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Texcel’s ETM instruments deliver unmatched versatility for vibration and blast monitoring in one rugged, precision-engineered, self-contained device.
At Texcel, our specialist team are passionate about delivering a product that continues to stay at the forefront of innovation and design. The ETM has superior performance specifications and varying self-contained housing designs to suit your project’s needs.
Features include:
Sensors
Input ranges can be configured by the user in T-Link.
The Low Frequency Geophone (2 Hz) has a maximum range of ±55.6 mm/s.
The high-frequency roll-off of the sensors (unless otherwise specified) is at 30% of the sampling rate. The roll-off frequencies shown below are for the standard 1000 Hz sample rate.
Geophone – 4.5 Hz High Range
| Range | Up to ±111 mm/s (±4.37 in/s) |
| Resolution | 0.054 mm/s (0.0021 in/s) |
| Accuracy | ±5% @ 31.5 Hz |
| Bandwidth | 4.5 Hz to 300 Hz (-3 dB) |
| Threshold | Up to 111 mm/s (4.37 in/s) in steps of 0.054 mm/s (0.0021 in/s) |
Geophone – 4.5 Hz High-Mid Range
| Range | Up to ±55.6 mm/s (±2.19 in/s) |
| Resolution | 0.027 mm/s (0.0011 in/s) |
| Accuracy | ±5% @ 31.5 Hz |
| Bandwidth | 4.5 Hz to 300 Hz (-3 dB) |
| Threshold | Up to 55.6 mm/s (2.19 in/s) in steps of 0.027 mm/s (0.0011 in/s) |
Geophone – 4.5 Hz Mid Range
| Range | Up to ±27.8 mm/s (±1.09 in/s) |
| Resolution | 0.014 mm/s (0.00055 in/s) |
| Accuracy | ±5% @ 31.5 Hz |
| Bandwidth | 4.5 Hz to 300 Hz (-3 dB) |
| Threshold | Up to 27.8 mm/s (1.09 in/s) in steps of 0.014 mm/s (0.00055 in/s) |
Geophone – 4.5 Hz Low-Mid Range
| Range | Up to ±13.9 mm/s (±0.55 in/s) |
| Resolution | 0.0068 mm/s (0.00027 in/s) |
| Accuracy | ±5% @ 31.5 Hz |
| Bandwidth | 4.5 Hz to 300 Hz (-3 dB) |
| Threshold | Up to 13.9 mm/s (0.55 in/s) in steps of 0.0068 mm/s (0.00027 in/s) |
Microphone
| Range | 75 dBL to 138 dBL (±160 Pa) |
| Resolution | 0.12 Pa |
| Accuracy | ±5% @ 80 Hz |
| Bandwidth | 2.0 Hz to 300 Hz (-3 dB)
May be operated in “Peak Detect” mode, which meets the “Linear Peak Hold” or the “P” time-weighting characteristic as specified in AS1259.2 – 1990 |
| Threshold | Up to 138 dBL (160 Pa) in steps of 0.12 Pa |
Geophone – optional 2 Hz
| Range | N/A High Range
Up to ±55.6 mm/s (±2.19 in/s) Up to ±27.8 mm/s (±1.09 in/s) Up to ±13.9 mm/s (±0.55 in/s) |
| Resolution | Same as 4.5 Hz geophone |
| Accuracy | Same as 4.5 Hz geophone |
| Bandwidth | 2.0 Hz to 300 Hz (-3 dB) |
| Threshold | Same as 4.5 Hz geophone |
Triaxial Accelerometer
| Range | Up to ±30 m/s² (~ ±3 g)
Up to ±15 m/s² (~ ±1.5 g) Up to ±7.5 m/s² (~ ±0.75 g) Up to ±3.75 m/s² (~ ±0.375 g) |
| Resolution | 0.0146 m/s² (0.00149 g) High Range |
| Accuracy | ±5% @ 31.5 Hz |
| Bandwidth | 0.4 Hz to 300 Hz (-3 dB)
0.4 Hz to 100 Hz (-3 dB) VDV Mode |
| Threshold | Up to 30 m/s² (~ 3 g) in steps of 0.0146 m/s² (0.00149 g) High Range |
Cables
The maximum supported cable length for geophones, triaxial accelerometers and other active sensors is 100 m.
The maximum supported cable length for the microphone is 10 m.
Waveforms
| Record modes | Single shot (Threshold, Auto), continuous logging |
| Sample rates | From 20 to 25 000 samples per second (sps) depending on settings |
| Record time | 128 to 131 072 points (0.128 to 131.072 seconds at 1000 sps) |
| Pre-trigger | 0% – 90 % in 10 % steps |
| Memory | 627 × 4 s waveforms at 1 000 samples per second, with 5 213 summaries
65 535 summaries with no waveforms |
User Interface
| Display | LCD 20 characters × 2 lines, with backlight |
| Keypad | 6 buttons + power button |
| Connectors – top panel | Mini USB for PC communications |
| Connectors – sensors | MS12-10 for triaxial geophone
MS10-7 for microphone or other sensor |
| Connectors – other | MX-3 for Mains Charger, Solar Panel or External Battery
MX-4 for Alarm and Button BNC for Antenna |
| Connectors – power | IEC320-C8 on international mains charger |
| Options | Wireless Modem
Alarm Light External Battery Solar Panel Weatherproof Mains Charger |
Power Supply
| Batteries | Internal rechargeable NiMH 13 A·h @ 9.6 V
Up to 720 hours continuous run time (depending on Settings) |
| Charger | International voltage (90 V to 260 V, 50 Hz to 60 Hz)
IEC320-C8 cable |
| Recharge Time | Approx. 6 hours |
Physical
| Temperature | Operating 0°C to 70°C (32°F to 158°F)
Display 0°C to 50°C (32°F to 122°F) |
| Dimensions | 490 mm × 430 mm × 230 mm |
| Weight | 8.8 kg |
| Environmental | Sealed to IP65 when geophone and microphone connected, or caps in place |
Additional Notes
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