High-Quality AT0602 Explosion Proof Oxgen / Toxic / VOC Gas Detector Suppliers, Manufacturers

Product Description

The AT0602 is a versatile multi-gas explosion-proof detector specially developed for monitoring oxygen concentration, toxic gases and VOCs in hazardous industrial environments. Unlike conventional combustible gas detectors, it focuses on non-flammable hazardous gas monitoring, covering a wider range of industrial safety demands. It adopts an independent AC220V power supply design, enabling standalone stable operation without an additional control unit, suitable for decentralized monitoring in various working scenarios.

Infrared remote control is supported for non-intrusive debugging, allowing safe and convenient parameter configuration without disassembling the equipment. The digital sensor assembly supports plug-and-play replacement, requiring no on-site calibration after replacement, which greatly improves maintenance efficiency.

With an IP66 protection grade, it is resistant to dust and water intrusion, ensuring stable performance in harsh industrial environments. It is equipped with a high-brightness digital tube display for clear real-time data reading. The device supports offline solenoid valve detection, wireless valve connection, automatic power-failure valve shut-off and direct interlock control for industrial valves. It also enables remote centralized monitoring and management through an IoT cloud platform, providing a reliable safety solution for chemical plants, laboratories, waste treatment facilities and other sites with toxic and VOC gas risks.

Explosion-Proof Design

Ex db IIC T6 Gb certified, engineered specifically for hazardous working scenarios.

Plug-and-Play Assembly

Digital sensor modules can be replaced instantly without requiring on-site calibration.

Versatile Valve Interlock

Supports solenoid valve detection, wireless connections, and automatic valve shut-off.

Detector Specification

Specification Option	Details / Parameters
Model	AT0602
Measuring gas	Oxygen / Toxic / VOC gases
Measuring type	Diffusion type
Measuring method	Electrochemical / Infrared / PID / Semiconductor
Measuring Range	Depend on sensor type
Response time	Depend on sensor type
Accuracy	Depend on sensor type
Operation mode display	Normal / High Alarm / Low Alarm / Trouble LED
Measuring value display	Digital tube
Power	AC220V / 50Hz
Alarm signal output	Built-in light and sound alarm
Output signal	Option: 4-20mA / NB-IoT / 4G / 2.4G
Relay output	Two-channel adjustable relay output, AC220V/1A; One-channel DC24V pulse output, DC24V/2A
Conduit connection	Standard: 3xM26x1.5P; Option: FPT3/4', NPT3/4''
Mounting type	Wall/Pole/Ceiling mount
Operating temperature	Infrared: -40°C ~ +70°C Electrochemical: -20°C ~ +50°C PID: -20°C ~ +55°C
Operating humidity	5 to 95% RH (Non-condensing)
Housing Material	Aluminum alloy
Dimensions	157.5(W) x 178.4(H) x 90(D) mm
Explosion Proof	Ex db IIC T6 Gb
Certification	Standard industry certifications

Sensor Specification

Sensor Type	Measuring Gas	Formula	Range	Temp. Range	Lifespan	Response Time
Infrared Type	Combustible gases	/	3-100%LEL	-40 ~ +70℃	60 month	<30sec / 90% scale
	Carbon dioxide	CO₂	0~2%vol	-40 ~ +70℃	60 month	<45sec / 90% scale
	Nitrous oxide	N₂O	0-1000ppm	-40 ~ +70℃	60 month	<45sec / 90% scale
Electrochemical Type	Carbon Monoxide	CO	0-50 ppm	-20 ~ +50℃	24 month	<10sec / 90% scale
	Hydrogen Sulfide	H₂S	0-20ppm	-20 ~ +50℃	24 month	<12sec / 90% scale
	Sulfur dioxide	SO₂	0-20ppm	-20 ~ +50℃	24 month	<10sec / 90% scale
	Ammonia	NH₃	0-100ppm	-20 ~ +50℃	24 month	<50sec / 90% scale
	Oxygen	O₂	0~30%vol	-20 ~ +50℃	24 month	<15sec / 90% scale
	Formaldehyde	CH₂O	0-2ppm	-20 ~ +50℃	24 month	<15sec / 90% scale
	Chlorine	Cl₂	0-5ppm	-20 ~ +50℃	24 month	<25sec / 90% scale
	Bromine	Br₂	0-5ppm	-20 ~ +50℃	24 month	<60sec / 90% scale
	Hydrogen chloride	HCl	0-15ppm	-20 ~ +50℃	24 month	<30sec / 90% scale
	Hydrogen Fluoride	HF	0-7ppm	-20 ~ +50℃	18 month	<30sec / 90% scale
	Hydrogen Bromide	HBr	0-10ppm	-20 ~ +50℃	24 month	<70sec / 90% scale
	Hydrogen Cyanide	HCN	0-3ppm	-20 ~ +50℃	24 month	<10sec / 90% scale
	Nitrogen Dioxide	NO₂	0-20ppm	-20 ~ +50℃	24 month	<20sec / 90% scale
	Nitric oxide	NO	0-20ppm	-20 ~ +50℃	24 month	<30sec / 90% scale
	Silane	SiH₄	0-15ppm	-20 ~ +50℃	24 month	<60sec / 90% scale
	Ethylene oxide	C₂H₄O	0-20ppm	-20 ~ +50℃	24 month	<25sec / 90% scale
	Vinyl chloride	C₂H₃Cl	0-10ppm	-20 ~ +50℃	24 month	<90sec / 90% scale
	Carbon disulfide	CS₂	0-5ppm	-20 ~ +50℃	24 month	/
	Acrylonitrile	C₃H₃N	0-2ppm	-20 ~ +50℃	24 month	<30sec / 90% scale
	Carbonyl chloride (phosgene)	COCl₂	0-1ppm	-20 ~ +50℃	24 month	<30sec / 90% scale
PID Type	Volatile organic compounds	VOCs	0-2000ppm	-40 ~ +60℃	12 month	<5sec / 90% scale
Semiconductor Type	Organic combustible vapors	/	0~2000ppm	-40 ~ +60℃	36 month	/
Semiconductor Type	Freon and halogenated compounds	/	0~2000ppm	-40 ~ +60℃	36 month	/

*The specific range of the PID sensor for detecting different gases needs to be determined according to different situations.

Sensor Features

Semiconductor Type

High Sensitivity: Detects low-concentration gases with noticeable changes in electrical signals.
Fast Response: Rapid alteration of semiconductor electrical conductivity upon gas adsorption enables quick detection.
Broad-Spectrum: Detects most volatile organic compound (VOC) vapors.
Long Lifespan & Cost-Effectiveness: Simple structure, low manufacturing cost, and stable long-term performance, making it suitable for cost-sensitive scenarios.

Infrared (IR) Type

Mature Dual-Compensation Technology: Utilizes non-dispersive infrared (NDIR) with dual detectors (measurement/reference channels) to compensate for environmental interference, enhancing detection accuracy.
High Sensitivity & Stability: Detects gases based on their characteristic absorption of specific infrared wavelengths, unaffected by oxygen concentration.
No Poisoning Risk: No chemical reactions occur, preventing sensor degradation due to gas exposure.
Low Power Consumption: Suitable for long-term continuous monitoring.
Works in Oxygen-Free Environments: Operates without requiring oxygen participation.
Fast Response, Low Maintenance, Long Lifespan: Simple mechanical structure ensures minimal performance decay over time.

Electrochemical Type

High Precision (ppm-Level): Detects extremely low concentrations of toxic gases (typically at ppm-level detection limits).
Linear Output: Concentration and signal exhibit a linear relationship, facilitating quantitative analysis.
High Selectivity: Designed with gas-specific electrode reactions, resisting cross-interference (e.g., CO-dedicated electrodes are minimally affected by hydrogen).
Stable Performance: Minimal long-term drift.

Photoionization (PID) Type

Extremely High Precision (ppb~ppm-Level): Detects extremely low concentrations of VOCs.
Linear Output: Concentration and signal show a linear correlation, enabling precise measurements.
Fast Response: Instantaneous detection of signal changes when UV light excites gas molecules to produce ions.
Broad-Spectrum: Suitable for most volatile organic compounds (VOCs) (e.g., benzene series, halogenated hydrocarbons, alcohols, ketones, etc.).

Frequently Asked Questions

What types of gases can the AT0602 detector monitor?

The AT0602 is highly versatile and specifically developed to monitor non-flammable hazardous gases, including oxygen concentration, toxic gases (such as Carbon Monoxide, Hydrogen Sulfide, Ammonia, etc.), and Volatile Organic Compounds (VOCs) in industrial environments.

Does the AT0602 require an external control unit to function?

No. The AT0602 features an independent AC220V power supply design that enables standalone, stable operation. This setup is ideal for decentralized monitoring across various working environments without needing extra control hardware.

Is on-site calibration required when replacing a sensor?

No, the digital sensor assembly utilizes a plug-and-play design. You can swap out the sensor module directly on-site without needing recalibration, which vastly minimizes downtime and maintenance effort.

How does non-intrusive debugging work on this device?

The AT0602 supports infrared remote control. This allows operators to perform safe and convenient parameter configuration and debugging without opening or disassembling the explosion-proof enclosure, preserving safety in hazardous areas.

What safety mechanisms does the AT0602 support for industrial valves?

The device features comprehensive control interlocks, including support for offline solenoid valve detection, wireless valve connection, automatic power-failure valve shut-off, and direct interlock controls for industrial valves to prevent hazardous gas leaks.

Is remote monitoring available for the AT0602?

Yes. The detector supports remote centralized monitoring and management through an IoT cloud platform, allowing real-time data tracking and system diagnostics from off-site control rooms.