Vector SRC-C1 Manual

SRC-C1 - Indoor CO2 Transmitter
The SRC-C1 is an indoor CO2 monitoring/transmitter. Three LEDs in the colors
green, orange and red indicate the CO2 concentration of the room air. This shows
the user when to ventilate. The device has one analog output. The CO2
background calibration of the SRC-C1 guarantees for accurate room air
monitoring.
Features
• Indoor CO2 measurement
• Indication with three separate color LEDs
• Minimum and maximum CO2 value memory
• 0...10 V, 0...20 mA or 2...10 V, 4...20 mA measuring output signal
selectable with jumpers
• Levels of CO2 indication programmable
• Automatic CO2 background calibration
• Output signal ranges programmable
• May be used as simple P-controller
Averaging signal adjustable
•
• Optional external display (OPA-S)
Status LED
•
Applications
• Indoor CO2 measurement (home, office, school, restaurant, greenhouse, ...)
• Recording of minimum and maximum CO2 limits for critical environments
• Direct control of extraction fan
CO2 transmitter
The CO2 concentration is measured through non-dispersive infrared (NDIR) waveguide technology with ABC automatic
background calibration algorithm. The applied measuring technology guarantees excellent reliability and long-term
stability. The microprocessor samples the CO2 once per second. It calculates an averaging signal over a preset number of
samples and generates the output signal.
The output signal range and type may be customized by jumpers and if required by a programming module. Standard
signal ranges are 0-10 VDC, 2-10 VDC, 4-20 mA and 0-20 mA. Other ranges can be defined by using the external display
and programming module (OPA-S).
For OPA-S usage see section "Parameter configuration" on page 5.
Automatic baseline calibration (ABC)
The ABC background calibration constantly supervises the measured CO2 concentrations. The calibration function expects
the CO2 values sink to 400 ppm when the room is not occupied. Over a period of several days the controller tries to reach
this value step by step through recalibration of 30ppm per day max. In order to reach the given accuracy, it is required
that the sensor is for at least 3 weeks in operation.
NOTE: The ABC calibration works only in those applications where the CO2 concentration sinks regularly to fresh air
levels of 400 ppm. For special applications such as green houses, animal farms, etc. the ABC calibration should be
de-activated and the sensor should be manually calibrated. The automatic calibration can deactivate through the
external operation terminal. The Sensor can be calibrated by the client and does not need to be sent in for
calibration. For manual calibration see section "Calibration" on page 7.
Minimum and maximum values
Using a display & programming module OPA-S, the user has the option to read out and reset minimum and maximum
CO2 values. The minimum and maximum values may as well be used as output signals. The minimum and maximum
values are automatically saved to the device and are available after a power interruption.
For OPA-S usage see section "Displaying Minimum and maximum values" on page 4.
Doc: 70-00-0220A, V2.7, 20210310
Subject to change without notice
© Vector Controls GmbH, Switzerland
www.vectorcontrols.com
SRC-C1
CO2 T /M
RANSMITTER ONITOR
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