校验所需仪器、仪表、设备如下: 稳压电源 24VDC,±10％; 标准电阻 500Ω±0.01％; 五位数字电压表; 压力测试仪:浮球式标准压力计0.02％。 2.电源电压图2为1151电容式变送器负载特性图。其供电电压为12VDC～45VDC。由图可知;当 Calibration required instruments, meters, equipment are as follows: Power supply 24VDC, ± 10%; standard resistance 500Ω ± 0.01%; five digital voltmeter; pressure tester: float standard pressure gauge 0.02%. 2. Supply Voltage Figure 2 shows the load characteristics of 1151 capacitive transmitter. The supply voltage is 12VDC ~ 45VDC. As can be seen from the figure;