tag archives: science

CR1 script to log balance measurements with a campbell scientific data logger

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here’s a script to record time-series of balance measurements (weight data) using a Campbell Scientific CR1000 datalogger and a balance with an RS232 serial interface.
we have been using two dedicated scripts which vary slightly to work with two different balance models, the Mettler-Toledo MS8001TS (polled mode; should work with all current Mettler-Toledo balances based on MT-SICS) and the Kern DE35K0.5D1 (set to continuous output).

download: (.cr1 files, saved as .txt)
CR1000 script to log output from a Mettler-Toledo MS8001TS balance
CR1000 script to log output from a Kern DE35K0.5D balance1
CR1000 script to log output from four Kern DE35K0.5D balance1

if you just want to have a look at the code, the CR1 scripts are included in text form at the end of this post.

1note that, as it turns out, the strain gauge loadcell measuring system of the Kern DE35K0.5D balance makes it unsuitable for longer term measurements. to get an idea of the drift effect resulting from a continuous load on these balances, here’s a figure from a test run with constant weights: [more...]

[categories: computers & technology, science] [tags: , , ]

360 video: canopy crane ride at the daintree rainforest observatory

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360 video: canopy crane ride at the daintree rainforest observatoryever wondered what it looks like to rise from the ground through and above the rainforest? the video below provides a 360 degree view along a ride in the canopy crane at the daintree rainforest observatory at cape tribulation in far north queensland, australia.

the compilation includes the ascent from the ground through the canopy, a ride above the rainforest, the sampling of a branch, and the final descent back to the ground.

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