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infrared methane sensor SJH series User Manual

infrared methane sensor SJH series User Manual
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infrared methane sensor SJH series User Manual - 1

USERS MANUAL Infrared Methane Gas Sensor For safety and alarming Wuhan Cubic Optoelectronics Co.Ltd Add: Fenghuang No.3 Road, Fenghuang Industrial Park Eastlake Hi-tech Development Zone Wuhan 430205, China Tel:86-27-81628831 Fax: 86-27-87405251

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infrared methane sensor SJH series User Manual - 2

INFRARED METHANE SENSOR | cubic

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infrared methane sensor SJH series User Manual - 3

This product must be used with explosion-proof equipments; the system wiring must comply with the product and the instructions associated with the use of equipment requirements shall not take the wrong terminal. Safety parameters and the maximum content of the equivalent parameter table below: Max input consumption summary ∑Pi(W) Max input current summary ∑Ii(mA) Maximum internal equivalent parameters Li(mH) This product and associated equipment’s connection cables should be protected by a sheath, the shield should be grounded. Users shall not replace the product components; in conjunction...

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infrared methane sensor SJH series User Manual - 4

1 Introduction 1.1 Briefing Welcome to use infrared methane gas sensor. It adopts advanced non-dispersive infrared technology and qualified raw materials and parts, which can be integrated in safety and alarming devices, able to be used for environmental monitoring, gas drainage monitoring; chemical, petroleum, metallurgy, oil depots, liquefied gas stations, paint jobs, gas transmission and distribution and other combustible gases, storage, indoor and outdoor use and so easy to leak dangerous places. The sensor has advantages like easy operation, precise measurement and stable performance,...

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infrared methane sensor SJH series User Manual - 5

USERS MANUAL Picture is only for reference INFRARED METHANE SENSOR | cubic

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infrared methane sensor SJH series User Manual - 6

2. Functions & Operation 2.1Appearane & I/O definition 2.1.1Appearance Power input(ground terminal) Voltage output UART-TX output UART-RX input INFRARED METHANE SENSOR | cubic

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infrared methane sensor SJH series User Manual - 7

USERS MANUAL 2.1.3 Digital output interface circuit (reference ] Digital output: TTL electrical level, voltage signal is 0 or 2.5v, 1. Connect with PC :pay attention to level switching when connecting external circuit, computer circuit is illustrated below: 2. Connect with CPU(SCM), baud rate: 9600bps A. If CPU is powered by 2.5 - 3.3V, CH4 gas sensor can be connected directly and make communication. Note: RXD of CH4 gas sensor is connected to TXD of CPU. TXD of CH4 gas sensor is connected to RXD B. If CPU is 5V, please change PWL. Here is for reference: (Or use the other PWL conversion...

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infrared methane sensor SJH series User Manual - 8

2.2Operation 2.2.1 Power on Be sure the preparation is OK before Power on: Power connection is right I/O ports connection is right 2.2.2 Power off Sensors must be power off under the standby mode (power off is not allowed when you operating zeroing and calibration). Before power off, the gas sensor should be in the measuring status in the fresh air for 1~3 minutes to ensure the gas cell emptying and avoid possible measurement error by the rest gas or dust. 2.2.3 Measurement After warm up, the gas sensor is standby. In this case, the sensor can measure CH4 concentration in existing...

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infrared methane sensor SJH series User Manual - 9

4. The length of command byte is [LB]+3. Command Format: [LB] byte length followed does not include CS [DF] parameter items with command, optional a. When the command is implemented correctly, it responses [LB] byte length followed does not include CS [DF] parameter items with command, optional b. When the command is not implemented correctly, it responses [NAK]=0X06 Command is not implemented correctly [LB]=2 byte length followed does not include CS [EC] the error code that command is not implemented correctly 1 Order length is wrong 3 Can't implement this command under current status....

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infrared methane sensor SJH series User Manual - 10

1. Look up measurement result Send11 01 01 ED Response[ACK] 05 01 [DF1] [DF2] [ST1] [ST2] [CS] FunctionLook up measurement result. Remarks 1).Gas 1 concentration = DF1*256+ DF2/ (corresponding multiple) 2).[ST] means status of system, which give the information of working status of it. For example: to check whether it need zeroing, sampling signal is correct, users options. 2. Look up voltage result Send11 02 02 [TVM] EB Response[ACK] 0A 02 [TVM] [FV1] [FV2] [FV3] [FV4] (refVpp) (testVpp) [CS] FunctionLook up voltage result. Remarks 1). [TVM] gas measurement voltage. 2). [FV1] [FV2] [FV3]...

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infrared methane sensor SJH series User Manual - 11

Remark 1. Reset users calibration data to factory calibration data 2. [GasNum] means indicator bit of gas calibration. 6. Software version check Send11 01 1E D0 Response [ACK] 0C 1E [CH1] [CH2] [CH3] [CH4] [CH5] [CH6] [CH7] [CH8][CH9][CH10][CH11][CH12] [CS] Function to check software version Remark [CHx] is ASCLL II code. 7. Series number check Send11 01 1F CF ResponseACK] 0B 1FSN1 SN2 SN3 SN4 SN5[CS] Function to check the series number of the bench Remark SNn is from 0-9999, five integer consists of 20 bits series number 8. Gas measurement property Check Send11 01 0D [CS] Response[ACK] 06...

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infrared methane sensor SJH series User Manual - 12

ADD Fenghuang No.3 Road, Fenghuang Industrial Park, Eastlake Hi-tech Development Zone, Wuhan 430205, China FAX86-27-87401159 Http://www.gassensor.com.cn E-mail:info@gassensor.com.cn INFRARED METHANE SENSOR | cubic

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