TELEDYNE OLDHAM SIMTRONICS Everywhereyoulook DG-TT7-K, Operating Manual

Page: 49 / 72

MULTIXPLO AND MULTITOX DETECTORS
OPERATING MANUAL
NOSP17665
Revision 02a
43
6.8.8 Sous-menu [NEG] Concentration négative
The detector can display the negative concentration. There is no sense from a point of physical
view but it allows to prevent a zero drift and to have a preventive maintenance before the zero
drift fault.
When the negative concentration is activated, the 4-20 mA output current is 3.2 mA when the
detector displays -5% of full scale.
At factory setting, the negative concentrative is deactivated.
6.9 Maintenance menu [MAIN]
The maintenance menu allows the user to check if the detector is in normal operation conditions
•
(Test of the relay and current outputs).
6.9.1 [TEST] sub-menu
6.9.1.1 Relay menu
This menu gives access to activation or deactivation of the relays.
The detector goes to inhibition mode. The detector will stay in inhibition mode if the user goes
back through the steps to the main menu. Otherwise, the detector will return to its “current” state.
6.9.1.2 The 4-20 mA screen
This menu allows the output current to be set at a chosen value. The possible output values are:
1.5 mA, 2mA, 4mA, 8mA, 12mA, 16mA, 20mA or 22mA.
During this phase, the detector goes automatically to inhibition mode. The detector will stay in
inhibition mode if the user goes back through the steps to the main menu. Otherwise, the detector
will return to its “current” state.
6.9.2 NETWORK sub-menu
This menu gives direct access to different tests for the network. For any further details, please refer
to the additional network operating manual:
•
SPIN sends the detectors network identification.
•
LIEN switches from normal mode to logic link mode.
•
SWITCH enables the switches to go on mode open/closed/open secured.