Range Id Relays; Network I/O - Teledyne 2010A Operating Instructions Manual

3 Installation
When the contact is CLOSED, the analyzer is already calibrating. It
will ignore your request to calibrate, and it will not remember that request.
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.
When the contact is closed, the display would display the last reading
of the gas concentration value and output signal would output the last read-
ing from the sample gas (SAMPLE and HOLD).
For example:
1) Test the CRC. When the CRC is open, Send a zero command
until the CRC closes (The CRC will close quickly.)
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 close quickly.)
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 Probe connector (paragraph 3.3.9) provides sig-
nals to operate the zero and span gas valves synchronously.
However, if you have the –C, -P, or -Q Internal valve option,
which includes zero and span gas inputs, the 2010A automati-
cally selects the zero, span and sample gas flow.

3.3.6 Range 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.

3.3.7 Network I/o

A serial digital input/output for local network protocol. At this print-
ing, this port is not yet functional. It is to be used in future versions of the
instrument.
3- Part I
Teledyne Analytical Instruments
Model 2010A