Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 156)

Model 9110TH NOx Analyzer Operating Instructions
Teledyne Analytical Instruments 136
 As before, adjustment of the output is performed until the current reading of
the meter reaches the desired point (e.g. 2 mA, 4 mA, 20 mA, etc.)
mA
IN OUT
I OUT +
I OUT -
I IN +
I IN -
Recording
Device
Analyzer
See Table 3-2 for
pin assignments of
the Analog Out
connector on the
rear panel.
Current
Meter
Figure 4-12: Setup for Calibrating Current Outputs
Note Do not exceed 60 V between current loop outputs and instrument ground.
If a current meter is not available, an alternative method for calibrating the current loop
outputs is to connect a 250
 1% resistor across the current loop output. Using a
voltmeter, connected across the resistor, follow the procedure above but adjust the
output to the following values:
V
+DC Gnd
Recording
Device
V IN +
V IN -
ANALYZER
V OUT +
V OUT -
250 O
Volt
Meter
Figure 4-13: Alternative Setup for Calibrating Current Outputs