Control technology manufactures a digital strip chart recorder, ct scr 80. Generally the strip chart recorders currently in use, are plagued by the doubtful reliability of their writing medium - ink pen, ink stylus, etc.However, this digital strip chart recorder addresses the reliability issue by using a standard, easily available, rugged and cost effective dot matrix printer as the writing medium. The recorder can be configured to accept any type of input, eg, output from a load cell, pressure transducer, thermocouple, rtd, etc. The analog signal is digitised using a precision adc, stored for a specified length of time and plotted once every 30 minutes. The chart is plotted on plain paper using a standard dot matrix printer like tvs novo 130, tvs msp 240, epson lx 80, etc. The printer will be on only during the printing/ plotting operation. In addition to the parameter being plotted, the chart also provides real time data. The chart length is fixed as 210 mm.
