Table of Contents
Advertisement
Section II Operating Instructions
3.3.1.4. CURRENT LOOP ANALOG OUTPUTS (OPTION 41) SETUP
34
Teledyne API T802 Paramagnetic O
Channel A4 is special. It can be set by the user (see Section 5.9.6) to output any
one of the parameters accessible through the <TST TST> buttons of the unit's
Sample display.
To access these signals attach a strip chart recorder and/or data-logger to the
appropriate analog output connections on the rear panel of the analyzer.
Figure 3-7:
Table 3-5:
Analog Output Pin-Outs
PIN
ANALOG OUTPUT
1
2
3
4
5
(Only used if CO
6
sensor is installed)
7
8
This option adds isolated, voltage-to-current conversion circuitry to the
analyzer's analog outputs. If your analyzer had this option installed at the
factory, there are no further connections to be made. Otherwise, it can be installed
as a retrofit for each of the analog outputs of the analyzer . This option converts
the DC voltage analog output to a current signal with 0-20 mA output current.
The outputs can be scaled to any set of limits within that 0-20 mA range.
However, most current loop applications call for either 2-20 mA or 4-20 mA
range. All current loop outputs have a +5% over-range. Ranges with the lower
limit set to more than 1 mA (e.g., 2-20 or 4-20 mA) also have a -5% under-range.
Figure 3-8 provides installation instructions and illustrates a sample combination
of one current output and two voltage outputs configuration. The section
following this provides instructions for converting current loop analog outputs to
standard 0-to-5 VDC outputs. Information on calibrating or adjusting these
outputs can be found in Section 5.9.3.7.
ANALOG OUT
A1
A2
A3
+
-
+
-
+
-
Analog Output Connector
VOLTAGE SIGNAL
V Out
A1
Ground
V Out
A2
Ground
A3
V Out
2
Ground
V Out
A4
Ground
Analyzer Operation Manual
2
A4
+
-
CURRENT SIGNAL
I Out +
I Out -
I Out +
I Out -
I Out +
I Out -
NA
NA
07275B DCN6418
Advertisement
Table of Contents
