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Shallow Posthole Seismometers

Shallow Posthole Seismometers

Product Details : 

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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Shallow Posthole Seismometers

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Seller information

  • Toshniwal Technologies Pvt. Ltd.

  • Toshniwal Technologies Pvt. Ltd.
  • New Delhi, India
  • Business Type :Supplier
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Tags: Seismometers