2-6
Initial Setup
used. If the short section of tubing between the filter and the optical bench is
contaminated, the filter and the tubing should be replaced. Instructions for
replacing the air filters are given in Section 12, Maintenance.
Power On
When the LI-8100A is powered on using the ON/OFF button on the indicator panel
inside the Analyzer Control Unit, a series of LEDs will light.
ON/OFF
Automated Soil
CO
2
Flux System
ON/OFF
POWER
IRGA READY
ACTIVE
LOW BATTERY
READY
ON/OFFON/OFF
Figure 2-5. The indicator panel is located on the inside panel of the Analyzer Control Unit.
Power - On when ON/OFF button is pushed, and indicates that power is applied to
the instrument.
Ready - On when the instrument is ready to communicate with a computer or
PDA.
IRGA Ready - On when the IRGA has reached its operating temperature. This may
take about 10 minutes after the instrument is powered on. The instrument will
function before the IRGA Ready light illuminates; however, measurements should
not be made until the optical bench has reached its operating temperature.
Active - On when the LI-8100A is making a measurement.
Low Battery - On when the input voltage drops below a factory-determined
threshold (approximately 10.94 volts). If the voltage drops below 10.5 volts, the
instrument will turn off.