What relay is used in mercury?
mercury displacement relay
A mercury relay (mercury displacement relay, mercury contactor) is a relay that uses mercury as the switching element. They are used as high-current switches or contactors, where contact erosion from constant cycling would be a problem for conventional relay contacts.
How do you dispose of mercury relays?
Small droplets of mercury can be picked up by the damp sponge or towel and deposited into the sealable container. Once finished, place all the contaminated material into the sealable container and seal the container closed. incinerated. It should be sent to an approved mercury recycling center.
Are mercury switches illegal?
In 2001, California passed a law called SB 633. This law: makes it illegal to sell certain items that contain mercury, encourages people who dismantle, recycle and repair vehicles to remove mercury switches, and.
Why is mercury used for tilt switch?
When the switch is tilted in the appropriate direction, the mercury touches a set of contacts, thus completing an electrical circuit. Tilting the switch in the opposite direction moves the mercury away from that set of contacts, breaking that circuit.
Is mercury banned in California?
Mercury Control Laws in California California law restricts the level of mercury in some products (such as general purpose lights and packaging), and bans the sale of other mercury-containing products outright (such as mercury-containing thermometers, blood pressure cuffs, etc.).
Is liquid mercury illegal to have?
California 2005 Bans the sale of mercurial sphygmomanometers and other mercury-added products. Connecticut July 1, 2006 Bans the sale of all devices containing more than a specified amount of mercury. Indiana 2001 Bans mercurial thermometers and the sale of pure elemental mercury and mercury novelty products.
Can you still buy mercury switches?
Automobile manufacturers once used mercury switches for lighting controls (for example, trunk lid lights), ride control, and anti-lock braking systems. Scrapped automobiles can leak mercury to the environment if these switches are not properly removed. Since 2003, new American-built cars no longer use mercury switches.
Do old light switches have mercury?
Older, more specialized equipment is more likely to contain mercury switches. Plunger or displacement relays also are used in high-current lighting and commercial and industrial cooling and heating equipment. These switches can contain up to160 grams of mercury. Discarded mercury switches are “universal waste”.
Is owning mercury illegal?
Effective January 1, 2003, the California Mercury Reduction Act banned the sale of many products containing mercury. Even though they are banned from California’s marketplace, these mercury containing products still are frequently found in homes.
Why is mercury banned?
Talks have begun in Geneva on an agreement to ban the use of mercury. The metal is a threat to the health of millions, especially in developing countries. Mercury is a highly toxic heavy metal which gets into the food chain via water, where it concentrates particularly in the bodies of fish.
Can you pick up mercury with a magnet?
For safety sake,clean up all mercury spills immediately with MERCURY MAGNET. turns liquid mercury into a solid non vaporizing form. This solidified amalgam can be easily picked up using a common magnet.
Is mercury legal to buy?
Mercury is legal for sale and purchase within the United States, with very few restrictions. Export of mercury is limited to 1g per order and Luciteria Science cannot ship to countries under trade embargo or interdiction by the USA.