10
MSI-7300 Dyna-Link 2 Technical Manual
4.2.3
Total
Note
1. Ensure the total mode has been programmed in the setup menu. If this has not been setup the
F-Key
assigned to
TOTAL
will not work.
2. Program an
F-key
to
Total
. See Section 4.2 on page 9.
3. Press
Total
F-key
to perform the total function that was set in Section 4.5 on page 13.
This feature should not be confused with the ttl.rd (Total Remote Devices) function, which will add weight
from two or more load sensors.
4.2.4
Net / Gross
Press the
NET/GROSS F-key
to switch between gross and net mode. The
NET/GROSS F-key
only functions if a tare
value has been established. The operator can switch back to gross from net without clearing the tare value. Only
clearing the tare, or setting a new tare, will change the tare value held in memory.
4.2.5
Tare
Press the
Tare F-key
to tare out a known force, only positive and negative deviations from the tared force display.
In force measurement applications, tare is useful as a way to display differential force. It also increases accuracy as
any initial error is removed leaving only slope error.
In scale applications, tare is typically used to zero out a known weight such as rigging, a packing container or
pallet. Once zeroed, the load displays in
NET
tension/weight. To use tare, set an
F-key
to the
TARE
function.
• A tare value is entered by pressing the
TARE F-key
.
• The
TARE
function in the
Dyna-Link 2
is defined as a tare-in/tare-out operation.
• The first press of the
TARE F-key
stores the current tension/weight as a tare value. The
Dyna-Link 2
subtracts the tare value from the gross tension and changes the display to
NET
mode.
• The next press of the
TARE F-key
will clear the tare value and revert the display to
GROSS
mode.
• The optional RF remote display has a
TARE
key permanently available.
4.2.6
Peak Hold
The Peak Hold function uses a high speed mode of the A/D converter allowing it to capture transient tensions at a
far higher rate than typical dynamometers.
Note
• Peak hold is cleared and enabled with the
PeakHold F-key
.
• When a new peak is detected, the
F-key
LED will flash three times.
• The accuracy of the system in peak hold mode is slightly reduced to 0.2% of capacity ± 5d.
• The filter setting is turned off while in peak hold mode to ensure the fastest acquisition rate.
Example:
The Peak Hold function is useful in materials and fall tests. Common tests include Overall Breaking Strain
(OB€), Breaking Force, and Cycled Breaking Strain.
Capture Peak Force
1. Program an
F-key
to
PeakHold
. See Section 4.2 on page 9.
2. Prepare the test stand and test a sample.
3. Press
to zero out any residual strain on the link.
4. Press the
PeakHold F-key
. The
Pk
annunciator displays.
A small jump in the reading may occur depending on the stability of the test stand.
5. Apply the test force. The
PeakHold F-key
LED will blink tree times for each peak it detects.
6. Remove the test force and record the peak value.
7. Press the
PeakHold F-key
to clear the peak value.
8. To run a new test, confirm
Pk
is not displayed. Repeat steps 1 through 6.
