Teledyne T300, Operation Manual, Page: 134 / 426

Setup Menu Teledyne API – Model T300/T300M CO Analyzer
132
An alternative method for measuring the output of the Current Loop converter is to
connect a 250 ohm
±
1% resistor across the current loop output in lieu of the current
meter (see Figure 3-9 for pin assignments and diagram of the analog output connector).
This allows the use of a voltmeter connected across the resistor to measure converter
output as VDC or mVDC.
V
+DC Gnd
Recording
Device
V IN +
V IN -
ANALYZER
V OUT +
V OUT -
250
Ω
Volt
Meter
Figure 5-6:
Alternative Setup Using 250Ω Resistor for Checking Current Output Signal Levels
In this case, follow the procedure above but adjust the output for the following values:
Table 5-8: Current Loop Output Check
% FS
Voltage across Resistor for
2-20 mA
Voltage across
Resistor for 4-20 mA
0 500 mVDC 1000 mVDC
100 5000 mVDC 5000 mVDC
06864B DCN6314