• Elegant slim-line design
  • EN54 and BASEEFA approved
  • Installer friendly design

General

The DT675 is a rate-of-rise, intrinsically safe heat detector with an operating temperature rating at Grade B (up to 65oC) and forms part of the 670 series of intrinsically safe conventional detector line. Heat detectors are normally used in applications where smoke detectors are unsuitable or if there is a danger of nuisance alarms from smoke detectors.

Heat Detector Classification

Heat detectors are classified according to the highest ambient temperature in which they can safely be used without risk of false alarm. The classes are identified by the letters A to G. (Class A is subdivided into A1 and A2.) In addition to the basic classification, detectors may be identified by a suffix to show that they are rate-of-rise (suffix R) or fixed temperature (suffix S) types.

Detector Class Max. Application Temperture Static Responce Temperture
A1 50oC 54-65oC
A2 50oC 54-70oC
B 65oC 69- 85oC
C 80oC 84-100oC
D 95oC 99-115oC
E 110oC 114-130oC
F 125oC 129-145oC
G 140oC 144-160oC

All heat detectors in the 630/670 range are tested as static or rate-of-rise detectors and are classified as A1R, A1S, A2S, BR, BS, CR and CS.

BASEEFA Certificate number

ATEX - Baseefa 06 ATEX 0007X
IECEx - IECEx BAS 06.0002X

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