Page 34 Milltronics BW100 - INSTRUCTION MANUAL 7ML19985DJ01
mmmmm
Recalibration
Direct Zero 
Use direct zero entry (P367) when replacing software or hardware, if it is not convenient 
to perform an initial zero. A record of the last valid zero count is required.
Refer to 
Maneuvering
 on page 18 for parameter selection and value change. 
%
current zero count
enter previously recorded
zero count
new zero count accepted