Spectron-501-Exd Series Explosion-proof Flame Detector

Package price:
63 860.00  rub.
Package and accessories:
Body material:
Cable gland №1:
0.00 rub.
Cable gland №2:
0.00 rub.
Optical blend:
0.00 rub.
Sun visor:
0.00 rub.
Bracket for mounting on round tables:
0.00 rub.
You can FIND INFORMATION ON CABLE ENTRY and add a test transmitter, a power supply, and a spark protection barrier to commercial offer in the section Accessories

Explosion-proof UV/IR Flame Detector Highly Immune to Arc Welding and Other Strong Optical Noises.

  • Spectron-501-Exd-A

  • Spectron-501-Exd-M

  • Spectron-501-Exd-N

Spectron-501-Exd series detect manual arc and argon welding as false alarms.

For use in fire alarm and fire extinguishing systems in hazardous area zones 1 and 2 of enclosed buildings and open installations, as well as in underground mines, mining plants and their above-ground facilities.

  • Housing material of Spectron-501-Exd with index "A" is aluminum alloy (AD31T5);
  • Housing material of Spectron-501-Exd with index "N" is stainless steel (AISI 321);
  • Housing material of Spectron-501-Exd with index "M" is galvanized steel (steel 10).

Flame detector in stainless steel housing is recommended for use in facilities exposed to acidic, alkaline and other chemically aggressive environments, sea water and salt fog.

Circuit board of the device is equipped with a 3-stage lightning and surge protector, which allows using it without additional equipment for overvoltage protection.

For facilities with harsh operating conditions detector’s sensitivity range can be switched. Detection range in modes:

  • Standard - TP-5, TP-6 - 30 meters;

  • Close (factory setting) - TP-5, TP-6 - 17 meters;

The detector heater ensures full operation of the device at an ambient temperature of -70 to +90ºС. With the heating function disabled the operating temperature range is -55 to +90ºС. The detector remains operational with a short-term increase in temperature up to +135ºС.

The field of view of Spectron-501-Exd series is 90º in the vertical, horizontal and all inclined planes.

The flame detection range is (according to GOST R 53325-2012) - 30 meters to TP5 and TP6.

Minimum response time, 3, 10, 15, 22 seconds

The transition of the detector from the Alarm mode to the Normal mode is carried out by disconnecting the power supply for at least 8 seconds

Spectron-501-Exd Flame detector





Self test

Ingress Protection in accordance with GOST 14254

Type of explosion protection




ATTENTION. The model of cable glands must be specified when adding to the specification and ordering the equipment. Cable glands are not included in the price of the equipment. Full information on cable glands is available on the CABLE GLAND page of our website . If you have any questions about the correct selection of the type of cable gland, you can contact the technical support service by phone.

Specialized program Spectron-OPS-AutoCAD for easier designing

The warranty period of is 18 months from the date of commissioning, but not more than 24 months from the date of manufacturing.

Flame detectors work with explosion-proof test emitters:

  • IT-12-Exd (black) – a test emitter for remote verification of the detector's performance;
  • IT-12-Exd (red) – tuning emitter for remote change of detector parameters.

The range of emitters is 25 meters.


Technical support: 8 800 500-10-73 (free call)
or using e-mail: