Forgot to mention... most pressure sensitive paper is just a bas paper coated with an opaque wax. The recorder stylus cuts (or melts) through the wax and shows the paper color. On old paper, the wax can become brittle and flake off. I have also seen some 40+ year old paper that still worked well.
Paper can be found for most old chart recorders, but can be VERY expensive. For instance the paper used in Tektronix 1502/1503 TDR's can be had for only $36 a roll. It is just thermal paper with a grid. The trick is that it has a timing track punched along one edge. EKG/ECG paper that fits can be had for $1 a roll. To use it, you have to cobble together a signal that simulates the timing track. Without the pulses, the machine thinks that the paper is out or jammed and stops. _________________________________________________________________ Rediscover Hotmail®: Get e-mail storage that grows with you. http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Storage2_042009 _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
