash Memory: 4 MB
Data Values: 233,472 (1 Precision Input)

Case Material

Extruded Aluminum


Size (cm) 15.49 x 7.62 x 8.89
Size (inches) 6.1 x 3 x 3.5
Weight DD-400 with radio module, battery and antenna 0.918kg (2.024lbs)
DD-400 with battery pack only 0.778kg (1.715)
DD-400 alone 0.564kg (1.243lbs)

Operating Temperature Range

Standard -40 to +60°C
Extended -55 to +80°C