Precision Digital PD138 - Manual (Page 5)

PD138 Minimux
®
II Temp & Process Scanner Instruction Manual
5
INTRODUCTION
The Minimux
®
II is a microprocessor-based eight channel analog input
scanner/multiplexer and annunciator that provides low-cost automatic
switching for multi-point display and alarm systems. Each Minimux
®
II
can automatically switch up to eight inputs to another device such as a
digital panel meter, controller, or PLC. Multiple units can be connected
together to scan an unlimited number of points. Front panel push-buttons
allow for easy programming of independent adjustable dwell times as
well as rapid channel skipping. The built-in annunciator logic can detect
and indicate which input signals are in alarm condition. The built-in horn,
alarm relay, and front panel LEDs are sure to catch the operators
attention. Signal switching is done with reed relays making the Minimux
®
II ideal for switching thermocouples, RTDs, control loops, and AC & DC
signals.