The AM25T 25-Channel Solid State Multiplexer increases the number of thermocouples that you can measure using a Campbell Scientific data logger. The multiplexer interfaces with the data logger and adds terminals so that you can wire additional thermocouples or other low-level voltage output sensors.
Up to 25 thermocouples are sequentially connected to a common differential channel on the AM25T. (Note: Other lowlevel voltage output sensors that do not exceed the common mode range of the data logger can also be measured. The AM25T should NOT be used to measure resistive bridges or configured with a voltage divider between the AM25T and the data logger; ask about our AM16/32B multiplexer for these applications.) The output from this channel is wired to a differential input channel on the data logger. As the AM25T sequentially changes channels, the data logger measures the output from each thermocouple in sequence.