Visual Concentration Display with High/Low Alarm Setpoints Combustible Gas Detector
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Product Highlights
- Real-time Gas Monitoring: Visual display of concentration with infrared remote control for on-site operation.
- Dual Communication Support: Compatible with HBUS four-wire and 3-wire 4-20mA current signal for data transmission.
- Fast Response Time: Response time is less than or equal to 30 seconds for immediate alarm triggering.
- Robust Explosion-proof Design: Rated Ex d II C T6 Gb and IP66 protection for safe operation in hazardous environments.
- Comprehensive Warranty: Includes 12 months warranty coverage for all mechanical and functional defects.
- 24/7 Online Support: Engineers available around the clock for technical assistance and troubleshooting.
- Factory Direct Manufacturing: Over 15 years of experience in gas detector manufacturing with 40 R&D engineers.
- Full Customization Options: Supports OEM/ODM services, logo printing, and flexible customization from designs.
Product Attributes
- Customization
- Available
- After-sales Service
- 7/24 Online Service
- Warranty
- 1 Year
- Model NO.
- GTQ-TC03
- Style
- Detector
- Alarm Form
- Audible Alarm
- Certification
- CE, ISO, RoHS
- Application
- Museum, Prison, Pier, Station, Hotel
- Sampling Method
- Diffusion
- Rated Voltage
- DC 24V
- Detection Range
- 3 - 100% Lel
- Response Time
- ≤30s
- Transport Package
- Carton
- Specification
- 1.6kg
- Trademark
- zehong
- Origin
- China
- Package Size
- 27.00cm * 30.00cm * 14.00cm
- Package Gross Weight
- 2.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
Product Images of Visual Concentration Display with High/Low Alarm Setpoints Combustible Gas Detector
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Product Description

This detector is primarily used for monitoring and alarming combustible gases in industrial/commercial environments. Itfeatures a display function for real-time visualization of detectedgas concentration. An included infrared remote control allows for operation of the on-site detector. When connected to acompatible controller, it transmits concentration data to thecontroller in real time. The detector supports both HBUSfour-wire communication and three-wire 4~20mA current signalcommunication for real-time concentration transmission to the matching controller. It comes with a built-in controllable alarmoutput contact that provides a passive switch signal duringalarms.











Detection Target | Methane, Isobutane, and other combustible gases |
Detection Principle | Catalytic combustion |
Communication Method | HBUS and 4 - 20 mA current |
Sampling Method | Diffusion |
Response Time | ≤30s |
Detection Range | 3 - 100% LEL |
Step Size | 1% LEL |
Rated Voltage | DC24V |
Power consumption | <2W |
Alarm Output | One set of switch output, contact capacity: 1A/DC24V |
Protection Rating | IP66 |
Explosion-proof rating | Ex d II C T6 Gb/Ex tD A21 IP66 T80°C |
Operating Environment | Temperature: (-40 to 70) °C, Humidity: 93% RH (non-condensing), Atmospheric pressure: 86 kPa to 106 kPa |














Re:MOQ:50-500PCS, leading time:7-15 days, also accept customization.
Re:Yes, samples can be available,clients need to afford the freight charge.
Re:Yes. we can. OEM ODM service are welcome.
Re:We focus on gas monitoring and IoT big data, and is a high-tech enterprise integrating R&D, production, and sales. Its business covers the entire industry chain of gas detection, analysis and control systems, as well as IoT big data platforms.
Re:T/T, West Union, Paypal,etc.

About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASI2561012". Items marked "" are certified.
Company Profile
Hebei Zehong Technology Co., Ltd. is located at No. 1, Qinggong Road, Xibaipo Economic Development Zone, Pingshan County, Shijiazhuang City, Hebei Province. It is a high-tech enterprise specializing in the research, development, production, and sales of gas detection and analysis instruments. Leveraging its technological advantages, the company is committed to the development and production of safety and environmental monitoring products, and has established long-term technical cooperation relationships with numerous domestic and international research institutions.
Founded in 2007, the company successfully listed on the National Equities Exchange and Quotations (NEEQ) in 2016 (Company name: Hebei Zehong Technology Co., Ltd.; Stock code: 870443). The company has a registered capital of 33.42 million RMB and an annual output value of 500 million RMB.
The company has obtained ISO9001, ISO14001, and GB/T28001 management system certifications, and possesses a production line capable of producing millions of gas detection instruments annually. It has also obtained national mandatory (CCC) certification, explosion-proof certification, and metrology licenses, and has passed SIL certification, obtained dual-certification certificates, is a member of the American HART Foundation, and holds a high-tech enterprise certificate. Advanced technology, scientific management, and strict production control provide a strong guarantee for high-quality products.
The company's products cover detection and alarm monitoring systems for flammable and toxic gases, various gas analysis instruments, major hazard source monitoring systems, solenoid valves, and self-closing valves. These products are widely used in petroleum, metallurgy, chemical industry, mining, pharmaceuticals, natural gas, municipal engineering, sewage treatment, healthcare, environmental monitoring, and other fields.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Shijiazhuang, Hebei, China
-
Plant Area
- 6989 square meters
-
Number of Employees
- 128
-
Registered Capital
- 33,420,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays, one month
Off Season Lead Time: within 15 workdays, one month -
Nearest Port
- Tianjin Port
-
Minimum Order Quantity
- 1
-
Supply Chain Partners
- 10
Our Production Capability & Technical Expertise
-
Main Products
- Gas Detector, Gas Leak Detector, Gas Alarm Detector, Gas Alarm, Multi Gas Detector, Portable Gas Detector, Fixed Gas Detector, Industrial Gas Detector, Gas Monitor, Toxic Gas Detector, Gas Leak Alarm
-
Production Lines
- 2
-
Production Machines
- SMT machine
-
QA/QC inspectors
- 8 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Full Customization, Customization from Designs, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 40 people
-
Traceability of Raw Materials
- Yes
-
Test Reports for Raw Materials
- Others
-
Own Brand
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2007-12-17
-
Export Year
- 5 years
-
Main Markets
- Domestic
-
Repeat Buyers Choice
- 50%~80%
-
Number of Foreign Trading Staff
- 6
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- Yes
Our Certifications, Standards & Industry Recognition
-
Management System Certification
- ISO9001:2015, ISO45001:2018, ISO14001
-
Product Certification
- CCC, CE, Others
-
Cooperated with Fortune 500
- Yes
FAQ
- Are you a factory or a trading company?
- Factory, more than 15 years experience in gas detector manufacturing.
- What is your MOQ and the leading time?
- MOQ:50-500PCS, leading time:7-15 days, also accept customization.
- Can we buy some samples for testing?
- Yes, samples can be available,clients need to afford the freight charge.
- Can we put our logo or designs on your package?
- Yes. we can. OEM ODM service are welcome.
- Why should we choose you?
- We focus on gas monitoring and IoT big data, and is a high-tech enterprise integrating R&D, production, and sales. Its business covers the entire industry chain of gas detection, analysis and control systems, as well as IoT big data platforms.
- What is your payment terms in your company?
- T/T, West Union, Paypal,etc.
- What about after-sale service?
- 12 months warranty .
- DO YOU HAVE CERTIFICATE OF CALIBRATION?
- Certainly, each product get calibration before out of our factory.
Send your message to this supplier
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