MV-LC0148 Keyed-Shaft Rotary Torque Sensor, 0.1-500 N m

METRAVON MV-LC0148 is a rotary torque sensor with keyed shafts at both ends and discrete ratings from 0.1 to 500 N m. It is assessed for a rotating test rig by the torque to be measured, the speed and the mechanical connection to the drive and load. Include start-up and braking peaks when defining the torque duty, and compare both coupling interfaces with the selected shaft drawing. Define the torque duty, shaft arrangement and receiving acquisition system before choosing the rating.

Select the rotary torque sensor for working torque and transients

The listed ratings are 0.1, 0.2, 0.3, 0.5, 1, 2, 3, 5, 10, 20, 30, 50, 100, 200, 300 and 500 N m. State continuous working torque, reversals and start or stop events as applicable to the rig. The reference supports positive and negative torque signals, but the required signed calibration and controller scaling must be agreed. Its 120% FS safe-overload entry is not a routine working margin, and the 150% FS ultimate figure is not a permissible test target. Check the entire shaft train separately.

Use the coupling envelope for the chosen torque group

The 0.1-100 N m outline shows 18 mm shafts and a 108 mm longitudinal reference; its key-width reference is 6 mm. The 200-500 N m outline changes to 28 mm shafts, 143 mm longitudinal reference and an 8 mm key-width reference. Confirm shaft fits, key details, engagement and the full rated housing outline before making couplings. A matching key width alone does not approve the coupling or its torque rating. Reserve axial assembly space and access to the connector and any support arrangement.

Confirm rotation limits without inferring an rpm output

The stated maximum speed does not exceed 4000 r/min. Confirm the allowable duty for the actual rating and installation rather than assuming every rig can run continuously at that boundary. Provide the coupling, shaft-support and rotational arrangement for review, including any radial or axial loading. A rotary torque product is not automatically a tachometer, and the presence of a speed limit does not establish a separate speed channel. Do not specify a pulse, frequency or digital protocol without a delivered interface document.

Resolve the electrical build before connecting the test system

The technical output reference is 1.0-1.5 mV/V. Recommended excitation is 12 V and maximum excitation is 15 V; a generic 24 V process supply must not be assumed compatible. The impedance entries list 350/700 ohm alternatives with +/-10 ohm tolerance, so identify the supplied configuration and actual sensitivity. Request terminal functions, acquisition requirements, scaling and calibration information together. The available data do not establish a direct RS485 or current-loop input connection to a PLC.

Accept the torque chain with the final couplings installed

Verify zero, signed response and agreed reference torque using the approved test and guarding procedure. Check repeated values and the return after unloading for the directions used in service. Non-linearity and hysteresis are each +/-0.2% FS, while repeatability is +/-0.1% FS. Keep those definitions separate from a complete rig accuracy requirement. Compensation is listed at -10 to +60 deg C and operation at -20 to +60 deg C, with IP66. Output and zero temperature effects are each +/-0.02% FS per 10 deg C. Record the delivered configuration and torque reference with the final coupling arrangement.

Request MV-LC0148 with the torque duty and directions, operating speed, drive and load shaft drawings, coupling layout and the proposed acquisition system.

Coupling changes, speed channels and overload figures