YSI IQ SensorNet DIQ/CR3 - Manual (Page 16)

Settings MIQ/CR3; DIQ/CR3
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4.1 Basic information on relay functions
In this chapter, you will find general basic information concerning the
following relay functions:
 Monitoring (see section 4.1.1)
 Limit indicator (see section 4.1.2)
 Proportional output (see section 4.1.3)
4.1.1 Monitoring
When using a relay for monitoring, a relay action (Open, Close) occurs
when certain states occur. This function is suitable, e.g. for the
monitoring of errors in the system.
Note
For monitoring functions, use the relay preferably as an opener (see
section 4.5.1). In the case of an error, the relay opens. As a result, the
monitoring function operates even if, e.g. the supply voltage fails.