MIC-500S-SO2-A Sulfur Dioxide Gas Detector and Alarm

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MIC-500S-SO2-A Sulfur Dioxide Gas Detector and Alarm

Product ID：HZYJeyhl025

Price: Please inquire PDF Format

Supply Ability:200SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberMIC-500S-SO2-A

Brand NameSZYIYUNTIAN

Payment TermsTT，PAYPAL，Alibaba.com Pay

MIC-500S-SO2-A Sulfur Dioxide Gas Detector and Alarm
Product Introduction
The MIC-500S-SO2-A Sulfur Dioxide (SO2) Gas Detector and Alarm is a fixed industrial SO2 gas detector designed for continuous sulfur dioxide concentration monitoring and leakage alarm in hazardous environments. Equipped with a high-precision imported sensor, the detector provides stable, sensitive, and accurate SO2 measurement.
With Exd II CT6 explosion-proof protection, anti-static and lightning protection, electromagnetic interference resistance, and flexible installation options, the MIC-500S-SO2-A is suitable for chemical plants, industrial facilities, storage areas, wastewater treatment, and other locations where sulfur dioxide leakage may occur.

Key Features
• Exd II CT6 explosion-proof construction for hazardous environments.
• High-precision, long-life imported SO2 sensor.
• Integrated explosion, lightning, static, EMI and EMC protection.
• Automatic protection against high-concentration gas shock.
• Reverse-polarity protection prevents instrument damage.
• Independent gas chamber provides fast response and long-term stability.
• Automatic compensation for zero drift, full-scale drift, temperature, and humidity.
• Full software calibration with simple three-button operation.
• Optional infrared remote control enables wireless operation within 15 m without opening the enclosure.
• Standard 3-wire 4–20 mA + relay + RS485 (RTU) outputs.
• Equipped with a local audible and visual alarm.
• Optional wireless transmission over 2 km, 5 km, unlimited distance, or network transmission.
•Wall-mounted, pipeline, diffusion, flow-through, and pump-suction configurations available.

Working Principle
The MIC-500S-SO2-A uses a dedicated SO2 gas sensor to detect sulfur dioxide concentration in the surrounding gas. In diffusion mode, SO2 enters the independent gas chamber naturally and interacts with the sensing element, generating an electrical signal proportional to the gas concentration.
The internal control system processes and compensates the sensor signal for zero/full-scale drift, temperature, and humidity effects. The measured SO2 concentration is transmitted through 4–20 mA, RS485, or relay outputs. When the concentration reaches a preset alarm threshold, the detector activates the corresponding relay and local audible/visual alarm.
For applications requiring remote monitoring, optional wireless transmission can send SO2 concentration and alarm information to a remote monitoring system.

Technical Specifications

Parameter	Specification
Model	MIC-500S-SO2-A
Detection Gas	Sulfur dioxide (SO2)
Detection Range	0–100 ppm, 200 ppm, 1000 ppm, 5000 ppm, Vol optional
Resolution	0.01 ppm (0–100 ppm); 0.1 ppm (0–1000 ppm); 1 ppm (>1000 ppm); 0.01% Vol
Detection Method	Diffusion, flow-through, or pump-suction
Installation	Wall-mounted, pipeline, or flow-through
Accuracy	≤±3% F.S.; ±2% F.S. or ±1% F.S. optional
Response Time	≤30 s
Output	3-wire 4–20 mA + relay + RS485 (RTU)
Alarm Output	1 or 2 dry-contact relay outputs; alarm points configurable
Operating Temperature	-40°C to +70°C
Sample Gas Temperature	-20°C to +800°C optional; short-term detection up to 1300°C
Relative Humidity	≤95% RH, non-condensing
Operating Voltage	12–30 VDC
Sensor Life	Approx. 3 years
Explosion-Proof Thread	M20×1.5; 3/4" NPT; 1/2" NPT optional
Explosion-Proof Rating	Exd II CT6
Cable	3-core shielded cable
Protection Rating	IP65
Dimensions	183 × 143 × 107 mm
Weight	Approx. 1.5 kg

For high-humidity applications, an optional filter or fully automatic gas pretreatment system is recommended.

Applications
The MIC-500S-SO2-A is suitable for:
• Chemical and petrochemical plants
• Sulfur-containing gas process areas
• Industrial gas leakage monitoring
• Wastewater and sewage treatment facilities
• Combustion and industrial process monitoring
• Gas storage and handling areas
• Environmental and occupational safety monitoring
• Hazardous-area fixed gas detection systems
• Pipeline and enclosed-space SO2 monitoring

MIC-500S-SO2-A vs. Conventional SO2 Detection

Feature	MIC-500S-SO2-A Fixed SO2 Detector	Conventional SO2 Detector
Detection Mode	Diffusion / flow-through / pump-suction	Usually single mode
Explosion Protection	Exd II CT6	Depends on model
SO2 Monitoring	Continuous	Often portable or intermittent
Output	4–20 mA + RS485 + relay	Often limited output
Alarm	Local audible/visual + relay	Depends on configuration
Temperature Compensation	Automatic	Not always available
Humidity Compensation	Automatic	Model dependent
Remote Operation	Optional IR remote	Usually limited
Wireless Transmission	Optional	Not always supported
Protection	IP65	Varies
High-Temperature Sampling	Up to 800°C optional	Usually unavailable

The MIC-500S-SO2-A sulfur dioxide gas detector is designed for continuous industrial monitoring rather than occasional spot measurement. Its explosion-proof enclosure, multiple industrial outputs, automatic compensation, local alarm, and optional wireless transmission make it suitable for integrated SO2 gas leak detection and safety monitoring systems.

Frequently Asked Questions (FAQ)
1. What gas does the MIC-500S-SO2-A detect?
It is specifically designed to detect sulfur dioxide (SO2) concentration and provide leakage alarms.
2. What detection ranges are available?
Standard ranges include 0–100 ppm, 0–200 ppm, 0–1000 ppm, and 0–5000 ppm, with Vol% ranges available according to configuration.
3. Is the detector suitable for hazardous areas?
Yes. The MIC-500S-SO2-A features an Exd II CT6 explosion-proof rating, making it suitable for applicable hazardous industrial environments.
4. What outputs are provided?
The standard configuration provides 3-wire 4–20 mA, relay outputs, and RS485 RTU communication. Optional wireless transmission is also available.
5. How quickly does the detector respond to SO2?
The specified response time is ≤30 seconds, depending on the selected sensor and application conditions.
6. Can the alarm thresholds be adjusted?
Yes. The detector supports one or two alarm relay outputs, and the alarm points can be configured according to application requirements.
7. Can the MIC-500S-SO2-A be used in high-temperature gas applications?
Yes, an optional high-temperature sampling configuration supports sample gas temperatures from -20°C to +800°C, with short-term detection up to 1300°C.
8. How long does the SO2 sensor typically last?
The specified sensor service life is approximately 3 years, depending on operating conditions, exposure, maintenance, and sensor type.
9. Can the detector transmit data wirelessly?
Yes. Optional wireless transmission supports 2 km, 5 km, unlimited-distance, or network-based transmission, depending on the selected communication solution.

Frequently Asked Questions (FAQ)
1. What gas does the MIC-500S-SO2-A detect?
It is specifically designed to detect sulfur dioxide (SO2) concentration and provide leakage alarms.
2. What detection ranges are available?
Standard ranges include 0–100 ppm, 0–200 ppm, 0–1000 ppm, and 0–5000 ppm, with Vol% ranges available according to configuration.
3. Is the detector suitable for hazardous areas?
Yes. The MIC-500S-SO2-A features an Exd II CT6 explosion-proof rating, making it suitable for applicable hazardous industrial environments.
4. What outputs are provided?
The standard configuration provides 3-wire 4–20 mA, relay outputs, and RS485 RTU communication. Optional wireless transmission is also available.
5. How quickly does the detector respond to SO2?
The specified response time is ≤30 seconds, depending on the selected sensor and application conditions.
6. Can the alarm thresholds be adjusted?
Yes. The detector supports one or two alarm relay outputs, and the alarm points can be configured according to application requirements.
7. Can the MIC-500S-SO2-A be used in high-temperature gas applications?
Yes, an optional high-temperature sampling configuration supports sample gas temperatures from -20°C to +800°C, with short-term detection up to 1300°C.
8. How long does the SO2 sensor typically last?
The specified sensor service life is approximately 3 years, depending on operating conditions, exposure, maintenance, and sensor type.
9. Can the detector transmit data wirelessly?
Yes. Optional wireless transmission supports 2 km, 5 km, unlimited-distance, or network-based transmission, depending on the selected communication solution.