Fixed Gas Detector & Monitor

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com Before installing, operating, and maintaining the device, read the technical manuals carefully. Pay special attention to warnings and cautions. The installation process and operation must strictly comply with the relevant national recognized standards and requirements. Any operation inside the monitor must be performed by a professional. Before opening the monitor housing, the power must be disconnected to reduce the risk of ignition by dangerous gases. Do not open the junction box/housing...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com Remind statement The following warnings are mentioned throughout the manual. Warning: Be aware of any danger or insecurity that may result in a serious accident or injury. Note: Be aware of any hazards or unsafe hazards that may result in personal injury or damage to products or property. Remarks: Useful/additional information. Please contact us for any information that is not mentioned in this information, or that needs to be added or corrected. The Company reserves the right to...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com 1.Product overview This equipment can be used in the national provisions of zone 1 dangerous place. The monitor can use the following sensors, resulting in five different types of monitors:  Combustible gas（ LEL） Other harmful gases（ ppm） Users can know the monitor type from the label content in the display window. Regardless of the sensor used, it is very easy to replace. The type of monitor can be distinguished according to the label on the upper part of the enclosure. The above...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com 2.Product technical index and structure 2.1 Technical Specifications Measurement principle(sensors): electrochemistry, catalytic combustion, infrared, photoion ( PID), semiconductor； Response time： Combustible gas less than 30S (T90)； Adsorbent gas (ammonia, chlorine, etc.) less than 40S (T90); Other toxic gas less than 20S (T90); Remarks： T9 0 represents the time to reach 90 % of the final reading； Explosion- Proof： Exd IICT6 ( flame- proof type) ； IP grade： IP65； Working Temperature：...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com Structure diagram of the monitor The monitor is composed of a shell, a sensor kit and a mounting bracket. The shell is mainly composed of a surface shell, a bottom shell and an O-seal ring and cable into the hole assembly, the shell plays the role of flameproof and protection. The sensor kit consists of a gas sensitive sensor and a protective cover (see the monitor structure diagram).

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com Internal Structure The monitor is composed of the monitor mainboard, monitor setting board, monitor display (optional) and other parts.

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com Attentions The monitor has a certificate of quality; The most common causes of the signal drift are the formation of ground loops and poor shielding. Use appropriate grounding technology to improve resistance to EMI interference. When selecting the installation location, pay attention to the following： ●When the gas being measured is lighter than air (e.g., Methane), the monitor should be installed at a high position. Preferably with a collecting hood. ●When the gas being measured...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com The installation can be wall mounted or duct mounted. ● Wall installation: first use the impact drill (hammer) in the wall to drill the corresponding size of the hole, Then put the bolt, tube expansion into the hole, screw the nut can make the bolt, tube expansion, monitor and wall between the expansion become a whole. ● Pipe installation: THE fixed pipe is SANDWIChed between the SPLint and the fixed plate, and the hole on the fixed plate corresponds to the two holes on the lower...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com Cable Connection Rotate the upper cover of the monitor clockwise, open the upper cover and pull out the display panel (optional). At this time, the main board of the gas monitor can be seen (see the internal structure diagram in Section 2.5). The green pluggable terminal on the left side of the mainboard is the terminal block for power supply and signal transmission. The green pluggable terminal on the right of the mainboard is the linkage terminal block, which is used to connect...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com DC power supply; S is the positive pole of the 4-20mA signal; The negative terminal of the 4-20mA signal is in common with the common end of the power supply. When connected with a third party control system (PLC or DCS), sometimes there are only S+, S- two terminals on the device. In this case, connect the V+ of the power supply to the V terminal of the monitor, connect the V- of the power supply to the G terminal of the monitor in parallel with the S- of the device, and connect...

Ningxia MaiYa Sensor Technology Development Co., LTD E: [email protected] Web: https://www.maiya-sensor.com cross sectional area The RS48 5 bus version uses a 4- core cable. Where, V is the DC 24 V positive pole of the power supply; G is the common end of the power supply or the negative pole of the DC power supply; A is the positive terminal of the RS485 signal. B indicates the negative terminal of the RS485 signal. When debugging the RS485 bus version, pay special attention to the connection mode of multiple monitors and the cable resistance. RS485 bus should be connected hand in hand...