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SENSORS

SMC-1850

SMC-1850

PRODUCT DETAILS

The SMC-1850 High-Temperature Geophone has been tested at 200ºC for more than 300 hours with no loss in performance specifications. Its design structure and super-strength magnetic field make the output of this small geophone equal to or greater than the output of larger vibration monitoring units. Its rotating dual-coil construction withstands severe shocks and rough handling. The patented PCB header provides easy and reliable electrical connections.

FEATURES

  • All units tested at 200ºC
  • Ideal for VSP, triaxial, and gimbal downhole operations
  • Full one-year warranty
  • Small size, high output
  • Patented PCB header
  • 100 percent burn-in of basic units
SMC 1850@2x

MECHANICAL SPECIFICATIONS

Orientation Omni (Vertical and Horizontal also available)
Moving Mass 6.6 g (0.23 oz)
Maximum Coil Excursion p-p 3.05 mm (0.12 in.)
Diameter 2.22 cm (0.875 in.)
Height 2.64 cm (1.04 in.)
Weight 44 g (1.52 oz)
Storage Temperature –40°C to +100°C (–40 to +212°F)
Operating Temperature –40°C to +200°C (–40 to +392°F)

ELECTRICAL SPECIFICATIONS 25°C

Frequency 15 Hz *
Spurious Frequency 365 Hz
Distortion at Vertical < 1%
Coil Resistance 1850 Ω *
Open-Circuit Sensitivity 40.16 V/m/s (1.02 V/i/s)
Sensitivity at 70% Damping 27.56 V/m/s (.70 V/i/s)
Open-Circuit Damping 47%

* Other frequencies available.

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