KAL 84 Instruction Manual
KAL 84 Instruction Manual
8
2.2.9 Time constants
Pressing this key toggles between three different time constants (response times) for
the KAL 84 pressure sensor. A red LED indicates the time constant selected. The
default time constant (20 ms) is used if no LED appears.
2.2.10 Pressure transducer dial
Turning the dial generates pressure—left for negative pressure, right for positive
pressure. The pressure transducer must be brought to its middle position before
generating negative pressure. This is done by turning the dial to the right several
times with the pressure ports open.
Never force the dial!
3
Start-up
Before plugging in the power adapter, make sure the correct supply voltage is
available. The rechargeable battery (included) will charge up when the instrument is
run from the power adapter, even if the KAL 84 is not turned on. Because the battery
may or may not be fully charged upon delivery, we recommend charging the battery
before start-up. The KAL 84 will only run on battery power if the power adapter is
unplugged.
If the battery has reached the end of its lifecycle and is no longer usable, it
must be replaced with a 9 V, IEC 6F22 rechargeable battery.
The power adapter should never be connected if non-rechargeable batteries
have been installed, as this could destroy the instrument.
Only use the included power adapter! For replacement please contact the
manufacturer.
Pressing the “0/1” switch places the instrument in operating mode. Please remember
that it takes roughly 30 minutes for the pressure sensor to warm up. During this
period, the zero point can fluctuate, particularly if the instrument is subject to changes
in temperature. The automatic zero-point calibration feature should be activated
numerous times during this period.
