How do the AM25T and the AM16/32B compare with regard to their relays?

The differences between the mechanical relays on the AM16/32B and the solid-state relays on the AM25T are noteworthy with regard to switching time, voltage and current levels, power consumption, and relay activation noise.

  • Solid-state relays switch faster than mechanical relays. The solid-state relays on the AM25T have a maximum activation time of less than 1 ms, whereas the slower AM16/32B mechanical relays have a maximum activation of 20 ms. This is an important aspect to consider in high sample rate applications of a large number of channels.
  • The mechanical relays on the AM16/32B multiplexer are rated for handling higher voltage and current levels than the solid-state relays on the AM25T.
  • The power consumption for the mechanical relays on the AM16/32B multiplexer is significantly greater than that of the solid-state relays on the AM25T.
  • The mechanical relays on the AM16/32B multiplexer make a distinct clicking sound when closing. In contrast, the solid-state relays on an AM25T are silent. The sound of mechanical relays may be annoying to humans or animals at the installation site. In some applications, the clicking sound of the relays can be a beneficial indicator that measurements are being performed.

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