Bus Applications Using Universal Level Sensors

Bus manufacturers (including City, Tour, and Luxury buses) require feedback on the status of all the fluid level containers and reservoir tanks on their vehicles, but they struggle with the different styles and types of sensors required to provide that feedback.

  • Is the coolant reservoir full enough to keep the engine cool in the heat of the summer? 
  • Does the power steering fluid reservoir have enough fluid to control the vehicle safely? 
  • Are the onboard water storage tanks full enough for the next trip?
  • Are the onboard dirty water tanks too full until the next maintenance event?
  • Is there enough brake fluid to stop the vehicle safely?
  • Is there enough engine oil to properly lubricate the engine?

With all these different applications with different fluids, the manufacturer needs to buy and stock several different styles of these liquid level sensors.  Many different part numbers, in lower volume, lead to increased costs and adds to the warehousing of more parts than needed.

Application Challenge:

Finding a single liquid level sensor, with no moving parts, that will reliably detect water, oil, essential fluids, coolant as well as fuel and will endure the environment of a bus. Traditional liquid level sensors (that can detect all fluids) rely on a float that will physically move up and down.  The sensor is calibrated to the specific gravity of the fluid.  It will operate differently in oil as compared to water.   Also, these traditional float-style sensors have moving parts.  When they are mounted in a high vibration and shock, environment, like a city bus, the floats can become damaged and malfunction.

Application Solution:

Gems Sensors’ NEW ULS-100 Universal Level Sensor

Based on Gems new universal level sensing technology, the new ULS series does not rely on the specific gravity of the fluid to detect its presence or absence.  It will reliably detect most any fluid.  Along with its robust housing and wide operating temperature range, the new ULS is perfect for all these varying fluid applications like the ones found on a City, Touring or Luxury bus.




Features & Benefits: 

  • Durable sealed design – IPX7 & IP6k9k
  • High-pressure range
  • Developed for the most rugged aqueous, oil, and hydrocarbon applications
  • Tolerates coolant coating – no false triggers due to old, dried on fluid
  • Wide temperature range
  • Small size – under 3˝ (75 mm) total length

Similar Products:

  • XM/XT-800:  Continuous Liquid Level Sensor for Fluid Storage Tanks
  • XM/XT-700: Continuous Liquid Level Sensor for Fluid Storage Tanks
  • 3100/3200:  Pressure Sensor for Hydraulic Systems
  • 1100:  Pressure Sensors for Air Compressors and Engine Oils
Learn more about our ULS-100 >     Get help with your Application now! >