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OMEGA ACC786A and LJU6


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3 replies to this topic

#1 shabadan

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Posted 12 April 2013 - 05:57 AM

Hello,
I am planning to buy both of them but I would like to be sure they can be connected.
can LJU6 provide the sensor power requirement or I need to buy the OMEGA power supply (e.g. ACC-PS2)?
I would be grateful if you could give me any suggestion for connecting the OMEGA accelerometer ACC786A here to LabJack U6 without the OMEGA power supply.

Thanks
Toni

#2 LabJack Support

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Posted 12 April 2013 - 11:40 AM

The "power requirement" spec is not very clear: Voltage Source: 18 to 30 Vdc Current Regulating Diode: 2 to 10 mA Does that mean it needs both? I suspect it is an ICP/IEPE type sensor and needs a constant current source somewhere between 2 mA and 10 mA, and the voltage of that constant current source needs to be 18-30V. The U6 cannot provide a constant current supply, so you will need to provide that, but perhaps you are trying to avoid buying a $530 power supply for a $185 sensor. For other options, try searching for "iepe current source", "icp current source", "iepe power supply", or "icp power supply".

#3 shabadan

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Posted 13 April 2013 - 01:59 AM

...but perhaps you are trying to avoid buying a $530 power supply for a $185 sensor.

Exactly!I believe it is not a good idea and, however, out of my budget.
I have basically no electronic knowledge but, reading here I had a feeling that it could be a no so costly hardware.
Is there any chance you will produce and sell shortly such kind of accessory?May be a new LJTick-InAmp that provides also the power for ICP sensors?
thanks

#4 LabJack Support

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Posted 15 April 2013 - 09:35 AM

We have no immediate plans to make a signal conditioner for ICP & IEPE sensors, but will put it on our list to consider.

You might look at other types of sensors that are powered by a voltage source and provide a high-level (0-5V, 0-10V, +/-10V, etc.) voltage output signal. We have used some MEMs sensors like this from Analog Devices and others.

You might check with Measurement Specialties also:

http://www.meas-spec...on-sensors.aspx


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