Compression testing machine ECT

manualfor springselectronic

Electronic Compression Tester 110, 200, 750 and 1500 lbf load capacities Standard 5″ range and 5″ stroke Up to 0.001″ length resolution ECT – Electronic Compression Tester The ECT is a high quality spring tester for measuring compression force and length. A great first time purchase, this tester has a rugged cast-aluminum and steel frame that includes a precision rack and pinion drive with adjustments for wear and features convenient hand operation to apply force and adjust length. Additionally, a standard length lock and mechanical overload stops help protect the tester from damage. Force and length readings appear along with indicator bars on a two-line backlit LED display. All Larson Systems spring testers have BUILT-IN DEFLECTION COMPENSATION for accurate readings at all times. Testers without deflection compensation will always have length readings that contain error and this will also limit the benefit of high force resolution. Built-In Deflection Compensation What is length deflection compensation? All force/length testing devices, regardless of manufacturer, have additional deflection by the load cell and tester frame which occurs as the spring is loaded. Without deflection compensation, measurements will include significant length errors and this will limit the benefit of high force resolution. Spring deflection, also known as spring travel or motion, is the action of a compression spring compressing (being pushed), an extension spring extending (being pulled), or a torsion spring winding (being twisted) when a load is applied or released. This is one characteristic (spring deflection) that is measured by a Larson Systems Spring Tester.