Reliable Controls SMART-Space Controller User Manual

BACNET NETWORK APPLICATIONS
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 2012-2015 Reliable Controls Corporation
OPTIONAL CARBON DIOXIDE SENSOR (-CO2)
SMART-Space Controller models with the -CO2 option include a 0-2000 ppm
non-dispersive infrared CO2 sensor internally wired to Input 7. The sensor uses an
auto-calibration algorithm that will maintain an accuracy of +/- 50 ppm over time.
FIGURE 25: SSC WITH -CO2 OPTION
CALIBRATION OVERVIEW
The CO2 sensor is factory calibrated, however some calibration drift during shipping and
installation is typical. Twenty-four hours after initial installation and power application, the
automatic calibration algorithm will run, as described below. If this does not provide
enough immediate accuracy, then a manual calibration can be performed to increase the
accuracy right away. Whether or not the manual calibration is performed, the automatic
calibration will gradually calibrate the sensor over time.
A
UTOMATIC CALIBRATION
Automatic calibration occurs once in the first 24 hours after a power cycle, and then recurs
every two weeks thereafter. The lowest CO2 value recorded during the cycle is compared
to 400 ppm, then the sensor is calibrated by the one half of difference of the two values.

Reliable Controls SMART-Space Controller Specifications

General

Brand	Reliable Controls
Model	SMART-Space Controller
Category	Controller
Language	English