User's Manual

FIELD EQUIPMENT
NUSEIS
Geophysical Technology Inc Field Equipment Page | 15
• An external battery may be connected to the NRU to charge the internal battery in the field, to
top up the battery for extended recording times.
Figure 6
Geophone Sensor
• The NRU-1C has an internal single geophone sensor embedded in the bottom case.
• The location of the geophone and the design of the case incorporates the EarthGrip technology.
• The normally supplied geophone is a SunFull High Sensitivity PS-10R. Other sensors are
available upon request. Most common industry utilized geophone elements will fit in the NRU
assembly.
• PS-10R specifications: