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Dynalco MTH-103E Tachometer/Hourmeter/Overspeed Trip

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Dynalco Tachometer/Hourmeter/Overspeed Trip - MTH-103E

Product Condition: NEW
Dynalco MTH-103E Tachometer/Hourmeter/Overspeed Trip
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

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The Dynalco MTH-103E Tachometer/Hourmeter/Overspeed Trip is a microprocessor-based 5-digit tachometer, hourmeter with output trip. The trip can be programmed to activate on overspeed, underspeed (Class C) or hours. It is the new version of Dynalco MTH-103D and comes with a keypad that replaces the old push button, making programming easier and quicker. This unit may be pickup-powered or DC-powered.


  • Selectable overspeed, underspeed (Class-C) and hours trip
  • Both signal and power may be derived from magnetic pickup
  • High accuracy: 5-digit display, 1 rpm resolution, 100,000 hour range
  • Field configurable with front keypad for any number of pulses per revolution, trip point value, and for preset / reset hours
  • Displays speed, hours, and setpoints on separate screen
  • Displays Alarm Log history
  • Fast overspeed reaction time of 100 msec
  • Backlit display when DC powered
  • Standard SAE case size fits engine panels with 3-3/8" openings
  • High shock and vibration resistance. Gasketed and spray proof
  • Highly resistant to electrical noise

Product Specifications:

  • Part No.: MTH-103E
  • Description: Tachometer/Hourmeter/Overspeed Trip
  • Power: Magnetic pickup or 9-30 VDC
  • Display: Alphanumeric LCD
  • Input Signal Frequency: From 10 to 13,000 Hz
  • Minimum required input signal voltage is 4.0 VAC when pickup powered and 1.5 VAC when DC powered
  • Maximum permissible input signal is 15 VAC
  • Tachometer Accuracy: 1 RPM resolution, within 0.2% under all combined environmental conditions
  • Hourmeter: 100,000-hour range (99,999), 1-hour increments. Display is visible and time accumulates only when the signal is applied to terminals A and B
  • Trip: Setpoint value is field-settable directly in RPM or hours (counts up or down). Normally open solid-state contacts at terminals 5(+) and 6(–) close on trip.
  • Reaction time of 0.1 seconds. Maximum continuous contact rating of 0.15 amps, 400 VDC
  • Trip Accuracy: ±1 unit, maximum
  • Hourmeter Accuracy: 0.2% of reading. Retains count in memory when signal or power is removed.
  • Environment Temperature: Operating: –5 to +175°F (–20 to +79°C) Storage: –40 to +195°F (–40 to +90°C)
  • Vibration: Modified MIL-810E (N3)
  • CSA Certification:
  • Class I, Division 1, Groups A, B, C, and D; When Pickup Powered: Dynalco magnetic pickup M203, M204 or M205 must be used.
  • Class I, Division 2, Groups A, B, C, and D; When 9 - 30 VDC Powered: Dynalco magnetic pickup M201, M202, M203, M204, M205, M207, M208, M231, M233 or M281 must be used to provide the speed signal.

Additional Information

Product Condition NEW
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