Seismic accellerometer power supply question 1

[rbrougha]

Hi,

I have just aquired a seismic accelerometer the requires a constant current power source. The spec for the power supply is 15-30VDC 1-6ma constant current. Here is the data sheet on this sensor.

http://www.vibrametrics.com/pdfs/1030.pdf

I'm guessing that this device works by varying the voltage of the constant current power supply as acceleration increases. Am I right? If so, how critical is the quality of the power supply. This sensor will see limited use so I would rather buy a benchtop power supply that can be used for more than just this application. Can you suggest a reasonably inexpensive cc power supply that is suitable for this sensor.

Thanks Ray

 

[nbucska]

Use two 9 V batteries in series. You may use rechargable ones, too ! It will last many days.

<nbucska@pcperipherals.com>

 

[rbrougha]

nbucska,

Thanks for the info.

Ray

 

[nbucska]

From a pair of 9V alkaline batteries you could expect about
100 hours, or you could buy 3 rechargable ones and keep one
on the charger.

<nbucska@pcperipherals.com>