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> Ir-18M multi-speed servo chart recorder
Ir-18M multi-speed servo chart recorder
Model IR-18M Multi-Speed Servo Chart Recorder
This Chart Recorder Heathkit was assembled in 1971. It was working when it was last used in 2005. Included are two rolls of paper and the Assembly Manual.
I am selling this for my dad...feel free to ask questions, but keep in mind it may take a little longer than typical to respond if I need to forward your question to him.
Chart Paper - Grid Width: 10" - Length: 140-foot roll - Markings: 0-100, right to left.
Chart Speed - 12 speeds, pushbutton selected. 5, 10, 20, 50, 100, 200 sec/inch and 5, 10, 20, 50, 100, 200 min/inch.
Chart Span - Two fixed ranges: 1 mV and 10 mV.
Pen - Standard fountain pen, cartridge type.
Balancing Time - Approximately 0.1 seconds per inch, 1 sencond full scale (10").
Input Circuit - Self-balancing potentiometer.
Input Resistance - Exxentially infinite at null.
Line Freguency Rejection - 130 dB in common mode.
Floating Input - +/-100 Vdc maximum with respect to ground.
Overall Error - Less than 1% of full scale.
Dead Zone - Less than 0.5% of full scale.
Nonlinearity - Less than 0.5% of full scale.
Maximum Recommended Sources Resistance - 100k ohms
Reference Sounce - Zener-regulated supply.
Modulation Frequency - Approximately 240 Hz.
Power Requirements - 120/240 volts, 60 Hz; 14 watts. (120/240 volts, 50 Hz; 16 watts)
Fuse - 3/16-ampere, slow-blow (120 Vac). 1/10-ampere, slow-blow (240 Vac).
Dimensions - 15" wide x 6" high x 9-1/8" deep.
