Post by fargozombie on Feb 19, 2018 5:38:28 GMT -8
hello...I have a question regarding the length of the Renogy Temperature Sensor-Remote (TS-R) thermocouple (TC) cable and I am sharing a method for attaching the probe end to a battery...
Is it acceptable to cut the length of the TC cable (RNG-CTRL-TS) to reduce the amount of spare cable? Based on I my experience/knowledge, the length of TC wire (especially shorter) will not affect the millivolt output. Does the Renogy-Wanderer charge-controller use any 'tuning' of the TS-R input for a specific TC cable length circuit resistance which may effect the temperature compensation coefficient if I shorten the length of the TC cable?
I have seen may posts, not just this forum, relative to mechanically attaching the battery temperature sensor. I have discovered that other solar component manufactures' temperature sensors have a 'ring-lug' at the 'hot' junction end of the TC cable.
So, my idea was to use an a electrical connector;
I found that a connector sized for #14 - #6 AWG Stranded wire fit the probe-end diameter of the battery temperature sensor (almost exactly) connector product description.pdf (420.2 KB). Two simple modifications to the electrical connector for this application; First, I had to grind (Dremel tool & grinding stone) the set-screw to reduce the conical shape to a flat profile so that the set-screw threads would engage before contacting the TC-probe. The TC probe diameter and the electrical connector opening are almost the exact diameter. Second, the electrical connector had a 1/4" diameter hole which I enlarged to 5/16" diameter to fit the battery negative terminal stud size.
Probably overthinking this, but I believe that this method of mechanical attaching the battery temperature sensor is the most effective way to measure the temperature of the battery. This electrical connector is Aluminium, which has excellent thermal conductivity properties, and mechanically connecting to the battery negative terminal should provide the quickest/most accurate internal battery temperature sensing... however, not really sure how much of an impact the temperature compensation input to the Renogy-Wanderer charge-controller has on the battery charge rate. No data available, I suspect this is more for a high temperature charge 'cut-off'...
BTW, this is a mobile application with (1) Renogy 100W Monocrystalline panel mounted on my off-road teardrop camper trailer roof-rack and the Renogy-Wanderer solar charge-controller mounted in my trailer tongue-box.
Is it acceptable to cut the length of the TC cable (RNG-CTRL-TS) to reduce the amount of spare cable? Based on I my experience/knowledge, the length of TC wire (especially shorter) will not affect the millivolt output. Does the Renogy-Wanderer charge-controller use any 'tuning' of the TS-R input for a specific TC cable length circuit resistance which may effect the temperature compensation coefficient if I shorten the length of the TC cable?
I have seen may posts, not just this forum, relative to mechanically attaching the battery temperature sensor. I have discovered that other solar component manufactures' temperature sensors have a 'ring-lug' at the 'hot' junction end of the TC cable.
So, my idea was to use an a electrical connector;
I found that a connector sized for #14 - #6 AWG Stranded wire fit the probe-end diameter of the battery temperature sensor (almost exactly) connector product description.pdf (420.2 KB). Two simple modifications to the electrical connector for this application; First, I had to grind (Dremel tool & grinding stone) the set-screw to reduce the conical shape to a flat profile so that the set-screw threads would engage before contacting the TC-probe. The TC probe diameter and the electrical connector opening are almost the exact diameter. Second, the electrical connector had a 1/4" diameter hole which I enlarged to 5/16" diameter to fit the battery negative terminal stud size.
Probably overthinking this, but I believe that this method of mechanical attaching the battery temperature sensor is the most effective way to measure the temperature of the battery. This electrical connector is Aluminium, which has excellent thermal conductivity properties, and mechanically connecting to the battery negative terminal should provide the quickest/most accurate internal battery temperature sensing... however, not really sure how much of an impact the temperature compensation input to the Renogy-Wanderer charge-controller has on the battery charge rate. No data available, I suspect this is more for a high temperature charge 'cut-off'...
BTW, this is a mobile application with (1) Renogy 100W Monocrystalline panel mounted on my off-road teardrop camper trailer roof-rack and the Renogy-Wanderer solar charge-controller mounted in my trailer tongue-box.