Recording charts perform the dual function of providing a graphic display at the point of data collection and a permanent record of these data or events for future validation. The display and recording of data and events pertinent to tracking operations or conditions such as process control, temperature, humidity, pressure, voltage, current, natural gas flow, motor truck operation and many other parameters is an important activity. Recording instruments are designed to produce high quality information and charts must be of an equally high quality to preserve the information.
Chart Recording Paper
Recording chart types vary according to the instrument they are designed to fit. General types are strip (roll), dial (circular), fanfold and rectangular. Graphic displays take several forms. These include ink writing, heat sensitive, pressure sensitive and electro-sensitive.