Portable metered flow apparatus for calibration/bump testing

摘要

A portable metered flow apparatus for accurately providing calibration gas from a calibration gas source to a gas monitoring instrument in order to permit calibration/bump testing of the instrument comprising a regulator and a gas delivery device that includes a solenoid valve, an electronic timing circuit, means for providing power to the solenoid valve and the electronic timing circuit, a power switch for activating the electronic timing circuit, means for activating the release of calibration gas; and optionally one or more LED lights. A method for calibration/bump testing of a gas monitoring device utilizing the portable metered flow apparatus is also provided.

主权项

1. A portable metered flow apparatus for accurately providing gas from a gas source, the apparatus comprising:
a) a regulator having two opposing ends, a passageway that extends through the regulator between the two opposing ends, the first end of the regulator including a regulator inlet and the opposing end of the regulator including a regulator outlet, and a pressure regulator located in the passageway between the regulator inlet and the regulator outlet, the regulator inlet configured to be capable of being connected to the gas source and form a connection adapted to allow passage of the gas into the regulator, b) a gas delivery device comprising a hollow case having a case inlet and a case outlet and having disposed within said case:
A) a valve having an entrance for the gas and an exit for the gas, the entrance for the gas configured to connect the valve to the regulator outlet, the valve adapted to be capable of allowing passage of gas through the valve when the valve is in an opened configuration;B) an electronic timing circuit operably connected to the valve and configured to open and close the valve, the electronic timing circuit configured to open the valve for a time interval and then close the valve after the time interval, wherein the electronic timing circuit is enclosed within the hollow case;C) a power delivery element adapted to power the portable metered flow apparatus,D) a power switch configured to be capable of activating the portable metered flow apparatus;E) an activation trigger adapted to release the gas from the regulator,F) a first light adapted to illuminate when the apparatus is ready for operation and blink when the calibration gas is being dispensed; andG) a second light adapted to illuminate when the power delivery element needs to be replaced or recharged, wherein the gas delivery device is in the shape of a cylinder and the power switch, first light, second light and activation trigger are all disposed at the end of the cylinder opposite the end adapted to be connected to the regulator.