气动阀是调节系统中的一种驱动机构，阀门的作用由调节器控制，阀门的作用也线性地影响着工艺参数的变化，其余部分只能在停机状态下校准。为了提高调节性能，调节阀常配有阀门定位器。通常，启东阀门与阀门定位器一起校准。
1.气动阀定位器调节阀校准
（1）接线
打开气源调节调整器，使其输出（数字压力表1）被重新校准，并观察阀门行程是否处于起始位置（最大行程位置）。将常量值设备调整到100kPa，以查看阀门行程是否为最大（起始位置）。
（2）步骤
A.选择输入信号压力20KPa、40kpa、60kpa、80kPa、100KPA 5点进行校准。
B.相应的阀位指示应为0.25%、50%、75%、100%。
C.在正负两个方向进行校准。阀门位置指示，如全行程(Mm)，乘以比例百分比，这样就可以得到行程的mm数。
2、带电气阀门定位器的调节阀调准
（1）接线
首先发送4mA输入信号，观察数字压力表是否为20 kPa，以及阀行程是否处于起始位置（最大行程位置）。然后将输入信号调整到20mA，以查看数字压力表是否为100kPa，阀门行程达到最大值（起始位置）。
（2）步骤
A.选择输入信号压力4mA、8Ma、12mA、16mA、20mA 5点进行校准。
B.相应的阀位指示应为0.25%、50%、75%、100%。
C.在正负两个方向进行校准。阀门位置指示，如全行程(Mm)，乘以比例百分比，这样就可以得到行程的mm数。
在调节阀校验过程中，由于是现场校验，阀门已安装在使用位置，不能进行气密性试验等项目。定位器与气动阀联动校准过程中，发现定位器不能正常工作时，应单独取下定位器并进行校准。
1、 On site calibration of pneumatic valve (with valve positioner)
Pneumatic valve is a driving mechanism in the regulating system, and its function is controlled by the regulator. The valve's function also linearly affects the changes in process parameters, and the rest can only be calibrated in the shutdown state. In order to improve regulation performance, regulating valves are often equipped with valve positioners. Usually, Qidong valves are calibrated together with valve positioners.
1. Calibration of pneumatic valve positioner regulating valve
(1) Wiring
Open the air source regulator to recalibrate its output (digital pressure gauge 1) and observe whether the valve stroke is at the starting position (maximum stroke position). Adjust the constant value device to 100kPa to check if the valve stroke is at its maximum (starting position).
(2) Steps
A. Select 5 input signal pressures of 20KPa, 40kpa, 60kpa, 80kPa, and 100KPA for calibration.
B. The corresponding valve position indication should be 0.25%, 50%, 75%, and 100%.
C. Calibrate in both positive and negative directions. The valve position indication, such as full stroke (Mm), is multiplied by the proportional percentage to obtain the number of millimeters of stroke.
2. Adjustment of regulating valves with electrical valve positioners
(1) Wiring
Firstly, send a 4mA input signal and observe whether the digital pressure gauge is at 20 kPa and whether the valve stroke is at the starting position (maximum stroke position). Then adjust the input signal to 20mA to check if the digital pressure gauge is 100kPa and the valve stroke reaches the maximum value (starting position).
(2) Steps
A. Select 5 points for calibration with input signal pressures of 4mA, 8Ma, 12mA, 16mA, and 20mA.
B. The corresponding valve position indication should be 0.25%, 50%, 75%, and 100%.
C. Calibrate in both positive and negative directions. The valve position indication, such as full stroke (Mm), is multiplied by the proportional percentage to obtain the number of millimeters of stroke.
During the calibration process of the regulating valve, due to on-site calibration, the valve has been installed in its intended position and cannot undergo airtightness tests or other items. During the calibration process of the locator and pneumatic valve linkage, if it is found that the locator cannot work properly, the locator should be removed separately and calibrated.