Technical note: Food texture-modification of the shear press using a strain gauge system
07T14:22:39Z September 2015
The shear press is an instrument for measuring food texture (Kramer, Burkhardt &Rogers, 1951). The original model was introduced in 1950 and it was later modified for electrical indicating and recording (Decker et al., 1957). A new more versatile and precise model was introduced in 1956 (Kramer & Twigg, 1958). In this instrument force is measured by a maximum-reading dial gauge fitted across the vertical diameter of a proving ring. If time-force texture graphs are required, a transducer can be fitted across the ring in place of the dial gauge to give a print-out on a strip chart as the sample is tested. This note reports an alternative and relatively cheap system for converting a dial reading shear press to a recording model. Strain gauges are attached to the proving ring and the electrical output is amplified and is recorded on a strip chart in the form of a texturegram. The dial gauge remains in place to indicate maximum deflection. The system is simple and easy to construct.
Type of Material
International Journal of Food Science and Technology
Status of Item
This item is made available under a Creative Commons License