INSTRUCTIONS IN ENGLISH
|
DIGITAL SOIL COMPACTION METER
03
INSTRUCTIONS IN ENGLISH
|
DIGITAL SOIL COMPACTION METER
04
SpotOn® Digital Soil Compaction Meter Item #29360
SpotOn® Digital Soil Compaction Meter Item #29360
Maximum Reading Display
The maximum compaction reading attained during the penetration will automatically display
as the probe is withdrawn from the soil. The display will show “-HI-“ followed by the maximum
compaction reading. This reading will show for a few seconds before the meter reverts back to its
normal operation mode.
Over Force
If excessive force is applied to the meter the display will flash “9999” until the force is reduced
below the meter’s upper limit.
Note
Meter will automatically shut off after 15 minutes of non-use if not turned off by the user to
conserve battery power.
Taking a Reading
Power on the meter by pressing the
POWER
button. Zero
the meter if necessary with the
ZERO
button. Slowly press
the meter into the soil with a firm and steady pressure. Do
not stop or reverse force on the meter until the desired
depth has been reached. Keeping the meter vertical during
the entire penetration sequence assures readings are true
cone pressures and not a result of side loading on the shaft.
Penetration Rate
ASABE Engineering Practice EP542 recommends a
Penetration Rate of
1.2 in./second (30mm/sec)
for best
accuracy.
GENERAL OPERATION:
Installing the Batteries
Zero Calibration
Changing Display Units
Remove the metal end cap on the meter’s handle with a straight screw driver. Install two (2)
new alkaline AA or LR6 size batteries with the plus (+) side of both batteries facing into the tube.
Replace the metal end cap with the spring contacting the negative (-) of the last battery. When it
is time to replace the batteries a low battery symbol ( ) will show on the unit’s display.
With the meter powered on, hold the meter above the ground with the shaft facing down. Press
the ZERO ( ) button and continue holding the meter steady and above the ground until the zero
function completes and the LCD displays a “0” value.
The compaction meter should show a zero value when suspended in air prior to taking a probing
with the meter. Temperature changes, battery voltage changes, and rough handling can cause
shifts in the meter’s zero point. All the above variations are easily and quickly accounted for when
the zero function is complete.
Note: When the meter tip is placed on the ground the display may show a value of 5-8 PSI (34 kPa)
but will show 0 PSI/kPa when suspended about the ground. This is correct and due to the weight
of the meter’s head applying force to the shaft.
Pressing both buttons (
POWER & ZERO
) at the same time while the meter is on will change the
displayed units. This change will be saved when the meter is turned off.