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MAN0448_Issue 13_01-2010
005704-M-5001 A03249
CHAPTER 6 - OPERATING INSTRUCTIONS
4.2
Timeout
When operating the Engineering Card without an Engineering Key fitted
there is a timeout period of 30 seconds. If no push-buttons are pressed
within the timeout period, the selected channel card will automatically
be deselected.
4.3
Bargraph Display
When operating the Engineering Card without an Engineering Key fitted,
the selected channel's bargraph display will continue to indicate the
actual gas reading during the operation of the available Engineering
Card functions.
4.4
Catalytic Sensor Bridge Current
The operation associated with the BEAD mA push-button only applies
to catalytic channel cards. Operating this push-button with other types
of channel cards selected has no effect and the warning message
(xxxx) is displayed for a short time.
To enter the catalytic sensor bridge current operation, proceed as
follows:
(1)
Push and hold the required channel card RESET/
SElECT push-button for approximately 1.5 seconds
until the selected icon appears on the channel
display.
(2)
Use the Engineering Card ( ) and ( ) push-buttons
to select the required channel.
(3)
Push the BEAD mA push-button and the selected
channel card display will indicate the configured
bridge current. eg. 200mA alternating with the selected
channel number.
(4) Push the reject ( ) push-button or wait 30 seconds to
exit the Bead mA mode.
4.5
View Alarm level Settings
The operation of the AlARMS push-button allows the viewing of the
alarm threshold point and alarm type (rising or falling) for each alarm
set point A1, A2 and A3.
To enter the alarm view operation, proceed as follows:
6-7
5704 Control System
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