Baker Hughes Panametrics Sentinel LCT8, Руководство пользователя

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3.1.2 Indicator lights
The Sentinel LCT8 HMI includes the following indicator lights:
• The power indicator is normally lit when the instrument is
powered on.
• The keypad lock indicator is lit if the internal keypad
lock-out switch has been engaged.
NOTE: When the keypad lock indicator is lit, the keypad is
not functional.
• The totalizer lock indicator is lit if the internal totals
lock-out switch has been engaged.
NOTE: When the total lock indicator is lit, it is not possible
to reset totals with the Clear totals key or through
programming.
• If the fault indicator is lit, an instrument fault has been
detected. This will also cause an error indication to
be displayed in the lower right-hand corner of the
measurement view screen.
• If the user intervene indicator is lit, an alarm has been
triggered and will be kept latched until cleared by the
user. See Wiring the alarm relay on page 12 and
Inputs/outputs on page 53 for more information.
3.1.3 Totalizer hard switch
The security switches on the front display can be locked,
which will lock out the ability to do any programming
changes, even from a PC connected to meter, and the
totalizer only lockout, which will not allow anyone to reset the
totalizer, even from a PC connected to the meter. The front
window cover is screwed into place over the display.
Figure 34: Front cover screwed
The set screw in the cover can be screwed down to tight
up against the enclosure. With the set screw in place, the
lead and wire seal can be threaded through the channel
in such a way that access to loosen the set screw is
completely blocked.
Figure 35: Set screw tied with wire seal
All connections can be made through the back cover while
still protecting the key pad and the programming.
Figure 36: Back cover section
3.1.4 The magnetic stylus
Each of the keys can be selected using a hand-held magnet
called a magnetic stylus , which is included with the meter
(see Figure 37 below). By touching the clear window at a key
location, that key will be selected and will flash a red light to
verify the contact.
NOTE: The red LED does not flash if contact is not made.
Ensure the front cover is fully tightened.
Figure 37: Magnetic stylus
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