Rice Lake MSI4300 PortaWeigh Plus Crane Scale 7 Key - Manual (Page 33)

Page 32 MSI-4300 Porta-Weigh Plus/7 Key • User Guide
M E A S U R E M E N T S Y S T E M S I N T E R N A T I O N A L
2) Use the SELECT key to scroll through the Units options.
When the desired units are displayed, push ENTER.
Standard calibration:
Standard Calibration is to be used for normal test weight or cal fixture
calibration of the Porta-Weigh Plus.
1) Use the SELECT key to scroll to the “STD CAL” message.
Push ENTER.
2) The message reads “Ø SCALE”. Remove all weight from the
scale. When motion ceases push ZERO . Assuming the
detected zero weight is within acceptable limits the message
reads “WEIGHT” indicating it is time to add the test
weight(s).
3) Pick up a test weight of at least 20% of capacity. (Note: A
test weight of 50% or more of capacity is recommended for
highest accuracy.) A legal-for-trade unit must be calibrated at
80% of capacity or greater.
4) Use the SELECT key to cause the displayed reading to match
the value of the test weight.
Note: If the Select key is not pressed, the calibration weight
will default to the scale full capacity. When a match is made
push ENTER. Repeat for the remaining digits. When the last
digit is entered the scale should be steady, as this can affect
calibration accuracy. (Infrared Remote users can input the
number directly and must enter leading zero's.)
For example: 5000 lbs of dead weights are available to
calibrate a 2500 kg scale. Since 5000lbs = 2268 kgs (5000 x
0.4536), the number entered with the select and enter keys
would be 2268.
5) Calibration is complete, push CLEAR to return to normal
scale operation, or push SELECT to choose another Calibrate
Setup function.
Fine calibration
Fine calibration is for minor adjustments to the calibration and is
usually not necessary. It is especially useful in hydraulic cal fixtures
for fine adjustments.
1) Use the SELECT key to scroll to the “FINE CAL” message.
Push ENTER.
2) Pick up a test weight of (or set the hydraulic tension to) at
least 50% of capacity. The weight is indicated on the numeric
digits.