GMI Gasurveyor 11-500, Руководство пользователя

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The gas level is determined using an electrochemical cell,
which like toxic sensors is sensitive to pressure transients.
The oxygen cell has an expected life of two years.
Alarms
The Gasurveyor 11-500, by default, has both audible and
visual alarms off when operating.
The audible alarm is rated up to 85 dB(A). The visual
alarm is a red LED indicator which protrudes from the
instrument top plate, allowing viewing from any angle
above the top plate.
The instrument, by default,will have alarm levels for
Flammable LEL and Oxygen pre-set.
The Gasurveyor 11-500 has the facility to have two (2)
instantaneous alarm levels for the LEL range in the
instrument. These are described as LOW and HIGH,
although generally only the high alarm would be active.
The Oxygen range alarms are described as falling and
rising, and both are active when alarms are selected.
When both instantaneous alarms are set, the
LOW
audible and visual alarm cycle will be activated for 0.5
seconds on and 0.5 seconds off. The HIGH audible and
visual alarm cycle will be activated for 0.25 seconds on
and 0.25 seconds off.
The option is to have the instantaneous alarms activated.
It is the responsibility of the user to ensure that the alarm
levels, where set in the instrument, are appropriate for
the safe operation and legal requirements for the country
/ industry in which the unit is being used.
GENERAL INFORMATION