ellisd1984 Posted May 30, 2020 Report Share Posted May 30, 2020 I'm fitting an EGT sensor kit from VEMShttp://shop.vems.hu/catalog/product_info.php?cPath=1_9&products_id=129 it requires a 12v supply which isn't a problem, what I need to know is can I still use the dedicated senor ground or should I use another? any help on calibrating this sensor will also be greatly apprectiated. Thanks David Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 30, 2020 Report Share Posted May 30, 2020 Yes, since it only has one ground wire and it is a low current device it would be best to connect this to ECU sensor ground. Set up would look something like this: Quote Link to comment Share on other sites More sharing options...
ellisd1984 Posted May 30, 2020 Author Report Share Posted May 30, 2020 Thanks for that, I wasn't sure if it would cause problems mixing 12 & 5v stuff on the same ground so thanks for clearing it up for me. Quote Link to comment Share on other sites More sharing options...
ellisd1984 Posted July 14, 2020 Author Report Share Posted July 14, 2020 Just as a bit of an update I've now installed this sensor and getting values on a cold engine (left over night) of over 2v which works out at about 400C which obviously isn't right. any idea where I should be looking or have I missed something with the wiring? Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 14, 2020 Report Share Posted July 14, 2020 Assuming you have verified that 2V with a multimeter then yes, I would say it is possibly faulty orthe thermocouple is the wrong type or failed or there is a wring problem. If you short the two thermocouple +/- pads together on the PCB with a paperclip or something do you then get 0V output from the amp? If you disconnect the thermocouple from the amp and measure the voltage across the thermocouple wires directly, how many mV do you get? Should be about 1mV at room temp. 400°C is about 16mV. Quote Link to comment Share on other sites More sharing options...
ellisd1984 Posted July 14, 2020 Author Report Share Posted July 14, 2020 Thanks for replying, the thermocouple is soldered directly to the the amp pcb, before I go messing on with anything I'm waiting for VEMS to get back to me as if it's faulty it should still be under warranty. Quote Link to comment Share on other sites More sharing options...
dx4picco Posted July 20, 2021 Report Share Posted July 20, 2021 Would a vems amp together with a link egt sensor work? Do I need to weld it on the amp or I can put a plug like the vems connector pair and have some wires going to the amp? Quote Link to comment Share on other sites More sharing options...
Adamw Posted July 20, 2021 Report Share Posted July 20, 2021 The thermocouple wires need to be soldered direct to the PCB. If you need to extend the Thermocouple wires or want a connection somewhere then it needs to be done with special "compensation cable" and proper thermocouple connectors (chromel/alumel). The wires from the 9 pin plug that go to the ECU can use a connector and dont need to be anything special. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.