T-APM - Apex Premier F
UME
H
OOD
M
ONITOR
T-APM 0133MAN00015 - Rev J ECN - JUL 2017
Page 21 of 61
Configuration of the APM
To access the Configuration Menu, perform the steps outlined in the
ENABLING THE TOUCH SCREEN AND
PASSWORD PROTECTION
section of this manual, and then simply select the
CONFIG MENU
button on the
main screen
[SCREEN 1]
.
Display Modes
The APM has three distinct modes in which to display information to the operator. The three modes are;
Alpha, Graphic and Numeric
[SCREEN 1A]
each of which are described below.
Alpha Display Mode
Alpha Display Mode is intended for applications where the fume hood operator does not require actual
face velocity values to be displayed locally. When operating in Alpha Mode the APM displays text
messages such as; NORMAL, WARNING HIGH FACE VELOCITY DETECTED, WARNING LOW FACE
VELOCITY DETECTED, etc (see Appendix G), to define the fume hood status in lieu of face velocity
measurements. The alarms are all based on actual flow measurements, but only text is displayed to the
operator. Note: when in this mode, pressing the
SCROLL
button once will allow anyone to view the actual
air flow velocity reading.
Selection 1
: To select Alpha mode, simply choose
DISPLAY
from the
CONFIGURATION MENU
[SCREEN1A]
.
Selection 2
: Next press the
ALPHA
selection to enable alpha mode.
Graphic Display Mode
Graphic Display Mode allows the operator to view a graph of the fume hoods performance over a given
time interval. This feature is useful for trending the hood performance over an extended period of time.
Selection 1
: Graphic mode has the same configuration units as the numeric mode,
IMPERIAL
or
METRIC
units
[SCREEN 3A]
. The APM will ask if the displayed velocities are to be in
IMPERIAL
(Feet Per Minute or
FPM) or
METRIC
(Meters Per Second or MPS). Once
IMPERIAL
or
METRIC
is chosen, all units within the
APM are changed to that selection. For example, if
IMPERIAL
is chosen, all set points, alarm points,
caution bands, etc are in FPM.
Selection 2
: The next selection is the time duration for the displayed graph, the selections are as follows
[SCREEN 4A]
:
REAL TIME
- The APM will continuously display approximately 2 minutes worth of data points on
the display at a time.
ONE HOUR
– The APM will display 1 hour worth of data points on the display at a time. This is a
useful setting for monitoring the hood performance during lunch and break times.
ONE DAY
– The APM will display 24 hours worth of data points on the display at a time. This is a
useful setting for monitoring the hood performance over night.
ONE WEEK
– This is the slowest setting. The APM will display information on hood airflow in a one
week “snapshot”. This setting is only useful for fume hoods that are performing long experiments
in which the hood status does not change much. Note: this selection will only provide coarse
resolution due to the long scan time for the graph, but is useful in monitoring a hoods status over
a long time frame.
Selection 3
: Following the time duration, the next setting is for the high limit or highest displayed point on
the graph
[SCREEN 7A]
. Note: any flow numbers higher than this number will result in a flat line at the top
of the screen (clipped waveform). By making this selection close to the hoods maximum displayed
velocities, the best resolution is attained.
Selection 4:
The last selection is the low limit or lowest displayed point on the graph
[SCREEN 8A]
. Note:
any flow numbers lower than this number will result in a flat line at the bottom of the screen (clipped
waveform). By making this selection close to the hoods minimum displayed velocities, the best resolution
is attained.
Содержание Apex Premier
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