SCONINC变换器SCONI-ACC-B86X,出售山一SKC-18MPCREVIS,ST-5642,2 channels Pulse Output, 0.5A/24Vdc, Source
CREVIS,ST-5641,1 channel Pulse Output, 0.5A/24Vdc, Source
CREVIS,ST-5444,4 channels PWM Output, 0.5A/24Vdc, Source
CREVIS,ST-5442,2 channels PWM Output, 0.5A/24Vdc, Source
CREVIS,ST-5422,2 channels PWM Output, 1.5A/24Vdc, Source
CREVIS,ST-5351,1 channel SSI Interface
CREVIS,ST-5272,Serial Module RS485 Communication 2 Channels, Premium type
CREVIS,ST-5252,Serial Module RS232 Communication 2 Channels, Premium type
CREVIS,ST-5232,Serial Interface RS485 2 Channels
CREVIS,ST-5231,Serial Interface RS485 1 Channel
CREVIS,ST-5221,Serial Interface RS422 1 Channel
CREVIS,ST-5212,Serial Interface RS232 2 Channels

CREVIS,ST-5211,Serial Interface RS232 1 Channel
CREVIS,ST-5114,4 channels High Speed Counter Input, 24Vdc
CREVIS,ST-5112,2 channels High Speed Counter Input, 24Vdc
CREVIS,ST-5111,High Speed Counter, 1 Channel, 5Vdc/24Vdc
CREVIS,ST-5101,High Speed Counter, 1 Channel, 5Vdc/24Vdc
CREVIS,ST-4522,ACREVIS,NAlog Output 2 Channels, -10~+10V, 12Bit
CREVIS,ST-4474,ACREVIS,NAlog Output 4 Channels, Sensor Connector Type, 0~10V, 12Bit
CREVIS,ST-4274,ACREVIS,NAlog Output 4 Channels, Sensor Connector Type, 4~20CREVIS,MA, 12Bit
CREVIS,ST-4491,ACREVIS,NAlog Output 1 Channel, 0~10V, 12Bit, CREVIS,MAnual Type
CREVIS,ST-4424,ACREVIS,NAlog Output 4 Channels, 0~10V, 12Bit
CREVIS,ST-4422,ACREVIS,NAlog Output 2 Channels, 0~10V, 12Bit
CREVIS,ST-4214,ACREVIS,NAlog Output 4 Channels, 4~20CREVIS,MA, 12Bit
CREVIS,ST-4212,ACREVIS,NAlog Output 2 Channels, 4~20CREVIS,MA, 12Bit
CREVIS,ST-4114,ACREVIS,NAlog Output 4 Channels, 0~20CREVIS,MA, 12Bit
CREVIS,ST-4112,ACREVIS,NAlog Output 2 Channels, 0~20CREVIS,MA, 12Bit

按传感器原理分浮子式、跟踪式、压力式和反射式等。水位记录主要有：记录纸描述，数据显示或打字记录,穿孔纸带,磁带和固体电路储存等。水位计的度一般在1～3厘米以内，制造的水位计的记录周期有1天、30天和90天等。走时误差,机械钟为2分/日，石英晶体钟小于5分/月。分类浮子式水位计其原理是由浮子感应水位的升降。有用机械直接使浮子传动记录结构的普通水位计，有把浮子提供的转角量转换成增量电脉冲或二进制编码脉冲作远距离传输的电传、数传水位计，还有用微型浮子和许多干簧管组成的数字传感水位计等。应用较广的是机械式水位计。应用浮子式水位计需有测井设备，只适合于岸坡、河床冲淤很小的低含沙量河段使用。测井见图1。如果VS的控制极没有输入触发脉冲Ug，VS仍然不能导通，只有在U2处于正半周，在控制极外加触发脉冲Ug时，晶闸管被触发导通。画出它的波形（c）及（d），只有在触发脉冲Ug到来时，负载RL上才有电压UL输出。Ug到来得早，晶闸管导通的时间就早；Ug到来得晚，晶闸管导通的时间就晚。通过改变控制极上触发脉冲Ug到来的时间，就可以调节负载上输出电压的平均值UL。在电工技术中，常把交流电的半个周期定为180°，称为电角度。这样，在U2的每个正半周，从零值开始到触发脉冲到来瞬间所经历的电角度称为控制角α；在每个正半周内晶闸管导通的电角度叫导通角θ。很明显，α和θ都是用来表示晶闸管在承受正向电压的半个周期的导通或范围的。