5.2 Function selection and function activation
Measuring instrument ALMEMO
®
8390-2 provides a wide variety of functions
for controlling measuring sequences, for acquiring, averaging, monitoring, and
saving measured values, for outputting data to various peripheral equipment,
and for scaling, adjusting, and correcting sensors, etc.. Since these functions
will not be needed by the normal user all at once, they can be activated in va-
rious ways on an application-specific basis.
After reinitialization (see Section 3.4) the
FUNCTION
key will initially have only the
following functions assigned : maximum value, minimum value, cycle, measu-
ring range, locking mode, and averaging mode. Appropriate additional functi-
ons will then be activated depending on the sensor programming (i.e. locking
mode, averaging mode, etc., see below). Any further functions that you fre-
quently require can be enabled via the interface. This approach is intended to
maintain rapid access via the
FUNCTION
key and to minimize the risk of acciden-
tally entering incorrect information.
If it suddenly becomes necessary to have all functions activated for a limited
period, then the first time you press the
FUNCTION
key you must hold it down for
longer than one second. To verify that this has succeeded the
´F´
arrow in the
display flashes.
The active functions can be selected by repeat-pressing the
FUNCTION
key. To
revert to the previous function arrangement press and hold down the
FUNCTION
key again. If a function is selected instead of a measured value, the
´F´
arrow
in the display lights up.
Functions are shown in the display as a function value followed in the units po-
sition by a two-character abbreviation (as listed in the following table); in the ca-
se of sensor parameters, the channel number will also be shown.
Functions
Value Abbrev.
Activation
Memory
Maximum value (Hi)
1
:
127
.
3 MH
Default
Device
Minimum value (Lo)
1
:
023
.
4 ML
Default
Device
Average value
1
:
13
.
24 AV
Averaging mode >0
Device
Number of averaged values
1
:
1234
C
Averaging mode >0
Device
Averaging mode
1
:
Cont
AM
Default
Sensor
Smoothing
00
DG
Hold down
FUNCTION
key
first time it is pressed
Sensor
Diameter standardized
1
:
0150
.
DN
Measuring range
´Flow´
Cross-section area
1
:
0175
.
CS
Measuring range
´Flow´
Sensor
Atmospheric pressure
1013
mb
Hold down
FUNCTION
key
first time it is pressed
Device
Temperature compensation
1
:
023
.
4 TC
Hold down
FUNCTION
key
first time it is pressed
Device
Cycle
00
:
15
:
00 CY
Default
Device
Time-of-day
12
:
34
:
56
TM
Hold down
FUNCTION
key
first time it is pressed
Device
ALMEMO
®
8390-2
17
Display and keypad
