QASP48HDBL

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The QASP48HDBL is a thermal-dispersion switch technology designed to detect mixtures of combustible and non combustible gases in air or other process media. It is a unique safety device that creates a thermal-dispersion “gas curtain” to detect any combustible gas and promptly shut off the airflow to stop its spread. The application field for the QASP48HDBL is very wide and it can be used to protect people, atmosphere, and equipment in a number of applications in various industries, such as refinery operations, chemical processing, oil & gas production, transportation, and power plants. In addition, the switch can be used to detect combustible gas or hydrocarbon concentrations in labs, storage tanks, grain bins, and other hazardous atmospheres.

The working principle of the QASP48HDBL is quite simple. It comprises two primary parts, the thermal-dispersion sensing switch and the thermal-dispersion sensor. The sensing switch is housed in an enclosure and consists of two internal modules, a spark plug and a contactor. When a combustible gas is detected by the thermal-dispersion sensor, the spark plug ignites and the contactor opens the electrical circuit, effectively stopping the flow of air to the detector. The thermal-dispersion sensing switch also monitors the temperature of the air, which increases as the concentrations of combustible gas increase. If the temperature rises beyond a certain point, the switch triggers the contactor, cutting the power supply and shutting down the thermal-dispersion sensor.

The QASP48HDBL is designed to be able to detect a wide range of combustible and non combustible gases and vapors in low, medium and high concentrations. The switch can be used in a variety of environments, from very low temperature (-40 °C to 225 °C) to high pressure applications. It is resistant to corrosion, dust, and moisture and requires minimal maintenance. The switch has a long service life with a superior low temperature response time for reliable performance. The switch can be connected to an alarm system to alert personnel when it detects the presence of a combustible gas and is suitable for a variety of industrial applications.

In conclusion, the QASP48HDBL is a highly reliable and versatile safety device capable of detecting a wide variety of combustible and non combustible gases and vapors. It is suitable for a variety of applications in multiple industries and has a long service life with superior low temperature response time. It is easy to install and requires minimal maintenance, making it an ideal choice for safety and protection in many industrial environments.

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