Catalytic MP7217 Vq548MP Combustible Gas Sensor CH4 Sensor

• Customization: Available
• Type: Catalytic Combustion Gas Sensor
• Conductivity Type: Non-conductivity Type
• Model NO.: VQ548MP
• Output Signal Type: Analog Type
• Production Process: Integration
• Material: Metal
• IP Rating: IP55
• Sensitivity: High
• Certification: CE
• Customized: Non-Customized
• Voltage Rating: 2.9-3.0V
• Package / Case: ABS 4series
• Sensing Range: 5% Methane in Air
• Operating Temperature: -40 to 60ºC
• Mounting Type: 3 Pin-Socket Contact
• Size / Dimension: 20.0*16.5*20.0mm
• Sensing Object: Combustible Gas
• Application: Combustible Gas Detector Mining Applications.
• Output Type: 12 Mv/% Methane
• Measuring Range: 5% Methane in Air
• Output: Voltage Signal
• Voltage - Input: 2.9-3.0V
• Low Power: Designed for Battery Operation
• Transport Package: Cartons
• Specification: 16*20mm
• Trademark: SGX
• Origin: England
• HS Code: 9027100090
• Package Size: 20.00cm * 15.00cm * 10.00cm
• Package Gross Weight: 0.500kg

Product Description

Product Description

VQ548MP-DA Catalytic Combustible Gas Sensor

The VQ548MP-DA is a high-performance catalytic combustible gas sensor, specifically designed for detecting flammable gases such as methane, and suitable for use in hazardous environments like mining. Manufactured by SGX Sensortech, this sensor provides a low-power, intrinsically safe solution that is highly robust, resistant to mechanical shocks, and capable of withstanding exposure to harsh conditions.

Key Features:

• Low Power Consumption: Optimized for battery-operated devices, with typical power consumption between 34 mA and 42 mA.
• Compact Design: Small size (16 x 20 mm) allows for easy integration into space-constrained systems.
• Intrinsic Safety: Assessed as intrinsically safe for use in explosive environments, making it ideal for industrial applications, including Group I mining environments.
• High Shock Resistance: Built to withstand mechanical shocks, ensuring long-term reliability even in rugged conditions.
• ATEX & IECEx Certified: Compliant with international standards for explosive atmospheres, ensuring safe operation in both gas and mining applications.
• Low Orientation Sensitivity: Delivers consistent performance regardless of sensor orientation.

Operating Principle:

The VQ548MP-DA utilizes a silicon pellistor structure, where two micro-machined diaphragms with embedded heater meanders are used to detect flammable gases. Upon exposure to a flammable gas, the oxidation process heats the device, causing a measurable increase in resistance. A second, inert compensator device is used to account for environmental temperature variations, ensuring accurate readings.

Technical Specifications:

• Gas Detection: Detects most flammable gases and vapors, with optimal sensitivity for methane detection up to 5% volume in air.
• Supply Voltage: Operates within a voltage range of 2.9 to 3.1 V.
• Response Time: Fast response with a T90 of less than 12 seconds.
• Long-Term Stability: Maintains stable performance with minimal zero drift (<1.0 mV/month) and sensitivity drift (<0.6 mV/month).
• Ambient Temperature Range: Suitable for operation in temperatures ranging from -20°C to +60°C, with a certified range up to +75°C.

Environmental Conditions:

• Humidity Range: Operates in environments with humidity from 0% to 95% (non-condensing).
• Pressure Range: Suitable for use in pressures between 70 to 130 kPa.
• Weight: The sensor weighs just 8 grams, making it lightweight and easy to integrate into various devices.

Safety and Precautions:

• The sensor is designed to be highly resistant to mechanical damage but should not be exposed to extreme levels of hydrogen sulfide, silicones, or other toxic compounds that could poison the catalytic material and degrade performance.
• The sensor requires proper ESD protection during handling to prevent damage.
• Overheating or exceeding the specified maximum heater voltage can cause permanent damage to the sensor.

Certification and Compliance:

• The VQ548MP-DA is ATEX and IECEx certified for use in both Group I and Group II environments, ensuring its safety for use in explosive atmospheres.
• The sensor is compliant with major standards, including EN 60079-0, EN 60079-1, and IEC 60079-0, ensuring reliable performance in demanding applications.

Applications:

• Mining: Ideal for detecting methane and other flammable gases in underground and above-ground mining operations.
• Industrial Safety: Suitable for use in petrochemical plants, gas processing facilities, and other industrial environments where flammable gas detection is critical.
• Hazardous Area Monitoring: Compliant with safety standards for use in hazardous locations as part of a broader gas detection system.

Package Dimensions:

• The sensor comes in a compact, protective package to ensure safe handling and easy integration into your systems.

This product offers a highly reliable and safe solution for detecting combustible gases in a variety of industrial and mining environments, with certifications that ensure it meets stringent safety standards for hazardous areas.

 

Parameter	Specification
Gas Detected	Most flammable gases and vapors (optimal for methane)
Operating Voltage	2.9 to 3.1 V (typical 3.0 V)
Typical Power Consumption	34 to 42 mA (max 96 mA at power-on)
Response Time (T90)	< 12 seconds
Sensitivity	Minimum 12 mV/% methane (measured with 1% methane)
Zero Offset Range (in clean air)	± 20 mV
Maximum Gas Concentration	5% methane in air
Long-Term Zero Drift	< 1.0 mV/month
Long-Term Sensitivity Drift	< 0.6 mV/month
Ambient Temperature Range	Operating: -20°C to +60°C; Certified: -20°C to +75°C
Operating Pressure Range	70 to 130 kPa
Humidity Range	0 to 95% (non-condensing)
Response Time (T90)	Measured at 3.0 ± 0.1V with 1% methane
Heater Voltage Rating	Max 3.2 V between pins 2 and 3
Max Power Rating	1.3 W
Weight	8 g
Housing Material	PEI (Polyetherimide) or PPS-GF40
Certification	ATEX, IECEx, and Group I & II certification for hazardous areas
Flameproof Enclosure	Certified flameproof (Ex d)
Long-Term Stability	No significant drift under normal operating conditions
Inrush Current	Limited to < 641 mA under steady-state conditions
Ingress Protection	IP20 for internal mounting

Company Information

Packaging & Shipping

 

FAQ