Dataloggers - DL2e, CR1000. Self contained dataloggers with internal memory and sensor signal processing. Analog signals are conditioned, processed and computed into engineering or scientific units.  All dataloggers come with very sensitive input channels (to 1 uV or better), a variety of digital counting and logic inputs and the ability to control many processes automatically.  All have auto rangeing or programmable input ranges for a variety of differential or single ended channels. The logger choice depends on complexity of the task, the control outputs needed and the expandability required. 

General purpose system logger, fully assembled - DNX1K based Self contained logger for 32 sensor capacity, including: 32 Channel multiplexer, 8 Control Ports, 4 exitation channels RS-232 interface, 9 Pin to PC COM1, Windows based data retrieval and analysis software, battery and charger (110 V, 60 Hz or 220 V, 50 Hz), and a fiberglass Encosure with two outlets and PVC adaptors. Requires selection of probes, cables and a PC to make a complete system. Solar Panels are optional.