Teledyne 7300A manual Range ID Relays, Network I/O, Remote Valve Connector

Infrared Gas Analyzer Installation 2

2.3.3.4Range ID Relays

Four dedicated Range ID relay contacts. For any single application they are assigned to relays in ascending order. For example: if all ranges have the same application, then the lowest range is assigned to the Range 1 ID relay, and the highest range is assigned to the Range 3 ID relay. Range 4 is the Cal Range ID relay. Table 2-7 lists the pin connections.

Table 2-7: Range ID Relay Connections

Pin Function

21Range 1 ID Contact

38Range 1 ID Contact

22Range 2 ID Contact

39Range 2 ID Contact

19Range 3 ID Contact

18Range 3 ID Contact

34Range 4 ID Contact

35Range 4 ID Contact

2.3.3.5Network I/O

A serial digital input/output for local network protocol. At this printing, this port is not yet functional. It is to be used in future options to the instru- ment. Pins 13 (+) and 29 (–).

2.3.3.6Remote Valve Connector

The 7300A is a single-chassis instrument, which has no Remote Probe Unit. Instead, the Remote Valve connector is used as another method for controlling external sample/zero/span gas valves. See Figure 2-5.

Figure 2-5: Remote Probe Connector Pinouts

Teledyne Analytical Instruments 2-9