Datasheet

FLK-050-CL / CLKT FLK-075-CL / CLKT FLK-100-CL / CLKT
Optic Data
Crystal Insert Diameter 50mm(1.97in) 75mm(2.96in) 100mm(3.94in)
Viewing Aperture Diameter 43mm(1.7in) 68mm(2.7in) 89mm(3.5in)
Viewing Aperture Area 1452mm
2
(2.25sqin) 3632mm
2
(5.63sqin) 6322mm
2
(9.79sqin)
Thickness 2mm(0.08in) 2mm(0.08in) 4mm(0.16in)
CLIRVU Coating Yes
Shortwave IR Capable Yes
Midwave IR Capable Yes
Longwave IR Capable Yes
Ultraviolet (UV) Capable Yes
Visual Capable Yes
Fusion Capable Yes
Underwriters Laboratories (UL) Recognized YES
  UL50Environmental Type3/12
  UL746C N/A(PolymerFree)
  UL94 N/A(PolymerFree)
Canadian Standards Association (CSA) Approval YES
  Environmental Type3/12
KEMA (Arc-Testing)
  ANSIC37.20.7 50kAfor30cycles@60Hz
  EEMACS14-1Type-B 40kAfor30cycles@60Hz
ASTA (Arc-Testing)
  IEC62271 20kAfor5cycles@50Hz
TUV
  CyclicHumidityWithstand YES
  VibrationWithstand YES
NEMKO
  Resistanceofinsulatingmaterialsto100°C YES
  Resistanceofinsulatingmaterialtoballpressure(Brinell) YES
  Glow-wiretest650°C YES
Lloyds Register
  Upto11kVMarineSwitchgear,IndoororOutdoor YES
Detailed specifications
Why is available area important?
Understandingthedifferencebetween“OpticDiameter”
and“AvailableArea”givesthethermographera
measure of how much infrared energy is passing
through the window. The more energy, the better the
reading.UsingacrystalIRWindowmeansthatthe
entire area is available for infrared transmission for
optimum repeatability and results. While a mesh grid
mayhavealarger“OpticDiameter”thegriditselfblocks
the IR signal, meaning that the amount of radiation
available to the camera is significantly reduced and the
signal may be irregular. It is a generally accepted fact
that due to interference by mesh grids, transmission
correction and hence measurement is not possible,