Gas Connections - Teledyne 3300PB Operating Instructions Manual

Percent Oxygen Analyzer
3.3.1 RS-232 Port Option
The digital signal output is a standard RS-232 serial communications
port used to connect the analyzer to a computer, terminal, or other digital
device. The pinouts are listed in Table 1.
The data sent is status information, in digital form, updated every two
seconds. Status is reported in the following order:
•
•
Each status output is followed by a carriage return and line feed.
The RS-232 protocol allows some flexibility in its implementation.
Table 2 lists certain RS-232 values that are required by the 3300PB imple-
mentation.
3.4
The standard Model 3300PB has two inlets and one outlet fixture only.
Calibration gasses can be connected into the "Span" inlet. All of the sample
connections are 1/8 inch brass fittings.
Table 1: RS-232 Signals
RS-232 Sig RS-232 Pin
RD
TD
COM
The concentration in percent
The range in use
Table 2: Required RS-232 Options
Parameter
Baud
Byte
Parity
Stop Bits
Message Interval
The RS232 terminals must not be connected
to any AC line source, or any source of
hazardous voltage.

Gas Connections

Teledyne Analytical Instruments
Purpose
2 Received Data
3 Transmitted Data
5 Common
Setting
2400
8 bits
none
1
2 seconds
Installation 3
3-5