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 China Industrial and Commercial Gas Detector SD2100A Series - Reliable Suppliers & Factory for Safety Solutions Manufacturer, Supplier

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OEM China Industrial and Commercial Gas Detector SD2100A Series - Reliable Suppliers & Factory for Safety Solutions Manufacturer, Supplier

Product Overview

The GTYQ-SD2100A series point-type gas detector is a state-of-the-art intelligent device designed for reliable gas detection. This advanced detector operates on a bus and branch line system, forming an efficient gas alarm detection network when paired with the compatible controller. It enables real-time monitoring of hazardous gases in various working environments, displaying their concentration levels on-site. Should the gas concentration exceed preset thresholds, the controller promptly triggers both audible and visual alarm signals. Additionally, the system allows for comprehensive monitoring, including normal, fault, and alarm statuses of the detector. Users can perform zero point calibration and concentration calibration easily through the controller or remote control, along with setting essential parameters like high/low alarm limits.

Application

This versatile leak detector is extensively utilized across a range of industries, including petroleum, chemicals, environmental protection, metallurgy, refining, gas distribution, biochemical medicine, and agriculture. As a trusted product from China, it is an ideal choice for suppliers and factories looking for dependable gas detection solutions.

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Product Description

Product Features

Compatible with bus systems and 4-20mA distributed systems, facilitating system design and expansion.
Infrared remote control operation, no need to open the cover for on-site operation.
Three independent indicator lights, indicating normal operation / fault / alarm of the device.
Comes with linkage control output, capable of controlling on-site sound and light or fan/valve.
Dual outlet structure, convenient for on-site construction.
Built-in temperature detection function ensures accurate and effective detection of the product in various temperature environments.

Unboxing and Inspection

Standard accessories: Product manual (1 piece), factory inspection report (1 piece), product certificate (1 piece), mounting bracket (1 piece), installation accessories (1 piece).
Unboxing inspection: The product appearance has no scratches, the label is intact and clear, and the accessories are complete.

Frequently Asked Questions

Q Is this detector compatible with both bus systems and 4-20mA distributed systems?

Yes. The detector is fully compatible with bus systems and 4-20mA distributed systems, making it easy to integrate into a wide range of existing installations and to expand the system as needed.

Q How is the detector operated on-site — does it require opening the cover?

No, the detector supports infrared remote control operation. There is no need to open the cover for on-site adjustments, which simplifies maintenance and reduces the risk of contamination or damage during operation.

Q What do the three indicator lights on the detector represent?

The three independent indicator lights display the real-time status of the device: one indicates normal operation, one signals a fault condition, and one activates during an alarm state — allowing operators to quickly assess device status at a glance.

Q Can the detector trigger external devices such as alarms or ventilation systems?

Yes. The detector comes with a built-in linkage control output that can be used to activate on-site sound and light alarms, as well as fans or valves, enabling automated response when gas is detected.

Q Does temperature variation affect the detection accuracy of this product?

No. The detector features a built-in temperature detection function that automatically compensates for temperature changes, ensuring accurate and reliable gas detection across a wide range of environmental temperature conditions.

Q What accessories are included in the standard package?

The standard package includes: a product manual (1 piece), a factory inspection report (1 piece), a product certificate (1 piece), a mounting bracket (1 piece), and installation accessories (1 piece). Upon unboxing, please verify that the appearance is free of scratches, the label is intact and legible, and all accessories are present.

OEM China Industrial and Commercial Gas Detector SD2100A Series - Reliable Suppliers & Factory for Safety Solutions Manufacturer, Supplier

Product Description

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