Torque tester | Torque Transducer
A torque tester is utilized as a quality check device to test or calibrate torque controlled tools. This includes electric screwdrivers, air screwdrivers, pulse tools, electronic torque wrenches, click torque wrenches, dial torque wrenches, cordless screwdrivers, nutrunners, and torque screwdrivers. Present sophisticated torque testers include the ability to measure in clockwise and counter-clockwise directions, convert to engineering units (In Oz, In Lb, Ft Lb or Foot-pound force, Nm or Newton meter, cNm, Kg Cm, g Cm, Kg fm), 3 modalities of operation (Peak, 1st Peak, Track), and include a NIST certificate.
Torque Transducer
A transducer is a device, generally electrical, electronic, electro-mechanical, electromagnetic, photonic, or photovoltaic that converts one type of energy or physical property to another for different purposes including measurement or information transfer (for illustration, pressure sensors).
The term transducer is typically utilized in two senses; the sensor, utilized to detect a parameter in one form and report it in another (typically an electrical or digital signal), and an actuator. An actuator perhaps can be described as diametrical to a sensor, in that it converts electrical signal into usually nonelectrical energy. An illustration of a transducer is a loudspeaker system which converts an electrical signal into a variable magnetic field and, subsequently, into acoustic waves.
A torque transducer, best-known as a load cell, is an electronic device utilized to convert force into an electrical signal. This conversion is indirect and takes place in two phases. Through a mechanical system, the force being sensed deforms a strain gauge. The strain gauge converts the deformation (strain) to electrical signals. A load cell typically consists of four strain gauges in a Wheatstone bridge conformation. Load cells of one or two strain gauges are as well available. The electrical signal output is usually in the order of a few millivolts and needs amplification by an instrumentation amplifier prior to it can be utilized. The output of the transducer is plugged into an algorithmic program to compute the force applied to the transducer. There are different styles available for torque transducers. Rotary, stationary, and inline are utilised for diverse calibration and audit roles.
Dual Range-Pedestal Rotary Torque Transducer
Torque Coupling Rotary Torque Transducer
Alphanumeric display
A key element of modern-day torque testers is the alphanumeric display. A alphanumeric display is utilized to measure the output signal from the transducer and computes that reading into a torque value that is showed on screen. In almost all cases the display and transducer are incorporated together inside a housing. This constitute a “Desktop Torque Tester”. External rotary and stationary transducers can be utilized with portable displays (handheld torque analyzers).
Rundown Fixture (Joint Simulator)
A rundown fixture, best-known as a joint simulator, is utilized during the calibration process to assist test power tools (cordless screwdrivers, nutrunners,electric screwdrivers, air screwdrivers, pulse tools). A joint simulator is placed on top of the transducers. An adapter bit is introduced into the power tool and is mated to top of the joint simulator. By using springs of diverse stiffness or stacking Belleville washers in set models, the joint simulator can replicate soft, medium, or hard joints. This is crucial when attempting to replicate how a tool may be utilized on an actual process.