Hardware suggestion for connecting Burkert pressure transducers to NI cDAQ9188

[aamirzrgr]

Hi All, I am new to this forum and a beginner for using NI-LabVIEW. I intend to wire five Burkert 8316 pressure transmitters through NI-cDAQ-9188. Kindly suggest the suitable hardware for it and the connection scheme for connecting the transmitter with following specifications

Operating Voltage: 7......33V DC

Output Signal 4-20 ma

fitted with a 5 wire connection terminal as shown in attached figures

Best Regards

Aamir

[Henrik_Volkers]

The NI-cDAQ-9188 is a chassis to hold DAQs ... do you already have some DAQs in there you migth want to use?

Seems that a 9203 with 8 20mA inputs would do the job, however there are more details to look at:

Needed bandwidth and accuracy just to name two .. (sensor bandwidth is about 500Hz OK )

An additional power source will be needed too  (7-33V, ~150mA),   maybe the chassis power supply can be used, but could be a soucre of noise....

Pick up the phone and talk to your local NI app engineer?

If you need assistance on how to wire, post your DAQ and the type number (56x xxx) of the sensor.

[aamirzrgr]

In addition to NI-cDAQ-9188 We have following DAQs

1. NI-9216 for 5-6 RTD's which we may use.

2. NI-9476 for about 20 Solenoid Valves.

In addition, we have a power supply NI-PS15.

For our pressure transmitters, we have an accuracy of 0.5%FS and reading error of 0.2-0.3% is manageable for our application.

As suggested by you module NI-9203 should be suitable.

One more clarification my is that if we can use NI-PS15 as an additional power source for pressure transmitters. 

If that is the case please suggest the wiring scheme of NI-9203 with sensor ident No: 563778. 

Aamir

[Henrik_Volkers · Accepted solution]

Seems that your powersupply has enough power to supply your sensors.

If you use the 9203 :

Connect powersupply neg (-) output to pin 9 (COM) of 9203

Each sensor pin 1 (V+, brown) to positive power supply (+)

Each sensor pin 4 (Current out, black) to AIx , x=0-7, corresponding connetor of 9203

Check each channel with highest samplerate (200kHz)  and capture 300ms (60k sample) 

Look at the result.  You migth see hum (line frequency .. coarse sine) and noise and spikes (switched power supply, other stuff). (Look at the power spektrum, extra vi for that;) )

Usually if you sample with 10kHz and capture 300ms (fits for 50Hz and 60Hz line freq) and do a factor 3000 decimation with mean (see vi help) you get a nice smooth signal.