Installation 3000ZA-3X
Teledyne
Analytical
Instruments
22
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
21
Range 1 ID Contact
38
Range 1 ID Contact
22
Range 2 ID Contact
39
Range 2 ID Contact
19
Range 3 ID Contact
18
Range 3 ID Contact
34
Spare
Contact
35
Spare
Contact
