how to convert square waves to a physical data

[johnsold]

You need to have someone who understands electrical circuits evaluate what you are actually getting from your sensor and power supply. If that value exceeds the DAQ input limits, then some addtional circuitry will be required to condition the output of the sensor and convert it to a value compatible with your DAQ device.  It may be as simple as a two-resistor voltage divider or it may require an active comparator or level-shifting amplifier.

Lynn

[sgirgin]

i dont wanna take risk decided to buy 10v power supply it is cheap

[sgirgin]

I made the connection as such;

Anf the result;

[johnsold]

There is still something strange about your connections, your DAQ settings or the sensor. Disconnect the DAQ and look at the output of the sensor with an oscilloscope.  If you do not have an oscilloscope, try measuring the output with a multimeter.

Lynn

[TYtanic]

Sgirgin,

Can you attach a picture of your block diagram so we can see the code that you're using to acquire the data? If you're using the DAQ Assistant, can you also attach a picture of the settings you're using for the DAQ Assistant?

[sgirgin]

Hi TYtanic,

Here is my block diagram but not completed yet.The graph you see is belong to another block diagram which i used analog input.Now i am trying to modify it to a counter.Here is where i am;

Here is the message from omega contact so now i am putting a resistance;

The FTB-1302 has a NPN collector output and it is a DC frequency.  Did you use a 2.2K ohm pull up resistor, between the DC positive and the sigm=anl output?

And i will try like this

i will use counter input in place of analog input

[johnsold]

If you wire that circuit to a counter, you may destroy the counter! The counter input will not tolerate any signal higher than 5 V.

You also cannot wire it to an analog input if the power supply is greater than 10 V.

Get some help from someone who knows electronics before you damage some expensive equipment.

Lynn

[sgirgin]

Ok then i postpone the circuit wiring.When it comes to labview part, this time i tired DAQ Assistant and according to sensor characteristics here,

I created a DAQ Assistant as such,

Is it OK?

Regards

[johnsold]

I never use the DAQ Assistant but it looks reasonable. 

Lynn

[sgirgin]

How about this connection.I feed the sensor seperately and use another power supply for DAQ counter input