MARK L-4C-3D
The MARK L-4C-3D, made by MARK PRODUCTS, is a 3-component geophone. Adaptor cables are available for EarthData recorders.
The connector has been replaced by a self-cleaning type. The wiring also has been changed: Resistors are added internally to obtain a damping of 0.7, and for a standardized calibration of each single component.
Pool Contents
| Seismometer | 170 Units: 3 components, 1 Hz, 5500 Ohms coil resistance |
Mechanical Parameters
| Sensor | 3 orthogonal geophones |
Signal Output
| Sensitivity | 180 Vs/m (due to built-in damping) |
| Response | Ground velocity from 1 Hz to >100 Hz |
| Damping | set to 0.7 by built-in resistor |
Physical Parameter
| Power Consumption | 0.8 Watts to 1.2 Watts (@ 3*100 sps) |
| Weight | 13 kg (incl. adjusting plate) |
| Operating Temperatures | -20 to + 60 °C |