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  1. B

    Check my wiring scheme please

    Are pins 3/4 marked + and -? No, not on the PID, just referenced that way on the official wiring diagram Are they connected to the + and - terminals of the SSR? Yes Does the LED go on and off on the SSR? No What is the voltage across the input of the SSR when it's supposed to be on and it's...
  2. B

    Check my wiring scheme please

    My error, sorry, DC is from pins 3/4 on PID, not 4/5. 23VDC is the reading on my meter. SSR VDC is 3-32 There isn't an extra set of pins 3/4, that is just an illustration of where a different type would be connected, i.e. to the same pins.
  3. B

    Check my wiring scheme please

    FYI DC voltage picked up by my meter from pins 4/5 from the PID, so 'trigger power' available. AC voltage reading across Terminal 2 on SSR and Pin 1 on PID is OK at 238v ?SSR not switching on current to cartridge heater despite getting DC trigger from PID?
  4. B

    Check my wiring scheme please

    Original wiring diagram in post#1 for PID. What other info would you like to know? My apologies, I know next to nothing re electronics. Input parameters??? I have set the PID to use K thermo, to heat, set to use SSR. Is this what you mean? If the wiring is wrong, can you point out what needs to...
  5. B

    Check my wiring scheme please

    OK, so bought an ohm meter. The resistance through the cartridge heater is 177ohms. So think that is ok. Nil voltage coming to the SSR from the PID controller, despite the 'OUT1' light being illuminated on the PID display. At a dead end here, if my wiring is right (?). Then there's something in...
  6. B

    Check my wiring scheme please

    Thanks Duke, but you lost me at ohm meter! I don't have such equipment I'm afraid. The small light on the SSR has been mentioned previously, see below, by Steve. So I think it is meant to be on when power is going to the heater, which it is not, despite the lamp that is connected indicating...
  7. B

    Check my wiring scheme please

    Thanks for your input to date. So I finished this today. Wired a lamp to it, though didn't have an old style light bulb, had to use an energy saver., low watt. The lamp flashed at rapid regular intervals, like a pulse, so power getting through. Though the light on the SSR does not seem to come...
  8. B

    Check my wiring scheme please

    My error, sorry. They are indeed different. I have them wired to the correct poles on the controller. I was confusing the wires coming from the cartridge heater. They are the same on the cartridge heater, am trusting this is normal?
  9. B

    Check my wiring scheme please

    Thanks Duke. Thanks Duke. I won't be extending, though both wires are the same, so I'm not sure this cartridge heater is fussy about which way it is wired.
  10. B

    Check my wiring scheme please

    Thanks Duke. I Thanks Duke, I would like to reduce the cable/wire length, not the thermocouple unit itself. I appreciate they are a sealed unit. Any lead I cut short would retain the flexible wire sheaf. Sorry,i think I didn't explain well? I'd prefer not have a coil of wire coming from the...
  11. B

    Check my wiring scheme please

    Is it OK to shorten the length of the wire coming from a K Type thermocouple? 1 metre it comes with is too long, looking to reduce that by half.
  12. B

    Check my wiring scheme please

    Thanks Steve. Invaluable advice.
  13. B

    Check my wiring scheme please

    Understood. I think then I should change the main power lead for one that has an earth wire? and connect the thermocouple to that, which should earth the thermocouple and the brass block at the same time.
  14. B

    Check my wiring scheme please

    Thank you for your feedback steve, much appreciated. Would connecting it to the heatsink under the SSR be appropriate? Any ideas as to how to do this with unravelling the protective braid? It will be inserted in the brass block, so I'm assuming it needs earthing in case the cartridge heater in...
  15. B

    Check my wiring scheme please

    Would you folk mind having a look at my wiring of this control box. I am very inexperienced indeed in this field, my speciality is antique clock movements. I am building a tool to blue steel parts under heat. Below are pics of the planned tool, a pic of my progress in wiring the control box...
  16. B

    K Type thermocouple installation

    "...or perhaps the device is not firmly attached to the threaded part...If the threaded part is only loosely attached to the actual thermocouple, then you may have to use the threaded part to push the tip of the device into or against the thing to be measured" This is indeed/will need to be the...
  17. B

    K Type thermocouple installation

    Thank you Steve. I've got a picture of below of the actual thermocouple I shall be using, differs a little to the one above in fact. You see that the end of the node has a smaller diameter than the threaded retainer, which makes me think I should counter sink this into its own hole past the...
  18. B

    K Type thermocouple installation

    Many thanks duke, appreciated
  19. B

    K Type thermocouple installation

    Hi I'd appreciate some advice re installing a K Type thermocouple, with a small stub end, into a brass block. The brass block will be used to heat and blue steel screws and clock hands. A PID temp controller will be used. Obviously I will need to drill and tap a hole to receive the retainer...
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