What are the voltage requirements for the Digital Inputs on the 5500sc Silica and Phosphate analyzer?

Document ID

Document ID TE3802

Published Date

Published Date 05/16/2018
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Question
What are the voltage requirements for the Digital Inputs on the 5500sc Silica and Phosphate analyzer?
Summary
Specifications for the TTL and Open Collector settings for the Digital Inputs on 5500sc
Answer
In the TTL configuration. a 3-30 VDC signal is applied to the terminals and this causes the analyzer to skip the sample stream correlating to that input.
 
 
If the jumpers are moved to change the inputs to be Open Collector inputs, the power is supplied by the analyzer and then you would only need a dry contact closure to cause the instrument to skip that stream.

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