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
Mechanical Specifications
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Orientation
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Omni (Vertical and Horizontal also available)
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Moving Mass
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6.6 g (0.23 oz)
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Maximum Coil Excursion p-p
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3.05 mm (0.12 in.)
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Diameter
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2.22 cm (0.875 in.)
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Height
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2.64 cm (1.04 in.)
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Weight
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44 g (1.52 oz)
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Storage Temperature
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–40°C to +100°C (–40 to +212°F)
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Operating Temperature
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–40°C to +200°C (–40 to +392°F)
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ELECTRICAL SPECIFICATIONS @ 25°C
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Frequency
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15 Hz *
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Spurious Frequency
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365 Hz
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Distortion at Vertical
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< 1%
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Coil Resistance
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1850 Ω *
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Open-Circuit Sensitivity
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40.16 V/m/s (1.02 V/i/s)
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Sensitivity at 70% Damping
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27.56 V/m/s (.70 V/i/s)
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Open-Circuit Damping
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47%
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*Other frequences and resistances available.
Resources
