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DeepSea Power and Light

DeepSea Power & Light designs and manufactures durable products for subsea applications. These products include video cameras, lights, lasers, power modules, and pressure relief valves. Oceanographic and underwater uses range from surface applications to full ocean depth deployments. 
The DeepSea Power & Light products have a great track record and are particularly renowned for their compactness, quality of build and extremely attractive price/performance ratio in terms of light output and image quality.


DSP&L offers a wide range of camera options including HD, low-light, self-lit, and super-wide field of view options to be your underwater eyes.  Pair with FlexLink for fibre optic output.

The SeaLite® family has been putting all things subsea in the spotlight since 1986 with the highest quality in filament, HID, and LED lighting solutions and light outputs from 700 to 18,000 lumens – see our application note below about the importance of comparing light outputs in lumens! Lux Lies

SeaVent™ Pressure Relief valves:
Many Subsea Electronic Modules require a Pressure Relief Valves to relieve internal pressure due to internal off-gassing. DeepSea Power & Light SeaVent™ pressure relief valves meet critical subsea specifications for a variety of applications. SeaVent™ universal pressure relief valves can be used on instrument housings, battery packs, and other applications requiring venting.

Key features include:

Multiple material options
Adjustable cracking pressure
6,000 m or 11,000 m depth rated
Vacuum and fill attachments available

Models are available with adjustable cracking pressure, a selection of materials, and an 11,000m depth rating. A 6,000m depth rating is standard.

SeaVent Double Dual Seal (DDS) uses dual O-rings for redundant protection against leaks. Hexagonal sides at the base of the DDS allow for easy installation with a standard wrench. The DDS is offered in either PEEK or titanium with a cracking pressure of 5 psi. A vacuum and fill attachment is available.

The Single Dual Seal (SDS) has an adjustable cracking pressure range of 5-15 and 15-25 psi. Materials include aluminum, stainless steel, or titanium. A vacuum attachment is available.
Our Single Seal SAE (SSS) is available in 316 stainless steel. The SSS has an adjustable cracking pressure range of 5-15 and 15-25 psi.

The Single Seal Face (SSF) is our original PRV model still used in the field for its economical and efficient design. The cracking pressure range is 5-15 psi.

DSP&L’s full ocean depth, pressure-compensated SeaBattery™ Power Module has a 30+ year history of exploring the oceans with 6V, 12V, 24V and 48V configurations.

Need to make a point with a good line? DSP&L’s SeaLasers® are ideal for scaling, aiming, and range-finding. We recommend mounting two lasers in a dual bracket with a compatible camera.

Lux Lies!

Many people know that it is much easier and less expensive to measure the lux output of a light source instead of its lumen output, but lux lies where lumens doesn’t!
The measure of the quantity of light as seen by people is called lumens.  If you have twice as many lumens, you have twice as much “light”.  The lumens measurement, if done correctly, is independent of where in the beam or how far from the light fixture the measurement is made.  The true, most honest metric of light output by an underwater light is the number of lumens exiting the fixture and traveling into the water.  

Lumens in this sense are difficult to measure.  Either the light output in all directions needs to be measured and added up, or a device called an integrating sphere needs to be used effectively adds all of the light in real time. Since this integrating sphere is quite expensive, not many light companies invest in one and therefore measure the light output of their lights with a simple and inexpensive lux-meter instead (that’s why you see lux measurement on spec sheets way more than you see a Lumen measurement).  

Lux is just lumens per square meter.  If you have a bright, narrow, highly focused spot light, you will get a very high lux values, but this really does not tell you much about how much total light the fixture is putting into the water.  Let’s give you an example, if you need to change your tyre at night at side of a dark road, would you use a flash light with flood reflector or a laser?  Of course a flood light.  However if you put a lux-meter by these two and measure them up, the laser will blow away the flood light as far as light output goes.  That’s what I meant by saying “lux lies”!

DeepSea Power & Light specify all of their lighting products by lumen output. You can depend upon DeepSea Power & Light products to be accurately specified, performing to specification and suitable for your intended application.
Contact UVS to let us assist you with selection of DeepSea Power & Light products.



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