Sansel instruments & controls manufactures data logger. The data loggers are available with salient features like 16 character x 1 line lcd display; input tc, rtd, volts, mv, 4-20 ma; linearised high accuracy thermo couples; rs 232 interface via pc to store date; computer interface software; 8 channel inputs; optional web based data logging; and different applications to read and record, pressure, flow, humidity, temperature, etc.