Among the inventory of test and measurement instrumentation available through Hoskin Scientific Ltd. are rotary torque sensors. These non-contact devices are designed to be compatible with most applications in which accurate measurement of rotary torque and power are mandatory. For example, the M425 model by Datum Electronics is a huge technological step for businesses that want to measure torque and power with high accuracy and repeatability, with resolution of up to 24 bits.

The M425 fits in line with the drive train or test bed, using standard keyway shafts. This unit gives the user control over tests with digital torque rates that are selectable from one to 4,000 samples per second (sps) as standard, plus analog rates of 20 sps. The M425 rotary torque sensor is the complete torque transducer for measuring torque and power on any rotating shaft, with speed measurement based on up to 30 pulses per revolution.

With 14 standard torque ranges, high signal resolution, and a wide frequency range, the M425 is recommended for torque measurement from ten to 60,000 newton metres. It has a torque measurement design with an optimum length to maximize accuracy and give a high degree of tolerance to mounting offset, making it compatible with electric motors, pumps, gearboxes, and most other general test rig applications.

Other technical specifications of this product from Hoskin:

• Accuracy: 0.1 per cent
• Non-linearity: 0.1 per cent
• Repeatability: 0.05 per cent
• Serial torque outputs: SCADA outputs, such as RS485, RS232, Ethernet, Modbus UPD, and USB logging.
• Analog torque outputs: 4-20mA configured 4-20mA (4-12-20mA); plus or minus ten Vdc, plus or minus five Vdc, 0-10 Vdc, or 0-5 Vdc at 20 samples per second.
• Operating range: minus ten to 70 degrees Celsius.
• Environmental protection: IP54; Datum offers a high-speed RS425 torque sensor with IP67/68 protection.
• Power supply: 10-24 Vdc 250mA.

Watch this video for a look at the M425 in action:

To find out more about rotary torque sensors, get in touch with the Hoskin team.

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