Before a test can be started, most channels must have the sensor scaling defined. These channels are displayed in the sensor scaling grid for easy navigation and editing. To configure a channel for sensor scaling, supply a Sensor scaling mode.
Specify the Slope and Intercept of the scaling line.
Specify the Slope of the sensor scaling line. Enter both the Electrical span and the Physical span.
Specify the Electrical 1, Physical 1, Electrical 2 and Physical 2 points.
Initially, the readout displays the current reading of the channel(s), as per the parameters defined, but with the following experimental two point scaling defaults:
There are two buttons, labeled MEASURE 1 and MEASURE 2, that capture the two readings. These readings will be populated into the electrical 1 and 2 respectively.
The first measurement will need to be taken before the second one can be taken. Once they are both selected, exiting the dialog will automatically update the setup configuration with these two values. Not completing the entire process, or canceling out will not perform the measurements and will revert any and all experimental values to their original values.
Once the first measurement is taken, the second one can be taken. It is not possible to read the first measurement again with restarting the scaling from the beginning. Either cancel out of the scaling, or complete it and restart it again. There are no limits to how many times the scaling process can be started/completed.
Initially, the readout will display the current reading of the channel(s), as per the parameters defined, but with the following shunt scaling defaults:
There are three buttons, labeled ZERO, INSTALL and MEASURE. When the test is initially started, all shunts will be removed, the current readings displayed, and the zero button enabled. The install and measure will be grayed out at this time.
The user will select the zero button as the first step in completing the shunt scaling. It will proceed to collect readings for these unshunted values for all channels selected. These unshunted values will then be used to set the zero offset and re-start another test with these new parameters. Once the test has started, the readings should be close to zero.
At this time, the Install button will be enabled as well as the ZERO button. The user can repeat the balance or proceed to install shunts by clicking the install button. If the install button is pressed, the shunts will be installed as per the polarity defined on each channel. The zero and install buttons will be disabled and the measure button will be enabled.
It is recommended that the user wait until such time that the installed shunts readings stabilize before selecting to measure. The shunts will cause a spike that results in “ringing” of the readings due to the signal conditioner front end filtering and digital filtering. This can easily be seen in the digital readout display. At that time, the measure button can be clicked.
Now that shunts have been installed and readings stabilized, the measure button can be clicked to record the shunted values. These unshunted and shunted values measured will populate the electrical zero and electrical span respectively in the setup configuration. The prerun balance offset will be set to zero.
The shunt deviation can then be computed.
Specify the Strain gage factor and Bridge factor.
Internal control.
It is possible to copy the properties from one input channel and paste them into another channel of the same type. To do this, select the channel to be copied and click Copy. Select the parameter to be copied and click OK.
To paste the copied parameters into a different channel, select the target channel and click Paste.