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Connecting a pH probe (from Hamilton) to the NI-9208

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Dear all,

 

I am trying to connect an Hamilton pH probe to the NI-9208 module. 

The pH probe is connected to a transmitter (Arc Wi 2G Adapter BT)  and the wiring diagram is this one:

Iforire_0-1700147639352.png

So, I have done the connection like that:

Arc 2G Wifi

NI9208

1

AI0

2

COM

3

AI1

4

COM

7 and 8 are connected to a 24VDC

But it is not workin.... What did I do wrong?


Thanks a lot!!!!

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Solution
Accepted by topic author Iforire

As per your transmitter it needs a power source for the 4-20mA channels.

santo_13_0-1700150173206.png

 

You must connect as per this diagram (NI-9208 will be your PCS),

santo_13_1-1700150301248.png

 

 

Arc 2G Wifi

NI9208

1

+24V

2

AI0

3

+24V

4

AI1

Santhosh
Soliton Technologies

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Message 2 of 4
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Thanks a lot Santosh, I'm quite a beginner in all that 🙂

Actually, that's the first thing I've tried, but it seems I did it wrong.

Also I need to connect the COM of the NI-9208 to the GND of the power source, right?


Thank you

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Yes, all three - sensor, transmitter and NI-9208 must share the same GND i.e., COM.

 

Depending on wiring constraints, this also works,

 

Arc 2G Wifi

NI9208

1

VSUP

2

AI0

3

VSUP

4

AI1

+24V

VSUP

GND

COM

Santhosh
Soliton Technologies

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