_1. INTRODUCTION_ _This knowledgebase article explores various avenues to take if you do not believe your pneumatic instruments are functioning correctly. Instruments that use pneumatic technology are those such as pneumatic Piezometers and pneumati...

PRE-LOADING OF PRESSURE CELLS AND ITS EFFECTS ON CALIBRATION VALUES _FIGURE 1. P6 PRESSURE CELL_ _1. INTRODUCTION_ _A Vibrating Wire Pressure Cell (see Figure 1.) consists of a circular or rectangular flat jack, formed from two sheets of steel...

_VIBRATING WIRE UNITS OF MEASUREMENT_ _1. INTRODUCTION_ _This knowledgebase article outlines the units of measurement used by Soil Instruments. These include hertz, linear and period readings and what the units are actually showing _ _2. THE V...