E C O P H Y S I C S Measurement principle
CLD 780 TR / July 2000 23
[13] allows total remote access to all programmable functions of the in-
strument.
Interface board: (IFNOX)
The measurement values for NO, NO.c and NO
2
are available through
three separate analog output channels [14]. Only those data values
which are currently actually being measured are output to the interface.
See 5.2.2.2. The three channels can be set for one of the following opera-
tional modes: 0-1 V, 0.2-1 V, 0-10 V, 2-10 V, 0-20 mA and 4-20 mA. The
mode is software selectable, and is always the same for all three chan-
nels.
Furthermore the instrument has one digital, optically isolated input and
two such outputs for possible process control purposes [15]. Additional in-
formation about digital and analog outputs are listed in chapter 2 “Speci-
fications“.
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