Teledyne 9110T Turning AN Analog Output OVER-RANGE Feature ON/OFF, Current Loop Output Check

Model 9110TH NOx Analyzer Setup Menu

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	Voltage across
	Resistor for 2-20 mA	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:

Teledyne Analytical Instruments 127