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Getting Started Teledyne API – Model T400 Photometric Ozone Analyzer
40
Table 3-3: Rear Panel Description
Component Function
cooling fan
Pulls ambient air into chassis through side vents and exhausts through rear.
AC power
connector
Connector for three-prong cord to apply AC power to the analyzer.
CAUTION! The cord’s power specifications (specs) MUST comply with the power
specs on the analyzer’s rear panel Model number label
Model/specs label
Identifies the analyzer model number and provides power specs
SAMPLE
Connect a gas line from the source of sample gas here.
Calibration gases are also inlet here on units with the zero/span valve option installed.
EXHAUST
Connect an exhaust gas line of not more than 10 meters long here that leads outside
the shelter or immediate area surrounding the instrument.
SPAN
On units with zero/span valve option installed, connect a gas line to the source of
calibrated span gas here.
ZERO AIR
Internal Zero Air: On units with zero/span valve option installed connect the source of
zero air here.
DRY AIR
On units with zero/span valve option installed connect the source of dry air here
(- <20C dew point).
RX TX
LEDs indicate receive (RX) and transmit (TX) activity on the when blinking.
COM 2
Serial communications port for RS-232 or RS-485.
RS-232
Serial communications port for RS-232 only
DCE DTE
Switch to select either data terminal equipment or data communication equipment
during RS-232 communication.
STATUS
For ouputs to devices such as Programmable Logic Controllers (PLCs).
ANALOG OUT
For voltage or current loop outputs to a strip chart recorder and/or a data logger.
CONTROL IN
For remotely activating the zero and span calibration modes.
ALARM
Option for concentration alarms and system warnings.
ETHERNET
Connector for network or Internet remote communication, using Ethernet cable.
ANALOG IN
Option for external voltage signals from other instrumentation and for logging these
signals.
USB
Connector for direct connection to laptop computer, using USB cable.
Information Label
Includes voltage and frequency specifications
06870C DCN6332