订货须知
•明确产品功能
•确定产品型号
•声明输入范围
•核定输出性质
•落实定货数量
技术数据
输入                                                                                                                                                                                                  
直流电流(MDFG-1101)  0…1mA/100mA(例:0…10mA 4…20mA 0…20mA)
输入阻抗  ＜70Ω
最大过压  250V
最大过流  Imax+60mA,Imax=输入满度值
零点调整范围  0±5%
量程调整范围  100±5%
直流电压(MDFG-1102)                               0…20mV/300V (例:0…40mV 0…10V 0…200V)                                                                                                                                           
输入阻抗                          电压输入＞1V时，≥0.5MΩ；电压输入≤1V时，≥200MΩ                                                                                                                                                        
最大过压                               电压输入＞1V时，500V；电压输入≤1V时，250V                                                                                                                                           
零点调整范围                          0±5%                                                                                                                                                        
量程调整范围                          100±5%                                                                                                                                                  
交流电流(MDFG-1103)  0…5mA/100mA(例:0…10mA  0…100mA)
输入阻抗  ＜70Ω
最大过压  250V
最大过流  Imax+60mA,Imax=输入满度值
零点调整范围  0±5%
量程调整范围  100±5%
交流电压(MDFG-1104)                               0…10V/220V (例: 0…10V 0…200V)                                                                                                                                           
输入阻抗                          ≥0.5MΩ                                                                                                                                                       
最大过压                               300V                                                                                                                                          
零点调整范围                          0±5%                                                                                                                                                        
量程调整范围                          100±5%                                                                                                                                                  
线性电阻(MDFG-1105)     0…10Ω/200KΩ(例:0…150Ω 0…10KΩ)                                                                                                                                          
输入阻抗                          ≥1MΩ                                                                                                                                                        
零点调整范围                          0±5%                                                                                                                                                        
量程调整范围                          100±5% 输入电阻≥3KΩ时                                                                                                                                               
   100±98% 输入电阻＜3KΩ时，即可任意调整                                                                                                         
三端电位器(MDFG-1105S)                                     输入接线端为(21)(22)(23)，（22）接滑线端。其它同上。                                                                                                                                          
输出                                                                                                                                                                                                    
电流输出  4-20mAdc（0-20mAdc及其它特殊输出，定货时请声明）,最大负载＜750Ω(特殊定货＜1KΩ）。
电压输出  1-5Vdc（0-20mAdc时为0-5Vdc）为在电流输出回路内串入250Ω所得，作为辅助输出，与电流输出不隔离。
最大过压  250V
20℃时的精度  ＜±0.1%
稳定性  ＜量程±0.01%/℃
状态指示                                                                                                                                                                                                    
电源LED  红色，电源开
开关  使用细小螺丝刀插入，可控制内藏行程开关，通/断仪表电源。
一般特性                                                                                                                                                                                                     
供电电压  24Vdc±10%，2W。为方便现场连接，仪表在其上下各提供一对电源接线端，实际使用时任选其一接入即可。
最大过压  250V
电流消耗  ＜80mA
工作环境  0-50℃
隔离电压  输入、输出及供电电压之间，1000Vdc
安装  外壳（宽×高×深）=21×82×106mm，安装在U形35mm（推荐使用）或G形导轨上，具体安装尺寸见下图。
连接方式  螺钉连接，0.5-2.5mm²
自动保护功能  当各接线端接入超标准信号时，仪表自动保护功能启动，内部断开接入的超标准信号。待超标准信号解除后，须将该端与外界断开冷却20分钟后，方可重新投入使用。
标识  中文(可提供英文标识)
密集安装时模块之间留下间隙，工作环境温度可高至70℃。仪表运行时，上下方不应有覆盖物。

 

导轨、安装
 
推荐使用常见的U形35mm导轨。