电动执行器的工作原理：执行器由伺服电机、机械减速和位置发送器三部分组成。执行器接受伺服放大器或电动操作器的输出信号，控制伺服电机的正反转，经机械减速器后变成输出力矩去推动调节机构动作。与此同时，位置发送器将调节机构的角位移转换成相对应的4-20mADC信号，作为阀位指示，并反馈到前置磁放大器的输入端作为位置反馈信号以平衡输入信号。
Banner Engineering Multi Beam Scanner Block LM4-2 #3849
Rees Double Plunger Pushbutton 00579-132 #33841
General Electric Contactor CR353AD3D*1 #33486
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SOLA Regulated Power Supply SLS-24-048 #5985
Square D Circuit Breaker 20 Amp 1 Pole #27026
Square D Starter 9065-TR1 #35916
Parker Power Valve Body PVD-B1424 #38829
General Electric Circuit Breaker TEF134050 #38771
Battenfield Heater Band 180 Watt #22201
Heater Band 314511-B, 375 Watt #22418
Applied Heater Band A-512C221-X, 1300 Watt #22427
Fafnir Ball Bearings 9112P #12630
General Electric Overload Relay RT1N, #16991
Delta Heater Band 30582 C3, 600 Watt, #26834
Watlow Thinband Heater Band STB4E1J13-T 550 Watt #26833
Limitron Dual Element Fuse JKS-400, 400 Amp, #17833
Filtrec Filter A150G03 #32303
Lot of 6 Limitron/Bussma?nn Fuse JKS3 #18031
Telemecanique Indicating Beacon DL1 BDB3 LED Cluste
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