| |
Hysteresis Dynamometers (HD Series) |
  
   |
| |
| Dynamometer Features |
|
- 16 Standard Models with Maximum Torque from 2.5
oz·in to 500 lb·in (18 mN·m to 56.5 N·m)
- Hysteresis
Braking System: Provides precise torque loading
independent of shaft speed
- Motor Testing from No Load to Locked Rotor
- Accuracy: ±0.25% to ± 0.5% (Full Scale)
- Air Flow Sensor: For protection against overheating
and operator error
- Standard Torque Units: English, Metric and SI
- Base Plate: Available in long or short versions
- Custom Dynamometers: for special torque and speed
requirements
- Easy Calibration
|
|
|
The Hysteresis Braking
System
All
Magtrol Hysteresis Dynamometers absorb power with a unique Hysteresis
Braking System which provides frictionless torque loading independent
of shaft speed. The Hysteresis Brake provides torque by the
use of two basic components - a reticulated pole structure and
a specialty steel rotor/shaft assembly - fitted together but
not in physical contact. Until the pole structure is energized,
the drag cup can spin freely on its shaft bearings. When a magnetizing
force from the field coil is applied to the pole structure,
the air gap becomes a flux field and the rotor is magnetically
restrained, providing a braking action between the pole structure
and rotor. |
 |
|
Other Types of Hysteresis
Dynamometers
Micro Dyne
Magtrol's new Micro Dyne is the FIRST and ONLY system designed specifically for testing miniature/micro, low-torque motors.
Engine Dynamometer
Used for testing internal combustion engines up to 10 horsepower
(7.5 kW).
Dial
Weight Dynamometer
Simple to use, reliable, and lower cost dynamometers for manual
motor testing. |
|
Special Dynamometer
Designs and Modifications
|
Low
Speed
Testing |
For low speed motors, such
as gear motors with maximum speeds of less than 200 rpm,
Magtrol offers additional encoder options that allow for
increased resolution of the speed signal. Please refer
to the data sheet for ordering information. |
High
Speed
Testing |
For certain models, Magtrol
can provide a dynamometer which can operate at higher
than rated speeds. |
Mechanical
Modifications |
Magtrol can provide customized
base plates, riser blocks and shaft modifications. |
Analog
Output |
Magtrol can provide a 0-5
VDC analog output for the torque signal and a TTL speed
signal from the dynamometer. |
|
|
| HD Tandem Dynamometer |
| Magtrol offers Hysteresis Dynamometers mounted
in tandem. In tandem, motors of different size can be tested simultaneously using only one bench. This system also allows different brake - torque transducer configurations according to motor size. |
 |
HB 715 + TM 307 mounted in tandem with HB 815 + TM 310 |
| |
|
| Dynamometer Options |
| Torque Units |
- 5 Volt Output
- English (U.S.)
- Metric
- SI
|
| Power Operation |
- 120 VAC (standard)
- 240 VAC (option)
|
| Base Plate |
- Long (standard)
- Short
- Long with T-Slots (available on HD-800 series only)
|
| Speed Encoder |
- 60 bit (standard)
- 60 and 600 bit
- 60 and 6000 bit
|
| *contact sales reqarding speed encoders for HD-100 through HD-500 series dynamometers |
| **Contact Sales for special designs, modifications, and options. |
| |
| Ordering Information |
 |
| |
Back to top |
| |
