n Technical Specification Measuring Type Dual Light Wavelength Non-Dispersive Infrared (NDIR) Measuring Range 0 ~ 3,000 / 5,000 ppm Accuracy ±60 ppm, ±3% measured value @10 ~ 50℃ Response Time 0 ~ 80% < 30Sec Signal Update
Time Every 2.0 Seconds Warm-up Time @25℃ < 90Sec Operating Condition -10 ~ 50℃, 0 ~ 99.5% RH (Non Condensing) Output Analog : 0~3VDC (0~3000, 5000, 10,000 ppm) UART: 9600bps Power Input DC5V ~ 9V Input Consumption Current Normal 35mA, Peak point 80mA Interface 4PIN Header[CN1] With 2.54mm spacing. Refer to dimension size (W)40mm x (H)36mm x (D)11.35mm ♣
This
product can be changed for quality improvement without notification n Tolerance range according to the
measured value n Features 1. Cutting-Edge NDIR (Non-dispersive Infrared) Method that detects CO2 in the air. 2. Analog and Digital output by request of
control system A.
Analog Output: 0~3V (0~3000ppm) B. Digital Output: UART (3.3V Level
RS-232) Output ※ Enable to make changes in specifications and protocol on
customer’s demands. n Output option 1. Digital Output: UART (TTL Level) A.
SH-300DC Format (ASCII Data) l
Baud rate : 9600bps l
Signal update term : every 2 seconds 1 2 3 4 5 6 CO2 Value CR LF Output
example) When CO2 concentration is 1000ppm, 1000[13][10F] Hex value ( ASCII ) : 0x31,
0x30, 0x30, 0x30, 0x0D, 0x0A 2.
Analog Output (CO2 only) l
CO2: 0 ~ 3V (0 ~ 3000 /
5000 / 10000ppm) ** Output
Current: Max 30mA A.
Analog Output table 3000ppm 5000ppm 10000ppm 0V 0ppm 0ppm 0ppm 1V 1000ppm 1666.7ppm 3333.3ppm 2V 2000ppm 3333.3ppm 6666.7ppm 3V 3000ppm 5000ppm 10000ppm n
PC communication 1.
UART interface A. Use RS-232
interface converter. Communicate
with PC using TTL signal is unsuitable, Thus,
communication by change voltage level 2.
Communication Program A. Use Hyper-terminal
or other Communication Program n Cautions 1. Products are
weak against the impact, and it may cause the change of characteristic. 2. When make alterations
on product, Please do it after technical consult with SOHA TECH 3. Please
avoid installation at environment that not match with working temperature and
humidity 4.
When install at external environment, please installed inside exterior case. 5. When
install at environment that worrying about condensation, please ask to SOHA TECH. (Optional
Coating)
