SDHT 2000
Super Digital Hand Tester - 2,000 lbf Capacity

This is the heavy-duty version of our SDHT. Our most accurate manual tester, the SDHT 2000 has Quick Change load cells that allow you to measure grams to two decimal places, change the load cell and test up to 2,000 pounds.

  • Up to 72″ range (18″ standard)
  • Up to 36″ stroke (13″ standard)
  • Up to 8″ Ø platform (2″ standard)
See all features
Customize & Buy

SDHT 2000 – Super Digital Hand Tester

This is the heavy-duty version of our SDHT. Our most accurate manual tester, the SDHT 2000 has Quick Change load cells that allow you to measure grams to two decimal places, change the load cell and test up to 2,000 pounds. Its rugged two post design minimizes frame deflection and gives you the most versatility and productivity in a single tester. The tester has a two-line backlit LED display of force and length and has deflection compensation for accurate readings at all times.

The SDHT 2000 is made from a combination of billet aluminum and precision ground steel parts. The rack and pinion lever drive can be upgraded to our Micro Length Adjust assembly for fine length adjustments. The SDHT 2000 is also equipped with two positive stops to be used for repetitive testing and comes standard with a 0.437” Ø thru-hole for centering shafts for supporting buckling type compression springs. A stroke lock helps keep things in place while you take measurements or configure tooling. The tester has 5/8-18 tooling holes for convenient fitting.

SDHT software includes these powerful features, making testing easy and productive:

  1. Limit Lights
    Part sorting and a statistical summary printout that includes a histogram and data run chart.
  2. Two-Point with Rate
    Test two points with spring rate calculation in one deflection of the spring.
  3. Calculated Free Length Measurement
    Calculate the free length of a compression spring.
  4. Initial Tension Measurement
    Calculate the initial tension of an extension spring.

Specifications

  • Compression and extension testing of force and length
  • Built-in 0.437″ thru-hole
  • Internal 8 hour battery for portable use
  • RS 232 data communications port
  • User programmable filter
  • Length / force offset
  • Customizable print headings
  • Statistical summary printout
  • Built-in 1,800 test point data logger
  • Complete computerized tester diagnostics
  • 20-bit internal force resolution
  • Load cell and frame deflection compensation
  • Mechanical and software overload protection
  • Built-in shunt calibration verification
  • Digital calibration and linearization
  • Backlit digital LED display of force and length
  • Wipe-clean embossed key faceplate
  • Push-button force and length zeroing
  • NIST traceable calibration
  • Tracking or peak modes (2,000 samples / sec)

 

Includes Length Deflection Compensation

What is length deflection compensation?
All force/lengh 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/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 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.

Free Demo

Force Specifications

Load Cell
Capacity		 Standard Resolution
0-20% FS 20-100% FS
2 lb 0.00001 lb 0.0001 lb
907 g 0.02 g 0.2 g
8.9 N 0.0002 N 0.002 N
11 lb 0.0002 lb 0.002 lb
5 kg 0.1 g 1 g
49 N 0.001 N 0.01 N
22 lb 0.0005 lb 0.005 lb
10 kg 0.2 g 2 g
98 N 0.002 N 0.02 N
66 lb 0.001 lb 0.01 lb
30 kg 0.5 g 5 g
294 N 0.005 N 0.05 N
110 lb 0.002 lb 0.02 lb
50 kg 0.001 kg 0.01 kg
489 N 0.01 N 0.1 N
200 lb 0.005 lb 0.05 lb
91 kg 0.002 kg 0.02 kg
890 N 0.02 N 0.2 N
550 lb 0.01 lb 0.1 lb
249 kg 0.005 kg 0.05 kg
2,447 N 0.05 N 0.5 N
750 lb 0.02 lb 0.2 lb
340 kg 0.01 kg 0.1 kg
3,336 N 0.1 N 1 N
1,000 lb 0.02 lb .2 lb
454 kg 0.01 kg 0.1 kg
4,448 N 0.1 N 1 N
1,500 lb 0.1 lb 1 lb
680 kg 0.05 kg 0.5 kg
6,672 N 0.5 N 5 N
2,000 lb 0.1 lb 1 lb
907 kg 0.05 kg 0.5 kg
8,896 N 0.5 N 5 N
Accuracy = ± Full Scale Resolution x 2

Parts and Accessories

Tester

DescriptionPart Number 
SDHT 2000 - Super Digital Hand Tester (750 lb capacity, lever operated)050-0000-0101-00Get a Quote

Factory Options

DescriptionPart Number 
Micro Length Adjust Assembly (2,000 lb capacity)

Micro Length Adjust Assembly – 2,000 lb Cap.

025-0000-0434-00

Make extremely accurate length adjustments using two speeds.

025-0000-0434-00Get a Quote
36" Support Rods for 24" Range025-0000-0442-00Get a Quote
48" Support Rods for 36" Range025-0000-0437-00Get a Quote
60" Support Rods for 48" Range025-0000-0438-00Get a Quote
72" Support Rods for 60" Range025-0000-0442-01Get a Quote
84" Support Rods for 72" Range025-0000-0442-02Get a Quote
Extended Stroke to 18"025-0000-0446-01Get a Quote
Extended Stroke to 18" with 0.437" Thru-Hole025-0000-0446-03Get a Quote
Extended Stroke to 24"025-0000-0446-02Get a Quote
Extended Stroke to 24" with 0.437" Thru-Hole025-0000-0446-04Get a Quote
Extended Stroke to 36"025-0000-0446-05Get a Quote

Load Cells

DescriptionPart Number 
2 lb Quick Change Smart Interchangeable Load Cell (1.0" Ø platform)025-0000-0814-00Get a Quote
11 lb Quick Change Smart Interchangeable Load Cell (3.5" Ø platform)025-0000-0814-01Get a Quote
22 lb Quick Change Smart Interchangeable Load Cell (3.5" Ø platform)025-0000-0814-02Get a Quote
66 lb Quick Change Smart Interchangeable Load Cell (3.5" Ø platform)025-0000-0814-03Get a Quote
110 lb Quick Change Smart Interchangeable Load Cell (3.5" Ø platform)025-0000-0814-04Get a Quote
200 lb Quick Change Smart Interchangeable Load Cell (3.5" Ø platform)025-0000-0814-05Get a Quote
550 lb Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-08Get a Quote
750 lb Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-09Get a Quote
1,000 lb Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-10Get a Quote
1,500 lb Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-11Get a Quote
2,000 lb Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-12Get a Quote

Accessories

DescriptionPart Number 
Platforms - 8" Ø (5/8 Mounting hole)

Platforms – 8″ Ø (5/8 Mounting hole)

Part Number: 025-0000-0439-00

For testing larger diameter compression parts.

025-0000-0439-00Get a Quote
Set of 2" Spring Platforms (HT Tool Steel, No Hole)025-0000-1597-00Get a Quote
Thru-Rod Support Kit (1/16 to 1/8" Ø x 6")

Thru-Rod Support Kit (1/16 to 1/8″ Ø x 6″)

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.

025-0000-0225-00Get a Quote
Thru-Rod Accessory Kit (1/16 to 3/8" Ø x 8")

Thru-Rod Accessory Kit (1/16 to 3/8″ Ø x 8″)

Part Number: 025-0000-0424-01

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.

025-0000-0424-01Get a Quote
Extension Spring Swivel Wire Hook - 2 lb cap (0.030" Ø wire)

Wire Extension Hooks – 2 lb max (0.030″ Ø)

Part Number: 025-0000-0340-05

Medium duty hooks for your extension testing.

025-0000-0340-05Get a Quote
Extension Spring Swivel Wire Hook - 2 lb cap (0.050" Ø wire)

Wire Extension Hooks – 2 lb max (0.050″ Ø)

Part Number: 025-0000-0340-06

Medium duty hooks for your extension testing.

025-0000-0340-06Get a Quote
Pin Extension Hooks

Pin Extension Hooks

Light duty hooks for your extension testing. The above pictures show 025-0000-0250-05 (including the swivel mount).

Part Number Description
025-0000-0250-01 Pin Extension Hooks – 2 lb max (Fixed Mount)
025-0000-0250-02 Pin Extension Hooks – 66 lb max (Fixed Mount)
025-0000-0250-03 Pin Extension Hooks – 110 lb max (Fixed Mount)
025-0000-0250-04 Pin Extension Hooks Set – 2 / 66 / 110 lb max (Fixed Mount) Comes with protective carrying and storage case.
025-0000-0250-05 Pin Extension Hooks Set – 2 / 66 / 110 lb max (Swivel Mount) Comes with protective carrying and storage case.
025-0000-0250-04Get a Quote
Extension Spring Swivel Hook Set - 10 / 66 / 110 lb

Wire Extension Hook Set – 10 / 66 / 110 lb max.

Part Number: 025-0000-0340-03

Wire Extension Hook Set – 10 / 66 / 110 lb max. Includes protective carrying and storage case.

025-0000-0340-03Get a Quote
Wire Extension Hooks

Wire Extension Hooks

Part Number: 025-0000-0523-00

Medium duty hooks for extension testing. Protective carrying and storage case included with sets.

Part Number Description
025-0000-0340-01 Wire Extension Hooks – 10 lb max (1/16″ Ø wire)
025-0000-0340-02 Wire Extension Hooks – 66 lb max (3/32″ Ø wire)
025-0000-0340-00 Wire Extension Hooks – 110 lb max (1/8″ Ø wire)
025-0000-0340-03 Wire Extension Hook Set – 10 / 66 / 110 lb max. Includes protective carrying and storage case.
025-0000-0514-00 Wire Extension Hooks – 1,000 lb max (5/16″ Ø wire)
025-0000-0523-00 Extension Hook Set – Pin & Swivel – 10 / 66 / 110 / 1,000 lb
025-0000-0523-00Get a Quote
Machined Extension Hooks

Machined Extension Hooks

Part Number: 025-0000-0181-00

Heavy duty hooks for your extension testing.

Part Number Description
025-0000-0183-00 Machined Extension Hooks – 110 lb max
025-0000-0181-00 Machined Extension Hooks – 750 lb max
025-0000-0269-00 Machined Extension Hooks – 2,000 lb max
025-0000-0183-01 Machined Extension Hook Set – 110 / 750 lb max. Includes protective carrying and storage case.
025-0000-0181-00Get a Quote
LSI Wedge Grips

LSI Wedge Grips

Ideal for testing wires, strip material and plastic tape or films. Spring loaded jaws automatically close and tighten as tension is applied.

 

Part Number Description
025-0000-0428-00 Wedge Grips 0-0.350″ (1 Jaw / 1 Grip Set)
025-0000-0428-01 Wedge Grips 0.250-0.600″ (1 Jaw / 1 Grip Set)
025-0000-0428-02 Wedge Grips 0-0.600″ (1 Jaw / 2 Grip Sets)
018-0000-1964-00 Wedge Grips 0-0.350″ (1 Grip Set)
018-0000-1971-00 Wedge Grips 0.250-0.600″ (1 Grip Set)
025-0000-0428-00Get a Quote
Smooth Jaw Wire Chucks - 100 lb

Wire Chucks

Part Number: 025-0000-0193-00

For extension wire breakage testing: accepts 0.020″ to 0.312″ Ø wire.

025-0000-0193-00Get a Quote
Serrated Jaw Wire Chucks - 200 lb

Wire Chucks

Part Number: 025-0000-0193-01

For extension wire breakage testing: accepts 0.020″ to 0.312″ Ø wire.

025-0000-0193-01Get a Quote
Smooth Jaw Wire Chucks - 400 lb

Wire Chucks

Part Number: 025-0000-0193-02

For extension wire breakage testing: accepts 0.020″ to 0.312″ Ø wire.

025-0000-0193-02Get a Quote
5/16-18 M to 10-32 M/F Thread Adapter

Thread Adapters

Part Number: 018-0000-1718-00

Use differently threaded attachments with your Larson tester.

018-0000-1718-00Get a Quote
5/16-18 M to M6 M/F Thread Adapter

Thread Adapters

Part Number: 018-0000-1718-01

Use differently threaded attachments with your Larson tester.

018-0000-1718-01Get a Quote
5/16-18 M to M4 M/F Thread Adapter

Thread Adapters

Part Number: 018-0000-1718-02

Use differently threaded attachments with your Larson tester.

018-0000-1718-02Get a Quote
Dust Cover - 18" Range Rods

Dust Cover

Part Number: 059-1000-0016-00

059-1000-0016-00Get a Quote
Dust Cover - 24" Range Rods

Dust Cover

Part Number: 059-1000-0017-00

059-1000-0017-00Get a Quote
Dust Cover - 36" Range Rods

Dust Cover

Part Number: 059-1000-0018-00

059-1000-0018-00Get a Quote
Dust Cover - 48" Range Rods

Dust Cover

Part Number: 059-1000-0019-00

059-1000-0019-00Get a Quote
TUL - Twist Under Load

Twist Under Load

Part Number: 050-0000-0099-00

Graduated Markers
The Twist Under Load has indicating marks that will measure the amount of twist in any given spring.

Capacity
From 10 to 2,000 lbs and up to 4″ Ø.

Captivated Ball Bearings
With lubricated ball bearings, this unit will rotate smoothly and with very light force.

Universal Mounting (excluding the Flash 11 & Flash 24)
Will mount to any Larson tester, or any tester with 5/16-18 mounting holes.

050-0000-0099-00Get a Quote

Tester Software

DescriptionPart Number 
2 Point with Rate

2 Point with Rate

Part Number: 050-0000-0072-00

2 Point With Rate is a tester software option that allows you to calculate the rate (or spring constant) between two points. To use this feature, press the Test Mode button to enter 2 Point With Rate mode. Set your first test point by using the tester’s force and length readings as a guide and pressing the F1 button. Set the second test point using the same method. When both test points are set the tester automatically calculates and displays the rate as shown. This is all accomplished in just one deflection of the spring! 2 Point with Rate is a tester software feature. A PC is not needed for this software.
Click for print samples!

050-0000-0072-00Get a Quote
Calculated Free Length (includes 2 Point with Rate)

Calculated Free Length

Part Number: 050-1000-0040-00

Calculated Free Length is a tester software option that allows you to calculate the free length of a compression spring. To use this feature, press the Test Mode button to enter 2 Point with Free Length mode. Set your first test point by using the tester’s force and length readings as a guide and pressing the F1 button. Set the second test point using the same method. When both test points are set the tester automatically calculates and displays the rate and the free length as shown. Calculated Free Length is a tester software feature. A PC is not needed for this software.

050-1000-0040-00Get a Quote
Initial Tension (includes 2 Point with Rate)

Initial Tension

Part Number: 050-1000-0041-00

Initial Tension is a tester software option that allows you to calculate the force required to start separating the coils of an extension spring. To use this feature, press the Test Mode button to enter 2 Point with Initial Tension mode. Find the unloaded length of the spring by using the tester’s force and length readings as a guide and pressing the F1 button. Then set the first and second test point using the same method. When both test points have been set, the tester automatically calculates and displays the rate and initial tension as shown. Initial Tension is a tester software feature. A PC is not needed for this software.

050-1000-0041-00Get a Quote
Limit Lights & Full Statistical Analysis

Limit Lights & Full Statistical Analysis

Part Number: 050-1000-0073-00

This software option lets the user program the limit lights to make sorting reliable and efficient. This option also uses the programmed limits to enable the Mean, Standard Deviation, Range, Range Chart, Histogram, Cp and Cpk statistical printed outputs. Limit Lights and Full Statistics Analysis is a tester software feature. A PC is not needed for this software.
Click for print samples!

050-0000-0073-00Get a Quote

PC Software

DescriptionPart Number 
SSS - Statistical & Spreadsheet Interface Software

Total Spring Inspection
The SSS software can connect to any LSI manual tester, including the DHT and the TST, and virtually any measuring device that can send data via RS232. The SSS can also accept data from the keyboard. By setting up a specific testing method, you can test your springs reliably and repeatedly and generate one comprehensive report.

Click here to view

050-0000-0075-00Get a Quote
Spring Data Collector Software

Force@Length Data at Your Fingertips!
With the 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

050-1000-0060-01Get a Quote

Power Supplies

DescriptionPart Number 
Power Supply, 100-240 VAC 50-60 Hz (USA Plug)025-1000-0396-00Get a Quote
Power Supply, 100-240 VAC 50-60 Hz (International Plugs)025-1000-0396-04Get a Quote