E-Mail: sales@spare.it

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Spare sas - Strumentazione sistemi e sensori
Via Pietro Mazza, 48 - 27057 Varzi - Pavia - Italia
tel.: ++39-0383-54.51.51 - fax: ++39-0383-54.50.51

Introduction:
Applications who will require to measure pressures lower than 2 kg/cm² (0,2 MPa is the minimum readable range offered by LLLW type film), could be satisfied by the combined use of LLW type Prescale film (super low pressure), used in conjunction with a special elastic mat. By mean of such pair of items is possible to measure pressure ranges from 100 gr/cm² to 5 kg/cm²). The measuring principle is very simple since the mat is equipped with several regularly spaced conical protusion who stay in contact with the LLW Prescale film. When pressure is acting on the Prescale mat, the summit contact area of mentioned protusion change, increasing diameter as pressure increase. These summit area broke the film capsule and consequntly the film will be impressed with as bigger dots, as bigger the pressure applied. The size of impressed dots could be compared with a reference table in order to ensure the measured pressure value.
 

Prescale mat method of use:
Depending from your application cut appropriately (by required size and shape), and place in position the LLW super low pressure Prescale film, and place the Prescale mat over the film pair, as shown by side figure. In placing correclty the A and C films please refer to supplied instruction sheet.  Apply pressure and when completing your phenomenon under measurement, immediately peel of both A and C LLW Prescale films and visually compar the impresse red dots diameter with the supplied pressure conversion dot mark table.
 

Technical informations:
- measuring range: from 0.1 kg/cm² to 5 kg/cm² (0.01 MPa to 0.5 MPa)
- prescale mat dimensions: 270 mm (w) x 400 mm (l) x 3.7 mm (thick)
- typical LLW Prescale film thickness: 0.2 mm (A + C films)