Teledyne 3300ZB - Low-cost Zirconium Oxide Oxygen Analyzer - 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