Salter Brecknell 650 - Manual (Page 33)

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CHAPTER 6: CALIBRATION
6.1 CALIBRATION OVERVIEW
Your 650 scale ships from the factory fully calibrated as a stand alone unit. If you are using
the 650 without a remote scale or the remote scale has been installed for you, then
calibration is not necessary. In general, there is no need to calibrate the scale unless you
feel that it has become inaccurate. It is a good idea to check the calibration of your scale
from time to time with a precision test weight. Salter Brecknell recommends that you
perform a new calibration on your digital scale at least once a year.
Note: If you wish to install the remote scale yourself - or you are a scale installer - then you
must configure and calibrate the remote scale before it can be used. The remote
scale’s installation and wiring instructions are found in Appendix D. The Service
Menu (Chapter 5) configures the scale to your remote weigh platform. Salter
Brecknell recommends letting a professional install the remote scale unless you
have previous experience in this field.
During calibration, up to four values are saved in the scale’s memory – the zero
value (deadweight) and up to three span values (test weights). If you are calibrating
the local scale, see Table 6-1 for a listing of minimum and recommend test weights.
In the unlikely event that either value is lost while in use, the Service menu makes
provisions for re-entering these values. See Chapter 5 for more information.
6.2 CALIBRATION MENU
6.2.1 CALIB – THREE POINT CALIBRATION
1. Press the soft key CALIB
2. Scale prompts “Select local or remote for calibration”.
3. Press the local or remote soft key or exit soft key to exit calibration
4. The scale prompts “Remove all weights and press enter”.
5. Remove all weight from the scale platform and press the ENT key.
6. The scale prompts “please weight” and briefly displays the zero count value and then
displays “Zero Calibration Done”
7. After computing the zero point the scale prompts “Input test weight in pounds (CAL
Point 1)
8. Enter the test weight value. For CAL point one use a test weight of at least 10% of the
scale capacity and press ENT.
9. The scale prompts “Put test weight on the press enter”
10. Place the test weight on scale and press ENT.
11. The scale briefly displays the count value for CAL point one.
12. Follow the prompts for CAL point 2 and 3. Use approximately 50% of the scale capacity
for CAL 2 and close to 100% of scale capacity for CAL 3.
13. If the calibration was completed successfully, the scale briefly display “Calibration
Passed”
6.2.2 CALIB – SINGLE POINT CALIBRATION
1. Follow steps 1 – 11 in 5.4.1.
6. When the scale prompts “Input test weight in pounds (CAL Point 2) enter 0 the press
ENT
7. The scale prompts “Abort Point 2 CAL?”
8. Press the YES soft key.
9. The scale prompts “Multi point cal aborted” and returns to the service sub-menu.