Electrical I/O Connections; Location Of I/O Connectors In The Nema Configuration; Analog Output; Status Outputs - Teledyne 465L Operation Manual

Ozone monitor

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4.4.

Electrical I/O Connections

In the NEMA configuration of the 465L, the I/O connectors are located internally in

the instrument. See Figure 4-7 for their location. The relative position of the

connectors and the pinout information is the same as the Rack-Mount configuration

shown in Figure 4-6. Connection to these terminals is usually made via a conduit

connection to the NEMA enclosure. A standard conduit penetration may be added

to one of the walls of the enclosure for this purpose, or the existing penetration may

be used.

The analog output is located at the "General I/O" connector (See Figure 4-6) and is

labeled "ANA." The analog output can be configured for 0-5V voltage or 4-20 mA

current output. See Section 9.8 for details on verifying or changing the analog

output hardware configuration.

The analog output is automatically scaled to the range of the instrument, i.e. if the

monitor range is 1000 PPB, then 5V would correspond to 1000 PPB and 0V would

correspond to 0 PPB. See Section 7.2.7 for information on changing the range of

the monitor.

The 465L has an analog output step-test mode that can be used for verifying the

operation of the analog output and calibration of external measurement equipment.

This mode is described in Section 7.2.3.1.

There are four instrument status outputs located at the "General I/O" connector.

These status outputs mirror the state of the four diagnostic LEDs on the front panel.

Electrically these outputs are SPST dry contact relay closures with a common

contact, labeled 'C' on the rear panel. They are capable of switching up to 50 VDC,

250mA maximum current. There are no polarity requirements, so the outputs can be

used to sink or source current from the 'C' pin, within the maximum voltage and

current specified. Schematically, the outputs look as shown in Figure 4-8 below:

05509G DCN6806

Teledyne API Model 465L O 3 Monitor Operation Manual

Teledyne API Model 465L O

Monitor Manual

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