In dry condition (all probes open), all the transformer's contacts are also open. If the base probe COM and the next level probe are closed due to a liquid presence, the contact for a given probe will close, e.g. once the first R1 level probe (the COM base probe and the R1 level probe closed) is submerged, the 11-12 contact will close. The same procedure applies to the R2 and R3 level probes. On the other hand, once the liquid level drops below the probe level (the COM probe and the level probe open), the contact for a given probe will open as well.
How to connect the probes
The electrode probe is connected by means of a cable with wire diameter up to 1 mm and maximum length of 100 m.
Output 3-4-5-6 galvanic separated.
|Power supply voltage||230 V AC|
|The executive element||3 x relay|
|Maximum load current||3 ├Ś 8 A|
|Contact configuration||3 ├Ś NO|
|Separation of the contact||YES|
|Voltage of measuring outputs||6 V|
|Type of flood probe||4 x PZ2|
|Probe clamps||separated from the transformer network|
|Contact switch delay||max. 2 s|
|terminal||screw terminals 4,0 mm┬▓|
|Tightening torque||0,5 Nm|
|Power consumption||1,1 W|
|Working temperature||-25 ├Ě 50 ┬░C|
|dimensions||3 modules (52,5 mm)|
|Assembly||on rail 35 mm|
|Level of security||IP20|
The probe is designed to work with liquid control relays PZ-829, PZ-829 RC, PZ-831 RC, PZ-832 RC