Murphy Digital Tachometer/Hourmeter with Adjustable Overspeed Trip Point and Backplate - SHD30-45

The Murphy Digital Tach/Hourmeter SHD30-45 is a microprocessor-based tachometer with 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. It has a panel-mounting design, plastic enclosure that is 5-1/16 (129 mm) long and 4-1/4 in. (108 mm) high and backplate with studs to mount like an OPLFC.

The five-digit, liquid crystal display is updated every second. The run hours, overspeed set point and current pulses per engine revolution can be displayed by manipulating the membrane switches. Run hours can be displayed even after power is lost. The run hours display can be configured to alternate with the RPM display.

PRODUCT FEATURES:

• Normally open and normally closed overspeed alarm or shutdown switch (standard)
• Accurate to ±0.5% of display reading
• Hours can be preset and reset to zero
• Approved for Class I, Division 2,Groups C & D hazardous areas

PRODUCT SPECIFICATIONS:

• Murphy Part No.: SHD30-45
• Backup Batteries: 2 replaceable, long life Lithium batteries, Panasonic CR2032 or equivalent, 3 V, 220 mAh power. Shelf life expectancy 10 years
• Operating Temperature: -4° to 158°F (-20° to 70°C)
• Overspeed Output:

• Connected to S.C.R. (Silicon Controlled Rectifier) Terminals: 0.5 A, 350 VDC continuous
• Connected to Form C Relay Terminals: Relay Contact, 0.5 A, 30 VDC, 125 VAC resistive

• Tachometer Accuracy: ±0.5% of the display reading or ±1 RPM whichever is greater
• Hourmeter Range: 0 to 65535 hrs
• Hourmeter Accuracy: ±15 minutes per year
• Laboratory Approvals: CSA (Canadian Standards Association) approved for Class I, Division 2, Groups C & D hazardous areas
• Shipping Weight: 1 lb ( 0.5 kg)
• Shipping Dimensions: 9-1/4 x 8-1/4 x 5-1/4 in. (235 x 210 x 133 mm)

APPLICATIONS:

• Gas Compressors
• Oil Field Equipment
• Industrial Engines
• Generators