Thermo EPD Mk2, Technical Handbook

Page: 45 / 115

EPD/HB/40521/000
ISSUE 5
EPD TECHNICAL HANDBOOK Page 35
There are two Hp(10) alarm thresholds and a single Hp(0.07) alarm threshold that
can be displayed and modified. The 2
nd
Hp(10) dose alarm has the higher priority
and should always be set to a higher value than the 1
st
Hp(10) alarm. The
accumulated dose alarm thresholds can be set using the button as follows:
1
st
& 2
nd
Hp(10), Hp(0.07): 10
µ
Sv, 50
µ
Sv, 100
µ
Sv, 500
µ
Sv, 1mSv, 5mSv,
10mSv, 50mSv, 100mSv, 500mSv, 1.0Sv.
Example of 1
st
Hp(10) Dose alarm
threshold display set at a default
value of 500
µ
Sv:
Other values for the dose alarm thresholds may be set via the IR communications
link.
Changing The Dose Alarm Thresholds
To change the 1
st
Hp(10) dose
alarm threshold select the display
above and double-press the button.
The display will change to the
following with the digits flashing:
Alarm Set Limits: 10
µ
Sv to 1Sv.
Pressing the button will increase the alarm threshold in the following steps: 10
µ
Sv,
50
µ
Sv, 100
µ
Sv, 500
µ
Sv, 1mSv, 5mSv, 10mSv, 50mSv, 100mSv, 500mSv, 1.0Sv.
When the required threshold is reached double-press the button to confirm the value
and the flashing display will stop.
If you start to change the threshold and change your mind this option can be aborted,
as follows:
Short-press the button until the
following is displayed (letters
flashing). Double -press the button to
confirm that you wish to escape and
return to the previous alarm
threshold.
If the “ESC” screen is displayed and the button is not pressed, after default time-out
the display will return to the dose alarm threshold that was being set-up. Again, if the
button is not pressed, the display will return to the default screen after a further time-
out period.