Aq-2019fixed Combustible Gas Alarm Detector Ethylene Oxide Gas Detector with Sound Light Alarm - China Gas Alarm, Combustible
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Product Highlights
- Explosion-Proof Design: Shell designed for hazardous areas with Ex d IIC T6 Gb explosion-proof level.
- Multi-Communication Support: Supports 4G wireless, 4-20mA, RS485, and relay outputs for flexible integration.
- Remote & Local Configuration: Allows parameter configuration and firmware upgrades via local Bluetooth or remote platform.
- Two-Level Alarm Output: Automatically triggers fans and solenoid valves with low (25% LEL) and high (50% LEL) limits.
- Wide Gas Detection Range: Detects over 30 types of combustible gases with a measuring range of (3~100)%LEL.
- Durable Material Construction: Constructed with aluminum alloy shell and 304 stainless steel interface for longevity.
- Real-Time LED Display: Features LED digital tube display for real-time gas value and equipment status indication.
- OEM/ODM Customization: Manufacturer offers OEM and ODM services for customized gas detection solutions.
Product Attributes
- Customization
- Available
- After-sales Service
- Free Repair
- Warranty
- 1 Year
- Model NO.
- AQ-2019
- Measuring Range
- (3~100)%Lel
- Type
- LED Digital Tube Display
- Accuracy
- 3%Fs
- Display
- Digital
- Application
- Industrial, Civil
- Structure
- Spring Pressure Gauge
- Connection Type
- Radial Direction
- Function
- Electric Signal-controlled
- Installation Structure
- Fixed,Holding Pole
- Features of Measurement Medium
- General Pressure Gauge
- Indicating Pressure Reference
- General Pressure Gauge
- Detect Gas
- Flammable Gas
- Detection Principle
- Catalytic Combustion Type
- Power Supply
- 24VDC (Normal Operating Voltage Range: (12~28V DC)
- Output Method
- 4G;4~20mA;RS485;Relay (Active/Passive Optional)
- Alarm Reference Point
- The Factory-Set Low-Limit Alarm Value Is 25% Lel a
- Transport Package
- Box
- Specification
- Stainless steel
- Trademark
- NA
- Origin
- China
- HS Code
- 9026209090
- Production Capacity
- 50000piece/Year
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Product Description
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The AQ-2019 combustible gas detection alarm is a functional and practical gas detection terminal. The alarm shell is designed as an explosion-proof shell and can be used in hazardous areas in explosion-proof environments.
There is an LED indicator light on the front of the equipment to indicate the current equipment status and display the value of combustible gas detected by the sensor, making it easy for users to directly adjust the alarm on site.
The product can communicate via 4~20mA, active/passive switching output, or standard RS485; it also supports wireless 4G communication to send data to the platform. It uses local Bluetooth to configure parameters and firmware upgrades for the device. It can also Parameter configuration and firmware upgrade of the device through remote platform.
TECHNICAL CHARACTERISTICS:
1.The numerical value is displayed in real time and the current equipment status is displayed;
2.4-20mA standard signal output, relay output, RS485 communication optional;
3.Support wireless full network 4G communication;
4.Use local Bluetooth parameter configuration and firmware upgrade; support remote platform parameter configuration and firmware upgrade;
5.It has a two-level alarm output function that can automatically turn on the fan and solenoid valve;
6. Modular design for easy wiring and maintenance;
APPLICATION:
Pipe Gallery Gas Transmission and Distribution
metallurgy, refining
Petrochemical
School
Biochemical medicine
SPECIFICATION:
| Detect gas | flammable gas |
| Detection principle | Catalytic combustion type |
| Measuring range | (3~100)%LEL |
| Accuracy | 3%FS |
| Power supply | 24VDC (normal operating voltage range: (12~28V DC) |
| output method | 4G;4~20mA;RS485;Relay (active/passive optional) |
| Alarm reference point | The factory-set low-limit alarm value is 25% LEL and the high-limit alarm value is 50% LEL. |
| Explosion level | Ex d lC T6 Gb |
| shell material | Aluminum alloy |
| Interface material | 304 stainless steel |
| Posting time | 10-1440 minutes can be set (wireless communication) |
| screen display | LED digital tube display |
| Working temperature | (-40~70)°ºC |
| Working environment humidity | (10~95)%RH (non-condensing) |
| Storage environment | Room temperature, normal atmospheric concentration, atmospheric pressure (86~106)KPa |
| product weight | ≤1.35KG |
| appendix | Expansion screws; power adapter (optional); sound and light alarm (optional) |
DIEMENSION:

Wireless 4G communication + sound and light alarm type

4-20mA/RS485/relay output + sound and light alarm
The List of Combustible gas
| AQ-2019List of measurable combustible gases | ||||||
| Code | Name | Molecular formula | Range Code | Range | Low limit alarm point | High limit alarm point |
| K00 | Combustible gas (no sulfur, phosphorus, silicon or other gases on site) | - |
LEL | 100%LEL | 25%LEL | 50%LEL |
| K01 | and gases or volatile liquids containing halogen (fluorine, chlorine, bromine, iodine, astatine) elements) | CH4 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K02 | Methane | C6 H5CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K03 | Toluene | CH3OH | LEL | 100%LEL | 25%LEL | 50%LEL |
| K04 | Methanol | HCOOCH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K05 | Methyl formate | HCOOCH2CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K06 | Ethyl formate | CH3CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K07 | Ethane | CH3CH2OH | LEL | 100%LEL | 25%LEL | 50%LEL |
| K08 | ethanol | CH3CH2C6 H5 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K09 | Ethylbenzene | CH2 =CH2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K10 | Ethylene | CH3COOCH2CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K11 | Ethyl acetate (ethyl acetate) | CH3CH2CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K12 | propane | CH3CH2CH2OH | LEL | 100%LEL | 25%LEL | 50%LEL |
| K13 | Propanol | CH2 =CHCH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K14 | Acrylic | (CH3)2CO | LEL | 100%LEL | 25%LEL | 50%LEL |
| K15 | acetone | C4 H10 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K16 | Butane | CH3CH2COCH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K17 | Butanone (also called methyl ethyl ketone or methyl ethyl ketone) | CH2 =CHCH=CH2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K18 | Butadiene | C5 H12 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K19 | Pentane | CH3(CH2)4CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K20 | Hexane | C7 H16 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K21 | Heptane | CH3(CH2)3CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K22 | n-octane | CH3(CH2)7CH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K23 | Nonane | CO | LEL | 100%LEL | 25%LEL | 50%LEL |
| K24 | carbon monoxide | NH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K25 | Ammonia | H2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K26 | hydrogen | C6 H6 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K27 | benzene | (CH3)2CHCH3 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K28 | Isobutane | (CH3)2CHOH | LEL | 100%LEL | 25%LEL | 50%LEL |
| K29 | Isopropyl alcohol | CH2(CH2)4CH2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K30 | cyclohexane | CH2(CH2)3CH2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K31 | cyclopentane | CH3CHCH2O | LEL | 100%LEL | 25%LEL | 50%LEL |
| K32 | Propylene oxide | CH2CH2O | LEL | 100%LEL | 25%LEL | 50%LEL |
| K33 | Ethylene oxide | (CH3)2O | LEL | 100%LEL | 25%LEL | 50%LEL |
| K34 | dimethyl ether | C6 H4(CH3)2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K35 | xylene | C4~C12hydrocarbon mixture | LEL | 100%LEL | 25%LEL | 50%LEL |
| K36 | gasoline | - | LEL | 100%LEL | 25%LEL | 50%LEL |
| K37 | Jet fuel, kerosene | C6 H5CH=CH2 | LEL | 100%LEL | 25%LEL | 50%LEL |
| K38 | Styrene (monomer) | Methane, ethane, propane, butane, etc. multi-component mixed gaseous fossil fuels | LEL | 100%LEL | 25%LEL | 50%LEL |
| K39 | natural gas | The main ingredients are propane and butane | LEL | 100%LEL | 25%LEL | 50%LEL |









About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASR2141510". Items marked "" are certified.
Company Profile
MEOKON is an instrument manufacturer and IoT sensing solution provider based on digital sensing technology. Focusing on "water atmosphere" safety monitoring in multiple scenarios of smart cities such as smart fire protection, smart water services, building parks, and digital factories, it provides "multiple categories of smart sensing terminals, operation and maintenance services directly to customer sites, and smart equipment health management cloud platforms "Three-dimensional Internet of Things solutions are committed to becoming a reliable provider of IoT sensing solutions for users. <br/><br/>MEOKON always focuses on users and scenarios, providing ultra-low power consumption, multi-sensory fusion IoT sensing terminals, including 110 sensing products for "water atmosphere" safety monitoring. Always create first-class digital instrumentation and IoT terminal solutions for user environment monitoring, digital management, and industrial automation. At the same time, it provides a full life cycle management cloud platform and equipment operation management services based on wireless intelligent terminals. <br/><br/>After 10 years of development, MEOKON has become a leader in wireless intelligent terminals for smart city "water and atmosphere" security monitoring. It has been rated as a Shanghai high-tech enterprise, a national-level specialized special new small giant enterprise, and a Shanghai "technological small enterprise". "Giant Cultivation" enterprise, technology-based small and medium-sized enterprises, and Shanghai urban-level R&D center. The company has passed IS09001 production management system certification and SGS system certification, and has a 0.05 level measuring instrument type certificate. The company has more than 90 independent intellectual property rights, and its products have also passed CE Certification, CPA certification, RoHS certification, Ex explosion-proof and other more than 50 authoritative certifications. <br/><br/>MEOKON's sales footprints cover China, the United States, Europe, Southeast Asia, Japan and South Korea and other countries. A service system has been formed with Shanghai, China as the operation headquarters and manufacturing base, and Chongqing Mingkong, Shenzhen Mingkong, Beijing Mingkong, and Wuhan Mingkong as the operation centers. Dedicated to providing users with more comprehensive and faster wireless intelligent terminals and industry solutions. <br/><br/>Since its establishment in 2013, Meokon has insisted on independent research and development and innovation, and has mastered a number of independent intellectual property rights. Actively explore the development and industry applications of digital instruments and wireless intelligent sensing terminals. Technology exploration and product development in many fields such as pressure, liquid level, temperature, temperature and humidity, flow, water flooding, vibration, noise, water quality, gas, etc. It has formed industry technology leadership with multi-sensor fusion, ultra-low power consumption and in-depth scene edge algorithms. Meokon attaches great importance to the in-depth development of products. Through the optimal design of the product's appearance, embedded software, sensors, digital communications and many other aspects, it is more suitable for customers' industry usage characteristics. Many products are industry firsts and have won the trust of customers. Great recognition.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory
- Address
- Building 8, Hewang Wisdom Valley, No. 3236 Waiqingsong Road, Baihe Town, Qingpu District, Shanghai 201709, Shanghai, China
-
Plant Area
- 2290 square meters
-
Number of Employees
- 96
-
Registered Capital
- 10,000,000 RMB
-
Terms of Payment
- LC, T/T, Western Union
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shanghai ports
Our Production Capability & Technical Expertise
- Main Products
- Digital Pressure Gauge, Digital Pressure Controller, Digital Pressure Switch, Digital Electric Contact Pressure Gauge, Temperature and Humidity Table, Pressure Transmitters, Pressure Sensor, Lever Sensor
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2013-02-16
- Export Year
- 2017-11-01
-
Main Markets
- North America, South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Australia, Domestic
-
Number of Foreign Trading Staff
- 5
-
Overseas Agent/Branch
- No
FAQ
- What communication methods does the AQ-2019 support?
- The device supports wireless 4G communication, 4-20mA standard signal output, RS485 communication, and relay output (active/passive optional).
- Can the device be configured remotely?
- Yes, it supports parameter configuration and firmware upgrades via local Bluetooth as well as through a remote platform.
- What is the alarm reference point setting?
- The factory-set low-limit alarm value is 25% LEL, and the high-limit alarm value is 50% LEL.
- Is the device suitable for hazardous environments?
- Yes, the shell is designed as an explosion-proof shell with an explosion level of Ex d IIC T6 Gb, suitable for hazardous areas.
- What is the warranty period for this product?
- We provide a 1-year warranty with free repair after-sales service.
- What types of gases can this detector measure?
- It detects flammable gases including methane, ethylene oxide, propane, butane, natural gas, and many other combustible hydrocarbons.
- What are the power supply requirements?
- The device uses 24VDC power supply, with a normal operating voltage range of 12~28V DC.
- Does the manufacturer offer OEM services?
- Yes, the manufacturer provides both OEM and ODM services for customized gas detection products.
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