YSI DIQ/S 182 XT-4 System 182 XT-4 - Manual (Page 100)

Outputs System 182 XT-4
6 - 8 ba76026e01 01/2012
6.3.3 Proportional output
In the case of proportional output, a relay switches cyclically on and off
in a defined measured value range (proportional range). At the same
time, the relay switches with a:
 duration of operation that corresponds to the measured value
(pulse-width output, see page 6-10) or
 switching frequency (frequency output, see page 6-11).
Proportional outputs can be used in the following way:
 Output with one relay:
An output range is defined with a Start value and an End value.
No output takes place above and below the output range (see page
6-9).
 Output with two relays:
An output range is defined for each relay with a Start value and an
End value. One relay outputs in the upper output range and a further
relay in the lower output range (see page 6-9).