I've got a Dash2, and an AX22 connected together.
Question 1.
I'd like to use a Bosh crank sensor as a wheel speed sensor..
The Bosh sensor, looks identical to the one that Race-Technology sells, at least visually..
3 leads, Two brown and one blue...
According to the car's wiring diagram, the blue one is am RF shield for the two other wires, its connected to something called: GRRT/GRSW..
Whilst the two others go through the sensor..
So just connect the two brown ones to "Wheel speed input 5-12v Brown " and "5v Reference Output 50mA max Grey" on the dash 2 with a 1k ohm resistor between the wires ??
Question 2.
I've got a VDO dual oil pressure sender, it's rated 0-10 bar 0-160 ohm.
Can I use this sensor with the Dash 2 ?
Wheel speed/oil pressure sensor question..
Wheel speed/oil pressure sensor question..
Last edited by SantaClaw on Sun Aug 23, 2009 6:20 pm, edited 1 time in total.
-1973 Opel GT Racing, Dash2/AX22/Electromotive
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
I've fitted the wheel speed(crank) sensor... I have connected an ohm meter to the leads from the sensor.. It reads 552 ohms.
When I spin the wheel, by hand, it drops to about 496 ohms when it passes the bolt I've placed on the brake disk. I don't have that 1k resistance in place, but should it work once I do ??
I've calculated that there would be 884 pulses per mile..
As the diameter of the tire is 1.82 meters, and there's 1609 meters per mile, sound correct ?
When I spin the wheel, by hand, it drops to about 496 ohms when it passes the bolt I've placed on the brake disk. I don't have that 1k resistance in place, but should it work once I do ??
I've calculated that there would be 884 pulses per mile..
As the diameter of the tire is 1.82 meters, and there's 1609 meters per mile, sound correct ?
-1973 Opel GT Racing, Dash2/AX22/Electromotive
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
here is the page in the Knowledge Base that refers to how different types of sensors are wired, that might be of help: http://www.race-technology.com/wiki/ind ... WireSensor
With regards to the VDO oil pressure sender, this can be used with the DASH2 as long as you have the correct calibration to configure the DASH2.
With regards to the VDO oil pressure sender, this can be used with the DASH2 as long as you have the correct calibration to configure the DASH2.
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- Posts: 82
- Joined: Wed Nov 29, 2006 10:36 pm
- Location: South Africa
- Contact:
This is from an old post of mine, but the data is still valid. This is the bar versus resistance data you need for the VDO 10 bar sensor. you will need to convert it to voltage by adding a pull-up resistor to +12v to create a voltage divider.
Bar Resistance
0 = 7.2
0.5 = 18.2
1 = 28.2
1.5 = 39.2
2 = 49.2
3 = 68.2
4 = 87.2
5 = 104.2
6 = 121.2
7 = 137.2
8 = 153.2
8.5 = 160.2
9 = 167.2
10 = 181.2
If you need info on how to calculate the voltage divider then have a look here:
http://www.race-technology.com/forum/vi ... light=audi
Bar Resistance
0 = 7.2
0.5 = 18.2
1 = 28.2
1.5 = 39.2
2 = 49.2
3 = 68.2
4 = 87.2
5 = 104.2
6 = 121.2
7 = 137.2
8 = 153.2
8.5 = 160.2
9 = 167.2
10 = 181.2
If you need info on how to calculate the voltage divider then have a look here:
http://www.race-technology.com/forum/vi ... light=audi
Regards,
Gary...
Johannesburg
South Africa
Gary...
Johannesburg
South Africa
GMS Racing wrote:This is from an old post of mine, but the data is still valid. This is the bar versus resistance data you need for the VDO 10 bar sensor. you will need to convert it to voltage by adding a pull-up resistor to +12v to create a voltage divider.
Bar Resistance
0 = 7.2
0.5 = 18.2
1 = 28.2
1.5 = 39.2
2 = 49.2
3 = 68.2
4 = 87.2
5 = 104.2
6 = 121.2
7 = 137.2
8 = 153.2
8.5 = 160.2
9 = 167.2
10 = 181.2
If you need info on how to calculate the voltage divider then have a look here:
http://www.race-technology.com/forum/vi ... light=audi
So in other words I need a resistor that's approx 180 ohms. ?
-1973 Opel GT Racing, Dash2/AX22/Electromotive
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
-
- Posts: 82
- Joined: Wed Nov 29, 2006 10:36 pm
- Location: South Africa
- Contact:
I used a 15 Ohm resistor as it gives a wider voltage spread.
Note that I measured 4.98V on the +5V reference out from the DL1. You just input the voltage against the corresponding pressure value into the table provided to get your quadratic equation.
My equation is shown at the bottom of the pic (with grey background).
The calculation for Vout is:
Vout = Vin*((R2)/(R1+R2))
Note that I measured 4.98V on the +5V reference out from the DL1. You just input the voltage against the corresponding pressure value into the table provided to get your quadratic equation.
My equation is shown at the bottom of the pic (with grey background).
The calculation for Vout is:
Vout = Vin*((R2)/(R1+R2))
Regards,
Gary...
Johannesburg
South Africa
Gary...
Johannesburg
South Africa
GMS Racing wrote:I used a 15 Ohm resistor as it gives a wider voltage spread.
Note that I measured 4.98V on the +5V reference out from the DL1. You just input the voltage against the corresponding pressure value into the table provided to get your quadratic equation.
My equation is shown at the bottom of the pic (with grey background).
The calculation for Vout is:
Vout = Vin*((R2)/(R1+R2))
I've measured my refferance to 4,88v
I see what you mean..
But then I know what I need. I already did that calculation using 4,88v and a 180 ohm, resistance, that would mean 0.45 v @ 0 bar..
-1973 Opel GT Racing, Dash2/AX22/Electromotive
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
-1992 Opel Vectra C20NET - Turbo Converted
-2009 Polaris 600RR
Current Draw
Just a reminder, using 15 ohms at 1 BAR you have a current draw of 116mA. According to the technical specs for the DL-1 the 5V output is only good for 100mA.
http://www.race-technology.com/wiki/ind ... cification
Paul
http://www.race-technology.com/wiki/ind ... cification
Paul
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- Posts: 82
- Joined: Wed Nov 29, 2006 10:36 pm
- Location: South Africa
- Contact:
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