CIRAS-2 Essentials
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CIRAS-2 Operator's Manual Version 2.04
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CIRAS-2 Essentials
Please observe the following to ensure correct operation of and avoid damage to CIRAS-2:
Before Powering On and Operating the System
Charge all 12V NiMH batteries prior to making measurements.
Charge each 12V NiMH battery independently using the chargers supplied by PP Systems.
Use only the power supply supplied by PP Systems for powering the CIRAS-2 externally.
Ensure that the probe (i.e. leaf cuvette) electrical connector is properly connected to CIRAS-2
before switching on power.
Be sure that the reference and analysis gas fittings are correctly connected to the proper gas
ports.
Check that the chemicals contained in the absorber columns are fresh.
Check that i) all absorber columns and ii) the water vapour equilibrator are properly seated in their
correct manifold positions.
Check for
pinched or rolled “O” rings in the top and bottom caps of the absorber columns.
Close the leaf cuvette to allow successful LED tuning.
Always operate CIRAS-2 in a vertical position.
Important Precautions
Do not use substitute battery chargers or power supplies with CIRAS-2.
Avoid allowing water into any CIRAS-2 gas inlets or the leaf chamber. Do not use on wet foliage
or attempt to humidify the gas stream by direct artificial introduction of humidified air.
If there is any risk of water entering or condensing inside CIRAS-2, water dropout traps must be
fitted.
External filtration may be required in extremely dirty/dusty atmospheres.
Do not attempt to change the CO
2
cartridge until at least 24 hours have elapsed since inserting
the cartridge in the CO
2
regulator assembly.
To prevent voltage spikes and software conflicts avoid attaching/detaching probe (i.e. leaf cuvette)
electrical connections while CIRAS-2 is powered on.
Avoid powering off CIRAS-2 before completely exiting the RCS program.
!!! WARNING !!!
USE ONLY POWER SUPPLIES AND BATTERY CHARGERS SUPPLIED BY
PP SYSTEMS FOR THE CIRAS-2.
USE OF ANY OTHERS WILL INVALIDATE THE WARRANTY.
