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Magnetic Powder Dynamometers/Powder Brake Dynamometers
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Magnetic Powder Dynamometer — Full Torque from Zero Speed, 2 para 2,000 Nm

Discover the capabilities of our Magnetic Powder Dinamômetro (also known as Powder Brake Dynamometer), designing for precise measurement and control of torque, velocidade, and power in various industrial applications. Therefore dynamometers are essential for testing machinery, motors, and other rotating equipment, ensuring that your systems are operating efficiently and within specifications.

What is a Magnetic Powder Dynamometer?

A Dinamômetro de Pó Magnético is a torque measurement tool that utilizes the frictional properties of magnetic powder to generate a controller, which loads on a rotating shaft. In addition It is widely use in torque measurement, power absorption, e dynamic braking in testing systems. furthermore the dynamometer’s friction force is adjustable and can control electronically, making it ideal for high-precision tests in various industries.

Specifications of Magnetic Powder Dynamometer​:

Dinamômetro de Pó Magnético

Magnetic Powder Dynamometer/ Powder Brake Dynamometers Production description:

The solution of Magnetic Powder Dinamômetro is a testing device that uses magnetic powder to generate braking torque. This dynamometer is particularly suitable for testing motors, transmissions, and machinery that require high torque at low or medium speeds. It provides full torque at zero speed and offers precise control over braking force.

Operating Principle

  1. Magnetic Powder Technology: Fine magnetic powder is placing between the rotor and stator.
  2. Electromagnetic Field: Electrical current through the coil generates a magnetic field.
  3. Torque Generation: Magnetic powder changes its properties under the magnetic field, creating smooth braking torque.
  4. Frictionless Operation: Torque is transmitting without mechanical contact, reducing wear.
  5. Precise Control: Torque is infinitely adjustable via the excitation current.

Product Range:

  1. Torque Range: 1 Nm para 1000 Nm (depending on model).
  2. Power Absorption: 250 W to 48 kW (short-term or continuous operation).
  3. Speed Range: Até 4000 RPM for most models.
  4. Cooling Options:
    • Air-cooled for compact setups.
    • Water-cooled for high-power applications.
    • Compressing air or blower cooling for extending durability.
  5. Accuracy Ratings: ±0.2% to ±0.5%, depending on size and configuration.
  6. Compact Design: Low inertia and dynamically, which balances rotors ensure stable performance.

Test Capabilities

  1. Torque Testing: Measures real-time torque output with high precision.
  2. Speed Testing: Evaluates motor performance across various speeds.
  3. Power Testing: Calculates input and output power for efficiency analysis.
  4. Efficiency Testing: Determines energy conversion rates under load conditions.
  5. Temperature Rise Testing: Monitors heat generation during operation.
  6. Load Characteristics Testing: Analyzes motor performance under varying loads.
  7. Durability Testing: Assesses long-term reliability under continuous operation.
  8. Starting Torque Testing: Measures motor startup characteristics at standstill

Advantages

  1. Provides full torque even at zero speed, ideal for low-speed applications.
  2. Frictionless operation reduces wear and maintenance costs significantly.
  3. Stable braking torque ensures consistent test results across all conditions.
  4. Multiple cooling options support extended operation in high-power setups.
  5. Compact design with high accuracy makes it suitable for diverse industries.

Testing Measurement Ranges(all the parameters can be customized)

Dinamômetro de Pó Magnético

Key Features and Applications of Magnetic Powder Dynamometer/ Powder Brake Dynamometers:

Key Features of the Magnetic Powder Dynamometer

  • Precise Torque Measurement: Our dynamometer offers highly accurate torque measurement for both low and high-speed operations.

  • Wide Range of Power Absorption: Capable of absorbing a wide range of power outputs, making it suitable for a variety of testing scenarios.

  • Adjustable Load Capacity: The load applies by the dynamometer is adjustable, making it ideal for testing under different operational conditions.

  • Non-Contact Measurement: The magnetic powder use in the dynamometer operates without direct contact, which reduces wear and tear and ensures long-term stability.

  • Fast Response Time: With a high-speed response time, the system can track rapid changes in torque, making it suitable for dynamic applications.

  • Minimal Heat Generation: Due to the efficient frictionless design, heat buildup is minimized, ensuring optimal performance over extended testing periods.

  • Compact and Robust Design: The compact size allows for easy integration into testing setups, while the construction ensures durability in demanding testing environments.


Applications of the Magnetic Powder Dynamometer

In addition Magnetic Powder Dynamometers are commonly, which uses in several industries for the testing of various machines, such as:

  • Automotive Industry: Application for testing engines, transmissions, and other automotive components for torque performance.

  • Aeroespacial: Ideal for evaluating power systems, motors, and components used in aviation and space technology.

  • Industrial Machinery: Use in industrial testing environments to measure torque in motors, generators, and machinery.

  • Renewable Energy: Suitable for testing wind turbines and other power-generation equipment.

  • HVAC Systems: Utilize in testing HVAC motors and systems for energy efficiency.

Multi Dynamometers Solution

Solução de múltiplos dinamômetros

Dinamômetro de Histerese

Dinamômetro de Histerese

Dinamômetro de Pó Magnético ECF

Dinamômetro de Pó Magnético

Dinamômetro de freio por corrente parasita

Eddy Current Dynamometer

Frequently Asked Questions — Magnetic Powder Dynamometer

What is a magnetic powder dynamometer?

A magnetic powder dynamometer uses fine magnetic powder trapped between a rotor and stator to transmit and control braking torque. When an electrical current flows through the coil, the magnetic field causes the powder particles to form chains that resist rotor rotation. Torque is proportional to excitation current and is fully controllable from zero to maximum rated value, including at zero RPM.

What torque range do EconoTest magnetic powder dynamometers cover?

EconoTest ECF series covers torque from 2 Nm (ECF2, 80 C, air-cooled) para 2,000 Nm (ECF2000, 15,000 W continuous, water-cooled). The full range includes: 2, 5, 10, 20, 50, 100, 200, 300, 500, 1,000, e 2,000 Nm models. Models below 20 Nm são refrigerados a ar; models of 20 Nm and above are water-cooled.

What is the maximum operating speed for magnetic powder dynamometers?

EconoTest ECF series magnetic powder dynamometers operate at 2,000–5,000 RPM depending on the model. This relatively low speed limit is due to heat generation from powder friction at high speeds. For testing above 5,000 RPM, an eddy current or hysteresis dynamometer is recommended. Magnetic powder dynos are optimized for production line testing and low-to-medium speed applications.

Does the magnetic powder dynamometer provide full torque at zero speed?

Sim. Like hysteresis dynamometers, magnetic powder dynamometers deliver full rated torque at zero RPM. This makes them suitable for starting torque testing, locked rotor evaluation, and servo/geared motor testing where static load holding and low-speed high-torque measurement are required.

What applications are magnetic powder dynamometers best suited for?

ECF series magnetic powder dynamometers are best suited for: servo motor and servo drive testing, geared motor and gearbox performance validation, wiper motor and small automotive motor testing, starter motor testing (up to medium power), fan and blower motor testing, and production line end-of-line testing where high duty cycle, consistent torque, and fast test cycles are required.

How long does the magnetic powder last before replacement?

Magnetic powder degrades over time through heat exposure and mechanical stress; the replacement interval depends on duty cycle, operating speed and temperature. High-temperature or high-speed operation accelerates degradation. EconoTest recommends monitoring torque ripple as an indicator of powder condition. Replacement powder and service are available.

What is the accuracy of magnetic powder dynamometers?

EconoTest ECF series achieves torque measurement accuracy of ±0.2% to ±0.5% full scale depending on model configuration. The smooth, stable braking torque characteristic of magnetic powder technology ensures consistent and repeatable measurements across production batch testing scenarios.

What cooling is required for magnetic powder dynamometers?

ECF2 to ECF10 models (2–10 Nm) are air-cooled and require no external cooling connection. ECF20 and larger models (20 Nm and above) require water cooling. Recommended water flow and pressure specifications are provided with each model. For continuous duty production testing, water cooling is strongly recommended even for lower-torque models to extend powder life.

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