DHT – Digital Hand Tester
Use the DHT for tension or compression testing applications. Standard pull lengths of 12” can be increased with optional extended rods to up to 18” to test longer parts. The Digital Hand Tester has higher resolution force and length to test with greater accuracy than our ECT (Electronic Compression Tester) and CDHT (Compression Digital Hand Tester). In addition, this tester can be upgraded with useful options like the Micro-Length Adjust with length stops or USB / RS 232 ports.
The DHT displays force and length readings on a two-line LED screen in real time as values with indicator bars. Like all of our manually-operated spring testers, the DHT has built-in deflection compensation for accurate readings at all times. Built on a rugged cast aluminum and steel frame, the Digital Hand Tester has a precision rack and pinion drive with adjustments for wear and features convenient hand operation to apply force and adjust length. Lastly, the DHT includes 2 position stop rods, a standard length lock, a rechargeable battery and mechanical overload stops to protect the tester from damage.
Includes Length 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. If you buy or use a tester without deflection compensation, measurements might include significant length errors.
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.
Larson Systems has built-in Length Deflection Compensation so that the user does not have to calculate and apply length corrections. Most competitors do not have length deflection compensation.
With a Larson Systems product, forget about calculating load cell and frame deflection when testing, we’ve got you covered.
SDC (Spring Data Collector) Software Demo
Try our software for “Spring Testing Data at Your Fingertips”. With Larson System’s SDC (Spring Data Collector)Software, your spring testing data can be accessed, stored and manipulated as it is generated. Store specifications for different parts, load a set of parameters and clearly see which springs are out of spec using the on-screen graphical representation of the testing results. Save and print results or open the results file in Microsoft Excel. You have complete control of your testing data.
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