Nor-Lake Large Capacity CO2 Incubator - Manual (Page 4)

Figure A
CO
2
Operation
The Large Capacity Incubator is offered with a CO
2
dispensing and measurement system. The CO
2
system is microprocessor based and controlled by a sensor based on the NDIR Single-Beam Dual-
Wavelength principle. The sensor (included with CO
2
option) measures from 0-20% CO
2
density
and provides a reliable and stable reference measurement over time. Water vapor, dust, debris and
most chemicals do not affect measurement accuracy; therefore, the sensor may be used in a harsh
and humid environment.
The CO
2
settings are controlled by the controller located on the façade of the unit. Please see the
default and adjustable settings in the separate instructions, part number 136349.
Installation Requirements – The end user must supply two CO
2
tanks and two-two stage gas
regulators for the CO
2
input. See Figure B for hook up points. The input gas pressure must be
above 4 psi as the CO
2
tank switch over valve is factory set to recognize an empty tank when the
pressure drops to 4 psi. The maximum recommended input pressure should not exceed 25
psi.
Connecting a CO
2
Supply
High concentrations of carbon dioxide can cause
asphyxiation. The use of CO
2
monitors and alarms
is recommended for areas where CO
2
can collect.
!
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