Q: Why does the ADF (Auto Darkening Filter) on the Tigerhood Futura welding helmet have only 2 sensors compared to the 4 sensors used in many competitors’ welding helmets?
A: Using 4 sensors in an ADF is considered old technology. If a manufacturer is using 4 sensors, it usually means that they are having difficulty with “angle dependency.” This is the angle at which light enters the sensors to activate the liquid crystals.

Q: What are the advantages of using 2 sensors instead of 4 sensors?
A: When using 4 sensors, each one has to be positioned almost perfectly in front of the light source to trigger the liquid crystal and darken the lens. This is not a factor with the FM2999BV913SR, which uses 2 “wide angle” sensors. This allows the sensors to react to the light source from almost any angle. With the FMPBV913, one of the sensors can be covered, or the light source could be blocked, and the other sensor will react to the light and darken the lens. The Fibre Metal sensors work independently of each other. The lens is solar powered. Because batteries are not needed, cost is reduced. The FMP ADF lens does not need direct light to darken. It picks up light sources from almost a 90 degree angle. Our lens provides constant UV/IR protection whether the lens is on or off, light or dark.

Q: What is the purpose of the “sensitivity adjustment”?
A: This is a manual adjustment, located on the inside of the ADF, to protect it from the harsh welding environment. This adjustment reduces the effects of extraneous light on the sensors. Adjustments can be made to the welding application. The “smart” lens will only darken to your arc.

Q: What is the viewing size of the FMP ADF lens?
A: This lens is approximately 7 square inches in size.

Q: What shades levels are available for this ADF lens?
A: The BV913 lens provides shade levels between 9 and 13.

Q: What is the warranty for the FMPBV913?
A: The warranty is 2 years from the date of shipping.

Q: What is SEI?
A: The Safety Equipment Institute (SEI) is an independent, nonprofit organization certifying safety and health equipment through a unique two pronged approach. Contnuous product testing by independent labs assures conformance to the highest current product safety standards. Quality assurance audits by independent consultants ensure manufacturers maintain the highest standards of quality control. Choosing SEI certified products is your assurance of consistent quality control. - Updated: April 30, 2001