Ashcroft 2274 XAO Manual de instrucciones - Página 7
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MENU FUNCTIONS
Step 3: press ENTER. The current setting (ENAB or dISAB)
will be displayed.
Step 4: Press the
(up arrow key) or
key) on the keypad to select a setting.
Step 5: Press ENTER To finalize the setting.
GRAPH: This option allows the user to change the BAR
graph on the gauge display to correspond to any desired
pressure within the pressure limits of the gauge. This
option is useful when identifying a select portion of the
full-scale range of the gauge. The default setting for the
GRAPH is zero and full-scale pressure. For compound
gauges, the default setting for zero is set at full-scale vacu-
um. Full-scale pressure is set at the positive pressure as
displayed on the gauge keypad.
For gauges supplied with the 4-20mA output option, the
default is 4mA equals 0% of the bar graph and 20 mA
equals 100% of the bar graph.
Changing the bar graph to a pressure other than 0 and
100% of range will also change the 4-20mA output to cor-
respond with the new bar graph pressures for 0 and 100% .
To use GRAPH option:
Step 1: Press the MENU key.
Step 2: Press the
(up arrow key) or
on the keypad until the word until the word GRAPH appears.
Step 3: Press ENTER . The gauge display will indicate the
set full scale pressure range setting on the top line. The
middle line indicates the bar graph at 100% of full-scale.
The bottom line of the display will indicate SETFS to set
the full-scale range as displayed by the bar graph and 4-
20mA.
Step 4: Press the
(up arrow key) or
on the keypad to increase or decrease gauge value at
100% of range.
*Indicates default.
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(down arrow
(down arrow key)
(down arrow key)
MENU FUNCTIONS
Step 5: Press the ENTER key to finalize your choice. The
gauge display will now display SET. After two seconds the
screen will display the pressure value for 0% on the top
line. The middle line indicates the bar graph at 100% of
fullscale. The bottom line will display SET 0.
Step 6: Press the
(up arrow key) or
key) on the keypad to increase or decrease gauge value at
0% of range.
Step 7: Press the ENTER key to finalize your choice. The
new values for the bar graph and 4/20mA settings have
now been saved.
OFF: This option sets the amount of time before the gauge will
turn itself off. Offerings are Never*, 30MIN,10MIN, 5MIN, 2
MIN.
To use the OFF option:
Step 1: Press the MENU key.
Step 2: Press the
(up arrow key) or
key) until the word OFF appears.
Step 3: Press ENTER.
Step 4: Press the
(up arrow key) or
key) to select the desired OFF time.
Step 5: Press the Enter key to finalize the OFF setting.
UPDATE: This option allows for changing the rate at which
pressure is updated on the display screen. This feature is
useful with rapid changes in process pressure that may
cause flutter of the display. Options are 100ms*, 1 sec,
500ms and 200ms, updates per second or 100ms*.
Since customer processes vary, update rates should be
selected based on the application.
To use the UPDATE option:
Step 1: Press the MENU key.
*Indicates default.
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(down arrow
(down arrow
(down arrow