What gas safety products does Shield manufacture?

Shield designs and manufactures household combustible gas detectors, industrial and commercial point-type combustible gas detectors, gas alarm controllers, portable and 4-in-1 multi-gas detectors, and solenoid gas shut-off valves. The portfolio covers more than 80 marketable models that can be combined into complete detect-alarm-shut-off systems.

Is the Lower Explosive Limit (LEL) the same as the alarm set point?

No. The LEL is the lowest gas concentration in air that can ignite. Combustible gas detectors read in %LEL and trigger alarms well below that limit. Alarm set points are commonly configured in the range of about 20-25% LEL for the first alarm and up to about 50% LEL for the second alarm, but the final values must follow the standard that applies in your country and project.

Why do oxygen detectors display %VOL instead of ppm?

Normal air contains about 20.9% oxygen by volume, so oxygen deficiency or enrichment is measured in percentage by volume (%VOL). A ppm scale is designed for trace-level toxic gases and would be impractical for oxygen monitoring during pipe welding or confined-space work.

How does a gas detector work with a solenoid shut-off valve?

When the detector or gas alarm controller registers a concentration above the alarm value, it emits an audible and visual alarm and sends a linkage signal that closes the solenoid gas shut-off valve. Shield shut-off valves such as the JYFJS-011 series require manual reopening, so gas supply is only restored after the cause of the leak has been checked.

Does Shield support OEM and ODM orders for distributors?

Yes. Shield supports OEM and ODM cooperation. Branding, packaging, documentation and project-specific configuration such as target gas, alarm values and linkage outputs are reviewed and confirmed with our engineering team before sampling and mass production.

Which certifications do Shield products hold?

Applicable Shield products have been awarded China's mandatory 3C certification, and the company holds more than 40 patents. For export projects, our sales engineers confirm the test reports and compliance documents required in the destination market before an order is placed.

OEM Portable Gas Detector Pen JLY-50A Series - High-Quality Equipment from China Suppliers & Factory Factory, Factories

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OEM Portable Gas Detector Pen JLY-50A Series - High-Quality Equipment from China Suppliers & Factory Factory, Factories

Product Overview

The JYL-50A portable gas detector, proudly manufactured in China, is an innovative solution designed for safety in various industrial environments. This fully intelligent gas detector utilizes advanced large-scale integrated circuit technology alongside international standard intelligent design. It features proprietary digital-analog hybrid communication technology for efficient gas detection. Employing a free diffusion method, the detector is equipped with high-quality gas sensors that provide exceptional sensitivity and remarkable repeatability. User-friendly and easy to maintain, it meets the stringent reliability requirements essential for industrial site safety monitoring. The robust casing is crafted from high-strength engineering plastic, ensuring durability with waterproof, dustproof, and explosion-proof capabilities.

Application

This versatile detector is widely utilized across various sectors including petroleum, chemical, environmental protection, metallurgy, refining, gas distribution, biochemical medicine, and agriculture. As a trusted product from reputable suppliers and factories in China, it complies with all relevant national standards for design, manufacturing, and inspection, ensuring the highest quality and reliability for industrial safety applications.

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Product Description

Special Functions

Powered by 3V batteries (two AA batteries)
The sensor unit is equipped with built-in temperature compensation and calibration coefficients, featuring high precision and good linearity
It can provide outstanding stability and response recovery speed
The LCD displays the measured value of gas concentration, accompanied by two-pole alarm color prompts
It is equipped with simple calibration, automatic verification and zeroing, as well as automatic compensation programs
Anti-radiation/electromagnetic interference, reducing false alarms
The buzzer alarm indicates two levels of concentration alarm
The LCD indicates that the battery status needs to be replaced
Miniaturized design, economical and practical, convenient for use and maintenance

Leak Detector Structure

The device mainly consists of components such as the casing, circuit board, battery, display screen, and sensors.

Working Principle

Catalytic combustion type.

Frequently Asked Questions

Q What type of batteries does this gas leak detector use?

This gas leak detector is powered by 3V batteries, specifically two AA batteries, making it easy to replace and widely available for everyday use.

Q How does the device alert users when gas is detected?

The device uses a buzzer alarm to indicate two levels of gas concentration alerts. Additionally, the LCD screen displays the measured gas concentration value along with two-pole alarm color prompts for clear visual indication.

Q What is the working principle of this leak detector?

The leak detector operates on the catalytic combustion principle, which allows it to detect combustible gas concentrations with high accuracy and reliable response speed.

Q Does the detector require manual calibration?

The device is equipped with simple calibration procedures along with automatic verification, zeroing, and compensation programs, minimizing the need for complex manual calibration and ensuring ongoing measurement accuracy.

Q Is this detector resistant to electromagnetic interference?

Yes. The device features anti-radiation and anti-electromagnetic interference design, which significantly reduces the occurrence of false alarms and ensures reliable performance in various environments.

Q What are the main components of the leak detector?

The device mainly consists of key components including the casing, circuit board, battery compartment, LCD display screen, and gas sensors, all integrated into a compact and miniaturized design for easy use and maintenance.

OEM Portable Gas Detector Pen JLY-50A Series - High-Quality Equipment from China Suppliers & Factory Factory, Factories

Product Description

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