MURPHY SHD30 Digital Tachometer and Hourmeter

MURPHY SHD30 Digital Tachometer and Hourmeter is a microprocessor-based digital tachometer with an hourmeter and an overspeed trip point. The trip point can be connected as either a form “c” relay output or as a normally open SCR output for alarm or shutdown on overspeed. The five-digit, liquid crystal display is updated every second. SHD30 receives power and RPM data from either a magnetic pickup or a capacitor discharge (CD) ignition. The hourmeter is adjustable to a preset time and resettable to zero. Should power be lost, on-board batteries maintain the run hours display and allow for resetting the overspeed relay output.

Approved for Class I, Division 2, Groups C & D hazardous areas.
SHD30 digital tachometer and hourmeter by Murphy.
Panel-mounting design
Plastic enclosure (5-1/16 (129 mm) long 4-1/4 in. (108 mm) high)
RPM data and power supplied by magnetic pickup or capacitor discharge (CD) ignition
3 to 666 Hz ignition frequency range:
1 to 10 kHz magnetic pickup frequency range
0 to 65535 hours hourmeter range