This is the best low cost pressure transducer
available to measure ground water level, river level,
lake level, or any water body where USGS primary record
accuracy is not required. The AquaSPT is a true 2-wire
transmitter with 4-20 mA output, and operates on 9 VDC.
The 2490 comes with a data logger which records 6000
readings and it is programmable from one reading per
minute to one reading per hour.
The AquaSPT is all stainless steel, rugged and simple
to operate. It is .75 inches in diameter allowing
insertion into small diameter wells for ground water
level monitoring. Several scale ranges are available to
meet all of your water level/pressure requirements.
The jacket of the electrical cable is thick and
rugged. Inside, along with the wires, is a small tube
for venting the back side of the transducer into the air
for automatic compensation of atmospheric pressure
changes. The standard cable length is 25 ft but
additional lengths up to 500 ft can be ordered.
When sizing an SPT, pick a range slightly larger than
the maximum expected change in water level or pressure.
Remember, that when you put an SPT into a stream, you
don't have to go to the bottom of the stream, but only
deep enough to get below the lowest expected water
level.
These transducers have an accuracy of .2% FS.
Accuracy for PT's is always as a percentage of FS (Full
Scale). Therefore you want to use the smallest possible
range that works for your application to minimize your
error. Example: a 10 PSI PT, the range is 23'. The
accuracy is .2% of 23' = .046' = ±.55".
Note: 1 PSI (pounds per square inch) = 2.3' of H2O =
27" of H20.
804-001 2490 AquaSPT-Range 0-3
ft. 8 lbs.
804-002 2490 AquaSPT-Range 0-15
ft. 8 lbs.
804-003 2490 AquaSPT-Range 0-30
ft. 8 lbs.
804-006
Vented
Transducer Cable
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