Digital Remote Cal Inputs - Teledyne 2020 Operating Instructions Manual

Thermal conductivity analyzer
Table of Contents

Advertisement

Thermal Conductivity Analyzer
Further detail can be found in chapter 4, section 4-5.

3.3.6 Digital Remote Cal Inputs

Accept 0 V (off) or 24 V dc (on) inputs for remote control of calibra-
tion. (See Remote Calibration Protocol below.)
Zero:
Span:
Actuates when self test fails.
To reset a system alarm, call out the set up menue
by scroll keys. Use UP/DOWN key to select
STANDBY function. Turn off analyzer by pressing
ENTER key. Turn analyzer back on by selecting
any key. Set ESC key twice.
DANGEROUS VOLTAGES MAY STILL BE
PRESENT AT THIS TERMINALS EVEN IF POWER
TO THE INSTRUMENT IS REMOVED.
Figure 3-5: Types of Relay Contacts
Floating input. 5 to 24 V input across the + and – terminals
puts the analyzer into the Zero mode. Either side may be
grounded at the source of the signal. A synchronous signal
must open and close the external gas control valves appro-
priately. See 3.3.9 Remote Probe Connector. (With the –C
option, the internal valves operate automatically.)
Floating input. 5 to 24 V input across the + and – terminals
puts the analyzer into the Span mode. Either side may be
grounded at the source of the signal. A synchronous signal
must open and close the external gas control valves appro-
Teledyne Analytical Instruments
Installation 3
3-7

Advertisement

Table of Contents
loading

Table of Contents