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SERVICE
4. SERVICE
This section describes the scale calibration and maintenance of the ROS 1. Troubleshooting
solutions and customer service information are also provided.
4.1 CALIBRATION
Frequent scale calibration is not necessary for ROS 1 moisture content measurements.
METER recommends, at a minimum, calibrating the ROS 1 after a thorough cleaning.
Operators can calibrate the scale with the included 2.0000-g NIST traceable standard.
WARNING: The 2.0000-g standard weight must be handled only with clean lab utensils such as tweezers.
Mishandling the standard weight nullifies the calibration.
To begin the scale calibration, use the following steps.
1. Ensure the ROS 1 sample chamber is empty and the lid is completely closed.
2. Connect to the ROS 1 using the Bridge app.
3. Open the Bridge app Settings menu.
4. Click on the
Calibrate Scale button.
5. Select
Next
to begin tarring the scale.
NOTE: Do not touch the table or ROS 1 during calibration to prevent disturbing the calibration routine.
6. When prompted in Bridge, open the sample chamber lid.
7. Add an empty sample cup to sample position 1 on the carousel.
8. Shut the lid.
9. Select
Next
from Bridge.
10. When prompted, open the sample chamber lid.
11. Add the 2.0000-g standard to the empty sample cup.
12. Shut the lid.
13. Select
Next
from the Bridge.
The weight offset value will display on the Bridge app window.
14. Select
Next
again to accept and store the weight offset or
Cancel
to abort.
4.2 MAINTENANCE AND CLEANING
ROS 1 may be returned to METER for maintenance in the following areas: system inspection,
parts replacement, and instrument cleaning. Replacement parts can also be ordered from
METER. Contact
for more information.
Keeping the ROS 1 sample chamber clean is an important part of regular instrument care
and maintenance. Dust, debris, and spills can interfere with the sample cup rotation, disrupt
conductance between the heating surface and the samples, and alter weight measurements.
