18
Model 8715 DP-C
ALC
™ Micromanometer and Model 8380 A
CCU
B
ALANCE
®
Air Balancing Tool
Keypad Function
Description
Enter (
) Key
Press to accept a menu selection, value or condition. Press to Start or Stop
data logging when in Continuous Key mode.
READ Key
If the Data Logging is set to
Manual/Single
, pressing the
READ
key begins a
reading, which stops automatically when the reading is done.
If the display mode is set to
Manual/RunAvg
, the micromanometer will
measure continuously, and pressing
READ
will alternately pause or resume
the measurement.
The red button on the capture hood base has the same function as the
READ
key.
Note:
Pressing the
READ
key will not store any measurement to memory.
SAVE
The
SAVE
key is used to save the currently displayed measurement to the
data logging memory.
ESC Key
The
ESC (Escape)
key is used to cancel, end an operation, or to exit a screen
of displayed information.
NEXT TEST
Advances the Test ID number. The
NEXT TEST
key is used to select a new
unused Test Id for saving Samples when logging data.
(Print)
The
key downloads data to an optional printer (8934) or to a computer.
STATS
The
STATS
(Statistics) key will display the average, minimum, maximum and
number of samples of data stored in the current Test ID.
MENU
Press the
Menu
key to access the Menu selections, which are Pressure Tool,
Display Setup, Flow Setup, Actual/Std Setup, Data Logging, Bluetooth
Functions, Applications, Cf Selection and Calibration.
Common Terms
In this manual there are several terms that are used in different places. The following is a brief
explanation of the meanings of terms.
Term
Description
Sample
Consists of all of the measurement parameters stored at the same time.
Test ID
A group of samples. The statistics (average, minimum, maximum, and count)
are calculated for each test ID. The maximum number of test IDs is 100.
Time Constant
The time constant is an averaging period. It is used to dampen the display. If
you are experiencing fluctuating flows, a longer time constant will slow down
those fluctuations. The display will update every second, but the displayed
reading will be the average over the last time constant period. For example, if
the time constant is 10 seconds, the display will update every second, but the
displayed reading will be the average from the last 10 seconds. This is also
referred to as a ―moving average‖.
Sample Time
Sample Time is the time period over which the Sample will be averaged. The
sample time can be adjusted when the data logging mode is set to Auto-
Save/RunAvg.
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