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V.
Troubleshooting
No Power To Instrument
There are two common causes for the unit to not power
up when the POWER switch is pressed for three sec-
onds.
The most common is that the batteries are dead. Try
replacing the batteries with new alkaline batteries or try
powering the unit from the AC power adapater.
The second most frequent cause for no power to the
instrument is a blown protective fuse. This fuse can be
shorted out if the batteries have been removed from
the instrument with a metallic object such as a
screwdriver. If the protective fuse has been blown
contact the factory.
"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.
"Flow too low" / "Flow too high"
audible beep.
Accurate air flow is critical to an accurate gas mixture.
The microprocessor and built-in precision mass flow
sensor continuously monitor the air flow. If, however, a
flow problem develops (e.g. air blockage or kinked
tubing) which cannot be corrected within ten seconds,
the unit will display "Flow too low." If the problem cannot
be cleared after an additional minute, the instrument will
enter the purge mode and then power down.
Page 13
accompanied by an
Optional items available for the Cal 2000 LT include:
AC Adapter
The Cal 2000 LT may also be operated from an AC adapter.
The AC adapter converts the AC voltage supplied from the
main power lines to 6 VDC which is used in lieu of the bat-
teries. The adapter plugs into the instrument from the un-
derside of the case directly into the power board and is in-
dependent of polarity.
If needed, contact the factory for
exact specifications of the AC adapter.
Hard Body Instrument Case
A water resistant, padded instrument case is available for
storage and shipping of the Cal 2000 LT. The case is
made out of rugged, high impact resistant plastic and will
help protect the instrument in harsh environments. The
foam insert may be customized to hold additional items
like spare batteries and cells.
Extension Hoses
Longer sample hoses may be purchased for use with the
Cal 2000 LT in lengths up to 20 feet. Note: the internal
pump may not be capable of overcomming flow restricions
associated with extreme hose lengths when operating at
1.0 LPM.
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