Product Overview

The Siemens QRB1 Flame Sensor & Detector is a photo-resistive flame detector used for monitoring oil burner flames in industrial and commercial combustion systems. It detects the visible light emitted by yellow oil flames and sends a signal to the burner controller to confirm safe burner operation.

This sensor is widely used with Siemens burner controllers such as LME, LMO, LAL, LMV, and LOA series, making it a versatile flame monitoring solution for industrial burners and heating equipment.

The QRB1 flame detector works by sensing flame light in the visible and infrared spectrum, allowing the burner control system to verify flame presence during ignition and operation. If the flame signal is lost, the controller immediately shuts down the burner to maintain combustion safety.

With its compact housing, flexible cable options, and reliable photo-resistive detection technology, the QRB1 is widely used in industrial boilers, oil burners, furnaces, and process heating systems.

Key Features

Key Features

Designed for oil-fired industrial burners

Reliable photo-resistive flame detection

Detects visible yellow oil burner flames

Compact design for easy installation

Compatible with Siemens burner controllers

Flexible cable lengths for different installations

High sensitivity for stable flame detection

Ensures safe burner ignition and operation

Durable construction for industrial environments

Applications

• Industrial oil burners

• Pressure-jet oil burner systems

• Steam boilers and hot water boilers

• Industrial furnaces and ovens

• Thermal oil heaters

• Process heating equipment

Why Choose Siemens QRB1 Flame Sensor?

Trusted Siemens combustion safety technology

Reliable flame detection for oil burners

Compatible with multiple Siemens burner controllers

Compact design for quick installation

Improves burner safety and operational reliability

Long service life in industrial environments

Technical Description

The Siemens QRB1 Flame Sensor is a photo-resistive flame detector designed for monitoring visible yellow flames produced by oil burners. It converts the detected flame light into an electrical signal that is sent to the burner control unit to confirm flame presence.

When connected to a burner controller, the QRB1 continuously monitors the burner flame during operation. If the flame signal falls below the required threshold, the burner control system initiates a safety shutdown to prevent unsafe combustion conditions.

The detector is designed for intermittent oil burner operation and can be easily installed using standard mounting brackets or clip-in fittings within the burner assembly.

Technical Specifications