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Pico 1216 with 5000kg load cell in compression
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trendmarine
- Newbie
- Posts: 0
- Joined: Thu Aug 26, 2010 3:25 pm
Pico 1216 with 5000kg load cell in compression
We're trying to use a Pico 1216 to record the compressive loads on a LCM STA-4 5000kg load cell.
We are exciting the load cell with a stable dedicated 10V supply, and normally the output voltage is reasonably linear, and yields the following (according to its calibration certificate):
0V = 0kg
-1.99mV = 500kg
-9.95mV = 2500kg
-19.91mV = 5000kg
But we get a lot of noise on the zero reading, and no matter how much load we place on the cell, we cannot get a reading to register.
We cannot find a setting to configure the Pico 1216 to accept or record negative voltage. Is it capable of this, or is there another trick we can use to spoof it?
We are exciting the load cell with a stable dedicated 10V supply, and normally the output voltage is reasonably linear, and yields the following (according to its calibration certificate):
0V = 0kg
-1.99mV = 500kg
-9.95mV = 2500kg
-19.91mV = 5000kg
But we get a lot of noise on the zero reading, and no matter how much load we place on the cell, we cannot get a reading to register.
We cannot find a setting to configure the Pico 1216 to accept or record negative voltage. Is it capable of this, or is there another trick we can use to spoof it?
Re: Pico 1216 with 5000kg load cell in compression
Hi the Picolog 1216 measures only 0 to 2.5V you have two options really:
1) You create a circuit that makes it positive and amplifies the signal
or
2) You use the ADC20 which would work directly.
http://www.picotech.com/precision-data-acquisition.html
Kind regards
1) You create a circuit that makes it positive and amplifies the signal
or
2) You use the ADC20 which would work directly.
http://www.picotech.com/precision-data-acquisition.html
Kind regards
Ziko
Technical Specialist
Technical Specialist