Teledyne 9110T - Nitrogen Oxides Analyzer User Manual
Page 127
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: