VVF53.40-25 BPZ:VVF53.40-25 MFN:VVF53.40-25 two-way valve

Zhejiang Shuangkong Electrical Technology Co., Ltd. was established in July 2022. The company is located in Huzhou City, a city in the northern part of Zhejiang Province, the intersection of Zhejiang, Jiangsu, and Anhui provinces, the central area of the Yangtze River Delta, and the central city of the G60 Science and Technology Innovation Corridor. The company mainly engages in PLC modules, CPU modules, input/output modules, analog modules, power modules, communication modules, switching modules, interface modules, control modules, switching input/output modules, frequency converters, servo drives, motion controllers, S120 CNC, soft starters, DC speed regulators, network cables, motors, servo motors, motor drivers, motor supporting cables, touch screens, industrial control computers, switches, buildings Industrial automation drive products such as actuators, controllers, electric eyes, flame detectors, combustion valves, burners, displays, etc. Our products are widely used in industries such as automotive, electronics, food processing, mechanical manufacturing, clothing processing, and modern logistics. The company adheres to the business philosophy of "putting urban credit first and not sacrificing the future for short-term benefits". We will continue to innovate, forge ahead, and welcome inquiries and orders.

Siemens Programmable Controller S7-200CN ET-200 S7-200 S7-300 S7-400 S7-1200 S7-1500 smartS7-200

Siemens touch screen OP77-TP series MP277 MP377 TD200-TD400C

Siemens Communication Accessories DP Cable Ethernet Cable DP Connector Communication Card

Siemens motor V60-V80 servo motor 1FT servo motor Bede motor 1FK motor

Siemens frequency converter V10 series MM440 series G110 series G120 series

Siemens CNC system 810D system 840D system 808D 8404DSL

Siemens frequency converter series: MM420, MM430, MM440, G110, G120. MIDASTER series

Siemens fully digital DC speed control device 6RA23, 6RA24, 6RA28, 6RA70, 6SE70 series

Siemens actuators, burners, controllers, electric eyes, flame detectors, modules, operation panels, etc

Siemens SQN, SQM, AGG, LFL, LME, LMV, QRA, SKP, VGD, VGF, VRD and other series products

Siemens flame detector

Siemens original stock, infrared photoelectric eye QRI2 detects infrared, used to detect yellow flames, that is, to detect infrared in flames, and can be used for fuel flame safety detection. QRI2A2.B180B is used in conjunction with Siemens program controllers for large burners, and can operate continuously or intermittently.

Infrared flame detection.

QRI2B2.B180B Siemens Flame Detector

Flame signal amplifier.

There are two types of detection: frontal detection and side detection.

Automatic inspection function.

Not limited by the load of the burner.

Not limited by operating mode.

Installation, assembly, and service work must be completed by professional personnel

Before making any circuit changes within the connection area of the detector, isolate the equipment from the main power supply (all two levels disconnected).

Provide appropriate protection for connecting terminals to ensure they are not exposed to the hazards of electric shock. Check and confirm that the wiring is connected correctly.

Check and confirm that the wiring is connected correctly. Halogen lamps, welding equipment, special lighting fixtures, or ignition sparks may generate sufficient radiation to ignite the UV unit of the detector. X-rays and gamma rays can also cause erroneous flame signals.

Falling or hitting can affect safety functions. Such detector units cannot operate, even if their appearance appears to be damaged at all.

The UV flame detector is designed for Siemens burner control devices to monitor oil and gas flames and ignition sparks. In order to ensure the free operation of the burner, these detectors continuously monitor the intensity of UV radiation from the burner flame during each half cycle, providing signal current for the control system.

The UV unit of the detector is located behind the rotating baffle at the front end of the detector tube, which is connected to the casing through a flange. Quartz glass windows protect pipes and blinds from dust entry. A hard shell accommodates a stepper motor that drives the shutter and electronic devices that control the shutter.

High sensitivity, the shell is made of die-cast aluminum. The UV flame detector is designed for use in Siemens burner controllers for monitoring gas or oil flames.

Flame protection devices, approved for continuous operation, are used to monitor oil and gas flames in applications with ionization probes and photocell detectors RAR9.

Flame protection using UV flame detectors QRA2/QRA2M/QRA4/QRA4M/QRA10/QRA10M in intermittent operation mode.

UV flame detector, normal sensitivity, with flange/fixture, designed for use in Siemens burner controllers for monitoring gas or oil flames.

Installation precautions

Always run the high-voltage ignition cables separately, while observing the possible distance between the detector and other cables from the electrical connection of the flame detector. It is important to achieve actual non-interference and lossless signal transmission:

• Do not run the detector cable together with other cables - the line capacitance reduces the size of the flame signal - use a separate cable

Observe the allowable length of the detector cable (see Using Burner Control)

The connecting wire must pass through the protective tube (made of plastic or grounded metal)