Built to order.
- 110, 200, 750 and 1500 lbf load capacities
- Standard 5″ range and 5″ stroke
- Up to 0.001″ length resolution
This demo of our Valve Spring Tester shows some of the great capabilities of our robust hand-operated spring tester line.
ECT Spring Tester
Electronic Compression Tester
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.
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 Software Demo
Try our software for “Spring Testing Data at Your Fingertips”. With Larson System’s SDC 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.
Force Specifications
| Load Cell Capacity |
Standard Resolution | High Resolution* | |
| 0-100% FS | 0-20% FS | 20-100% FS | |
| 110 lb | 0.1 lb | 0.01 lb | 0.1 lb |
| 50 kg | 0.05 kg | 0.005 kg | 0.05 kg |
| 489 N | 0.5 N | 0.05 N | 0.5 N |
| 200 lb | 0.1 lb | 0.01 lb | 0.1 lb |
| 91 kg | 0.05 kg | 0.005 kg | 0.05 kg |
| 890 N | 0.5 N | 0.05 N | 0.5 N |
| 750 lb | 1 lb | 0.1 lb | 1 lb |
| 340 kg | 0.5 kg | 0.05 kg | 0.5 kg |
| 3,336 N | 5 N | 0.5 N | 5 N |
| 1500 lb | 2 lb | 1 lb | 2 lb |
| 680 kg | 1.0 kg | 0.5 kg | 1.0 kg |
| 6,672 N | 10 N | 5 N | 10 N |
| Accuracy = ± Full Scale Resolution x 2 *Requires High Resolution Force option 050-1000-0012-00 |
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Parts and Accessories
Tester
| Description | Part Number | |
|---|---|---|
| ECT - 110 lb Electronic Compression Tester | 050-0000-0108-00 | Get a Quote |
| ECT - 200 lb Electronic Compression Tester | 050-0000-0151-00 | Get a Quote |
| ECT - 750 lb Electronic Compression Tester | 050-0000-0109-00 | Get a Quote |
| ECT - 1500 lb Electronic Compression Tester | 050-0000-0152-00 | Get a Quote |
Factory and Accuracy Options
| Description | Part Number | |
|---|---|---|
| High Resolution Force | 050-1000-0012-00 | Get a Quote |
| High Resolution Length | 050-1000-0013-00 | Get a Quote |
| RS232 / USB output, DHT family | 050-1000-0064-00 | Get a Quote |
Accessories
| Description | Part Number | |
|---|---|---|
Thru-Rod Support Kit (1/16 to 1/8" Ø x 4")
Thru-Rod Support Kit (1/16 to 1/8″ Ø x 4″)Part Number: 025-0000-0225-00 Includes rods: 1/16, 3/32 & 1/8″ Ø x 4″ long, accompanying plates with matching holes, as well as upper and lower plates without holes. | 025-0000-0225-00 | Get a Quote |
4" Ø Platform / Thru-Rod Support Kit (1/16 to 11/16" Ø ID x 8")
4″ Ø Platform / Thru-Rod Support Kit (1/16 to 11/16″ Ø ID x 8″)Part Number: 025-0000-0485-00 This kit is more flexible than other thru-rod options and can accommodate larger thru-rods. In addition, springs up to 4″ in diameter can be tested with the over-size platforms. Includes rods: 1/16″ to 11/16″ x 8″ long, and accompanying plates with matching holes. 4″ Ø plate can double for testing springs with larger diameter. NOTE: Deflection compensation is calibrated at the center of the platforms. The length error would vary depending on the load and the location of the load. A centered load is always best and will read accurately, to within ± 0.001″ (0.025 mm) of the actual length. A large off-center load near the edge of the extended platform may be off by up to 0.008″ (0.2 mm). Installation & Use 
| 025-0000-0485-00 | Get a Quote |
Platforms - 4" Ø (Pair for 5/16-18 Mount)
Platforms – 4″ ØPart Number: 025-0000-0191-00 For testing larger diameter compression parts. | 025-0000-0191-00 | Get a Quote |
| Set of 2" Spring Platforms (HT Tool Steel, No Hole) | 025-0000-1597-00 | Get a Quote |
Single Stop Rod
Single Stop RodPart Number: 025-0000-0293-00 One compression test stop only. | 025-0000-0293-00 | Get a Quote |
Double Stop Rod
Double Stop RodsPart Number: 025-0000-0333-00 A Two compression test stops, or one compression test stop and one extension test stop. | 025-0000-0333-00 | Get a Quote |
NiCad Rechargeable Battery
NiCad Rechargeable BatteryPart Number: 025-1000-0654-00 Add an internal rechargeable battery for easy portability. A fully charged battery lasts approximately 8 hours. | 025-0000-0294-00 | Get a Quote |
Dust Cover - 5" Range Rods
Dust CoverPart Number: 059-1000-0026-00 | 059-1000-0026-00 | Get a Quote |
| Travelling Case | 025-0000-0487-03 | Get a Quote |
| 8 Piece Valve Spring Retainer Set | 025-0000-0783-00 | Get a Quote |
| Rubber Mounting Foot Upgrade | 025-0000-1310-00 | View Product |
| Solid Height (Coil Bind) Protector - 2" | 018-0000-4358-00 | View Product |
Software Options
| Description | Part Number | |
|---|---|---|
| SSS - Statistical & Spreadsheet Interface Software Total Spring Inspection | 050-0000-0075-00 | Get a Quote |
| Excel Templates for Valve Spring Set Building and Certification | 050-0000-0140-00 | Get a Quote |
| Spring Data Collector Software (for use with DHT family testers) Force@Length Data at Your Fingertips! With Larson Systems’ SDC Software, your spring testing results can be accessed, stored and manipulated as they are generated, giving you complete control of your spring testing data. Click here to view | 050-1000-0060-01 | Get a Quote |
Power Supplies
| Description | Part Number | |
|---|---|---|
| Power Supply, 100-240 VAC 50-60 Hz (USA Plug) | 025-1000-0396-00 | Get a Quote |
| Power Supply, 100-240 VAC 50-60 Hz (International Plugs) | 025-1000-0396-04 | Get a Quote |
Calibration Certificate
| Description | Part Number | |
|---|---|---|
| NIST Traceable Calibration Certificate | 100-1000-0003-05 | Get a Quote |
