Teledyne BDS-3960 ユーザーズマニュアル

ページ / 76
Oxygen Analyzer 
Installation
Teledyne Analytical Instruments
37
Zero:
 
Floating input—5 to 24 V input across the + and – pins
puts the analyzer into the Zero mode. Either side may be
grounded at the source of the signal. 0 to 1 volt across the
terminals allows Zero mode to terminate when done. A
synchronous signal must open and close the external zero
valve appropriately. See Remote Probe Connector. (The
–C option internal valves operate automatically).
Span:
 
Floating input—5 to 24 V input across the + and – pins
puts the analyzer into the Span mode. Either side may be
grounded at the source of the signal. 0 to 1 volt across the
terminals allows Span mode to terminate when done. A
synchronous signal must open and close external span
valve appropriately. See Figure 3-5 Remote Probe
Connector. (The –C option internal valves operate
automatically.)
Cal Contact:
 
This relay contact is closed while analyzer is spanning
and/or zeroing. (See Remote Calibration Protocol below.)
Table 3-3: Remote Calibration Connections
Pin
Function
9
+ Remote Zero
11
– Remote Zero
10
+ Remote Span
12
– Remote Span
40
Cal Contact
41
Cal Contact
Remote Calibration Protocol: To properly time the Digital Remote Cal
Inputs to the Model BDS 3960 Analyzer, the customer's controller must
monitor the Cal Relay Contact.