Backscatter instrument calibration 15 July 2005
Boss, Slade, Loftin

ECOVSF 004r red connected via minilogger, logged in procomm

LSS546, LSS585 connected via AquaScat system, data read from 
  AquaTalk software, Data Acquisition panel

ac-s used to determine bead concentration in horse bucket
ac-s scrapped since the water was too cold and was degassing...


1) DIW, ecored-1.txt
2) 6 drops, 2um Duke poly, ecored-2.txt
3) 25 drops, ecored-3.txt
4) 50 drops, ecored-4.txt
5) 100 drops, ecored-5.txt
6) ~175 drops (ran out of beads), ecored-6.txt

Look at instrument resonse after saturation
7) added Maalox (mint flavored!), ecored-7.txt
8) doubled Maalox, ecored-8.txt
9) doubled Maalox, ecored-9.txt
10) doubled Maalox, ecored-10.txt
11) doubled Maalox, ecored-11.txt
12) doubled Maalox, ecored-12.txt

13) Black tape in DIW water, ecored-blacktape.txt

Voltages read from AquaTalk, each LSS placed in water independently
1) 546 = 0.08 V, 585=0.03 V, Supply 11.98V
2) 546 = 0.14 V, 585 = 0.05 V
3) 546 = 0.47 V, 585 = 0.14 V, numbers seem reasonable down to Supply ~9.25 V
4) 546 = 1.02 V, 585 = 0.30 V
5) 546 = 2.07 V, 585 = 0.57 V
6) 546 = 3.53 V, 585 = 0.97 V, Supply 11.98
7) 546 = 5.00 V, 585 = 3.56 V
8) 546 = 5.00 V, 585 = 5.00 V
9) 546 = 5.00 V, 585 = 5.00 V
10) 546 = 5.00 V, 585 = 5.00 V
11) 546 = 5.00 V, 585 = 5.00 V
12) 546 = 5.00 V, 585 = 5.00 V

13) 

Tested 546 = 3.53 V for changes in supply voltage (as read 
by AquaTalk) - things seem good down to about 

LSS 546 is much more sensitive to concentration (both using "low gain" output) - don't put it 
close to the bottom for OASIS 2005