Chapter Seven: Operation in Setup Mode
Code 16x: How To Set the HC Shutoff Features
239
Code 16x: How To Set the HC Shutoff Features
RIGHT DISPLAY
This display shows the state of
the internal fast rate-of-rise shutoff
feature. This feature is built into
your 146 hardware.
The screen lists off for disabled
or on for enabled.
TORR
SETUP
CODE
LEFT DISPLAY
The code number is displayed
and edited here.
In this example, the code
number is 16x, where x
represents the channel
number of the hot cathode.
MAIN DISPLAY
This is the hot cathode high
pressure shutoff limit.
Figure 80: Code 16x Display
This function applies to hot cathode gauges only.
The x in the code number represents the channel number for the hot cathode. The user-defined
high pressure shutoff value is used to protect a hot cathode from potential damage if the pressure
rises too high. When the gauge is turned off with this function, three dots ( . . . ) appear in the
hot cathode channel display. The gauge must be turned back on manually.
The internal fast rate-of-rise shutoff feature is built into the hardware of the 146 unit. It monitors
the pressure signal for a rapid increase. Most gauges are shut down around 10 to 100 mT in the
event of a rapid pressure rise, and the error code E1 appears in the hot cathode channel display.
To turn the hot cathode back on, the channel must first be turned off. When turned off, three dots
( . . . ) appear in the hot cathode channel display. The channel can then be turned back on.
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