A&D AD-4405 manual Digital Linearization Function, Setting the Division and Range

5.3.1.Setting the Division and Range

Consider the following rules to design the weighing range.

Rule 1 Select the division and range of each weighing range so as to fit the following inequality. The first range < the second range

The division of the next weighing range is automatically set larger than the division of the lower weighing range. And the division can change.

Rule 2 When setting the dual range, the upper limit value of the second range becomes the maximum capacity.

Rule 3 Select a resolution smaller than 40000. The resolution is a value that divides the maximum capacity by the minimum division of the first range.

5.4. Digital Linearization Function

Even if the zero and span calibration have been completed, there may still remain a

linearity deviation caused by the performance of the weighing unit. The digital

linearization function can rectify or reduce the linearity deviation using weighing points

during the zero and capacity setting. Up to three weighing points can be specified.

Caution

This function does not improve repeatability or hysteresis.

Use the mass on the condition that lnr 1 < lnr 2 < lnr 3.

Do not press the

ENTER

key while the STABLE mark is off.

Step 1

Check the

Cal 0

display. Press the

MODE

key to display

lnr 0

.

Step 2 Enter the zero point. Refer to “5.2.3. Zero Calibration”.

Step 3

The value of the middle point is displayed after indicating

lnr x. x is 1, 2 or 3.

The triangle mark of the same number(x) is displayed along with the value.

Step 4

Select a middle point.

If you want to cancel the current procedure, press the

ESC

key to finish this

function. Proceed to step 7 and other points are cleared (canceled).

Select a middle point value using the 0 - 9 keys. Proceed to step 5.

Step 5

Place a mass equivalent to the displayed value on the weighing unit. Press the

ENTER

key after the STABLE mark has turned on. Proceed to step 6.

Step 6

If you include a 2nd and 3rd middle point, repeat steps 3, 4, 5 for each.

If you finish this function, proceed to step 7.

Step 7

Perform step 11 of "5.2.4. Span Calibration" immediately.

5.4. Digital Linearization Function Page 18 AD-4405 Weighing Indicator