7418 East Helm Drive • Scosdale, Arizona 85260 • 480.948.5555 • www.interfaceforce.com
Page 28 of 45
CALIBRATION SET POINT SCREEN BUTTON FUNCTION
• Displays list of all previously saved set point les from which to select.
• Will clear all of the set point elds from the screen
• Accepts this le for the current calibraon
• Displays ed curve data table and computes polynomial coecients.
• Displays ed curve plot and computes polynomial coecients.
• Uses coecients to compute mV/V values for loads in the load column
• Allows the current le to be edited.
• Will return to the Device Under Test informaon screen.
• Standard Serial Number: Idencaon number of the standard being used.
• User idenable eld as dened in WGoldCfg program.
• Located on the label of the standard.
• Date that the standard was calibrated. Located at the top center of the calibraon
data sheet. (NIST Test Date or Interface Test)
• The traceability number for an individual standard. Located at the top center of the
calibraon data sheet. (NIST Test Number or NIST Traceable)
• The units that the calibraon will be performed in. (lbf, Klbf, N, kN, kgf)
• The sensivity factor of the rig servo system stated as the force magnitude corresponding to
a command signal input to the servo amplier of 10 V. Control Load must be expressed in the same force
units as the set point les to be used.
• Make sure that that you have connected to the correct standard and that the related control load matches
the one that you are using.
• Controls how fast the load is applied. (Larger number = slower load applicaon) Can be used
to prevent overshoong the rst calibraon point.
• Limits the amount of force that the load frame can apply. Reference the appropriate
hydraulic load frame specicaons. Used as a safety feature. For example, if a 12Klbf capacity load cell
were being calibrated with a rig having a 22K standard with Control Load = 26 Klbf, Max Voltage might
be set for 6 which provides enough command signal for capacity plus 20% over range for exercising plus
nominal oset while prevenng a load greater than 15.6 Klbf from being applied.
• Control voltage required to move the actuator from zero load to the point
of inial contact. The values as shipped are -0.13 for Tension and +0.12 for Compression. This is the same
for both load cell standards.
Max VDC =
(
FSL (FullScale Load) * Exercise Load/95
Control Load
)
* 10 + ABS (Oset Voltage)