Teledyne 6200T - Sulfides Analyzer - Manual (Page 98)

Setup Menu Model 6200T Total Sulfur Analyzer
Teledyne Analytical Instruments 98
5.4.1. Available Analog Output Signals
The analyzer has three active analog output signals, accessible through a connector on
the rear panel.
Test output
ANALOG OUT
A1 A2 A3 A4
+ - + - + - + -
SO
2
concentration
outputs
HIGH range when
DUAL mode is selected
(not used in
standard
configuration)
LOW range when
DUAL mode is selected
Figure 5-2: SETUP – Analog Output Connector
All three outputs can be configured either at the factory or by the user for full scale
outputs of 0.1 VDC, 1VDC, 5VDC or 10VDC. Additionally A1 and A2 may be
equipped with optional 0-20 mA DC current loop drivers and configured for any current
output within that range (e.g. 0-20, 2-20, 4-20, etc.). The user may also adjust the signal
level and scaling of the actual output voltage or current to match the input requirements
of the recorder or data logger (Refer to Section 6.9.4.3 and 6.9.4.5).
In its basic configuration, the A1 and A2 channels of the 6200T output a signal that is
proportional to the SO
2
concentration of the sample gas. Several operating modes are
available which allow:
 Single range mode (SNGL Mode, refer to Section 6.7.4): Both outputs are
slaved together and will represent the same concentration span (e.g. 0-50
ppm); however their electronic signal levels may be configured for different
ranges (e.g. 0-10 VDC vs. 0-.1 VDC – Refer to Section 6.9.4).
 Dual range mode(DUAL mode, refer to Section 6.7.5): The two outputs
can to configured for separate and independent units of measure and
measurement spans as well as separate electronic signal levels.
 Auto range mode (AUTO mode, refer to Section 6.7.6) gives the analyzer
the ability to automatically switch the A1 and A2 analog outputs between
two ranges (low and high) dynamically as the concentration value
fluctuates.
EXAMPLE:
A1
OUTPUT: Output Signal = 0-5 VDC representing 0-1000 ppm concentration values
A2 OUTPUT: Output Signal = 0 – 10 VDC representing 0-500 ppm concentration values.
A3 OUTPUT: Test channel; e.g., PMT signal = 0-5V
Output A4 is not available on the 6200T Analyzer in standard configuration.
5.4.2. Physical Range versus Analog Output Reporting Ranges
The entire measurement range of the 6200T is 0 – 20,000 ppb, but many applications
use only a small part of the analyzer’s full measurement range. This creates two
performance challenges:
The width of the 6200T’s physical range can create data resolution problems for most
analog recording devices. For example, in an application where the expected