Vector SRC-C1T1 Operational manual

SRC-C1T1
PRODUCT DATA SHEET
Doc: 70-00-0794, V2, 20200311 © Vector Controls GmbH, Switzerland Page 1
Subjects to alteration www.vectorcontrols.com
SRC-C1T1 Indoor CO2+Temperature
transmitter
Features
•Indoor CO2 and temperature measurement
•CO2 –level indication with three colours led
•Minimum and maximum value memory
•0…10 V or 2…10 V measuring signals selectable with jumper
•Optional alternative signal ranges programmable
•May be used as simple P-controller
•Selectable averaging signal
•Optional external display (OPA-S)
•Status LED
Applications
•Indoor CO2 measurement
•Indoor temperature measurement
•Recording of minimum and maximum 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 seconds and generates the output signal.
The output signal range and type may be customized by jumpers and if required by a programming tool. Standard
signal ranges are 0-10 VDC and 2-10 VDC. These ranges can be set by jumpers. Other ranges can be set by using the
external display and programming module. (OPA-S)
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. See last page for
details.
Temperature transmitter
The transmitter measures the temperature by the use of a precision sensing element. The microprocessor samples the
temperature once per second. It calculates an averaging signal over a preset number of seconds and generates an
output signal based on lower and upper signal range values. Standard range is -40…60°C (-40…140°F) and 10 seconds
average. The measuring range and the averaging samples may be customized with the programming tool.
Standard output signal range and types may be selected by jumpers. Standard signal ranges are: 0…10 VDC and 2…10
VDC. Other ranges can be defined by using a programming tool (OPA-S).
Minimum and maximum values
Using a display & programming accessory, the user has the option to read out and reset minimum and maximum values.
The minimum and maximum values may as well be used as output signals. The minimum and maximum values are
saved into the EEPROM and are available after a power interruption. The display of minimum maximum values for the
CO2 sensor is limited to 2550. They may only be shown and memorized in steps of 10 ppm. This limitation does not
apply for the current measurement of the CO2 value.
Indication of CO2 concentration:
A three colour LED is used to indicate levels of CO2-concentration: Green light for low CO2 concentration, orange light
for medium and red light for high concentration. The levels for low-medium-high may be programmed.
Default settings are 0 ppm< low < 800 ppm< medium < 1500 ppm < high.
The LED lights up for 0.5 seconds in a 5 second interval. The indication light may be disabled through parameter IP05.

SRC-C1T1
PRODUCT DATA SHEET
Doc: 70-00-0794, V2, 20200311 © Vector Controls GmbH, Switzerland Page 2
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Ordering
Item Name
Item code
Description/Option
SRC-C1T1
40-300198
CO2 transmitter
SRC-C1T1-W0
40-300198-0
0
Signal range: -40…60°C (-40…140°F) (Default)
SRC-C1T1-W1
40-300198-1
1
Signal range: -35...35°C (-31…95°F)
SRC-C1T1-W2
40-300198-2
2
Signal range: 0…50°C (32…122°F)
Accessories
Item name
Item code
Description/Option
OPA-S
40-500006
External display module square housing
Note: For the correct display of values V1.7 and later is required.
OPU-S
40-500030
External display module rectangular housing
Note: For the correct display of values V1.7 and later is required.
Technical Specifications
Important notice and safety advice
This device is for use as a transmitter. It is not a safety device. Where a device failure could endanger human life and
property, it is the responsibility of the client, installer and system designer to add additional safety devices to prevent
such a device failure. Ignoring specifications and local regulations may cause equipment damage and endangers life and
property. Tampering with the device and misapplication will void warranty.
Power supply
Operating voltage
24 V AC 50/60 Hz ± 10%, 24 VDC ± 10%
SELV to HD 384, class II transformer, 48 VA max.
Power consumption
Max. 2 VA
Connection
Terminal connectors
For wire 0.34…2.5 mm2(AWG 24…12)
CO2 measurement
Sensing method
Non-dispersive infrared (NDIR) waveguide technology
with ABC automatic background calibration algorithm
Response time (90%)
2 Minutes
Measurement range
0 - 2000 ppm vol.
Repeatability
± 20 ppm ± 1 % of measured value
Accuracy
± 40 ppm ± 3 % of measured value
Pressure dependence
+ 1.6 % reading per kPa deviation from normal
pressure, 100 kPa
Temperature -
measurement
Accuracy:
0…50°C (32…122°F):
50…60°C (122…158°F):
0.5 K
1 K
Note on accuracy: allow one hour after power up for compensation swing in
Signal outputs
Analog outputs
Output signal
Resolution
Maximum load
DC 0-10 V or 0…20 mA
10 bit, 9.7 mV, 0.019.5 mA
Voltage signal: ≥1kΩ, current signal: ≤500Ω
Environment
Operation
Climatic conditions
Temperature
Humidity
To IEC 721-3-3
class 3 K5
0…50° C (32…122° F)
<95% RH non-condensing
Transport & storage
Climatic conditions
Temperature
Humidity
Mechanical conditions
To IEC 721-3-2 and IEC 721-3-1
class 3 K3 and class 1 K3
-30…70° C (-22…158° F)
<95% RH non-condensing
class 2M2
General
Degree of protection
IP30 to EN 60 529
Safety class
III (IEC 60536)
Material: Cover
Mounting plate
Fire proof ABS plastic
Galvanized steel
Dimensions (H x W x D)
21 x 88 x 88 mm (0.8 x 3.5 x 3.5 in)
Weight (including package)
175 g (6.2 oz.)

SRC-C1T1
PRODUCT DATA SHEET
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Dimension mm (inch)
Mounting location
•On a flat, easily accessible inner wall
•The following installation locations should be avoided:
oProtect from direct exposure to sunlight
oDo not install near heat sources, e.g. radiators or other heat-generating devices
oAir storage spaces and niches, e.g. behind doors or shelves
oOutside walls insufficiently insulated
oIn the direct sphere of influence of ventilation openings and fans
Mounting instruction
See installation sheet no. 70-000572 (www.vectorcontrols.com).
Jumper settings and indication lights
Air quality LED
Standard: Pulsing in 5 sec intervals:
No light : no power or unit damaged
Green : Low CO2 level
Orange : Medium CO2 level
Red : High CO2 level
Calibration: 2 blinking in 2 sec intervals
Green : 400ppm calibration
Red : 0ppm calibration
JP1 Signal range
OPA-S or OPU-S
JP1
AO1, AO2: 0-10V
AO1, AO2: 2-10V
1
2
3
1
2
3
STATUS
Status LED
No light: either no power or sensing element is
reversed.
5 sec flashing: Normal
2 second blinking: calibration
10 second pulse: calibration success
Constant red > 10 sec: Calibration or sensor error
1
2
3
4
V+
GND
AO1 CO2
AO2 T
Air Quality
CO2
Sensor
5
Not used
88 (3.5)
88 (3.5)
21 (0.8)

SRC-C1T1
PRODUCT DATA SHEET
Doc: 70-00-0794, V2, 20200311 © Vector Controls GmbH, Switzerland Page 4
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Configuration
The transmitter can be adapted to fit perfectly into any application by adjusting the software parameters. The
parameters are set with the operation terminals OPA-S. The OPA-S may also be used as remote indicator.
Note: For correct display version 1.7 of OPA-S is required.
Input configuration
Parameter
Description
Range
Default
IP 00
TI1: Celsius or Fahrenheit, C = OFF, F = ON
ON, OFF
OFF
IP 01
TI1: Samples taken for averaging control signal
1…255
10
IP 02
TI1: Calibration
-10…10
0
IP 03
TI1: Minimum temperature
-40…215 °C/F
-40 °C
IP 04
TI1: Maximum temperature
-40…215 °C/F
60 °C
IP 05
CI1: Enable display of air quality LED on front.
ON, OFF
ON
IP 06
CI1: Samples taken for averaging control signal
1…255
10
IP 07
CI1: Calibration
-10…10%
0
IP 08
CI1: Minimum CO2 range ppm
(concentration when output is at its minimum)
0…5000 ppm
0 ppm
IP 09
CI1: Maximum CO2 range ppm
(concentration when output is at maximum)
0…5000 ppm
2000 ppm
IP 10
CI1: Level for medium CO2 concentration (orange light)
0…5000 ppm
800 ppm
IP 11
CI1: Level for high CO2 concentration (red light)
0…5000 ppm
1500 ppm
IP 12
CI1: Enable ABC automatic background calibration
ON, OFF
ON
IP 13
CI1: Calibrate CO2 sensor. Note: For normal operation,
calibration is not required. Only experts should calibrate
the sensor.
0 = No calibration (default)
1 = Calibrate to gas (0 ppm)
2 = Calibrate to fresh air (400 ppm)
0 - 2
0
Output configuration
Parameter
Description
Range
Default
OP 00
AO1: CO2: Configuration of output signal:
0 = Feedback CO2 input,
1 = Feedback CO2 minimum value
2 = Feedback CO2 maximum value
0 –2
0
OP 01
AO1: CO2: Minimum limitation of output signal
0 –Max. %
0%
OP 02
AO1: CO2: Maximum limitation of output signal
Min. –100%
100%
OP 03
AO2: Temperature: Configuration of output signal:
0 = Feedback temperature input,
1 = Feedback temperature minimum value
2 = Feedback temperature maximum value
0 –2
0
OP 04
AO2: Temperature: Minimum limitation of output signal
0 –Max %
0%
OP 05
AO2: Temperature: Maximum limitation of output signal
Min –100%
100%
Output signal configuration
The signal range may be set with JP1 for both analog outputs. JP1 will only
operate if the output range specified with OP01/OP02 or OP04/OP05 is left at
the default position of 0…100%. With any other setting the position of JP1
has no influence and the range defined with the output parameters applies.
Error messages shown on OPA-S
Err1: Communication error: Verify cable connections, cable type and maximum distance.
Err2: Temperature sensor error (element damaged or missing)
Err3: CO2 sensor error: Make sure the sensor is not miss-calibrated. If possible, execute 400 ppm calibration. (See
below). If error cannot be removed by calibrating the sensor, replace product.
Signal range
JP1
0 –10 V
(1-2)
2 –10 V
(2-3)

SRC-C1T1
PRODUCT DATA SHEET
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Use as P-controller
The CO2-transmitter may be converted into a proportional fresh air controller through a simple change of two
parameter settings:
Set a minimum concentration when the fresh air fan should start to run at its minimum speed for example 500 ppm.
Set this as the minimum value in IP08 parameter. Then define the value when the fan should run at full speed, for
example 1000 ppm and set this value in IP09. Your transmitter has now been converted into an air quality P-controller!
The fan will start to run if the CO2 concentration is higher than 500 ppm. It increases to its maximum when CO2
concentration reaches 1000 ppm.
Calibration
The default sensor OEM unit is maintenance free in normal environments thanks to the built-in self-correcting ABC
algorithm (Automatic Baseline Correction). This algorithm constantly keeps track of the sensor’s lowest reading over a 7
days interval and slowly corrects for any long-term drift detected as compared to the expected fresh air value of 400
ppm CO2.
Rough handling and transportation might, however, result in a reduction of sensor reading accuracy. With time, the ABC
function will tune the readings back to the correct numbers. The default “tuning speed” is however limited to about 30
ppm/week. For post calibration convenience, in the event that one cannot wait for the ABC algorithm to cure any
calibration offset, manual calibration may be activated using following procedure. There are two calibration possibilities:
0 ppm and 400 ppm. Only one calibration needs to be performed.
Calibration to 400 ppm (Fresh air)
1. Connect OPA-S and expose the active sensor for at least 5 minutes to fresh outside air. It is important to
expose the sensor to only fresh air. An open window close to the sensor with a higher level of CO2 could
prevent a stable signal. Observe the CO2 value on the OPA-S.
2. Once the CO2 value has stabilized, login with the OPA-S and set IP13 = 2, then exit configuration mode. The
air quality led will blink green colour 2 times alternating with the status led in 2 second intervals.
3. The sensor will now wait for a stable concentration. Once the calibration has been executed, the status LED will
show constant RED and the green air quality led will blink for 10s if successful. If calibration is not successful
(no stability of concentration for 5 min, no communication with sensor) the red air quality led will blink instead
and the status LED will stay constantly on red in error mode. Recalibrate or restart device to stop error mode.
4. You may additionally verify the calibration using the OPA-S. If successful IP13 will change to 0. If unsuccessful
the value of IP13 changes to 4.
5. If unsuccessful, wait at least 1 minute before repeating the procedure again. Make sure that the sensor
environment is steady and calm!
Calibration to 0 ppm with CO2 free gas
1. Connect OPA-S and place the sensor in a container filled with a gas mixture which is free from CO2 (i.e.
Nitrogen or Soda Lime CO2 scrubbed air). Observe the CO2 value on the OPA-S.
2. Once the CO2 value has stabilized, login with the OPA-S and set IP13 = 1, then exit configuration mode. The
air quality LED will blink in red colour 2 times alternating with the status led in 2 second intervals.
3. The sensor will now wait for a stable concentration. Once the calibration has been executed, the status LED will
show constant RED and the green air quality led will blink for 10s if successful. If calibration is not successful
(no stability of concentration for 5 min, no communication with sensor) the red air quality led will blink instead
and the status LED will stay constantly on red in error mode. Recalibrate or restart device to stop error mode.
4. You may additionally verify the calibration using the OPA-S. If successful IP13 will change to 0. If unsuccessful
the value of IP13 changes to 4.
5. If unsuccessful, wait at least 1 minute before repeating the procedure again. Make sure that the sensor
environment is steady and calm!

SRC-C1T1
PRODUCT DATA SHEET
Doc: 70-00-0794, V2, 20200311 © Vector Controls GmbH, Switzerland Page 6
Subjects to alteration www.vectorcontrols.com
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