Abstract: An erythema meter includes a probe, a light source of one or more specific probing and reference wavelengths, and an acoustic detector which determines the level of erythema present in the dental pulp chamber of a tooth. The probing and reference wavelengths are delivered in pulsed or amplitude modulated fashion through the probe, thereby permitting electronic identification and filtering of the received data. The absorption of the light wave raises the temperature of the material in the tooth and causes it to expand, thus creating tiny shockwaves which are picked up with the acoustic detector, revealing information on the location of blood and the quantity of blood inside the tooth. The erythema meter accurately measures the erythema, or inflammation, within the tooth in a qualitative and quantitative manner.

Abstract: A bracket and method for use in mounting a transducer/antenna unit in an underground meter box of the type which contains a remote-reading water meter. The box has a peripheral ledge defining an access opening that seats a lid. The bracket comprises a pair of beams which are spaced-apart sufficient to enable the installation and support of a cap containing the antenna. A pair of right angles on the beam ends are seated between the ledge and lid to suspend the beam and therefore the antenna at a predetermined height below the lid. The height is sufficient for holding the antenna at a position which is optimum for radiating RF signals for pick up by an above-ground remote receiver.

Abstract: A bracket and method for use in mounting a transducer/antenna unit in an underground meter box of the type which contains a remote-reading water meter. The box has a peripheral ledge defining an access opening that seats a lid. The bracket comprises a pair of beams which are spaced-apart sufficient to enable the installation and support of a cap containing the antenna. A pair of right angles on the beam ends are seated between the ledge and lid to suspend the beam and therefore the antenna at a predetermined height below the lid. The height is sufficient for holding the antenna at a position which is optimum for radiating RF signals for pick up by an above-ground remote receiver.

Abstract: An erythema meter includes a probe, a light source of one or more specific probing and reference wavelengths, and an acoustic detector which determines the level of erythema present in the dental pulp chamber of a tooth. The probing and reference wavelengths are delivered in pulsed or amplitude modulated fashion through the probe, thereby permitting electronic identification and filtering of the received data. The absorption of the light wave raises the temperature of the material in the tooth and causes it to expand, thus creating tiny shockwaves which are picked up with the acoustic detector, revealing information on the location of blood and the quantity of blood inside the tooth. The erythema meter accurately measures the erythema, or inflammation, within the tooth in a qualitative and quantitative manner.