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Magtrol Hysteresis Dynamometers
1.2
FEATURES OF THE HYSTERESIS DYNAMOMETER
All Magtrol Hysteresis Dynamometers (HD and ED Series) feature the following:
•
Hysteresis Braking System: The dynamometers do not require speed to create torque, and
therefore can provide a full motor ramp from free-run to locked rotor along with precise
torque loading.
•
Air Flow Sensor: Any Magtrol Hysteresis Dynamometer that is internally ported for
compressed air and/or blower cooling contains an air flow sensor that provides protection
against overheating and operator error
Standard Torque Units: English, metric and SI are available.
•
Easy Calibration
•
Unique features of each series are listed below.
1.2.1
HD S
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Magtrol's HD Series Dynamometers are versatile and ideal for testing in low to medium power
ranges. Features include:
•
Accuracy: ±0.25% to ±0.5% full scale, depending on size and system configuration.
•
Custom Dynamometers: For special torque and speed requirements.
Encoder Switch: Optional feature that allows the user to switch between a 60 and 600-bit
•
encoder or a 60 and 6000-bit encoder.
1.2.2
eD S
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Magtrol's ED Series Dynamometers are high performance dynamometers specifically designed to
address the severe, high vibration conditions inherent in internal combustion engine testing. Features
include:
Accuracy: ±0.25% full scale.
•
High Speed Capabilities: 12,000 to 25,000 rpm, depending on model.
•
Rugged Stainless Steel Shaft: Larger shaft for additional strength.
•
•
Specially Reinforced Load Cell: Stainless steel pin used at contact point to prevent
premature wear from excess vibration.
Gusseted Pillow Blocks: Adds additional front and rear support.
•
Brake Cooling: Blower cooled to maximize heat dissipation.
•
9
Chapter 1 – Introduction
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