Parts

Dimension

Probe diameter

106 mm

Probe length

900 mm

Probe weight

27 kg

Specific gravity of probe

3.5

Number of component

4

Sensitivity

4 × 10−9/mV

Noise

0.03 mV

Linearity

Approximately equal to 1%

Bandwidth

100 Hz

Self stability

10−7/year

Inconsistency of sensitivity coefficient of the four elements

less than 1%

Calibration range

7 × 10−8

(Non-zero) adjustment range

±10−5

Mechanical zero amplitude

1 × 10−3

Underground instrument power

0.2 w