Rice Lake Signal Conditioning Transmitter/Indicators - Manual (Page 19)

Configuration 15
2.1.5 Weight (Span) Calibration (With Test Weights)
After performing the Theoretical calibration (Section 2.1.1 on page 13) and the Zero setting (Section 2.1.3 on page
14), this function allows calibration to be done using test weights of known value. If adjustment is required, change
the displayed value to display the test weight value.
1. Load the test weight onto the scale, use as high a percentage of the maximum quantity to be weighed as
possible.
2. Press and hold , then press to enter set-up menu, CALIb will be displayed.
3. Press , FS-tEO is displayed.
4. Press or until UEIGHt is displayed, press .
5. The value of the weight currently on the system will be flashing on the display. All of the LEDs are off. (If
adjustment is not required, skip to step 8.)
6. Adjust the value on display to match weight loaded on the scale if necessary, by pressing or . The
LEDs will begin scrolling.
7. Press , the new set weight will appear with all the LEDs flashing.
8. Press , UEIGHt will be displayed again.
9. Press twice to exit set-up menu.
Example:
For a system of maximum capacity of 1000 kg and 1 kg division, two test weights are available, one 500 kg and one 300 kg.
Load both weights onto the system and correct the indicated weight to 800. Now remove the 300 kg weight, the system
must show 500; remove the 500 kg weight, too; the system must read zero. If this does not happen, it means that there is
a mechanical problem affecting the system linearity.
Identify and correct any mechanical problems before repeating the procedure.
If theoretical full scale and recalculated full scale in Weight (Span) Calibration are equal, it means that the
Theoretical Calibration is currently in use; otherwise, the Weight (Span) Calibration based on test weights is in
use.
If the correction made changes the previous full scale for more than 20%, all the parameters with settable
weight values are reset to default values.
Linearization Option On Max 5 Points:
It is possible to perform a linearization of the weight repeating the above described procedure up to a maximum of
five points, using five different test weights. The procedure ends by pressing
or after entering the fifth
value; at this point it will no longer be possible to change the calibration value, but only to perform a new Weight
(Span) Calibration. To perform a new calibration, return to the weight display and then re-enter the calibration
menu.
By pressing after having confirmed the test weight that has been set, the full scale appears, recalculated
according to the value of the maximum test weight entered and making reference to the cell sensitivity set in the
theoretical calibration (SEnSI b).
Important
Note