Users Manual

FIELD EQUIPMENT
NUSEIS
Geophysical Technology Inc Field Equipment Page | 13
NRU-1C Description
Physical
• The case of the NRU-1C consists of 4 parts.
o Bottom Assembly – a tapered high strength tube that encases the NRU clamshell
assembly, battery, and geophone element. The shape and design enhance the NuSeis
EarthGrip technology. The N Series bottom assembly is shorter and slightly broader in
comparison to the M series bottom assembly
▪ The joint between the Bottom and Cap Assemblies is solidly sealed by 2 O-rings.
• Face Seal O-ring
• Radial Seal O-ring
o Cap Assembly – high strength clear plastic allows for full view of the high visibility LEDs
in the NRU. The USB model incorporates 4 stainless steel MIMs, 2 for battery charging
or connection of an external battery, and 2 for USB data. The optional TransferJet model
incorporates 2 stainless steel MIMs for battery charging or connection of an external
battery.
o Bottom Clamp – the M Series utilized a stainless steel threaded ring used to secure the
bottom assembly, the N Series has an aluminum bottom clamp
o Top Clamp – the M Series has a stainless steel M60 hex nut used to secure the top
assembly, the N Series has an aluminum or hardened plastic ring nut.
Figure 3
Power
• Internal battery
Top Clamp
Cap Assembly
Bottom
Assembly
Bottom
Clamp
Geophone
Battery