E10160-200722
FOP
Page 25
The
conditioner
is
averaging
the
data
readings of the transducer.
conditioner displays the first data
measurement and the
Averaging Time
is
greater than 2 s. Wait until the
Averaging
Time
elapsed.
« WAITING FOR
ACQUISITION »
INFORMATION
During
an
Acquisition
Session
, the conditioner
goes
in
Wait
State
between two successive
data measurements.
This message appears only during a
delayed
Acquisition Session
. It is displayed
between two successive data
measurements and when the
Acquisition
Rate
is larger than 23 seconds.
« WAITING FOR
STARTING
TIME »
INFORMATION
The programmed mode of
acquisition is activated and
the conditioner goes in
Wait
State
until
the
activation
of
the
Acquisition Programs
at
the preset date and time.
This message appears only when the
programmed mode of acquisition is
activated.
5.3 Other troubles
If pressure variations are suspicious, check if those variations are correlated with recorded
temperature and barometric pressure. Check if corrections to raw pressure are applied
correctly.
Try to perform a calibration on-site and contact Roctest with reading for evaluation.
6
MISCELLANEOUS
REFERENCES:
A-1
Terzaghi, K., and R. B. Peck.
Soil Mechanics in Engineering Practice
, John Wiley
and Sons, Inc., 1967. (Article 68 of Chapter 12 provides a survey of tip types and
recommendations on installation procedure.)
A-2
U. S. Department of the Interior, Bureau of Reclamation.
Earth Manual
, U. S.
Government Printing Office, Washington 1974. (Designations E-27 and E-28 in the
appendix give detailed guidance on piezometer installation in dam foundations.)
A-3
Bishop, A. W., P. R. Vaughan, and G. E. Green (1969), Report on specialty session,
Pore Measurements in the Field and in the Laboratory
, Proc. 7th, Int. Conf. Soil
Mech. and Found. Eng. 3, 427. (A review of recent practice and instrumentation,
related principally to earth structures.)
A-4
Suggested Methods for Determining In-Situ Permeability, Groundwater Pressure
and Flow
, Int. Soc. for Rock Mechanics, Committee on Field Tests (Draft report,
1974 - Final report in course of preparation.)