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ELT Sensor Corp.
Ver. 2.1 (Jan. 2014)
ELT Sensor
Carbon Dioxide (CO₂) Transmitter
(3-wired type) Operation Manual
CD-300 / CD-300NL
CD-300
(with LCD Display)
CD-300NL (without
LCD Display)
Features
• Non-Dispersive Infrared(NDIR) technology
is used to measure CO₂ levels.
• CO2 concentration can be measure as
General
Analog Voltage /Current value
(4~20mA / 2~10V or 0~20mA / 0~10V)
CD-300 and CD-300NL are Transmitter type
models of CO2 Sensor, which are for 0-20mA ,
4-20mA Current output module or 0-10V, 210V Voltage output module(Jumper select)
These models give 3 wired input power (2
PWR lines, 1 Common GND line).
• Input power 24VAC or 24VDC
•.CD-300NL (without Display) is available.
• Customer could select multiple functions
-. Either of Factory calibration mode or
automatic recalibration mode with 1 month
period after 3 days.
-. 10 minutes manual recalibration function
is available as needed.
-. CO2 measuring range change between
0~10,000ppm is available.
• Simple maintenance (S-200 sensor module
are separately connected to main board so
that easily managed)
• Size : 123 x 69 x 40 (mm)
APC Hero
01480 226600
[email protected]
ELT Sensor Corp.
Ver. 2.1 (Jan. 2014)
CD-300 Transmitter
Electrical Data
Specifications
Input Power
24VAC, 24VDC ± 20%, 50/60Hz
General Performance
(3-Wired)
Operating Temperature range
Output Signals
0 ~ 50℃
4 ~ 20mA or 2 ~ 10VDC
Operating Humidity range
0 ~ 20mA or 0 ~ 10VDC
0 ~ 95% RH (Non-condensing)
, (Jumper selectable
-voltage output or current output)
Storage Temperature
-20℃ ~60℃
CO₂ Measurement
Sensing Method
NDIR (Non-dispersive Infrared)
Measurement Range
0 to 2,000 / 3,000 / 5,000 / 10,000ppm
( with jumper position change)
Accuracy
±30ppm ±5%
Response Time(90%)
150 seconds
Sampling Interval
4 sec.
Operation mode selection
Two operation mode are available
Factory calibration mode and
Automatic calibration mode
Two manual recalibration methods are
available with manual recalibration by change
of J2 & J4 or by using TRB-100 Jig (TRB-100
Jig : additionally purchasable)
APC Hero
01480 226600
[email protected]
Dimensions (unit : mm)
ELT Sensor Corp.
Ver. 2.1 (Jan. 2014)
Jumper Function Descriptions
Front Inside View
■ Jumper A (J7, J3) group : Voltage,
Current output and range selection.
V : Voltage output
I : Current output
Jumper : C
Jumper : A
0~20mA : 0~20mA output @ Current.
0~10V output @ Voltage
4~20mA : 4~20mA output @ Current.
2~10V output @ Voltage.
Jumper : B
Rear View
Example setting :
ð Current output and 0
0~ 20mA output
■ Jumper B(J11) group : CO2 Measurement
range selection.
10K ppm : 0 ~ 10,000ppm CO2
5K ppm : 0 ~ 5,000ppm CO2
3K ppm : 0 ~ 3,000ppm CO2
2K ppm : 0 ~ 2,000ppm CO2
APC Hero
01480 226600
[email protected]
ELT Sensor Corp.
Ver. 2.1 (Jan. 2014)
2) 30,000ppm
ppm setting and LCD
(right end postion+3
postion+3rd position)
Real number : 8,710ppm,
11,250ppm
(Important notice : when jumper set on high
range (20,000~100,000ppm
ppm position
position), the
real ppm from LCD reading must be
calculated by LCD display number x 10 )
Example setting :
■ Jumper C (J2, J4) group : Operation
mode selection and 10 minute Recalibration
1) 0~2,000ppm setting and LCD
function
Factory calibration mode:
Both jumpers set to ‘OFF’,,
’OFF’ position
Automatic Recalibration
calibration mode :
If users want to operate this CD
CD-300 as
monthly automatic recalibration mode, please
set to ‘ON’ position (ACDL mode) (Auto
calibration acts first 3day, and every 30days
after power on)
Real number : 862ppm
(Notice : when jumper set on from
2000ppm ~ 10,000ppm position, the
LCD number is the real ppm)
10’
RECAL
recalibration
:
Users
can
(correction)
do
10
minutes
manual
function
when sensor showed much fault ppm.
(Pose Jumper-cap to ‘ON
ON’ position and wait
APC Hero
01480 226600
[email protected]
ELT Sensor Corp.
Ver. 2.1 (Jan. 2014)
over 11 minutes. After the setting of ambient
air-flowing
flowing status to be 400ppm finished
finished,
move back the Jumper-cap
cap to ‘OFF’ position
again.)
(For more information, please refer to detailed
recalibration manual)
Wire
ire connector.
Output signal calculation examples
Example setting :
Ex) 3,000ppm range 0~10V mode.
Read voltage 3.234V
3,000ppm / 10V * 3.234 = 970 ppm.
Ex) 3,000ppm range 2~10V mode.
Read voltage 3.234V
(3.234V - 2V) * (3000ppm / 8)= 462 ppm.
--------------------------------------------------
ð Monthly Automatic recalibrating
operation mode
ELT Sensor Corp.
(Chunui Technopark 101-909)
909) 36, Bucheon
Bucheon-ro 198beon-gil,
Wonmi-gu, Bucheon-si, Gyeonggi-do,
do, 420
420-857, Korea
Phone : .82-32-719-8055
Wiring Method
VIN+: 24VAC P or 24VDC+,
VIN-: 24VAC N or 24VDC-(GND),
(GND),
A-OUT: Output signal (Voltage or Curr
Current).
APC Hero
01480 226600
[email protected]
Fax : 82-70-8677-8055
http://www.eltsensor.co.kr
ELT Sensor All right reserved
Subject to change without notice. Printed in KOREA