Alarms
The primary sources of alarms in the Radiacode device are:
- current value of count rate value;
- current value of dose rate value;
- value of accumulated dose.
The Alarm Status is indicated by:
- red LED flashes;
- alarm icons on the status panel of the device display;
- unacknowledged alarms status line.
Two alarm thresholds for the dose rate level can be set using the menu.
When the dose rate alarm threshold level is exceeded, a pulsating sign will be displayed in the status bar:
- Alarm 1 -
- Alarm 2 -
- Alarm 3 (off the scale) -
Two alarm thresholds for the count rate alarm level can be set using the menu.
When the count rate alarm threshold level is exceeded, a pulsating sign will be displayed in the status bar:
- Alarm 1 -
- Alarm 2 -
- Alarm 3 (off the scale) -
Two alarm thresholds for the accumulated dose level can be set using the menu.
When the alarm threshold level is exceeded, a pulsating sign will be displayed in the status bar:
- Alarm 1 -
- Alarm 2 -
- Alarm 3 (off the scale) -
The values of alarm thresholds of the first and second level, separately for each of the sources, are set in the device settings. They can be changed at any time.
The value of the third threshold is the upper limit of the scale of each of the measured values. These thresholds cannot be changed through the menu.
Exceeding any of the thresholds puts the instrument into the Alarm state.
Each Alarm Source defines one of 4 states:
- Normal - value below the first threshold (no alarm);
- Alarm 1 - value higher than the first threshold but not higher than the second;
- Alarm 2 - value higher than the second threshold, but not higher than the third;
- Over scale - value above the third threshold, going beyond the scale.
Exceeding the upper threshold by count rate leads to unreliability of dose rate estimation. In this case the upper threshold for dose rate is also considered to be exceeded.
If any of the alarm thresholds for dose rate, count rate or accumulated dose is exceeded, the corresponding alarm will be activated.
To stop the alarm for any level, you need to confirm it by briefly pressing the round button that you have accepted the alarm. The instrument will continue to display exceeding the set level with a flashing icon of the appropriate type. To terminate an alarm based on the accumulated dose level, you must reset it to zero, or change the corresponding alarm threshold.
If configured, each alarm event will have a corresponding signal:
- vibration signal
- audible alarm
They can be configured in the settings.
The following rules are adopted for indication of states and events of alarms on the display:
- If the swing buttons are locked, the status panel displays the message "Alarms:" and icons of maximum alarm levels reached from the moment the buttons are locked to the current moment of time - one icon for each source.
- By long pressing the round button, the user can confirm viewing of the presented list of maximum alarm levels, after which the swing buttons will be unlocked and the normal instrument status panel will be displayed.
- If Alarm Events occurred while displaying the menu, upon exiting the menu, the display will show the list of maximum alarm levels mentioned above. The swing buttons will then be locked.
- If the swing buttons are unlocked and the display shows one of the measurement display modes, the status bar will show the current alarm level icons for each of the sources, alternating between them.
Updated: Aug 19, 2025