2
CALIBRATION:
The Mud Balance calibration can be checked using fresh water. At 70F (21C) fresh water should give
a reading of 1.00 on the specific gravity scale, 8.34 on the lbs/gal scale, and 62.3 on the lbs/cu ft scale.
This spot on the balance arm is marked with a longer scale division line called the water line. Small
amounts of mud on the balance arm or rider can cause improper readings. If the Mud Balance does
not give the correct reading for fresh water, the instrument should be thoroughly cleaned.
NOTE: Replacing the lid on the balance cup with a new lid can cause the Mud
Balance to be out of calibration. Check the calibration whenever a different
lid is used and, if necessary, recalibrate using the new lid.
If the Mud Balance continues to give improper readings for fresh water after cleaning, It should be
recalibrated. This is done by removing the screw cover from the weight adjustment compartment and
adding or removing lead shot until the Mud Balance is correctly calibrated.
PARTS LIST:
2
Not required if the 206751 carrying case is used.
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