Load recording on pneumatic suspension vehicles - using suspension press. via proportional press. valve and transducer to operate electrical indicator

摘要

A recording arrangement for the loading on a vehicle with air suspension, esp for recording the number of people travelling on a bus with pneumatic suspension. It uses a pneumatic weighing unit to enable recording at desired instants or on a continual basis. A propertional press valve uses the press of the pneumatically separable air suspension circuit. The valve output press is proportional to the average air suspension press and is used to operate a press to current or voltage converter connected to an electrical indicator or recorder.