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DIESEL ENGINE CONTROL AND GENERATOR EQUIPMENTS >> FW MURPHY Process Monitoring Instruments >> Speed/Time Sensors and Instruments
FW MURPHY Process Monitoring Instruments
Level Maintainers
Level Switches
Pressure Sensors and Instruments
Speed/Time Sensors and Instruments
- TM series Hourmeters
- ATS, ATA, ATHA, ATHS Tachometers and Tach/Hourmeters
- MT90 Digital Tachometer
- MTH6 Digital Tachometer and Hourmeter
- SHD30 / SHD30-45
- 3ST Speed Switch Relay
- MP Series Magnetic Pickups
- HD9063, OS77D, SS300 Electronic Speed Switches
Temperature Sensors and Instruments
ATS, ATA, ATHA, ATHS Tachometers and Tach/Hourmeters

The AT series tachometer is a rugged, transistorised instrument with solid-state circuitry for indication of engine revolutions per minute (RPM). It is equipped with a bracket for mounting into a standard 86mm (3-3/8 in.) dash mounting hole.

The tachometer’s full 270° sweep of the pointer gives an accurate indication on a large easy–to–read scale. The dial can be illuminated for night reading.


ATA models sense engine speed in conjunction with an engine-driven charge alternator; ATS models work with a flywheel mounted magnetic pickup. ATHA and ATHS models are also equipped with a digital hourmeter to record the elapsed running time of an engine.


  • Sensing from magnetic sensor (ATS, ATHS) or
    battery charging alternator (ATA, ATHA)
  • High visibility 0-3000 or 0-4000 RPM analogue scales,
    270° sweep
  • 0 - 100,000 hourmeter, LCD (ATHA, ATHS models)
  • Reliable air-core movement
  • Easy calibration using DIP switches
  • Through-dial lighting
  • Universal 12/24 VDC (11-28 VDC) power supply, reverse polarity protected.

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Catalogues and Technical Specs
 ATS, ATA, ATHA, ATHS Takometreler