Product selection guide: IR windows | Fluke
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Product selection guide: IR windows

Use our product selection guide to find the IR window that fits your needs best.
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Fluke CV400 1A KO
Fluke 050 clkt 1b
Fluke CV400 ClirVu® 95 mm (4 in) Infrared WindowFluke 050 CLKT IR Window for Outdoor and Indoor Applications
Size95 mm (4 in)50 mm (2 in) 
Voltage rangeAnyAny 
NEMA environment typeType 4/12 (indoor/outdoor)Type 3/12 
AutoGround™   
ClirVu® Optic   
Operating temperature-40 °C to +232 °C (-40 °F to +450 °F) and +260 °C (+500 °F) intermittent-40 °C to +232 °C (-40 °F to +450 °F) 
Arc-tested (IEEE C27.20.7)63 kA for 30 cycles @ 60 Hz at KEMA60 kA for 30 cycles @ 60 Hz at KEMA 
UL 50 V component recognition   
UL 50/NEMA environmental ratingNEMA type 4/12NEMA type 3/12 
UL 1558  
CSA C22.2 No.   
CSA type ratingType 4Type 3/12 
IP ratingIP 67 at TUVIP 55 
Lloyd's RegisterUp to 11 kV marine switchgear, indoor or outdoor (offshore only)Up to 11 kV marine switchgear, indoor or outdoor (offshore only) 
Vibration ratingIEC60068-2-6 at TUVIEC60068-2-6 
Humidity rateIEC60068-2-3 at TUVIEC60068-2-3 
Actual mounting hole diameter required115.42 mm (4.544 in)43.2 mm (1.7 in) 
Greenlee punch kit - punch/die742BB = 2984AV / 2983AV06974/04013 
Door latchHand turnHand turn 
Install time5 minutes or less10 minutes 
Optic insert diameter95 mm (3.74 in)50 mm (2 in) 
WarrantyLifetime replacement against manufacturing defectsLifetime replacement against manufacturing defects 
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