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Teledyne API – Technical Manual - Model 300E Family CO Analyzers Troubleshooting & Repair
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13.5.7.3. Analog Outputs: Current Loop
To verify that the analog outputs with the optional current mode output are working properly, connect a 250 ohm
resistor across the outputs and use a voltmeter to measure the output as described in Section 7.4.3.4 and then
perfo
rm an a
nalog output step test as described in Section 13.5.7.2.
For each
step the output should be within 1% of the nominal value listed in the table below.
Table 13-11: Analog Output Test Function - Nominal Values Voltage Outputs
OUTPUT RANGE
2 -20 4 -20
NOMINAL OUTPUT VALUES
STEP % CURRENT V(250 OHMS) CURRENT V(250 OHMS)
1 0 2 mA 0.5V 4 1
2 20 5.6 1.4 7.2 1.8
3 40 9.2 2.3 10.4 2.6
4 60 12.8 3.2 13.6 3.4
5 80 16.4 4.1 16.8 4.2
6 100 20 5 20 5
04288D DCN5752