Teledyne 9060L - Zirconium oxide flue gas oxygen analyzer - Manual (Page 22)

Operational Theory Model 9060L
Teledyne Analytical Instruments 22
The digital concentration signal along with input from the front
panel buttons (KEYBOARD) is processed by the micro-controller, and
appropriate output signals are directed to the display and alarm relays.
The same digital information is also sent to a 12-bit digital to analog
converter (DAC) that produces the 0-10 VDC analog concentration
signal and the 0-10 VDC analog range ID output. A current to voltage
converter (E–I CONV) produces the 4-20 mA DC analog concentration
signal.