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DYNALCO MTH103E Digital Tachometer/ Hourmeter
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The Dynalco Tachometer/Hourmeter/Overspeed Trip MTH-103E 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.
PRODUCT FEATURES:
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:
Dynalco 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.