Hach-Lange POLYMETRON 9245 User Manual - Manual (Page 43)

41
Installation
4.4.3 Input/Output connections
1. Analog output – Iout 0 is used for the current signals of the measurement. Other analog
outputs can be freely linked to different parameters like measurement, temperature – refer
to the section entitled
User Setup on page 71 for details.
2. Relays – Rel 8 is linked to the system alarm and is normally energized. Rel 7 is linked to
the warning alarm. The position of the contact represented on the diagram above
corresponds to a state when the relay is not energized. See
Alarms on page 76 for more
information on the relays.
3. Logical Inputs (2) – one input allows the analyzer to be put on standby by providing 1 dry
circuit which will then be closed to place the analyzer on standby until that circuit is
re-opened. The second input is to launch the remote calibration (same principle as sample
measurement by-pass).
• - In 2 (on J32) for remote calibration
• - In 7 (on J38) to put the analyzer on standby
4. Close the I/O box.