The internal analytical value of the scale the external value is convert by the internal analytical value. E.g. if the range of internal value is 0~400,000, the eternal value is 1/6,000, its internal resolution is 400,000/6000=66.

The weight displays after weight calibration.
The range of external value the minimum value ~ maximum value.

Manual calibrate：Make the scale weight correctly through the adjustment from hardware.
Digits calibration：Make the scale weight correctly through the adjustment from software.

The linearity of load cell is lower than the resolution of the measurement so that we do multipule calibration to get close to the condition of non-linearity of load cell.

Usually, the material will change when the temperature change. At this moment the weight will also change. It can decrease the tolerance through temperature calibration.

The maximum capacity adds n-tupling division to ensure the range of maximum capacity can be measured. Usually it is the maximum capacity + 9E, but it is the maximum capacity + 9E in Hong Kong and Brazil.

kg, g, T, lb, lb. oz, oz, twg, tl.T, MM(JPN), tl.J(HONG KONG JEWELY TAEL) tl.H(HONG KONG TAEL), ct, dr GN, ozt, dwt, t(INDIA)

     Internal value is too low
     Internal value is too high

[Solutions]
1. Please calibrate the internal value.
First open the scale housing. On AD board , there are 2 VR: VR3 and VR 4. VR3 is used to calibrate weight and VR4 is used to calibrate internal value.
For example: MTW300kg
If E1 –08575 appears and it does not count down to zero after power on the scale, please adjust VR4 to -12450
2. after adjust VR4, the display still shows -08455, and the internal value can not arrived -12450. Please shorten the resistance value of R29. If the internal value is -19995, please amplify the resistance value of R29.

[Notes]
Whether to change the factor resistance or resistance value of R29, please calibrate the weight and internal value again.
How to see the internal value?
Please press zero key and then press conformation key after power on the scale.

1. Please press conformation key to enter into calibration mode, and do the calibration again.
2. When enter into the calibration mode, the display shows     which means the multiplying power is not enough (This phenomenon appears when exchange the Load Cell or change the specifications)
For example
When exchanging the Load Cell or changing the specifications, the display shows     and the weight can not be calibrated. Please modify the multiplying power. E.g. put the full scale weight on the platter and displays 24000COUNT which means the multiplying power is too small.
Please modify the resistance value of R11, R14, and R15 on AD board to change the count.
24000COUNT 21000-27000
30000COUNT 24000-30000
If COUNT is in above rang, the display does not show    .
36000COUNT is adjusted by weight. (Please adjust VR3)

Steps:
1.please adjusts the avometer to DCV200 m. Open the housing of the scale, cut off the PIN4 and PIN5 of CN2 on AD board.
2. Please connect PIN4 and PIN5 to avometer. Test the data when nothing on the scale and record④. Put weight (10 kg) on the scale and record the data①Œ. Put the second weight (20kgin total) on the scale and record the data②. Put the third weight (30kgin total) on the scale and record the data③Ž.
Record the tolerance:③Ž-②，②-Œ①，①Œ-④
Check whether the three tolerance < range of nonlinearity tolerance of L/C.
Generally, the tolerance ≦ 0.0004mv/v
For example: To test PW6KR~L/C
0/3~output 0.254mv/5=0.0508mv
1/3~output 3.508mv/5=0.7016mv
2/3~output 6.7625mv/5=1.3525mv
3/3~output 10.0155mv/5=2.0031mv
1 ~ 2.0031mv-1.3525mv=0.6506mv
2 ~1.3525mv-0.7016mv=0.6509mv
3 ~0.7016mv-0.0508mv=0.6508mv
4 ~0.6509mv(max)-0.6506mv(min)=0.0003mv
5 ~0.0003mv < 0.0004mv ok
Note: The voltage is divided by 5 because the standard specification of L/C is mv/v.

For example:
Scale: dual range, capacity:120kg Power on the scale and put20kgon the platter, the display shows20.12kg. It is useless to adjust VR3 of SPAN. Please shorten the resistance value of R11, R14 or R15 and then adjust the VR. (if the weight is not enough, please enlarge the resistance value)

Whether to change the factor resistance or resistance value of R29, please calibrate the weight and internal value again.

1. Scale must be used under a stable temperature and stable air flow.
2. If there is a windbreak, please use it.