Ohaus Valor 7000 Series COMPACT FOOD SCALES Manual - Manual (Page 11)

Valor™ 7000
Series EN-9
9. If required, place an empty container on the pan and press Tare.
10. Place sample material on the pan or in the container. If the sample weight is under the
target percentage range, the yellow LED will light. If the sample is within the target
percentage range, the green LED will light. If the sample is over the target percentage
range, the red LED will light.
Note: Press Function to view the low and high check limits.
Positive Check
Positive check is used to determine when the material added to the scale is within the target
range. In this case the UNDER and OVER limits must be positive values. (The OVER limit must
be greater than the UNDER limit.)
Add material to the scale until it is within the ACCEPT (green) range.
Negative Check
Negative check is used to determine when the material removed from the scale is within the
target range. In this case the UNDER and OVER limits are both negative values.
The UNDER limit must be greater than the OVER limit (for example: UNDER= -10/OVER= -15).
Place the item to be weighed on the scale and press Tare.
Remove a portion of the item until it is within the ACCEPT range.
Zero Check
Zero check is used when comparing subsequent samples to an initial reference sample. In this
case, the UNDER limit must be a negative value and the OVER limit must be a positive value.
Place the reference item on the scale and press Tare. Remove the reference sample and place
the item to be compared on the scale to determine if it is within the ACCEPT range.