Axle Pressure Sensing

Overview

An axle-weighing equipment manufacturer required replacement pressure transducers for vehicle air-suspension systems without redesigning its existing signal-conditioning hardware.

The challenge

The new transducers had to operate alongside existing sensors, withstand road use and connect directly to the customer's established measurement electronics.

• Match the bridge characteristics of the existing pressure transducer.
• Provide a full Wheatstone-bridge output.
• Adapt M12 sensor wiring to the existing RJ12 connection.
• Withstand vibration, moisture and changing ambient temperatures.

Our solution

Quality Lab Solutions reviewed the electrical interface, bridge resistance, pin configuration and cable requirements before preparing samples for vehicle testing.

• Specified a compatible full-bridge pressure transducer.
• Developed an M12-to-RJ12 cable arrangement.
• Matched signal and excitation wiring to the existing system.
• Supplied samples for testing on a working two-axle tractor.

Results

The transducers completed a 12-week road trial covering more than 8,000 miles in mixed weather without signal loss or water ingress. The project progressed to a 700-unit production order, followed by an urgent 100-unit delivery to maintain the customer's assembly schedule.

Customer benefits

The customer gained a compatible pressure-sensing alternative without changing its established axle-weighing electronics.

• Reduced redesign and validation work.
• Direct compatibility with existing wiring.
• Improved supply-chain flexibility.
• Production quantities supported after field validation.