P 1000, 2000, 3000 & 5000 Ex
Ion Science Ltd
Page 16 of 41
Instrument Menu
Alarm (P 1000, 2000, 3000 & 5000)
When in SURVEY mode, upper and lower alarm
levels can be set by the user to indicate particular
levels of detection specific to their needs.
Both alarms give an audible and visible output (flashing LED) but with increased urgency with the upper
alarm. An alarm state indicates that P has detected the user set alarm level which has been
exceeded. The alarm will continue to sound and flash until the user acknowledges the alarm by pressing
ENTER.
Please note that it is the user’s responsibility to respond appropriately to an alarm
condition
.
Upper and lower alarm levels in survey mode are simple to set via the instrument. Use the up and down keys
to select the Alarm graphic in the function menu and press Enter. Then select the alarm you wish to adjust
(Upper or Lower), press enter again then use the up and down keys to change the alarm setting. These
alarms can also be easily adjusted on a PC via the Gas Table in the IonPC software. Please note that for
safety reasons the lower alarm cannot be set above the upper alarm and the upper alarm cannot be set
below the lower alarm.
When in Health and Safety mode, alarms are triggered by STEL and TWA alarm levels pre-programmed
into the instrument‟s gas table. An Alarm in Health & Safety mode indicates the user has been exposed to
levels exceeding those set within the gas table. When P alarms in Health and Safety mode, the
relevant TWA or STEL figure shown on the display will flash. These values cannot be changed either via the
instrument or the IonPC software.
Sound (P 1000, 2000, 3000 & 5000)
Audible outputs can be selected to indicate
functions. When Signal is selected, the rate at
which the instrument BEEPS increases with the detected gas. When Confidence is selected the instrument
BEEPS every few seconds to indicate it is functioning. This feature can be useful if the instrument is out of
sight. When Key is selected the instrument BEEPS when a key on the keypad is pressed. Alarm can only be
adjusted using the IonPC software to avoid the accidental switch off.
Calibration (P 1000, 2000, 3000 & 5000)
'Factory calibration' is set by Ion Science during
instrument manufacture. 'Custom calibration' can be
set by the instrument user.
General description
Due to the linear output of the Ion Science PID detector , P instruments only require a two-point
calibration. The P scales its linear output across a ZERO level (clean air reference) and the SPAN (a
user defined gas concentration).
Factory Calibration
'Factory' calibration offers a safe set of calibration data. This should be used if the custom calibration fails
and will keep the unit working until a good custom calibration is completed.
ION Science recommends an annual service and calibration for users who require a traceable calibration.
During this service the lamp and detector is brought back to factory specifications and new Factory
Calibration data is stored.
Factory Custom
Signal Confidence Key Alarm
