ACD Cal 2000 Manual de instruções - Página 7
Procurar online ou descarregar pdf Manual de instruções para Instrumentos de medição ACD Cal 2000. ACD Cal 2000 13 páginas. Gas generator release vi
Imprimir páginaDelivery Hose
The instrument comes standard with a three (3) foot long,
¼
inch diameter norprene hose for delivering the gas to the
sensor or calibration adapter.
connect adapter for easy attachment to the instrument.
Mass Flow Sensor
The Cal 2000 has a built-in mass flow sensor that measures
the flow rate of the instrument. This information is used in two
ways. With the pump engaged, it is used to control the pump
to the desired flow rate over a range of 0.2 to 1.0 LPM. With
the pump disabled, it is used to measure the air flow rate drawn
through the Cal 2000 by an external pump. This information
is used to adjust the cell current to the desired ppm. The flow
meter should be calibrated against a primary mass flow stan-
dard every 12 to 24 months.
Internal Charcoal Filter
An internal charcoal filter is provided to scrub contaminated
air and provide a clean baseline for "zeroing" sensors. This
filter should be replaced on a yearly basis and is removed
by pulling out the grey plunger at the top of the unit. Spare
filter elements can be purchased through ACD. Note: The
charcoal filter must be fully installed into the instrument for
correct operation.
The hose has a male quick
Page 5
"Cell Failure!"
accompanied by an audible beep.
There are two possible causes for a cell failure. One
cause is that the instrument has not detected a cell. The
other is that a high voltage has been detected across the
cell.
If the cell is not initially detected by the processor, the unit
will display cell failure and immediatly shut down (without
entering 'purge mode'). This failure can happen either
because a cell is not inserted, connection to the cell is not
made, or due to a failure of the circuit board on the generat-
ing cell.
The cell failure alarm will also engage if the microproces-
sor detects an abnormally high cell voltage condition. One
possibility for this high voltage is that one of the pins may
be making a faulty electrical connection. Another possibility
is that the electrolyte level is too low. For instructions on
how to replenish the electrolyte refer to
Section V: Maintenance.
If this message continues after the cell has been plugged
in correctly and the electrolyte level has been confirmed to
be sufficient, contact the factory and/or replace the cell.
"Cell is used up! "
accompanied by an audible beep.
The cell life has expired and the display will show 0% cell
life remaining. Replace the cell.
"Battery is low!"
accompanied by an audible beep.
If battery power drops below 5% capacity, the screen will
flash "Battery is low!". Replace the batteries or switch to AC
power.
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