With the help of a couple of guys on the forum I have managed to get very close to a final production unit of my electronic water level switch. There are 2 versions, a modular upto 4 channel unit and a single channel unit. The modular unit has a motherboard that takes the power input, then 4 slots for the daughterboards, then a display board. The single channel unit has onboard power supply with fuse the varistor. Power supply is
Recom 2W, 1 Output, Embedded Switch Mode Power Supply (SMPS), 12V dc, Maximum of 167mA
The units are all solid state, resistors, capacitors, diodes, transistors, leds and a relay. The power supply used on the 4 channel unit is the RS-35-12 SMPS
I only have one large hurdle to overcome, that is CE marking and more specifically EMC testing.
The pictures are of the last prototype and things have been added to the design since. I have ground tracking linking all the mounting holes as they will be mounted to metal chassis plates. chassis plate with have an earth point.
My question is, is there anything else I need to consider with the design? The use is Industrial (power stations etc)
Recom 2W, 1 Output, Embedded Switch Mode Power Supply (SMPS), 12V dc, Maximum of 167mA
The units are all solid state, resistors, capacitors, diodes, transistors, leds and a relay. The power supply used on the 4 channel unit is the RS-35-12 SMPS
I only have one large hurdle to overcome, that is CE marking and more specifically EMC testing.
The pictures are of the last prototype and things have been added to the design since. I have ground tracking linking all the mounting holes as they will be mounted to metal chassis plates. chassis plate with have an earth point.
My question is, is there anything else I need to consider with the design? The use is Industrial (power stations etc)