![F.W. Bell 4180 Instruction Manual Download Page 9](http://html.mh-extra.com/html/f-w-bell/4180/4180_instruction-manual_535138009.webp)
3-3
Display Layout:
The display legends on the LCD indicate the various operating modes and functions of the 4100 Series meter.
Figure 3-3
XYZ Axis indicator:
The selected axis is indicated on the top left hand corner of the display. When the unit is
powered on, it will return to the last state it was in when last powered down. By pressing the AXIS button, the
meter will switch through all three axes individually, and the sum of all three (XYZ). The physical orientation of
the meter’s measurement axes are shown in figure 3.4.
Figure 3.4 Meter Axis Positions
Low Battery Indicator:
The low battery indicator is activated when the battery voltage falls below approximately
4.44 volts. The indicator is found on the top center section of the display. See figure 3-3.
UNITS:
The units for the field level readings are found on the right-hand side of the display. By pressing the
UNITS key, the meter will toggle between µT or mG. This function is operational while the HOLD or REL
functions are active. See figure 3-3.
MIN / MAX (HOLD): (Model 4190 only)
When the HOLD function is activated with the SHIFT- HOLD key
sequence, MIN will be shown in the bottom left hand side of the LCD. Pressing the SHIFT-HOLD sequence a
second time will display MAX, and a third time will turn the HOLD mode off again. The meter will record the
highest reading when in MAX HOLD mode (or the lowest reading when in the MIN HOLD mode) since the time
HOLD was activated or the reading was RESET. This function can be used in conjunction with RESET. By
pressing the SHIFT- RESET key sequence, the held reading will reset to the present level. See figure 3-3.
REL:
When performing a relative measurement, the REL indicator will become visible on the bottom right-hand
side of the display. See figure 3-3.