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Zhengzhou Winsen Electronics Technology Co., Ltd
www.winsentech.com
MD62 Thermal Conductor Gas Sensor
（Model：MD62）
User's Manual
Version: 1.6
Valid from: 2022-06-21
Zhengzhou Winsen Electronics Technology Co., Ltd
Tel: 86-371-67169097
Fax: 86-371-60932988
Email:
sales@winsensor.com
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Summary of Contents for Winsen MD62
- Page 1 Zhengzhou Winsen Electronics Technology Co., Ltd www.winsentech.com MD62 Thermal Conductor Gas Sensor （Model：MD62） User’s Manual Version: 1.6 Valid from: 2022-06-21 Zhengzhou Winsen Electronics Technology Co., Ltd Tel: 86-371-67169097 Fax: 86-371-60932988 Email: sales@winsensor.com...
- Page 2 Statement This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways.
- Page 3 Thermal Conductor CO Gas Sensor MD62 gas sensor consists of an active element and a reference element with the same resistance, both elements are placed in a wheatstone bridge circuit, The analyzing gas contents changes, the overall thermal coefficient of mixed gases changed correspondingly;...
- Page 4 Zhengzhou Winsen Electronics Technology Co., Ltd www.winsentech.com Sensitivity and response characteristic Output signal dependency on working voltage In air Long term stability The absolute value of the drift in air is less than 2 mV per year, in 30%CO2 the absolute value of drift is less than 2mV.
- Page 5 Zhengzhou Winsen Electronics Technology Co., Ltd www.winsentech.com Cautions 1 .Following conditions must be prohibited 1.1 High Corrosive gas If the sensors are exposed to high concentration corrosive gas (such as H S, SO , Cl , HCl etc.), it will not only result in corrosion of sensors structure, also it cause sincere sensitivity attenuation.
- Page 6 Zhengzhou Winsen Electronics Technology Co., Ltd www.winsentech.com 2.7 Usage Conditions 2.7.1For sensor, handmade welding is optimal way. The welding conditions as follow: Soldering flux: Rosin soldering flux contains least chlorine homothermal soldering iron Temperature： 250℃ Time：less than 3 seconds 2.7.2 If users choose wave-soldering, the following conditions should be obey:...
- Page 7 Zhengzhou Winsen Electronics Technology Co., Ltd www.winsentech.com the volume of the box. g. The components are installed in the test chamber in the same posture in the horizontal direction. Changing the posture will produce different thermal convection. 2. Gas concentration adjustment: The gas concentration in the box is adjusted by volume method, which can be calculated by the following formula: V(ml)=V1×C×10-6 ×(273+TR)/(273+TC)
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