Step-by-Step instructions for restoring the factory default calibration on an S5 and J457 refractometer
When experiencing the following symptoms, follow the steps to restore the instrument calibration to factory defaults.
Symptoms:
There are 5 major symptoms that will indicate a factory restore is needed:
- The Sample Quality Indicator will not reach the “Good” level or above 80%
- The Sample Quality Indicator is frozen whether a sample is loaded on the prism or not. The sample quality Indicator could be frozen anywhere from 0% to 100%
- The Sample Quality Indicator is fluctuating erratically and will never stabilize.
- The Live Reading or displayed measurements will not stabilize with or without a sample applied to the prism.
- The Live Reading or displayed measurement will be frozen at a random value or always display the value for water.
Quick overview: There are 4 steps outlined in more detail below for restoring the Refractometers factory calibrations.
- Determine the software (Build) version: Software (Build) version level is located in MENU 123 / SYSTEM INFORMATION / SYSTEM STATUS
- Restore the Factory Two Point Calibration
- Restore the Measurement Status Monitor
- Perform a new Air Calibration
Calibration restore for Series 5 J157-J257-J357 & J457 Refractometers
Purpose: To restore the Refractometers calibrations back to factory defaults.
Important Notes:
Depending on the model of refractometer and software revision level, there are different locations for restoring the factory calibrations. This document will show how to restore the calibrations for all software revision levels and models except the J47 and J57 models. See the chart below to determine which steps you need to follow depending on the model and software revision level:
All J157 – J257 – J357 models:
- Software revision level 5.1.6.0 and higher starts on page 2.
- Software version level before 5.1.6.0 starts on page 7.
- Software revision level 4.1.6.0 and higher starts on page 2.
- Software revision levels from 2.6.2.0 to 4.1.5.0 starts on page 7.
- Software revision levels before 2.6.2.0, please contact RRA.
J457 after SW version 4.1.6.0:
J157 – J257 – J357 after SW version 5.1.6.0:
Detailed Instructions:
J457 after SW version 4.1.6.0:
J157 – J257 – J357 after SW version 5.1.6.0:
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| 2. Select CALIBRATION |  |
| 3. Select FACTORY RESTORE |  |
| 4. Select RESTORE FACTORY TWO POINT CALIBRATION |  |
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5. Press ZERO, the values should change to M=1 and B=0, see below. To save:
a. Option 1: After ZERO is performed, press CANCEL to exit this screen. b. Option 2: After ZERO is performed, press SAVE to exit this screen. |
Option 1
Option 2 |
| 6. Select RESTORE FACTORY MEASUREMENT STATUS MONITOR |  |
| 7. You will be asked if you really want to restore. Select YES. |  |
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8. Last we will perform a new AIR Calibration. Select ZERO |
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| 9. Select AIR |  |
| 10. Make sure the Refractometer Prism is very clean, dry and covered. Press CONTINUE |  |
| 11. After Pressing continue, the calibration for air will take approximately 25 seconds. |  |
| 12. Press OK when completed. The factory calibrations will now be completely restored. |  |
Detailed instructions:
J457 with SW from 2.6.2.0 to 4.1.5.0:
J157 – J257 – J357 with SW earlier than 5.1.6.0
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2. Select SERVICE SETTINGS, the default password is 519 |
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| 3. Select BACKUP AND RESTORE. |  |
| 4. Select CALIBRATION |  |
| 5. Select RESTORE M & B |  |
| 6. Press ZERO, the values should change to M=1 and B=0, see below. After M=1 and B=0, press CANCEL to exit this screen. |  |
| 7. Select RESTORE MQC |  |
| 8. You will be asked if you really want to restore. Select YES. |  |
| 9. Last we will perform a new AIR Calibration. Select ZERO |  |
| 10. Select AIR |  |
| 11. Make sure the Refractometer Prism is very clean, dry and covered. Press CONTINUE |  |
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12. After Pressing continue, the calibration for air will take approximately 25 seconds. |
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| 13. Press OK when completed. The factory calibrations will now be completely restored. |  |