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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 CV300 ClirVu® 75 mm (3 in) Infrared Window
Fluke CV400 1A KO
Fluke CV300 ClirVu® 75 mm (3 in) Infrared WindowFluke CV400 ClirVu® 95 mm (4 in) Infrared Window
Size75 mm (3 in)95 mm (4 in) 
Voltage rangeAnyAny 
NEMA environment typeType 4/12 (indoor/outdoor)Type 4/12 (indoor/outdoor) 
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) and +260 °C (+500 °F) intermittent 
Arc-tested (IEEE C27.20.7)65 kA for 30 cycles @ 60 Hz at KEMA63 kA for 30 cycles @ 60 Hz at KEMA 
UL 50/NEMA environmental ratingNEMA type 4/14NEMA type 4/12 
UL 1558   
CSA C22.2 No.   
CSA type ratingType 6Type 4 
IP ratingIP 67 at TUVIP 67 at TUV 
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 at TUV 
Humidity rateIEC60068-2-3 at TUVIEC60068-2-3 at TUV 
UL 50 V component recognition  
Actual mounting hole diameter required89.89 mm (3.539 in)115.42 mm (4.544 in) 
Greenlee punch kit - punch/die739BB = 1431AV / 1432AV742BB = 2984AV / 2983AV 
Door latchHand turnHand turn 
Install time7 minutes or less5 minutes or less 
Optic insert diameter75 mm (2.96 in)95 mm (3.74 in) 
WarrantyLifetime replacement against manufacturing defectsLifetime replacement against manufacturing defects