E-Saximeter

Pile Dynamics, Inc. Representative Days

September 27 – 29, 2017

E-Saximeter

• Used to generate a complete Pile Driving Log• Pile Name

• Start and stop driving times

• Blow count vs. depth

• Blows per minute

• Potential Energy and stroke height

• Kinetic Energy

• Beginning and Ending Set

E-Saximeter Options

• E-Saximeter (basic)

• Energy E-Saximeter w/transmitter

• Depth E-Saximeter w/transmitter

Main Control Unt

• 7X6 non-tactile membrane keypad

• Lithium ion battery pack (>8 hrs.)

• USB output

• 4 X 16 character LCD

• Internal microphone 70 – 115 db

• Up to 8Mb internal memory

• English or SI units

• BPM 68 OED / 300 other

• Bluetooth radio w/Energy and Depth

Transmitter

• Bluetooth radio

• 100m range

• Energy E-Sax internal Lithium ion (>8 hrs.)

• Depth E-Sax external crane battery

Basic E-Saximeter

• Electronically detects hammer impact • Sound recognition circuit

• Manual keypad input

• Determines duration between blows Δt

• Converts Δt to stroke (H) of OED

• Converts H to Potential Energy of OED

Basic E-Saximeter Driving Log

Pile Name

Pile Length

Date, start/stop time

Project Name

Owner Name

Hammer Name

Hammer Weight

Hydraulic OED

Stroke and Potential Energy

Kinetic Energy E-Saximeter

• Pair of proximity switches detect ram position

• Ram position and time calculate impact velocity

• Wireless transmitter sends velocity information to the E-Saximeter

• Ram Kinetic Energy calculated asE = 1/2MV²

Kinetic Energy E-Saximeter

• Inductive Switch• Sense ram (metal)

• 30mm and 18mm

• Normally Open or Normally Closed

• 10mm sensing range

• Flush mount

• 5mm metal free zone required

Inductive Proximity Switch

Kinetic Energy field install

Kinetic Energy Driving LogHydraulic OED

Switch spacing and kinetic energy

Stroke vs. BPM

Depth E-Saximeter

• Depth sensor mounted on hammer

• Tracks movement of hammer

• Wireless transmitter sends depth of penetration information to E-Saximeter

• Completely automates generation of Pile Driving Log

• Maximum range 49m

• Resolution .6mm

Depth E-Saximeter

Encoder

Transmitter

Depth E-Sax Driving Log

• Encoder Calibration

• Beginning Set• Encoder counts blows 2 thru

11/encoder cal

• Ending Set• From last 100 blows; encoder

counts blows 86 thru 95/encoder cal

Questions?