Comparing Data Acquisition & Control Units
Which of our data acquisition units to choose?
Our most popular units connect either via USB - the 700 Series, or Ethernet - the 800 Series. All units use Windmill software. You can also add most devices communicating over RS232, S422, RS485 and Modbus. In this case the maximum speed in 5 samples per second per channel.
Data acquisition units compared
| Microlink 751 | Microlink 851 | Microlink 752 | Microlink 770 | |
|---|---|---|---|---|
| Communication | USB | Ethernet | USB | USB |
| Analogue Inputs | 16 | 16 | 16 | 16 |
| Analogue Outputs | - | - | 2 | - |
| Digital I/O | 32 | 32 | 24 | - |
| Counters | 8 | 8 | 8 | - |
| Max Analogue Speed * | 80 Hz | 80 Hz | 80 Hz | 100 kHz |
| Max Speed per Analogue Channel * | 20 Hz | 20 Hz | 20 Hz | |
| Digital Speed | 160 Hz | 160 Hz | 160 Hz | - |
| Voltage | y | y | y | y |
| Current with 590-8A unit | y | y | y | y |
| Thermocouples with 593 unit | y (751-TC) | y (851-TC) | y | y |
| RTD, Pt100 and Thermistors | - | - | y | - |
| Resistance | - | - | y | - |
| Strain with 594 unit | y (751-SG) | y (851-SG) | y | y |
| pH with pH-Box | y (751-pH) | y (851-pH) | y | - |
| Pre-trigger data capture | - | - | - | y |
| Integrate Non-Microlink RS232, RS485, Ethernet and Modbus devices | y | y | y | - |
| Software included | Windmill | Windmill | Windmill | Windmill with Streamer |
* Notes on Speed of Sampling
Where the maximum analogue speed is quoted, this is for all channels. If the maximum speed was 80 Hz for example, and you were recording 3 strain channels and 2 temperature channels, the maximum speed per channel would be 16 samples per second.
When using Windmill with non-Microlink serial instruments - RS232 or Modbus for example - then the maximum speed per channel is 5 readings per second.
Learn More
Find out more - contact sales@biodataltd.com or see our DAQ shop. For tips on specifying a data acquisition system and what factors to consider, see Monitor issue 194.
