MOBILE CALIBRATING APPARATUS FOR CONTROL OF VOLUME METERS FOR LIQUID, ESPECIALLY PROPELLANT PUMPS IN THE TRAFFIC SECTOR

摘要

The invention relates to a calibration apparatus for adjusting fuel pumps, particularly in the road sector. This apparatus is placed on a vehicle, specifically on a trailer. The apparatus has at least one gauge (10) for measuring a given quantity of gas, the gauge being arranged in a gimbal suspension (49-52) which is elastically yielding (48) and being locked during operation and during transport by means of support rods (53-59). A gauge (10) is divided into a lower measuring chamber (11) and a top foam part (14) which is connected to the measuring compartment (11) by a neck (12) with a glass for measuring (13) and indicia for reading (22). The top foam part (14) is vented (35-37) to a reception tank (5) placed at the bottom of the apparatus (1), and the gauge (10) can be connected via a discharge valve remotely controlled (20) to the reception tank (5) from which gas can be pumped and set aside in a standby tank (64) at the top of the apparatus (1). From there, gas may be returned to the storage tank of the service station by means of a pipe (72) either with the influence of gravity or using a pump. An electric generator (78) which can be driven by a belt transmission (79-84) connected to a vehicle wheel (2) can charge an accumulator (87), and a pressure vessel (88, 89) containing a non-flammable gas under pressure, such as carbon dioxide, handles the remote control of the discharge valve (20). A control device for controlling in time the functions of the apparatus is then proposed.