RSJ-4 Loop Circuit Resistance Monitor

The RSJ-4 is used when need to indicate the absence of the loop circuit resistance and give an alarm.

General Information                                                       

The RSJ-4 loop circuit resistance monitor is used when need to indicate the absence of the loop circuit resistance and give an alarm. The product has a 4-position switch to choose the operating power.

When the load is normal, the normal state indicating lamp would be lighten up, the output contacts 4# and 3# connected ; while the connectors 2# and 1# disconnected. When the loop circuit resistance increased (for example ,because of the heaters aging or one of a heater which belong to a parallel connected heater opened circuit), the normal state indicating lamp would be turned off,while  the alarm indicator lamp turned on , simultaneously the output alarm contacting status would be changed. Namely, when the corresponding operating power is absent or falling down to 20%,the accurate action could be make in time. The monitor also can sample the supply voltage and continuously revise the reference voltage value so that can avoid any misoperation when the power supply is fluctuating .This product is especially suitable for monitoring the heaters which are parallel connected . 

 The device has some advantages like connected easily, installed conveniently ,strong ability to resist current impact and so on.

Technical parameters                                                      

Performance                       Characteristics                                

Rated voltage                       AC110V/220V                                                    

Start Current                        20% optional load absent

Ambient  humidity                ≤95%RH                                                     

Ambient  temperature             -25°C~+55°C          

Defend class                         IP2X    

Rated frequence                  50/60Hz                   

Max monitoring current             5A             

Withstand resisting impact current   20A/1S             

Power frequency withstand voltage 2000V/min  

Output contact capacitance         5A,250VAC  or 30VDC               

Responding time                           <5 s

Life time                                  >100000 hours

Dimension                               90*45*59(  to be used 35mm Guide Rails to install )

 

RSJ-4 Loop Circuit Resistance Monitor