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QRA4.U Flame Detector siemens photocell QRA4.U burner accessories Siemens photocells
Shipping: International shipping available
Shipping time: Standar(10-20 business days), Rush(5-10 business days)
Discount: Get 2% discount on orders of USD $100.00,Get 3% discount on orders of USD $200.00
Handling time: Ships within 3 business days after receiving cleared payment
Returns: 7 days money back guaratee,buyer pays return shipping
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Siemens photocell: QRA4.U
Technical performance and structural characteristics:
Ultraviolet photoelectric eye QRA4.U detects ultraviolet rays and is used to detect blue flames, that is, to detect ultraviolet rays in flames, and can be used for flame safety detection of gas.
□Applicable to the program controller for intermittent operation, mainly used for the safety detection of gas burners, 3/4 threaded interface, its style and function are basically the same as HONEYWELL’s flame detector C7027A.
Application
LGB2…LGB4…requires additional accessory AGQ1…to use
LFL…. LFE1… LFE10…
LMG…requires additional accessories AGQ2…for use
Environmental conditions
Storage DIN EN 60721-3-1
Climatic conditions class 1K3
Mechanical condition class 1M2
Temperature range -20…+60 °C
Humidity < 95 % r.h.
Precautions
Installation, assembly and service are all performed by professionals
□ Before making any wiring changes in the detector’s connection area, fully isolate the equipment from the mains (all two stages disconnected).
□ Provide appropriate protection to connection terminals to ensure that they are not subject to electric shock.
□ Check to make sure the wiring is properly connected.
□ Halogen lamps, welding equipment, special lamps or ignition sparks may generate enough radiation to cause the detector’s UV unit to ignite. X-rays and gamma rays can also cause false flame signals.
□ A fall or impact can affect the safety function. Such detector units are inoperable, even if they appear to be damaged at all.
Siemens photocell QRA4.U technical parameters:
| Average unit life | Approx. 10′000 Hours At Max. +50 °c; Higher |
| The Ambient Temperature Reduces The Corresponding Life Of The Unit | |
| Protection class | Ip 54 (must Be Confirmed During Installation) |
| Installation location | Optional |
| Weight | About 180 G |
| Allowable combustion chamber pressure | Up To 150 Mbar |
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The tailoring and handling time is the number of business days we will take to process your items before shipping them. This processing includes order verification, item manufacturing, quality checking and packaging. This does not include the shipping time.
Different items and categories have different tailoring and handling times. However, on each item page the information is displayed next to the item photo as shown in the picture below.
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