52
6 FIeLd InStaLLatIon
poSItIon the LeveL troLL
Lower the Level TROLL gently to approximately the desired depth.
Position the instrument below the lowest anticipated water level, but not
so low that its range might be exceeded at the highest anticipated level.
Refer to the tables below for usable depth.
Note that a BaroTROLL is not designed for submersion. Position it above
water level near a submerged Level TROLL.
Non-Vented Level TROLL
Range
Effective Range
Usable Depth
PSIA
PSIA
kPa
Meters
Feet
30
15.5
106.9
0–10.9
0–35.8
100
85.5
589.5
0–60.1
0–197.3
300
285.5
1968
0–200.7
0–658.7
500
485.5
3347
0–341.3
0–1120
1000
985.5
6795
692.9
0–2273
* At sea level (14.5 PSI atmospheric pressure).
Vented Level TROLL
Range
Usable Depth
PSIG
kPa
Meters
Feet
5
34.5
0–3.5
0–11.5
15
103.4
0–11
0–35
30
206.8
0–21
0–69
100
689.5
0–70
0–231
300
2068
0–210
0–692
500
3447
0–351
0–1153