Shortridge Instruments AIRDATA ADM-880C, Руководство по эксплуатации

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ADM-880C 07/20/09 21
increase as the key is held down. Individual readings are displayed in reading sequence within each memory group. The
memory groups are displayed in the order in which they were originally saved, not in alphabetical order.
The statistics and the associated data for any reading stored in memory can be viewed while the reading is on display as
described in Sections 5.8.1 VIEW GROUP STATISTICS and 5.8.2 VIEW ASSOCIATED DATA. Readings may be erased
or replaced in the current or a prior memory group as described in Sections 5.7.3.2 REPLACE READING IN MEMORY or
5.7.3.3 ERASE READING IN MEMORY and the revised statistics and associated data may be viewed.
5.4.2 “GO TO” A READING
The large memory can be more quickly traversed using the GO TO function. The GO TO function is accessed by pressing
ALT /
=
SCAN. The meter briefly displays [GO TO], and then displays [RDG/GROUPs]. Press the READ/SELECT key.
The meter will display the first reading in the most recently used memory group as the default for modification by the user.
The cursor will appear under the first number to the left. Enter the reading number required, one character at a time, using
the numerical entry method described in Section 5.1.3 NUMERICAL ENTRY. Press the SCAN
< key to move the cursor
beneath the memory group letter, then press either SCAN key to scroll through the memory groups. When the entry is
complete, press the READ/SELECT key. The meter will display the specified reading number, memory group letter, and
the reading.
If a number is entered that does not exist in the specified memory group, the meter will display the first reading in that group,
so that readings may be scrolled from the beginning.
5.5 SCAN < KEY
5.5.1 SCROLL THROUGH MEMORY - ASCENDING
Pressing the SCAN < key scrolls through all the readings in memory in ascending order. The scan begins with the first
reading in the first memory group used, and scrolls through all readings in memory. The speed of a scan will increase as
the key is held down. Individual readings are displayed in reading sequence within each memory group. The memory
groups are displayed in the order in which they were originally saved, not in alphabetical order.
The statistics and the associated data for any reading stored in memory can be viewed while the reading is on display as
described in Sections 5.8.1 VIEW GROUP STATISTICS and Section 5.8.2 VIEW ASSOCIATED DATA. Readings may
be erased or replaced in the current or a prior memory group as described in Sections 5.7.3.2 REPLACE READING IN
MEMORY or 5.7.3.3 ERASE READING IN MEMORY and the revised statistics and associated data may be viewed.
5.5.2 RESET DISPLAY
The ALT / SCAN
<
key sequence may also be used to reset the display and cause a long reading to scroll across the display
again. This function is useful when the message contains more than ten characters and the leftmost visible character is
underlined, indicating that characters further to the left are not being displayed. ALT / SCAN allows the user to view the
reading again, and note the leftmost characters before they move off the display. For example, a differential pressure
reading of [1348G-.6543] is one character too long for the 10 digit display. It would first be displayed as [1348G-.654]. It
would then scroll to the left and be displayed as [348G-.6543]. Press the SCAN
< key, and the reading will be scrolled
across the display again. Repeated scrolls of the same number only require that the SCAN < key (not ALT / SCAN < ) be
pressed.
5.6 READ/SELECT KEY
There are four reading modes: MANUAL, AUTO (automatic), TREND, and TIMED. Manual and automatic readings may
be stored in memory. Timed readings are always stored in memory. The meter cannot be turned off while the meter is
making AUTO, TREND, or TIMED readings. The reading process must first be halted. Halting these continuous reading
modes always returns the meter to the MANUAL reading mode. Therefore, the meter is always in MANUAL mode when
it is turned off, and always initializes in the MANUAL reading mode when it is turned on.
If the FlowHood mode is selected, but the flaps jack has not been installed when the READ key is pressed, the meter will
display [NO FLAPS], and will not take a reading. If the temperature mode is selected, but the TemProbe has not been
installed when the READ key is pressed, the meter will display [NO PROBE] and will not take a reading. If the FlowHood
flaps jack has been installed, the meter will read in the FlowHood, temperature and absolute pressure measurement
modes.
5.6.1 MANUAL READINGS
When READ is pressed, the meter takes one reading in the current measurement mode, and displays the result. The meter
will briefly display the measurement mode, followed by the measurement result. Pressing the READ key again will trigger
another measurement, which will clear all previous data from the display and display the new result. If the reading was
taken in a velocity or flow mode, the meter may briefly display the temperature probe status and the density selection before
displaying the measurement result.