dudical26

iTrader: (17)

KevinD - which wire on the flow sensor is the output for logging?

I want to do this with my ZT2

KevinD

iTrader: (56)

that would be the yellow wire coming from the flow sensor. it is "sensor V" in the DDS3 box. i just ran the aux in zeitronix wire into the DDS3 box and connected it at the terminal... no need to cut and splice into the wire elsewhere.

dudical26

iTrader: (17)

Very cool thanks.

What have you done to convert V to cc flow?

Are you doing the calculations manually or is there something in EvoScan or the ZT2 software that lets you scale the input, I have not looked at it yet.

KevinD

iTrader: (56)

i did a calibration run at 100% duty. with the 1mm nozzle exactly 500 grams of water was measured coming out of the system in 1 minute (i had the nozzle aimed into a empty gallon jug of water, and weighed it before and after injecting the water into it). and water is 1g/cc thus 500cc/min flow rate at 100% duty. sense the IDC of this car was about 90% at 7000rpm, and the voltage of the flow sensor signal was around 2.2V.

also the "off" voltage or calibration voltage was around .5V, so calibrating the 2.2V with the off voltage is 1.7V for (500cc/min*90%IDC) it should be a linear scale for the flow sensor, so 1V on the flow sensor is about 265cc/min. everything i just did here was done off the top of my head. exact numbers i will have to use the actual data which i don't have with me right now.

also, richard might be able to provide more insight in the V/flowrate ratio of the flow sensor. by my back of the envolope estimate the flow sensor would be maxed out around 1060cc/min at 4.5V measured in the zeitronix.

dudical26

iTrader: (17)

When I get a chance to mess around with this I will see if I can have the ZT2 or have EvoScan convert the V into CC flow so that it can be graphed with all other logged parameters.

KevinD

iTrader: (56)

yeah the zeitronix software leaves something to be desired. its pretty pathetic as far as what you can do with the aux input. additionally, they haven't come out with anything new in over 3 years except for the alarm thingy, and the new gauge (which can only display AFR... weak!).

i think i'm going to be getting one of the innovate systems so i can record 32 data parameters at once including 4 EGTs at a time to see the REAL distribution of the methanol in a cylinder by cylinder basis.


with the zeitronix data that i do have, i simply export the datapoints iwant as a xlm, and import it into matlab where i can manipulate the data to be in any unit/scale i want

dudical26

iTrader: (17)

I am not familiar with matlab. I log my ZT2 data using EvoScan, which I think I will be able to make it convert the V into CC. If not I import that data in DataLogLab(DLL) which will also be able to convert the V into CC.

I imagine DLL is much like matlab.

KevinD

iTrader: (56)

matlab is hardcore engineering/math software...

DLL is nothing but a GUI (graphical user interface). its pretty cool for what it does, and i use it too when i'm tuning cars because its simple. but other then the fact that both matlab and DLL plot, thats all they have in common

scotheocelot

Yeah i miss doing MatLab. I mess around with AutoCad every once in a while. I need to take a refresher coarse. Its been a while since i designed using that software. When i last used it I was designing Turbine wheels.

dudical26

iTrader: (17)

I went out and hooked up my ZT2 to the V output on the flow sensor.

Then I used KevinD's estimates to convert V to CC. I did (V-0.45)*265

Then I graphed it all in DLL, it looks good.

hellcat

iTrader: (4)

One question abou that install, how do difficult is it to fill the tank?

KevinD

iTrader: (56)

i used my remote filler to fill it. its a long hose i feed into the top of the tank with basically a funnel at the other end. (it came with the kit). its no more difficult to fill then when the tanks are mounted on the back of the seat. however, i've developed an even better way to mount the tank making it the easiest way to fill the tanks. i'll have pictures monday (i'll be gone this weekend).

hellcat

iTrader: (4)

I love that location and eventually may attempt it myself.

Richard L

iTrader: (5)

+1

hellcat

iTrader: (4)

Thank you guys for all of your help! I only have to install the jet and give it a ruff set up til tomorrow morn.