High torque, long life Exlar linear actuators now have a built-in
force measuring option.
Exlar is extending the capabilities of its high torque, long life Exlar GSX and I Series of electromechanical
linear actuators with the introduction of an integral force measuring option. Force
measuring is achieved by means of a load cell embedded within the actuator. This option offers a
direct method for obtaining electronic data relating to the force being applied by the actuator. The
strain gauge load sensor is mounted inside the actuator’s case in a compact and protected robust
design.
The integrated load cell option is available on Exlar’s GSX30, 40, 50 and 60 models, and the I
Series 30 and 40 model actuators. The load cell is a strain gauge type, offering stable and
accurate load sensing (+/- 1% linearity, +/- 0.5% repeatability and hysteresis) in compression and
optionally tension, and for static or dynamic loads.
The force measuring option is provided with a separate connector for interfacing the internal load
sensor to an external strain gauge conditioner/amplifier required to excite the strain gauge sensor.
In addition, Exlar offers strain gauge conditioners to provide a high level signal, either 0 - 10V or 4-
20mA output, for monitoring of the output signal, which are compatible with most standard PLC
analog input cards and signal conversion modules. Alternatively, any one of numerous PLC strain
gauge input cards or separate strain gauge conditioners/amplifiers on the market can be used.
The GSX and I Series actuators in which the force measuring option is available both employ
Exlar’s planetary roller screw technology.