TELEDYNE API T300, Руководство по эксплуатации

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Getting Started Teledyne API – Model T300/T300M CO Analyzer
40
Output A3 is only used on the T300/T300M if the optional CO
2
or O
2
sensor is installed.
Channel A4 is special. It can be set by the user (see Section 5.9.8.1) to output any one
of the parameters accessible through the <TST TST> buttons of the units sample
display.
To access these signals attach a strip chart recorder and/or data-logger to the appropriate
analog output connections on the rear panel of the analyzer.
ANALOG OUT
A1 A2 A3 A4
+ - + - + - + -
Figure 3-9: Analog Output Connector
Table 3-5: Analog Output Pin-Outs
PIN ANALOG OUTPUT VOLTAGE SIGNAL CURRENT SIGNAL
1
A1
V Out I Out +
2 Ground I Out -
3
A2
V Out I Out +
4 Ground I Out -
5 A3
(Only used if CO
2
or
O
2
Sensor is
installed)
V Out I Out +
6 Ground I Out -
7
A4
V Out I Out +
8 Ground I Out -
3.3.1.4. CURRENT LOOP ANALOG OUTPUTS (OPTION 41) SETUP
If your analyzer had this option installed at the factory, there are no further connections
to be made. Otherwise, it can be installed as a retrofit for each of the analog outputs of
the analyzer. This option converts the DC voltage analog output to a current signal with
0-20 mA output current. The outputs can be scaled to any set of limits within that 0-20
mA range. However, most current loop applications call for either 2-20 mA or 4-20 mA
range.
Figure 3-10 provides installation instructions and illustrates a sample combination of
one current output and two voltage outputs configuration. Following Figure 3-10 are
instructions for converting current loop analog outputs to standard 0-to-5 VDC outputs.
Information on calibrating or adjusting these outputs can be found in Section 5.9.3.7.
06864D DCN7562