Model 3001 Multi-Detector Survey Meter
User’s Manual
Section 2
Ludlum Measurements, Inc.
Page 2-9 April 2017
MAX Mode Operation
While in MAX mode, the highest detected count rate (since the last reset) is
displayed. The word MAX will be displayed when in MAX mode.
Tapping the UNITS button will switch the displayed value between the
Primary and Secondary Units.
Tapping the ON/ACK button will turn the “click” audio on/off. When
Sigma Audio is enabled, tapping the ON/ACK button will toggle the Sigma
Audio beep on/off.
Under a non-alarm or alarm condition, a long press of the ON/ACK button
will reset the display. When Sigma Audio is enabled, the Sigma Audio alarm
level cannot be reset in Max Mode.
If an alarm condition is present, tapping the ON/ACK button once will
acknowledge and turn off the continuous tone alarm audio. (The “click”
audio will remain as selected under non-alarm conditions.) Tapping the
ON/ACK button a second time will toggle the audio setting. Under an
alarm condition, the ALARM display indicator will remain on until the
display is reset. Alarms in MAX mode latch with the display.
If other operational modes are available, tapping the MODE button will
move to the next available operational mode.
Figure 9: MAX mode operation display with ALARM indicator.
