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High Performance Toxic Gas Sensor Industrial Gas Detector 4-20mA, Hart, RS485-RTU Output
US$340.00
5-49 Pieces
US$315.00
50-199 Pieces
US$285.00
200+ Pieces
Product profile
Customization
AvailableBrand
Hanwei ElectronicsCustomized
CustomizedModel NO.
GTQ-WD2200Portable
Non PortableCertification
RoHSGas
H2SType
Fixed Gas DetectorMeasuring Gas
Combustible Gas, Toxic GasSample Method
Diffuse NaturallyPower
DC24V±6V, ≤3.6WResponse Time
Lel: T90≤15s Toxic Gas: T90≤30sElectrical Output
4-20mA, Hart, RS485-RTURelays
for 1st Alarm, 2ND Alarm, Fault ; Spst Contacts RaOperation by
Magnetic Bar or IR Remote ControlState Indication
Yellow--Fault, Red--Alarm, Green--PowerOperating Temperature
Lel: -40~70℃ Toxic: -20~50℃Humidity
≤95%Rh (No Condensation)Ambient Pressure
86kpa~106kpaEx Grade
Ex D Iic T6 GB / Ex Td A21 IP67 T80℃Ingress Protection
IP67Enclosure Material
Stainless SteelDimensions
130mm X 209mm X 116mmTransport Package
CartonOrigin
China MainlandProduction Capacity
100000pieces/YearKey features
High Accuracy & Stability: Features high-performance sensor with good repeatability and long lifespan.
Multiple Output Options: Supports 4-20mA analog, RS485-RTU digital, and HART output for versatile integration.
Triple Relay Protection: Includes 3 relay outputs for 1st alarm, 2nd alarm, and fault status indication.
Non-Contact Operation: Enables remote control via magnetic bar or infrared remote without direct contact.
Smart Sensor Module: Free of calibration required, designed for easy maintenance and long service life.
IP67 Ingress Protection: Stainless steel enclosure ensures dust and water resistance for harsh environments.
Optional Bluetooth Upgrade: Supports remote firmware upgrades via Bluetooth communication for flexibility.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service AvailableExport Year: 2008-02-05 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤0.01h CertifiedTerms of Payment: LC, T/T, D/P, etc.
AI-Powered supplier vetting
SummaryHANWEI ELECTRONICS GROUP CORPORATION is a China-based public company headquartered in Zhengzhou, Henan, established in 1998, with 657 employees. It specializes in gas sensors, gas detectors, alarms, meters, and related products, and supplies CO2 and NH3 gas-analysis equipment. The supplier reports ISO9001:2015 and ISO14001:2015 certifications, six production lines, 235 years of combined R&D-engineer experience, and gas-detector output of 50,000 pieces. It serves domestic and international markets and states that OEM and ODM orders are welcome. Evidence supports established manufacturing, product specialization, certification, and customization potential. However, the provided information does not sufficiently establish after-sales performance, financial credibility, or documented customer cases. Export-sales share is stated as 1%–10%, while trade evidence includes one transaction associated with a buyer in Uzbekistan.
Supplier typeThe supplier is identified as a public company from China, established in 1998, with 657 employees and a product portfolio centered on industrial and domestic gas detection, gas alarms, sensors, meters, and breathalyzers. Its stated specialization in gas-sensor and gas-detector R&D and mass production supports classification as a specialized manufacturer rather than a general trading company.
CertificationsThe supplier explicitly reports ISO9001:2015 and ISO14001:2015 management-system certificates. It also states that some products are for CE and TUV approval, but the slices do not confirm that all relevant products hold those approvals.
R&D capabilityInnovation capability is supported by the supplier's stated focus on developing and manufacturing its own gas sensors, its gas-detection R&D specialization, and 235 years of total R&D-engineer experience. Its product range includes portable, fixed, smart, combustible-gas, carbon-monoxide, and system-level detection products.
Production capacityThe supplier reports 657 employees, six production lines, and annual gas-detector productivity of 50,000 pieces. It also states a one-month off-peak lead time and peak-season fulfillment within 15 working days, providing explicit evidence of organized production capacity and stated delivery capability.
Customization capabilityThe supplier explicitly welcomes OEM and ODM orders and states that it can provide technical service and design projects to meet local customer requirements. This directly supports customization capability, although the slices do not specify minimum order quantities, engineering workflow, or customization limits.
Product Q&A
Q:Why choose your company?
A:
We are a professional manufacturer with seasoned engineers having 20 years of experience in gas detection, offering top quality at the best prices.
Q:Can I order a sample?
A:
Sample orders for testing are welcomed at the first time.
Q:What certifications do you have?
A:
We hold CE, EN, BSI, UL, ISO, and other certifications.
Q:How do I get price information?
A:
Sales representatives provide detailed price information within 1 workday after receiving your inquiry.
Q:What is the best price for large quantities?
A:
Please send a detailed enquiry including model number, quantity, quality requirements, logo, and payment terms for an accurate quotation.
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HANWEI ELECTRONICS GROUP CORPORATION
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