AquaVent Quick Start Guide
AquaVent Ranges
AquaVent Models are rated to a specific submergence depth (Table 1).
The choice of model depends on the accuracy of the level required
and the submergence depth. Most important, your selection should be
based on the maximum anticipated water level fluctuation.
Note
The AquaVent logger
can withstand over-
pressurization of 2
times the intended
range, e.g. a Model M10
can accommodate a
fluctuation of
20 meters or 60 feet and
still record pressure.
However, over-range
accuracy is not
guaranteed.
AquaVent
Models
Submergence
Depth
Accuracy
M5
5 m (16.4 ft.)
± 0.3 cm (0.010 ft.)
M10
10 m (32.8 ft.)
± 0.5 cm (0.016 ft.)
M20
20 m (65.6 ft.)
± 1 cm (0.032 ft.)
Table 1 - AquaVent Ranges
Measurement Fundamentals
Note
To adjust all readings
in your AquaVent data
file to depth to water
below a well casing (
d
),
record a manual water
level measurement using
a water level meter.
This reading should
correspond in data and
time with an actual
AquaVent recording.
Use this as a reference
datum in the Manual
Data Adjustment option
in the Software Data
Wizard.
AquaVent loggers detect both
water (
W
) and barometric
pressure (
+B
).
However
, a vent
tube to surface allows barometric
effects on the pressure sensor
to be eliminated (
-B
). Therefore,
AquaVent loggers provide
readings of the actual pressure
of just water above the pressure
sensor zero point (
A
).
A
=
(W
+
+B)
+
(-B)
Therefore,
A
=
W
A
= AquaVent readings
W
= Water column height
+B
= Barometric pressure
detected by the pressor sensor
-B
= Barometric pressure
applied through the vented cable
Verifying Readings
Compare AquaVent readings (
A
)
with a measured depth to water
level value (
d
) (Using a Water
Level Meter). The deployment
depth of the AquaVent (
D
),
minus the manual depth to water
measurement (
d
), should equal
the AquaVent reading:
D - d = A
- 5 -
Tip
It is recommended to
take a manual water
level measurement
before installing an
AquaVent logger, shortly
after installation,
periodically during your
monitoring interval,
and at the end of your
measurement period.
Use these measurements
to verify AquaVent
readings, and for data
adjustments later on.
Ensure you take manual
readings as close in
time as possible to a
scheduled AquaVent
reading.