Enquiry:hkmarketing@epc.com.hk 
Handheld instrument registering relevant pile driving parameters, calculating diesel hammer stroke or hammer blows per minute (BPM), for an accurate pile driving log.
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.
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:
- 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.
- 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.
Technical 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 Magnetoresistive RAM
Functional and Other
- Maximum blow detection rate: 68 bpm for open end diesel hammers; 300 bpm for all others
- Operating units: English or SI
- Full one-year warranty
- Technical manual provided in PDF form on a USB drive
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
- Size (diameter x length)18mm x 50mm30mm x 50mm30mm x 30mm
| Functionality | Normally Open | Normally Open | Normally closed (for special applications) |
|---|---|---|---|
| Weight | 114 g | 205 g | 182 g |
| Switching Frequency | 200 Hz | 650 Hz | 200 Hz |
| Sensing Range | 10 mm | 10 mm | 15 mm |
| Repeatability | .01 mm | .01 mm | .01 mm |
Transmitters
For Optional Energy SwitchesFor Optional Depth Measurement UnitInstallationmounts on hammermounts on depth sensor
| Size | 90mm X 125mm X 32mm | 64mm X 98mm X 34mm |
|---|---|---|
| Weight | .54kg | .46kg |
| Data Transmission | via a standard radio protocol | via a standard radio protocol |
| Frequency Range | 2.402 ~ 2.480 GHz | 2.402 ~ 2.480 GHz |
| Max Range | 100m | 100m |
| Electronic | Low power 16-bit processor with 12-bit analog to digital converter and 12-bit digital analog converter | Low power 16-bit processor with 12-bit analog to digital converter and 12-bit digital analog converter |
| Power | Built-in rechargeable battery w/ 8-hour min. duration | Suplied by +12V to +24V crane battery |
| Temperature Range | 0 to 40°C operating; -10 to 65°C storage |
0 to 40°C operating; -10 to 65°C storage |
