AIYI Technologies AG200 Fixed Gas Detector Instruction Manual

AE’S GTQ-Anr-A GTQ-Anr-D AG210 AG211 gas detectors are suitable for detecting the content of combustible and toxic gases such as combustible gas, oxygen, and toxic gases in explosion hazard areas. The product adopts the integrated design of sound and light alarms, which can effectively warn of various gas leakage hazards; modular design, and easy maintenance; with infrared remote control, can be achieved without open cover operation. IP66 protection class.

Features

Use high-performance sensors, quick response, safer and more reliable.
Stainless steel + aluminum alloy material, the protection level of the whole table reaches IP66, which is suitable for harsh working conditions.
High-brightness display, LED status indicator, display rich information.
Built-in low-report, high-report, and fault three switches, which can realize multi-level interlocking.
Infrared remote control operation, no need to open the cover on site.
Standard electrical interface, support external sound and light alarm.
A variety of signals are available to support the different needs of customers.

The design, manufacture, and verification of this product follow or refer to the following national standards:

GB15322.1-2019 “Combustible Gas Detector Part 1: Point-type Combustible Gas Detector for Industrial and Commercial.

Use

GB 3836.1-2010 “Explosive Atmosphere Part 1: General Requirements for Equipment”
GB 3836.2-2010 “Explosive Atmosphere Part 2: Equipment Protected by Flameproof Enclosure “d”
GB 3836.4-2010 “Explosive Atmosphere Part 4: Equipment Protected by Intrinsic Safety Type “i”
GB/T 50493-2019 Code for Design of Detection and Alarm of Combustible Gas and Toxic Gas in Petrochemical.

Industry

GB 12358-2006 “General Technical Requirements for Gas Detector and Alarm in Working Environment”
GB 16838-2005 “Environmental Test Methods and Severity Levels of Fire Electronic Products”
GB/T 4208-2017 “Enclosure protection class (IP code)”
GBZ 2.1-2007 “Occupational Exposure Limits for Hazardous Factors in the Workplace Part 1: Chemical Hazardous

Factors

JJG365-2008 “Electrochemical Oxygen Analyzer”
JJG 693-2011 “Combustible gas detection alarm”
JJG 915-2008 “Carbon Monoxide Detection Alarm”
JJG 695-2003 “Hydrogen Sulfide Gas Detector”
JJG 551-2003 “Sulfur Dioxide Gas Detector”

Appearance structure

Ex-proof adapter
Ground screw
Base mounting hole
Nameplate
Screen
Sensor housing

Screen and indicator

Infrared Receive infrared remote signal
Power Normal on, the green light is off
Fault Normally off, yellow light is
Alarm1 Normally off, and the red light is always on when the alarm-1
Alarm2 Normally off, the red light is always on when the alarm-2

Task

Status

Display

Unit

Remote control

Gas detector dimensions(mm)

Dimensions of gas detector with GARY sound-light alarm (mm)

Note:

This means it has this function,-which means it does not have this function.
- Refer to attached table 1 for detailed detection gas.
- Different gases will be different, and their response time, error, and repeatability are different. The data in the above table is for reference only. Please consult the manufacturer for details.

Installation

Packing list
Please check and count the goods before installation to confirm that the appearance of the packing box is complete. After unpacking, check the installation accessories and check whether they are complete. If there is any loss, please contact our company as soon as possible. Items not included in the packing list may be used during the installation process, please purchase by yourself. Under normal circumstances, the gas detection transmitter contains the following products and accessories:

Installation cautions

Before the detector is installed, it should be inspected in detail whether the explosion-proof mark conforms to the environment of the explosive gas mixture and whether there is an obvious crack in the appearance to ensure the explosion-proof performance of the product.
When applied to the field of fire type approval, the gas detector should be connected to the corresponding controller, and it is forbidden to connect with other brands and models. The controller must be installed in a non-hazardous area.
Please keep the power off state during the installation and wiring process to ensure that there is no flammable gas in the environment and that the temperature and humidity of the use environment meet the working requirements of the detector.
The detector is designed for gas detection in the environment and should not be used on pipelines or for other purposes.
The detector must be installed so that the sensor is down and the sensor cover must not be blocked or painted.
The installation and wiring of the detector should be as far away as possible from high-power equipment.
In an oxygen-deficient atmosphere, the catalytic combustion type sensor may be lower than the actual reading. When the oxygen concentration is lower than 10%vol, the instrument will not work properly.
The long-term presence of H2S, halogen elements (fluorine, chlorine, bromine, iodine), heavy metals, organic solvents, and acid gases in the environment may distort the test results and need periodic inspection or calibration.
Be careful not to touch the internal circuit when wiring and the instrument case should be grounded.

The installation, use and maintenance of the product shall comply with the instruction manual and the “Electrical Equipment for Explosive Gas Atmosphere” (GB3836.13-2013) Part 13: Inspection and Repair of Electrical Equipment for Explosive Gas Environment, “Electrical Equipment for Explosive Gas Environment” ( GB3836.15-2017) Part 15: “Electrical installation in hazardous areas (except for coal mines), “Electrical equipment for explosive gas atmospheres” (GB3836.16-2017) Part 16: Inspection and maintenance of electrical installations (excluding coal mines) and Relevant regulations on “Construction and Acceptance Specifications for Electrical Equipment Installation Engineering Explosion and Fire Hazardous Environment Electrical Installations” (GB50257-2017).

Installation Preparation

Complete gas detector assembly, mounting accessories
Screwdriver, multi-meter (if needed), etc.
Power and cable

The standard working power supply of the detector is 24VDC. Given the voltage drop caused by the cable resistance, ensure that the detector supply voltage is not less than 18VDC. If directly connected to the DCS or PLC system, please ensure that the power supply of the detector and its entire loop resistance should be ≤300Ω. In the case that the voltage cannot meet the minimum working voltage of the detector, it is necessary to install equipment such as a repeater and explosion-proof box.
The detector and the controller are connected by shielded cables and different cables should be selected depending on the operating conditions. Cable laying should pay attention to the different wiring methods of the bus system and the branching system; it should comply with the national and industrial specifications of the “Electrical Safety Regulations for Explosive Hazardous Locations of the People’s Republic of China”; the wiring should be avoided in parallel with the power cable, and the interference affects the communication. The recommended cable is as follows:

For long-distance transmission, replace the cable or install a repeater or other device according to the actual situation.

Location selection
The location of the gas transmitter is critical to achieving the best results. When determining the location, it is recommended to consider the following factors:

The design drawings and the “Code for Design of Detection and Alarm of Combustible Gas and Toxic Gases in Petrochemical Enterprises” (GB50493-2009) shall be followed.
The detector should be installed at a position where the gas flow is at the maximum concentration or as close as possible to the source of the gas leak.
When installing indoors, if the leak source is outdoors, the detector should be installed at the air inlet.
The source of gas leakage that is lighter than air is in a closed or semi-enclosed plant. The detector should be placed above the source of the leak and at the highest point in the plant where it is prone to build up.
Installation height selection: When it is heavier than air: the height of the detector should be higher than the floor (floor surface) by 0.3-0.6m; when it is lighter than air; the height of the detector should be 0.5-2m higher than the leakage source; when it is close to the air specific gravity: change The height of the detector installation is within 1 m of the source of the leak.
The detector should be installed in a place where there is no wind, no dust, no water, no impact, no vibration, no corrosion, and no electromagnetic interference.

Installation

Please refer to 2.2 Installation Precautions for product installation.
Connect the detector to the mounting base AB hole with the M5 screw (included in the kit).
This product can be installed on a wall or riser.
Wall Mounting: Secure the detector to the wall with four 6mm expansion tubes and self-tapping screws (included in the kit) by mounting the base CEEF hole.

Standpipe installation: Use the U-shaped clamp in the accessories to fix it on the cylinder or pipe (suitable for DN30-65mm) through the G H hole of the installation base plate.

Wiring

Installation accessories size(mm)

Installation Diagram

Unscrew the upper cover of the transmitter counterclockwise.
Unscrew the fixing screws on both sides of the display module, buckle the upper and lower recessed parts of the panel with your fingers, and slowly pull out the circuit module upwards. Note that there is a cable link between the circuit module and the sensor, and do not use violence to operate.
Strip the cable to the required size, and unscrew the adapter, metal gasket, and rubber sealing ring of the transmitter wiring port in turn. The cable passes through the above parts one by one and then into the inside of the transmitter cavity. After adjusting the cable, tighten the compression nut to compress the cable tightly.
Use cold-pressed terminals for crimping at all wiring parts to avoid short circuits, bifurcation, or falling off of wire ends.
Connect the cables firmly according to the markings of the wiring terminals.
Ground the grounding screw of the enclosure by the regulations, and the grounding point should be prepared for corrosion protection.
Be sure to tighten the upper cover after the wiring is completed.

Wiring

Terminals

Grounded

Power-on test

The first power-on should be stable for not less than 20 minutes. After the power is turned on, the detector may have an alarm phenomenon. This is determined by the characteristics of the sensor itself. After waiting for the preheat/polarization, the detector will automatically return to normal value and work. In the normal working mode, the detector will display the measured gas concentration value in real-time and transmit the corresponding 4~20mA or RS485 signal.
Before the system is powered on, you should verify that the wiring and installation are correct.
Due to the nature of the sensor, the detector needs to be warmed up/polarized for some time before it can work properly. Sensors with different principles usually have different warm-up times.

Operation and Maintenance

Power on
After power-on, the monitor light on the transmitter panel is always on, and the screen displays the self-check, version number, and countdown (warm-up) 45s before entering the main interface.

Main menu

The transmitter is equipped with an infrared remote control for operation. The operation should make the infrared transmitting end of the remote control aim at the infrared receiving window on the transmitter panel.

Press the “OK” key to enter, enter the password (four “OK” keys), and then enter the main menu (automatically return to the main interface if there is an operation error). The main menu includes 7 options including low alarm, high alarm, zero calibration, range calibration, 485 address setting, factory setting, and save and exit. Press the “Up” and “Down” keys to select, and press “Exit” to exit without saving.

Alarm setting

Enter the alarm setting menu. At this time, the screen displays the current alarm value. Press the “Up” and “Down” keys to adjust the value, and press the “Left” and “Right” keys to adjust the number of digits. After setting, press “OK” to save and return to the previous menu.

Note that oxygen is higher than the high alarm, lower than the low alarm, and other poisonous gases and combustible gases are higher than the alarm value.

Calibration preparation

Prepare before calibration: zero standard gas, span standard gas, calibration regulator (including flow meter), matching calibration adaptor, and calibration hose.
Connect the calibration gas cylinder, calibration regulator, hose, and calibration adaptor, open the regulator, and pass the gas to the gas detector. Then do a calibrate operation after the stable readings.

Zero calibration

In order to ensure accuracy, it is recommended to use pure nitrogen for zero calibration.
Slowly open the gas cylinder valve, adjust the flow meter knob to 0.5L/min, ventilate and wait for a stable reading, and start calibration.
Enter the zero point calibration menu, and press the “OK” key to calibrate, if the test is successful, it will display √ and then return to the previous menu with the “SAVE” option; if it displays ×, it means the calibration failed.
After entering the zero calibration menu, you can select “SAVE” to save the data and back to the home menu. Or press the “BACK” key to exit without saving. At this time, the screen displays × and returns to the previous menu.
The above operation is recommended to be repeated 3 times to ensure the stability of the instrument.

Span calibration

For different gases, the corresponding concentration standard gas should be selected. For details, please refer to Appendix 3.
Slowly open the gas cylinder valve, adjust the flow meter knob to 0.5L/min, ventilate and wait for a stable reading, and start calibration.
Enter the span calibration menu, the current calibration value is displayed on the screen at this time, press the “up” and “down” keys to adjust the value, and press the “left” and “right” keys to adjust the number of digits. Set the value to the corresponding ventilation concentration and press the “OK” button to calibrate. If the test is successful, it will display √ and return to the previous menu; if it displays ×, it means the calibration has failed.
After entering the zero calibration menu, you can select “SAVE” to save the data and back to the home menu. Or press the “BACK” key to exit without saving. At this time, the screen displays × and returns to the previous menu.
The above operation is recommended to be repeated 3 times to ensure the stability of the instrument.

485 address setting

Enter the 485 address setting menu. At this time, the screen displays the current transmitter’s 485 address. Press the “up” and “down” keys to adjust the value, and press the “left” and “right” keys to adjust the number of digits. After setting, press “OK” to save and return to the previous menu.
This function item is only valid for the transmitter with RS485 signal output, please do not set the 4-20mA gas detector.

Factory setting

Press the “OK” key to enter, enter the password (four “up” keys), and then enter the factory setting menu (automatically return to the main menu if an operation error occurs). The factory setting includes 6 options including decimal point, unit, range, 4mA correction, 20mA correction, and return. Press the “Up” and “Down” keys to select, and press “Exit” to exit without saving.
Change the transmitter parameters to professional parameter settings. Improper operation is very likely to cause the meter to fail to work normally. It is not recommended that the user modify it by himself. Please contact the manufacturer if you need to modify it.

4mA/20mA current correction

When the output signal of the 4-20mA transmitter does not match the actual concentration, it can be adjusted in the current correction option.
Connect the multimeter to the transmitter S and G terminals respectively
Enter the 4mA current calibration menu, check the current value on the multimeter, and press the “up” key or “down” key to adjust the output current until the multimeter value is displayed as 4mA after the setting is completed, press the “OK” key to save and return to the previous menu.
20mA current correction operation is the same as the 4mA current correction operation.

Save and Exit

After all settings are completed, select Save in the main menu and press “OK” to save and exit.

Maintenance

In order to ensure the performance of the transmitter, calibration should be carried out regularly. The calibration frequency depends on the specific working conditions. It is recommended to calibrate the transmitter every 3 months. The calibration record should be filled in each calibration (refer to Schedule 5). For factors such as high-concentration impact and corrosive gas, it is necessary to shorten the calibration period. In either case, the calibration period must not exceed one year.
It is strictly forbidden to use high-concentration gas impact sensors (such as using a lighter) in daily use, otherwise the sensor will be seriously damaged.
Care should be taken to keep the transmitter clean during maintenance. If the sensor cover is clogged, the detection sensitivity may be degraded or even damaged.
Maintenance of the operation, calibration, etc. of the transmitter should be performed by qualified personnel.
When the sensor’s service life arrives, it should be replaced in time. The replacement of the sensor should be carried out under the guidance of the manufacturer or returned to the factory for replacement. When replacing it yourself, be sure to remove the sensor module plug on the main board and replace it. Otherwise, the cable will be damaged easily.
The maintenance of the instrument and the replacement of the components must use the accessories provided by the company. The use of non-company replacement parts may affect the performance and safety of the instrument itself.
For faults encountered in routine maintenance, please refer to Table 4: Trouble Shooting. For those still unable to handle it, please contact the manufacturer in time.

Chapter IV Attached Table

Appendix 1: Gas detector selection table

Appendix 2: VOC gas selection table

Appendix 3: Recommended Calibration gas table

Note: Due to the inevitable error in the concentration of the standard gas, the above concentration values are for reference only. For gases and special ranges not listed in the parameter table, please consult the manufacturer directly.

Appendix 4: Troubleshooting

Nanjing AIYI Technologies Co., Ltd.
Address: Building 13, No. 1318 Qingshuiting East Road, Jiangning District, Nanjing 210000, Jiangsu, China
Tel: 0086-25-87756351 Fax: 0086-25-87787362
Web: www.aiyitec.com
Email: sales@autequ.com

FAQs

Q: Where can I find the latest product information?
A: You can visit www.aiyitec.com or contact the hotline at 0086-25-87756351 for consultation.

Q: What should I do if I encounter difficulties during installation?
A: Refer to the troubleshooting section in the manual or contact Nanjing AIYI Technologies Co., Ltd. for assistance.

Documents / Resources

AIYI Technologies AG200 Fixed Gas Detector [pdf] Instruction Manual
AG200, AG210, AG200 Fixed Gas Detector, AG200, Fixed Gas Detector, Gas Detector, Detector

References

User Manual

AIYI Technologies AG200 Fixed Gas Detector

Specifications

Product Introduction