MODEL NAME. :  DRAWING NO. :  REV :  PAGE  JUN. 19, 2009

Customer:

Agent:

PRELIMINARY SPECIFICATION

of

CO2 MEASUREMENT UNIT

MODEL NO.: CO2-4K-3M-P

176-17 Hirooka, Tottori-shi, 689-1193

TEL : +81-857-53-4666 FAX : +81-857-53-3532

APPROVED BY  CHECKED BY  DRAWN BY

CO2-4K-3M-P

PART NO.. :

PRLNDI-003  A  1 / 4

PRELIMINARY

MODEL NAME. :  DRAWING NO. :  REV :  PAGE  JUN. 19, 2009

CO2-4K-3M-P

PART NO.. :

PRLNDI-003  A  2 / 4

1. SCOPE

This specification describes a CO2 Measurement Unit supplied by Nippon Ceramic Co., Ltd.

2. TYPE of UNIT

2.1. TYPE NAME: CO2 Measurement Unit

2.2. MODEL NO.: CO2-4K-3M-P

3. DIMENSIONS

3.1. Dimensions

See Fig. 2.

3.2. Lot No.

Production Lot No. is put on a Unit.

4. GENERAL / ELECTRICAL CHARACTERISTICS

Table 1

PARAMETER  SPECIFICATION

4.1.  Operating Temperature  0 - 35 degrees Celsius

4.2.  Operating Humidity  0 - 95RH%, no condensing

PARAMETER Symbol  Min.  Typ.  Max.  Unit

4.3.  Supply Voltage  Vcc  4.5  5.0  5.5  V

4.4.  Supply Current 

4.5.  Peak Current (Lamp - “ON”) IC1  -  -  200  mA

4.6.  Ave. Current (Lamp - “ON”) IC2  -  -  110  mA

4.7.  Total Average  IC3  -  -  50  mA

4.8.  Output Current  Io  10  -  -  mA

4.9.  Warm-Up Time (after Power “ON”)  Ton *1  -  -  20  S

5. CO2 MEASUREMENT

Table 2

PARAMETER  Min.  Typ.  Max.  Unit

5.1.  Measurement Range  400  -  4000  ppm

5.2.  Resolution  -  -  20  ppm

5.3.  Accuracy 1 (Ta=25 degrees Celsius) -200  -  +200  ppm

5.4.  Accuracy 2 (Ta=0 - 35 degrees Celsius) -400  -  +400  ppm

5.5.  Response Time (90% )  -  -  180  S

(Ta=0～35℃)

6. PWM OUTPUT FORMAT

Table 3

6.1.  Measurement See Fig.1

6.2.  Unit Trouble  Continuous Hi

6.3.

PWM Output

During Warm-Up Time  Continuous Lo

PRELIMINARY

MODEL NAME. :  DRAWING NO. :  REV :  PAGE  JUN. 19, 2009

*1. When reading the Measurement Value, please read it as the Duty ratio.

There will be added +/-5% of error when reading only the width of “Hi” or “Lo”.

*2. In case of trouble inside the sensor unit, it will be “Hi”.

*3. After the power is turned on, it will be “Lo” for max. 20 sec.

Figure 1: PWM Output Format

CO2-4K-3M-P

PART NO.. :

PRLNDI-003  A  3 / 4

PRELIMINARY

MODEL NAME. :  DRAWING NO. :  REV :  PAGE  JUN. 19, 2009

Unit [mm]

Figure 2: Dimensions

CO2-4K-3M-P

PART NO.. :

PRLNDI-003  A  4 / 4

PRELIMINARY