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12 MultiRAE Pro Normal & Gamma Operation
MultiRAE Pro monitors equipped with a gamma radiation sensor in addition to one or more sensors for
detecting chemical threats can operate in two different measurement modes:
Normal mode
, in which the instrument monitors for both chemical threats and radiation
simultaneously
Radiation-only mode
, in which the instrument continuously monitors for gamma radiation and
does not monitor for chemical threats
The specifics of each operating mode are described in the following sections.
12.1 Normal Mode For Simultaneous Radiation & Gaseous Threat
Measurements
Normal mode is the default mode of MultiRAE Pro’s operation. It is only available on MultiRAE Pro
monitors equipped with a gamma radiation sensor, provided the gamma sensor is enabled. The minimum
instrument firmware requirements for the gamma sensor are:
Application firmware:
v.1.16 or higher
Sensor firmware:
v.1.06 or higher
When the monitor is turned on, it boots up in normal mode to monitor for both gamma radiation and
gaseous threats. Measurements are done continuously.
12.2 Gamma Radiation-Only Measurement Mode
When the instrument is in gamma-only mode, gas sensors are not shown on the display and gas
measurements are not taken. The pump remains off and gamma radiation is measured all the time.
WARNING
Toxic and combustible gases cannot be detected by the MultiRAE when it is operated in gamma-
only mode.
12.2.1 Activating Gamma-Only Measurement Mode
To activate gamma-only measurement mode:
1.
Press [N/-] when the instrument is running in normal (multi-threat) mode: