Data output capabilities, Operation (continued), Utput – Shellab SCO31 User Manual
Page 33: Apabilities
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OPERATION (CONTINUED)
D
ATA
O
UTPUT
C
APABILITIES
The SCO Incubators generate data outputs describing temperature and CO
2
percentage levels
using a 4 through 20 milliamp bus analog output module. These outputs can be connected to a
building management system (BMS) or other data monitoring and capture system through the use
of three jacks or a USB-style port.
A hardware driver and data logging software package for the USB-style port can be downloaded
from the Shel Lab website. To download the software, visit the product page of any Shel Lab CO
2
incubator and click on the large USB bar icon located near the bottom of the page
.
The jack ports accept standard audio jacks available from most electronics retailers. These are also
known as ¼ inch 2-pole audio connectors or phono jacks. Jacks are not included with incubator.
Alarm activation instances are communicated directly from the main controller board through a
third jack port. An output is sent from the alarm port for all alarm activations.
Data Monitoring Systems
– Max Resistance
For building management and other data monitoring or logging systems the maximum resistance of
the current loop driven by either output from the 4-20mA module is 250 Ohms. At higher loop
resistances the current value will be erroneously low for parameter values near the top of the scale.
Output Channel
Parameter
Parameter Value at 4mA
Parameter Value at 20mA
1
Temperature
0°C
60°C
2
CO
2
0% CO
2
20% CO
2
Data Jacks and Port on the Back of the
SCO58
Data Jacks and Port on the Top Right
Side of the SCO40 and SCO31