Teledyne 3000ZA-3X - Trace oxygen analyzer User Manual

Page 34

Installation 3000ZA-3X

Teledyne

Analytical

Instruments

Once a zero or span command is sent, and acknowledged (contact

closes), release it. If the command is continued until after the zero or
span is complete, the calibration will repeat and the Cal Relay Contact
(CRC) will close again.

For example:

1. Test the CRC. When the CRC is open, send a zero command

until the CRC closes (The CRC will quickly close.)

2. When the CRC closes, remove the zero command.
3. When CRC opens again, send a span command until the

CRC closes. (The CRC will quickly close.)

4. When the CRC closes, remove the span command.

When CRC opens again, zero and span are done, and the sample is

being analyzed.

Note: The Remote Valve connections (described below) provides

signals to ensure that the zero and span gas valves will be
controlled synchronously. If you have the –C Internal valve
option—which includes additional zero and span gas
inputs—the 3000ZA automatically regulates the zero, span
and sample gas flow.

Range ID Relays: There are four dedicated Range ID relay contacts. The
first three ranges are assigned to relays in ascending order—Low range is
assigned to Range 1 ID, Medium range is assigned to Range 2 ID, and
High range is assigned to Range 3 ID. Table 3-4 lists the pin connections.

Table 3-4: Range ID Relay Connections

Pin Function

Range 1 ID Contact

Range 2 ID Contact

Range 3 ID Contact

Spare

Contact

Spare

Contact