Model 4121
The BIRNS Doubly-Safe Chamber Light, Model 4121, is the world's best lighting fixture for PVHO applications. It meets or exceeds applicable DNV, Lloyd's, and UL requirements; superior thermal design permits the use of higher-output lamps; and BIRNS' exclusive 'doubly safe' dual helium release method makes the entire front of the light its own helium release valve. Model 4121 comes complete with your choice of lamp and lens, and features:
Superior thermal design: lamps up to 50 Watts
Complete Safety: Dual He release. case ground/Earth
Versatillity: four lens options; various lamps.
Model 4121 uses cable assembly CEF3S16-x (where '-x' is the desired length in feet).
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The BIRNS Model 4121 Doubly-Safe Chamber Light |
Technical Specification
| PHYSICAL | |
| Length: | 76 mm (3.0 in) |
| Diameter of Body: | Ø76 mm (Ø3.0 in) |
| Diameter of base: | Ø114 mm (Ø3.0 in) |
| Mounting Holes: | 2 x Ø6.4mm (Ø0.25 in) holes on Ø97mm (Ø3.82 in) P.C.D. |
| Weight in Air: | 450grams (1.0lb) |
| LIGHTING/PHOTOMETRIC | |
| Lamp Type: | Incandescent Tungsten-halogen MR-16 (Parabolic Aluminized Reflector) |
| Time to full Brightness: | <1 second after application of power |
| Operating Position: | Universal (i.e. any position) |
| Light Output: | 895 initial lumens, depending on installed lamp |
| Dimming Range: | 0-100% |
| Correlated Colour Temp: | 3,050K, depending on installed lamp |
| ENVIRONMENTAL | |
| Protection Level: | IP 68 |
| Depth Rating: | 300 Meters (1,000 FSW) |
| ELECTRICAL | |
| Input Voltage: | 12 or 24 Volts AC /V DC (standard), depending upon installed Lamp. |
| Lamp Wattage: | 20 or 50 watts |
| Supply Frequency: | 50 or 60 HZ |
| Cable Size: | 16 AWG type SO, 3 conductors (standard) |
| Cable Current Rating: | 12 Amperes maximum |
| Cable Voltage Rating: | 600 Volts maximum |
| Ground (Earth) wire size: | 16 AWG; case ground to housing |
| MATERIALS | |
| All Housing Parts: | 6061 Aluminium, Hardblack anodized per MIL-A-8625, Type III, Class 2 |
| Wave Washer: | Spring Steel, plated |
| Lens: | Temperd Borosilicate glass |
| Lens Gasket: | Silicone |
| O ring seals: | Nitrile (Buna N), compound N674-70 |
| Connector: | Glass reinforced epoxy (GRE) |
| Connector Pins: | Brass 360 per ASTM B16, gold plated per MIL-G-45204 |
Our philosophy of a commitment to customer satisfaction by providing premium quality products was and still is the driving force behind our success.
Providing working solutions to your data monitoring requirements in harsh, hostile environments.
Last updated : 02/25/2009
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