GB
CALIBRATION MSA
20 ULTIMA
®
X
3 TM
5.1. Optional RESET button
ACKNOWLEDGE
PUSHBUTTON
J10
Fig. 5 RESET Button Wiring
1 Normally Open Switch
The RESET push button must be installed remotely and not directly into
the Ultima X cable gland entry. The switch must be fitted in an approved
junction box and be ATEX approved for hazardous area use.
The optional RESET button is to allow latching relays to be reset at the gas
monitor location.
The RESET push-button must be a normally open type with a momentary contact
when pressed and have electrical ratings of at least 1 A at 250 V AC.
Latching relays can be configured using the ULTIMA/ULTIMA X Series Controller.
In the "latching" configuration, when the RESET button is pressed, any latched
alarm will be reset providing the gas concentration that activated the alarm is
below the alarm set-point. In the "non- latching" configuration, the RESET button
has no effect on the alarms.
The RESET function can also be executed by an infrared command
from the ULTIMA/ULTIMA X Series Controller
(Æ ULTIMA/ULTIMA X Series Controller and Calibrator Operating
Manual).
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