Teledyne 3300ZB - Low-cost Zirconium Oxide Oxygen Analyzer User Manual
Page 22

Installation Model
3300ZB
Teledyne Analytical Instruments
12
The specific descriptions for each type of alarm are as follows:
HI Alarm
Configured as high alarm (actuates when
concentration is above threshold). Can be set
anywhere within the full range of the analyzer (1-
1,000 ppm), but must be set ABOVE the threshold set
for the LO Alarm.
LO Alarm
Configured as low alarm (actuates when
concentration is below threshold) within the full
range of the analyzer (1-1,000 ppm), but must be set
BELOW the threshold set for the HI Alarm.
Sensor Fail
Not active in this product
Figure 3-2: Contact ID for FAILSAFE Relay Operation
RS-232 Port: The digital signal output RS-232 port is offered as a cost
added option on the Model 3300ZB. It is a standard RS-232 serial
communications port used to connect the analyzer to a modem or other
digital device. The connector is a standard 9-pin serial connector. Pin-
outs are listed in Table 3-1.
Table 3-1: RS-232 Signals
RS-232 Sig
RS-232 Pin
Purpose
RD 2
Received
Data
TD 3
Transmitted
Data
COM 5
Common
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