General. Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 1 of 6

Transcription

1 General World smallest and economic solid state electrochemical CO 2 sensor has been developed for the production. It holds many patents in the structure and the materials of the sensor as well as the detecting algorithm. The performance of the sensor is comparable with the NDIR CO 2 sensor with a half price and less than a half size. Product Specification 300 TH CO 2 Sensor Module : X-300 Features Economical CO 2 Sensor Module combined Temp.& Humidity Measurements Accuracy : Approx. ±10%, ±1, ±3% Life Expectation : 10years Interface : AVO / Relay / TTL UART / I2C Power : DC 6~18V Size : 55Ⅹ35Ⅹ15mm Applications Indoor Air Quality control (Air Conditioning/Cleaning/Ventilation) in office, home and factories. Climate Control System All applications for CO 2 &Temp&Humidity Control Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 1 of 6

2 X-300 TH Specification CO 2 Product Data Time Operating & Storage Environment Power Outputs and Communication Mechanical Performance Temperature/ Humidity Model Sensing Method Detection Range X-300 TH Solid State Electrolyte CO 2 Sensor Module 300~2,000/5,000/10,000ppm(Optional) Accuracy Approx. ±10% Resolution Response Time Warm up Time Sampling Interval Life Expectation 1ppm 2min to 90% for diffusion sampling method Less than 30min 1sec. 10years (@Self-Calibration Mode) Operating Temp. 0~50 (sensor will function down to -20 ) Operating Humidity 0~95% RH (Non-Condensing) Storage Temp. -40~70 Power Supply Current Consumption Analog OUT Relay OUT CO 2 Digital OUT1 CO 2, Temp, Digital OUT2 Humidity. Output Connector Dimensions (L*W*H) Holes Operating Range & Accuracy DC 6~18V (6~12V Recommended) (Unprotected against surges and reverse connection) Normal : 70mA Peak : 140mA (@9V) VDC 0~3.3V(Linear Output) Digital Low/High output TTL Level RS-232 (Driver Optional) I2C 7pin/6pin (2.54mm pitch Socket) Approx. 55*35*15mm 3.2Ф 3EA 0~85, Approx. ±1 0~95% (Non-Condensing), Approx. ±3% Calibration Method Manual and Self Note! This product is not designed and authorized for use as a critical component in life support applications wherein a failure or malfunction of the products may result in injury or threat to life. EXSEN Co. reserves the right to make changes without notice to this product to improve reliability, functioning or design. Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 2 of 6

3 General PCB Overview Dimensions (unit:mm) Figure 1. X-300 TH mechanical Dimensions Connections Connector 1 Pin No. Name Description 1 VCC Power 2 GND Power Ground 3 AVO Analog Voltage Output 4 STATUS1 Digital output, Warm-up(High)/Normal(Low) 5 STATUS2 Digital output, Error(High)/Normal(Low) 6 Relay1 Digital output, 1,000ppm(High)/900ppm(Low) 7 Relay2 Digital output, 1,500ppm(High)/1,400ppm(Low) Connector 2 Pin No. Name Description 1 VCC Power 2 GND Power Ground 3 RS232 TX 4 RS232 RX 5 I 2 C SCL Figure 2. X-300 TH connector positions. 6 I 2 C SDA Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 3 of 6

4 Terminal Descriptions (1) Analog Communication AVO Output Range Output Resolution Minimum Road (Rm) 0~3.3V (Linear Output) 12bits 10KΩ CO 2 Sensor Module Rm Output Voltage 3.3V 0V 300ppm CO 2 Con. 2,000ppm Serial Communication (5,000 or 10,000ppm) UART Protocol Item Description Baud Rate 9,600 bps Parity No Parity Number Of Bits 8 DATA Transmit Interval : 1 Seconds Handshake protocol : None (Data is transmitted to outer device periodically) Stop Bir 1 DATA Format CO 2 SP Temperature SP Humidity SP Status SP Error CR x x x x x x x. x x x S t E r D0 D1 D2 D3 SP D4 D5 D6 DP D7 SP D8 D9 SP S1 S2 SP E1 E2 CR D0 ~ D3 D4~D6 DP D7 D8 ~ D9 S1 ~ S2 E1 ~ E2 SP CR 4byte CO 2 density string 3byte Temperature integer Decimal point : 0x2E 1byte Temperature decimal 2byte Humidity integer WU or Nr string WU : Warm-Up, Nr : Normal Nr or Er string Nr : Normal, Er : Exchange CO 2 sensor Space : 0x20 Carriage return : 0x0D EX) In case CO 2 : 538ppm, Temperature : 25.8 Humidity : 50% Status : Warm-Up Error : Normal 0x30 0x35 0x33 0x38 0x20 0x30 0x32 0x35 0x2E 0x38 0x20 0x35 0x30 0x20 0x57 0x55 0x4E 0x72 0x0D WU Nr <CR> Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 4 of 6

5 Terminal Descriptions (2) Relay Communication Using Relay Terminal 1 and 2, the User can control ventilation equipment easily. If the user need to change the reference CO 2 concentration, please contact EXSEN Co. Terminals Output Correspondence Relay 1 0V Low 0.75V 2.3V High 3.3V V 900ppm CO 2 Con. 2 1,000ppm Relay 2 0V Low 0.75V 2.3V High 3.3V V 1,400ppm CO 2 Con. 1,500ppm I2C Communication Internal pull up resister Slave Address :0ⅹ23 SCL clock frequency : 200Khz Slave Address Byte : Slave Address (0ⅹ23) 7Bit+R/W 1bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit R/W Bit R/W Bit : Read=1/Write =0 When Reading the data, Slave Address Byte is 0ⅹ46 When Writing the data, Slave Address Byte is 0ⅹ47 Measurement Packet Reads Start Address ACK Command ACK Start Address ACK Data 1 ACK Data n NACK Stop Master Master Slave Master Slave Master Master Slave Slave Master Slave Master Master Command 0xA1 : All data(co 2, Temperature, Humidity, Status, Error) CO 2 _H CO 2 _L TEMP 10_H TEMP 10_L HUMI 10_H HUMI 10_L Status Error 0xA2 : CO 2 data 0xA3 : Temperature data 0xA4 : Humidity data 0xA5 : Status & Error data CO 2 _H CO 2 _L TEMP 10_H TEMP 10_L HUMI 10_H H HUMI 10_L Status Error CO 2 : 2byte, 300 ~ 10,000 TEMP : 2byte, -1,000 ~ 1,000, 10 Gain HUMI : 2byte, -1,000 ~ 1,000, 10 Gain STATE : 1 = Warm-up, 0 = Normal ERROR : 1 = Exchange CO 2 sensor, 0 = Normal Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 5 of 6

6 Maintenance Installation The modules are factory calibrated and ready for use directly after power up. There are several alternative ways to connect the X-300 TH to a host system (see also figure 2): 1. Using Analog Terminal, including terminals for power supply (G+ and G0), AVO.(STATUS1&2 is optional) 2. Using Relay Terminal, including terminals for power supply (G+ and G0), Relay 1&2. (STATUS1&2 is optional) 3. Using Serial Terminal, including terminals for power supply (G+ and G0), UART (TxD,RxD). 4. Using I2C Terminal, including terminals for power supply (G+ and G0), I2C (SCL,SDA). Self & Manual Calibration Mode 1. User can select Self-Calibration Mode or Manual Calibration Mode. 2. Self-Calibration Mode is programmed to set the minimum concentration to 450ppm in a 2 day period. 3. Manual Calibration Mode enforces the concentration to be set at 450ppm with a corresponding command. For Manual Calibration, * It has to be placed in a clean and open environment. * It would be better to start manual-calibrating at least 1 hour after installed. * Exhaled breath may affect the calibration. Command List for Self & Manual Calibration 1. CALI=0 : Enter Self-Calibration Mode 2. CALI=1 : Enter Manual Calibration Mode (Abandon Self-Calibration Mode) 3. CALI=10 : Action ; Set the concentration to 450ppm Switching Calibration Mode 1. Self Calibration Mode is programmed in the factory by default. 2. Changing to Manual Calibration Mode from Self Calibration Mode * Enter into the Manual Calibration mode by inputting the Command CALI=1. Subsequent input of the command, CALI=10, makes the concentration set to 450ppm. * Once set to Manual Calibration, it maintains manual mode even after it is turned off. 3. Changing to Self Calibration Mode from Manual Calibration Mode * Enter into the Self-Calibration mode by inputting the Command CALI=0. It will automatically set its lowest value in a 2day period to 450ppm. * Once set to Manual Calibration, it maintains manual mode even after it is turned off. Note! The X-300 TH is basically maintenance free in normal environments thanks to the built-in self calibration algorithm. Discuss your application with EXSEN in order to get advice for a proper calibration strategy. Thank you! EXSEN Co. #501, Hanbat Culture-leading Center(HBCC) 705, Gwanpyung-dong dong, Yuseong-gu gu, Daejeon Korea Phone : Fax : deux1012@kaist.ac.kr Webpage : Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 6 of 6

7 General World smallest and economic solid state electrochemical CO 2 sensor has been developed for the production. It holds many patents in the structure and the materials of the sensor as well as the detecting algorithm. The performance of the sensor is comparable with the NDIR CO 2 sensor with a half price and less than a half size. Product Specification CO 2 Sensor Module : X Precision module - Features Small & Economical CO 2 Sensor Module Accuracy : Approx. ±10% Life Expectation : 10years Interface : AVO / Relay / TTL UART / I2C Power : DC 6~18V Size : 30Ⅹ 20 Ⅹ 29 mm Applications Indoor Air Quality control (Air Conditioning/Cleaning/Ventilation) in office, home and factories. Climate Control System Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 1 of 6

8 X-200 Specification Product Model X-200 Sensing Method Solid State Electrolyte CO 2 Sensor Module Detection Range 300~2,000/5,000/10,000ppm(Optional) Data Accuracy Approx. ±10% Time Resolution Response Time Warm up Time Sampling Interval Life Expectation 1ppm 2min to 90% for diffusion sampling method Less than 30min 1sec. 10years (@Self-Calibration Mode) Operating & Storage Environment Operating Temp. 0~50 (sensor will function down to -20 ) Operating Humidity 0~95% (Non-Condensing) Storage Temp. -40~70 Power Outputs and Communication Mechanical Performance Power Supply Current Consumption Analog OUT Relay OUT Digital OUT1 Digital OUT2 Output Connector Dimensions (L*W*H) DC 6~18V (6~12V Recommended) (Unprotected against surges and reverse connection) Normal : 70mA Peak : 140mA (@9V) VDC 0~3.3V(Linear Output) Digital Low/High output TTL Level RS-232 (Driver Optional) I2C 7pin/6pin (2.0mm pitch Socket) Approx. 30*20*29 mm Calibration Method Manual and Self Note! This product is not designed and authorized for use as a critical component in life support applications wherein a failure or malfunction of the products may result in injury or threat to life. EXSEN Co. reserves the right to make changes without notice to this product to improve reliability, functioning or design. Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 2 of 6

9 General PCB Overview Dimensions (unit:mm) Figure 1. X-200 mechanical Dimensions Connections Connector 1 Pin No. Name Description 1 VCC Power 2 GND Power Ground 3 AVO Analog Voltage Output 4 STATUS1 Digital output, Warm-up(High)/Normal(Low) 5 STATUS2 Digital output, Error(High)/Normal(Low) 6 Relay1 Digital output, 1,000ppm(High)/900ppm(Low) 7 Relay2 Digital output, 1,500ppm(High)/1,400ppm(Low) Connector 2 Pin No. Name Description 1 VCC Power 2 GND Power Ground 3 RS232 TX 4 RS232 RX 5 I2C SCL Figure 2. X-200 connector positions. 6 I2C SDA Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 3 of 6

10 Terminal Descriptions (1) Analog Communication AVO Output Range Output Resolution Minimum Road (Rm) 0~3.3V (Linear Output) 12bits 10KΩ CO 2 Sensor Module Rm Output Voltage 3.3V 0V 300ppm CO 2 Con. 2,000ppm (5,000 or 10,000ppm) Serial Communication UART Protocol Item Description Baud Rate 9,600 BPS Parity No Parity Number Of Bits 8 DATA Transmit Interval : 1 Seconds Handshake protocol : None (Data is transmitted to outer device periodically) Stop Bit 1 DATA Format CO 2 SP Status SP Error CR x x x x S t E r D0 D1 D2 D3 SP S1 S2 SP E1 E2 CR D0 ~ D3 S1 ~ S2 E1 ~ E2 SP CR 4byte CO 2 density string WU or Nr string WU : Warm-Up, Nr : Normal Nr or Er string Nr : Normal, Er : Exchange CO 2 sensor Space : 0x20 Carriage return : 0x0D EX) In case CO 2 : 538ppm, Status : Warm-Up, Error : Normal 0x30 0x35 0x33 0x38 0x20 0x30 0x32 0x35 0x2E 0x38 0x20 0x35 0x30 0x20 0x57 0x55 0x4E 0x72 0x0D WU Nr <CR> Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 4 of 6

11 Terminal Descriptions (2) Relay Communication Using Relay Terminal 1 and 2, the User can control ventilation equipment easily. If the user need to change the reference CO 2 concentration, please contact EXSEN Co. Terminals Output Correspondence Relay 1 0V Low 0.75V 2.3V High 3.3V V 900ppm CO 2 Con. 2 1,000ppm Relay 2 0V Low 0.75V 2.3V High 3.3V V 1,400ppm CO 2 Con. 1,500ppm I2C Communication Internal pull up resister Slave Address :0ⅹ23 SCL clock frequency : 200Khz Slave Address Byte : Slave Address (0ⅹ23) 7Bit+R/W 1bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit R/W Bit R/W Bit : Read=1/Write =0 When Reading the data, Slave Address Byte is 0ⅹ46 When Writing the data, Slave Address Byte is 0ⅹ47 Measurement Packet Reads Start Address ACK Command ACK Start Address ACK Data 1 ACK Data n NACK Stop Master Master Slave Master Slave Master Master Slave Slave Master Slave Master Master Command 0xA1 : All data(co 2, Status, Error) 0xA2 : CO 2 data 0xA5 : Status & Error data CO 2 _H CO 2 _L Status Error CO 2 _H CO 2 _L Status Error CO 2 : 2byte, 300 ~ 10,000 STATE : 1 = Warm-up, 0 = Normal ERROR : 1 = Exchange CO 2 sensor, 0 = Normal Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 5 of 6

12 Maintenance Installation The modules are factory calibrated and ready for use directly after power up. There are several alternative ways to connect the X-200 to a host system (see also figure 2): 1. Using Analog Terminal, including terminals for power supply (G+ and G0), AVO.(STATUS1&2 is optional) 2. Using Relay Terminal, including terminals for power supply (G+ and G0), Relay 1&2. (STATUS1&2 is optional) 3. Using Serial Terminal, including terminals for power supply (G+ and G0), UART (TxD,RxD). 4. Using I2C Terminal, including terminals for power supply (G+ and G0), I2C (SCL,SDA). Self & Manual Calibration Mode 1. User can select Self-Calibration Mode or Manual Calibration Mode. 2. Self-Calibration Mode is programmed to set the minimum concentration to 450ppm in a 2 day period. 3. Manual Calibration Mode enforces the concentration to be set at 450ppm with a corresponding command. For Manual Calibration, * It has to be placed in a clean and open environment. * It would be better to start manual-calibrating at least 1 hour after installed. * Exhaled breath may affect the calibration. Command List for Self & Manual Calibration 1. CALI=0 : Enter Self-Calibration Mode 2. CALI=1 : Enter Manual Calibration Mode (Abandon Self-Calibration Mode) 3. CALI=10 : Action ; Set the concentration to 450ppm Switching Calibration Mode 1. Self Calibration Mode is programmed in the factory by default. 2. Changing to Manual Calibration Mode from Self Calibration Mode * Enter into the Manual Calibration mode by inputting the Command CALI=1. Subsequent input of the command, CALI=10, makes the concentration set to 450ppm. * Once set to Manual Calibration, it maintains manual mode even after it is turned off. 3. Changing to Self Calibration Mode from Manual Calibration Mode * Enter into the Self-Calibration mode by inputting the Command CALI=0. It will automatically set its lowest value in a 2day period to 450ppm. * Once set to Manual Calibration, it maintains manual mode even after it is turned off. Note! The X-200 is basically maintenance free in normal environments thanks to the built-in self calibration algorithm. Discuss your application with EXSEN in order to get advice for a proper calibration strategy. Thank you! EXSEN Co. #501, Hanbat Culture-leading Center(HBCC) 705, Gwanpyung-dong dong, Yuseong-gu gu, Daejeon Korea Phone : Fax : deux1012@kaist.ac.kr Webpage : Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 6 of 6

13 General World smallest and economic solid state electrochemical CO 2 sensor has been developed for the production. It holds many patents in the structure and the materials of the sensor as well as the detecting algorithm. The performance of the sensor is comparable with the NDIR CO 2 sensor with a half price and less than a half size. Product Specification CO 2 Sensor Module : X Commercial module - Features Small & Economical CO 2 Sensor Module Accuracy : ±100ppm Life Expectation : 10years Interface : Relay / TTL UART / I2C Power : DC 5V±0.1V (Regulated) Size : 30Ⅹ 20 Ⅹ 19mm Applications Air Conditioner Air Cleaner Diffuser Control Total Heat Exchanger Control Home Net Room Panel Ventilation System Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 1 of 6

14 X-100 Specification Product Model X-100 Sensing Method Solid State Electrolyte CO 2 Sensor Module Data Time Detection Range Accuracy Resolution Response Time Warm up Time Sampling Interval Life Expectation 300~2,000/5,000/10,000ppm(Optional) Approx. ±100ppm 50ppm 2min to 90% for diffusion sampling method Less than 30min 1sec. 10years (@Self-Calibration Mode) Operating & Storage Environment Operating Temp. 0~50 (sensor will function down to -20 ) Operating Humidity 0~95% RH(Non-Condensing) Storage Temp. -40~70 Power Outputs and Communication Mechanical Performance Power Supply Current Consumption Relay OUT Digital OUT1 Digital OUT2 Output Connector Dimensions (L*W*H) DC 5V±0.1V (Regulated) (Unprotected against surges and reverse connection) Normal : 60mA Peak : 110mA (@5V) Digital Low/High output TTL Level RS-232 (Driver Optional) I2C 7pin/6pin (2.00mm pitch Socket) Approx. 30*20*29 mm Calibration Method Manual and Self Note! This product is not designed and authorized for use as a critical component in life support applications wherein a failure or malfunction of the products may result in injury or threat to life. EXSEN Co. reserves the right to make changes without notice to this product to improve reliability, functioning or design. Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 2 of 6

15 General PCB Overview Dimensions (unit:mm) Figure 1. X-100 mechanical Dimensions Connections Connector 1 Pin No. Name Description 1 VCC Power 2 GND Power Ground 3 None None 4 STATUS1 Digital output, Warm-up(High)/Normal(Low) 5 STATUS2 Digital output, Error(High)/Normal(Low) 6 Relay1 Digital output, 1,000ppm(High)/900ppm(Low) 7 Relay2 Digital output, 1,500ppm(High)/1,400ppm(Low) Connector 2 Pin No. Name Description 1 VCC Power 2 GND Power Ground 3 RS232 TX 4 RS232 RX 5 I2C SCL Figure 2. X-100 connector positions. 6 I2C SDA Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 3 of 6

16 Terminal Descriptions (1) Serial Communication UART Protocol Item Baud Rate Parity Description 9,600 bps No Parity DATA Transmit Interval : 1 Seconds Handshake protocol : None (Data is transmitted to outer device periodically) Number Of Bits 8 Stop Bit 1 DATA Format CO 2 SP Status SP Error CR x x x x S t E r D0 D1 D2 D3 SP S1 S2 SP E1 E2 CR D0 ~ D3 S1 ~ S2 E1 ~ E2 SP CR 4byte CO 2 density string WU or Nr string WU : Warm-Up, Nr : Normal Nr or Er string Nr : Normal, Er : Exchange CO 2 sensor Space : 0x20 Carriage return : 0x0D EX) In case CO 2 : 538ppm, Status : Warm-Up, Error : Normal 0x30 0x35 0x33 0x38 0x20 0x30 0x32 0x35 0x2E 0x38 0x20 0x35 0x30 0x20 0x57 0x55 0x4E 0x72 0x0D WU Nr <CR> Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 4 of 6

17 Terminal Descriptions (2) Relay Communication Using Relay Terminal 1 and 2, the User can control ventilation equipment easily. If the user need to change the reference CO 2 concentration, please contact EXSEN Co. Terminals Output Correspondence Relay 1 0V Low 0.75V 2.3V High 3.3V V 900ppm CO 2 Con. 2 1,000ppm Relay 2 0V Low 0.75V 2.3V High 3.3V V 1,400ppm CO 2 Con. 1,500ppm I2C Communication Internal pull up resister Slave Address :0ⅹ23 SCL clock frequency : 200Khz Slave Address Byte : Slave Address (0ⅹ23) 7Bit+R/W 1bit Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit R/W Bit R/W Bit : Read=1/Write =0 When Reading the data, Slave Address Byte is 0ⅹ46 When Writing the data, Slave Address Byte is 0ⅹ47 Measurement Packet Reads Start Address ACK Command ACK Start Address ACK Data 1 ACK Data n NACK Stop Master Master Slave Master Slave Master Master Slave Slave Master Slave Master Master Command 0xA1 : All data(co 2, Status, Error) 0xA2 : CO 2 data 0xA5 : Status & Error data CO 2 _H CO 2 _L Status Error CO 2 _H CO 2 _L Status Error CO 2 : 2byte, 300 ~ 10,000 STATE : 1 = Warm-up, 0 = Normal ERROR : 1 = Exchange CO 2 sensor, 0 = Normal Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 5 of 6

18 Maintenance Installation The modules are factory calibrated and ready for use directly after power up. There are several alternative ways to connect the X-100 to a host system (see also figure 2): 1. Using Relay Terminal, including terminals for power supply (G+ and G0), Relay 1&2.(STATUS1&2 is optional) 2. Using Serial Terminal, including terminals for power supply (G+ and G0), UART (TX,RX). 3. Using I2C Terminal, including terminals for power supply (G+ and G0), I2C (SCL,SDA). Self & Manual Calibration Mode 1. User can select Self-Calibration Mode or Manual Calibration Mode. 2. Self-Calibration Mode is programmed to set the minimum concentration to 450ppm in a 2 day period. 3. Manual Calibration Mode enforces the concentration to be set at 450ppm with a corresponding command. For Manual Calibration, * It has to be placed in a clean and open environment. * It would be better to start manual-calibrating at least 1 hour after installed. * Exhaled breath may affect the calibration. Command List for Self & Manual Calibration 1. CALI=0 : Enter Self-Calibration Mode 2. CALI=1 : Enter Manual Calibration Mode (Abandon Self-Calibration Mode) 3. CALI=10 : Action ; Set the concentration to 450ppm Switching Calibration Mode 1. Self Calibration Mode is programmed in the factory by default. 2. Changing to Manual Calibration Mode from Self Calibration Mode * Enter into the Manual Calibration mode by inputting the Command CALI=1. Subsequent input of the command, CALI=10, makes the concentration set to 450ppm. * Once set to Manual Calibration, it maintains manual mode even after it is turned off. 3. Changing to Self Calibration Mode from Manual Calibration Mode * Enter into the Self-Calibration mode by inputting the Command CALI=0. It will automatically set its lowest value in a 2day period to 450ppm. * Once set to Manual Calibration, it maintains manual mode even after it is turned off. Note! The X-100 is basically maintenance free in normal environments thanks to the built-in self calibration algorithm. Discuss your application with EXSEN in order to get advice for a proper calibration strategy. Thank you! EXSEN Co. #501, Hanbat Culture-leading Center(HBCC) 705, Gwanpyung-dong dong, Yuseong-gu gu, Daejeon Korea Phone : Fax : deux1012@kaist.ac.kr Webpage : Copyright 2013 EXSEN Company. All Rights Reserved. Rev /5/2013 Page 6 of 6