BPFT2 pedal force transducer BPFT

BPFT2: low-profile pedal force transducer, 2.2 kN

The BPFT2 is a precision strain gage load cell that attaches directly onto a vehicle's brake pedal. It is designed for the brake pedal of most cars: its low profile and size closely duplicate the shape and feel of a production pedal, with minimal added height and weight. The capacity is 500 lbf (2.2 kN), with high accuracy for on-center and off-center loading. A four-arm bridge of 350 Ω gives an output of 2.75 mV/V nominal at up to 10 V DC or AC rms, with non-linearity of 0.5 % and hysteresis of 0.1 % of full scale. It operates from −40 to 149 °C, weighs 350 g and has a 3.05 m cable.

To fit it, remove the rubber pad of the pedal and tighten the single retaining bolt. The plate is 113.03 × 50.8 mm (4.450 × 2.000 in), for a minimum pedal width of 72.4 mm (2.85 in). The standard clamp set takes pedal heights of 38.1 to 50.8 mm and the extended set 50.8 to 76.2 mm; units ship with the standard set, and the customer changes clamp sets easily. Other clamping width ranges are available from the factory.

Paired with the Transducer Display Module (TDM), it quickly verifies brake loads. For pedals narrower than 72.4 mm, for example on manual-transmission vehicles, the BPFT3 has a smaller plate, and the BPFT a round body of Ø 50 mm that also fits parking brake pedals.