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Notes – INFICON Sensistor Sentrac Hydrogen Leak Detector User Manual

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Notes

1) OUTNote on RS-232 communication: This system is a DCE device with only RXD,
TXD and GND. Remaining RS-232 signals are not implemented. A DB9-to-DB25
adapter can be used: then connect the DB25 male to this system (DCE) and connect
the DB9 female to the terminal device (DTE).

2) 2A = 24V + total Digital outputs current.

3) Nominal level = [0 ... +24] V

Maximum level = [-50 ... +50]V

Low-high threshold = appr. 8.5V

Input impedance = min 23kohm

Input functions selectable in the menu:

Unused

Start (I·Guide)

Stop (I·Guide)

Locating Signal Zeroing

External Alert (Error high)

4) Nominal level = [0 ... +24] V

Maximum sourcing current = 500mA

Output impedance = max 4ohm

Output functions selectable in the menu:

Unused

Reject

Accept (only I·Guide)

Calibrated

Not Ready

Gas Signal

Not Ready or Gas Signal

Error (summary error)

5) (Outputs)

Unused

Reject

Accept

Calibrated

Not Ready

Gas Signal

Not Ready or Gas Signal

Error (summary error)

6) (Inputs)

Unused