E-Sax is a handheld instrument registering relevant pile driving parameters, calculating diesel hammer stroke or hammer blows per minute (BPM), for an accurate pile driving log.

• Counts hammer blows, and equivalent blows per minute for all hammer types; calculates stroke height for diesel hammers
• Provides a drive log of blow count as a function of depth
• Results are downloaded from the E-SAX to your computer
• Optional accessories allow for impact velocity measurements to compute kinetic energy and depth measurements

The E-Saximeter registers all relevant pile driving parameters. It calculates the hammer operating rate in blows per minute and helps the piling inspector create a pile driving log. For single acting, open-end diesel hammers the E-Sax also displays the hammer potential energy and ram stroke. This measurement is important since excessive stroke can cause pile damage.

Depth Measurement Reel The E-Sax is a handheld instrument. In its basic configuration, the pile inspector observes the driving process and pushes a button for every depth increment as driving progresses. Several accessories further enhance the functionality of this time-tested sound recognition device including:

Proximity switches installed on the driving hammer and a wireless transmission system (transmitter attached to the driving hammer and E-Sax internal transceiver) enable the E-Saximeter to compute the hammer kinetic energy. Kinetic energy may be input to the GRLWEAP pile driving simulation software to fine-tune the driving criteria. A depth measurement reel with wireless transmission capabilities eliminates the need for manual depth increment input, automating the entire creation of the driving log.

• COUNTS HAMMER BLOWS, AND EQUIVALENT BLOWS PER MINUTE
• RESULTS ARE DOWNLOADED FROM THE E-SAX TO YOUR COMPUTER
• OPTIONAL ACCESSORIES ALLOW FOR IMPACT VELOCITY MEASUREMENTS TO COMPUTE KINETIC ENERGY AND DEPTH MEASUREMENTS
• PROVIDES A DRIVE LOG OF BLOW COUNT AS A FUNCTION OF DEPTH
• PRE-PROGRAMMED AND USER PROGRAMMABLE HAMMERS
• ENTIRELY WIRELESS

SPECIFICATION

MAIN UNIT

• Size : 100mm X 190mm X 50mm
• Weight : 0.54kg
• Temperature range : 10 to 40°C operating -10 to 65°C storage
• Power : Built-in rechargeable battery with 16 hour minimum duration
• Display : LCD, 4 lines X 16 characters, viewing area 62mm X 26mm
• Keypad: Large Key (1.27mm²), non tactile

ELECTRONIC

• 32 bit CICS Micro CPU up to 50MHz
• 10 bit 2 channel analog to digital converter; 8 bit 2 channel digital to analog converter
• Internal microphone 70 to 115 dB
• Standard Type A USB drive for data transfer
• 8 MB internal Magnetoresitive RAM

FUNCTIONAL AND OTHER

• Maximum blow detection rate: 68 bpm for open end diesel hammers; 300 bpm for all others
• Operates in English or SI units
• Full one year warranty
• Technical manual included

OPTIONAL DEPTH MEASUREMENT UNIT

• Installation : mounts on crane, cable attaches to hammer
• Size : 305mm X910mm X 910mm
• Weight : 73kg
• Resolution : 0.6mm Max range : 49m

Optional Energy Switches (pair of proximity switches, available in 3 types)

Installation : mounts on hammer

Transmitters