Shallow Posthole Seismometers
Supplied By: IESE, New Zealand
Rs. 0.00
Shallow Posthole Seismometer: Model F72-2.0
Easily installed Seismometer for micro-earthquake monitoring.
The F72-2.0 is IESE’s readily deployed shallow posthole sonde for use in micro-earthquake detection and analysis. The standard model F72- 2.0 is designed for installation in up to 50 m vertical holes with a specialized option for use to 100 m. All three orthogonal components are fixed. The F72-2.0 represents a low cost compromise if the conditions are applicable. An alternate model, the F72-4.5 offers a higher tilt tolerance in exchange for a higher corner frequency.
Features:
-
Fixed geophones
-
Withstands up to 100 °C (frequency changes > 50 °C)
-
Passive sensors
-
For permanent or semi-permanent installations
-
Custom versions can include accelerometers, magnetometers etc.
F72-2.0 Shallow Posthole Seismometer Specifications
| Geophone Parameter | Specifications |
|---|---|
| Sensor Configuration: | Triaxial, Orthogonal |
| Natural Frequency: | 2.0 Hz |
| Operational Temperature: | -45°C to 100°C |
| Geophone Tilt Tolerance: | Ver: ± 7.5°, Hor: ± 0.5° |
| DC Resistance: | 3,810 Ω |
| Sensitivity: | 0.787 V/cm/s |
| Transduction Constant: | 0.0126 √Rc V/cm/s |
| Open Circuit Damping: | 0.61 |
| Moving Mass: | 23 g |
| Max Coil Excursion p-p: | 0.76 cm |
| Housing Parameter | Specifications |
|---|---|
| Operational Pressure: | 0.55 Mpa |
| Outer Diameter: | Ø 72 mm |
| Wall Thickness: | 2.5 mm |
| Height: | 315 mm |
| Weight: | 11 Kg |
| Casing Material | SS 316L |
Shallow Posthole Seismometer: Model F72-4.5
Easily installed Seismometer for high temperature micro-earthquake monitoring.
The F72-4.5 is IESE’s readily deployed shallow posthole sonde for use in micro-earthquake detection and analysis. The standard model F72- 4.5 is designed for installation in up to 50 m vertical holes with a specialized option for use to 100 m. All three orthogonal components are fixed. The F72-4.5 represents a low cost compromise if the conditions are applicable. An alternate model, the F72-2.0 offers a lower corner frequency in exchange for a lower tilt tolerance.
Features:
-
Fixed geophones
-
Withstands up to 150 °C
-
Passive sensors
-
For permanent or semi-permanent installations
-
Custom versions can include accelerometers, magnetometers etc.
F72-4.5 Shallow Posthole Seismometer Specifications
| Geophone Parameter | Specifications |
|---|---|
| Sensor Configuration: | Triaxial, Orthogonal |
| Natural Frequency: | 4.5 Hz |
| Operational Temperature: | -45°C to 150°C |
| Geophone Tilt Tolerance: | Ver: ± 15°, Hor: ± 2° |
| DC Resistance: | 3,810 Ω |
| Sensitivity: | 0.787 V/cm/s |
| Transduction Constant: | 0.0126 √Rc V/cm/s |
| Open Circuit Damping: | 0.27 |
| Moving Mass: | 23 g |
| Max Coil Excursion p-p: | 0.76 cm |
| Housing Parameter | Specifications |
|---|---|
| Operational Pressure: | 0.55 Mpa |
| Outer Diameter: | Ø 72 mm |
| Wall Thickness: | 2.5 mm |
| Height: | 315 mm |
| Weight: | 11 Kg |
| Casing Material | SS 316L |
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