Description
The Siemens QRC1A2.104C27 flame sensor responds to the ultraviolet radiation of blue and yellow flames during the combustion of gas and liquid fuels. Suitable for use in heating systems with intermittent operating mode. Sensitivity is medium.
Key parameters and features:
operation with LMO/LME/ LMV and other combustion controllers with a non-constant cycle;
medium level of spectral sensitivity;
device with frontal visibility;
use in low-power burners burning gas or liquid fuel;
power cable length – 700 mm, with tip;
installation using a locking plug;
housing protection against dust, moisture according to IP 40 standard;
supply voltage 230 V, -15%, +10%, frequency 50/60 Hz, ±6 %;
temperature range: -20...+60 °C (up to +75 °C for a short time, no more than 1 min.).
More about the QRC1 sensor
The sensor is equipped with a plastic housing, fixed to the burner using a plug. The front has a protective glass that prevents the device from clogging and provides a seal. A stationary 3-core cable with PVC insulation is connected to the housing.
The sensor contains an ultraviolet-sensitive diode with a plexiglass lens, as well as a signal preamplifier. The diode has medium light sensitivity, optimally covers the range of UV radiation of the flame. The lens focuses on the most active part of the light. The detector allows for short-term signal failures, which ensures stable operation of the burner with strong flame pulsations.
Please note
The sensor takes into account extraneous light sources (radiation from heated refractory brick, daylight, artificial lighting, etc.). When installing the detector, it is necessary to exclude the ingress of ignition spark into the measurement area, as this will lead to an emergency shutdown of the system due to light interference.
Advantages:
optimal photosensitivity of the photocell;
simple installation on a special plug;
protection against dust penetration;
universal application;
completion with a preamplifier;
power cable with PVC sheath;
wide operating temperature range.
You can buy the Siemens QRC1 flame sensor and other components for gas and liquid fuel burners on the ANKAS website. For systems where it is impossible to directly measure the flame radiation, models of sensors with mirror attachments for side illumination are provided.