Detection gas Working principle Measuring range C3H8 Non-distributed infrared (NDIR) 0-100%LEL Linear error ◆ Resolution ◆ Repeatability ◆ Operating temperature ◆ Storage temperature ◆ Ambient humidity ◆ Preheating time Digital output Analog output ◆ Supply voltage ◆ Driving current ◆ Power consumption Positive electrode of power supply Negative terminal of power supply Serial port transmitter Serial port receiver Analog output 3.3 ~ 5.5 VDC Average < 70 mA @ 3 VDC Peak value < 140 mA @ 3 VDC 0.23W (Average value) 3.0 - 5.5 VDC Ground terminal TTL level, 0 ~ 2.5V Compatible with 1.8 ~ 5V input 0 - 0.24V is sensor failure 0.24 - 0.4V is negative concentration (negative drift) 0.4-2V corresponds to 0-100% F.S. > 2.0V indicates overrange Ningxia MaiYa Sensor Technology Development Co., LTD Address: Tower C, Yinchuan Zhongguancun Innovation Center, Helanshan Road, Xingzhou Street, Yinchuan, Ningxia, China750000 E: [email protected]/ [email protected] T: +86 189 9527 8133 / +86 182 0276 0413 Whatsapp: +86 18202760413 Http://www