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Model 9110TH NOx Analyzer Setup Menu
Teledyne Analytical Instruments 127
An alternate 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 3-8 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
Figure 5-8: 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
5.9.3.8. TURNING AN ANALOG OUTPUT OVER-RANGE FEATURE ON/OFF
In its default configuration, a ± 5% over-range is available on each of the 9110T’s analog outputs. This
over-range can be disabled if your recording device is sensitive to excess voltage or current.
To turn the over-range feature on or off, select the ANALOG I/O CONFIGURATION submenu (see
Figure 5-5) then press: