9
User's Guide
SET POINTS
This feature is useful for tolerance checking (GO/NO GO) or alarm indication in process
control applications. Two limits, high and low, are specified and stored in the non-
volatile memory of the instrument and all readings are compared to these limits. The
results of the comparisons are indicated
through the three open-collector outputs pro-
vided on the 9-pin connector, thus providing
"under", "in range" and "over" signaling.
These outputs can be connected to indica-
tors, buzzers or relays as required for the
application.
After the Set Point mode is enabled through
the configuration menu (see Section 3),
pressing the MODE key will sequence
through an additional step indicated by "SP" on the display. To enter or change the
values of the set points press ENTER. The high set point is displayed. Use and
keys to increase or decrease the value and MODE for changing between tension and
compression. When the desired value is displayed, press ENTER and repeat the above
steps for the low set point. After entering both values "donE" will appear on the display.
Press ENTER to store the changes or ESCAPE to quit. In either case "SP" will appear on
the display and the ENTER key may be used for re-entering the set point change mode
or the MODE key for proceeding with the normal operation of the gauge.
AVERAGE MODE
This mode is used for obtaining an average force reading over a specified period of
time. Applications include measurement of peel force, muscle strength, frictional force
and any other tests requiring time-averaged readings. There are three user-program-
mable parameters associated with this
mode: trigger force, initial delay and
average time. The programming of
these parameters and the enabling of
the Average mode are done during the
gauge setup. Please refer to the "Con-
figuration" section for more informa-
tion.
Press MODE until "A" is displayed and
then CLEAR or ZERO to begin testing.
The process of averaging begins as
soon as the programmed trigger force
is reached and is indicated by a flashing "A". The conclusion of the test is indicated by
an alternating "A" and the calculated value. The readings obtained during the initial
delay will not be part of the average, but the peak value is stored for later recall. A new
test may be started by pressing CLEAR or ZERO.
DELAY
AVERAGE TIME
TIME
FORCE
PEAK
AVE
TRIGGER
FORCE
USER - SUPPLIED
40 ma MAX
AS ABOVE
SAME
2N3904
GAUGE
9
8
5
GND
4
OUT
_
+
24V MAX
LOAD
Section 6
Section 7
AVG
