(1) Calibration points will depend on the ADT762 pressure range.
a. Single pressure range: Two calibration points are required. Example: the calibration default point for (0~2)MPa, is 0 MPa
and 2 MPa; the default points for (-100~0)kPa is -100 kPa and 0 kPa. The calibration point for -100 kPa may be
unattainable. In this case the low pressure calibration point would be as low as possible.
b. Dual pressure range: Three calibration points are required. Example: (-20~20)MPa, the default pressure is -20 kPa,
0 kPa and 20 kPa.
(2) The calibration points are as below:
a. 2-point calibration: 1 point is lower limit, 2 point is higher limit.
Example: (0～100)kPa: 1 point: 0kPa, 2 point: 100kPa; (-100～0)kPa: 1 point: -100kPa, 2 point: 0kPa.
b. 3 point calibration: 1 point is lower limit, 2 is 0, 3 point is higher limit.
Example: (-20～20)kPa: 1 point: -20kPa, 2 point: 0kPa, 3 point: 20kPa.
(3) During calibration, user can choose the prioritized points. However, it is suggested to use default setting.
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25
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standard pressure
calibration point flash
Figure 5-3-1: 1 point entrance
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Example: ADT672 w/ (0~2) MPa
(1) Press to enter into passport menu, input the password "2003"
and press to enter into calibration menu.
(2) Select and press to enter into the entrance
interface.The【01】of left reading area is 1 calibration point, the user
can select points by using .Please press to start
calibration. (as figure 5-3-1)
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