DHT 1500
Digital Hand Tester - 1,500 lbf Capacity

Built to order. Standard lead time 3-4 weeks.

The DHT 1500 spring tester is a high-capacity / high-resolution version of our benchtop DHT (Digital Hand Tester) and can be used for tension and compression testing up to 1,500 lbf with great accuracy.

  • Up to 72″ range (18″ standard)
  • Up to 36″ stroke (13″ standard)
  • Up to 8″ Ø platform (3.5″ Ø standard)
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DHT 1500 – Digital Hand Tester


The DHT 1500 spring tester is a high-capacity / high-resolution version of our benchtop DHT (Digital Hand Tester) and can be used for tension and compression testing up to 1,500 lbf with great accuracy. The standard pull length of 18” can be increased up to 72” with optional extended rods to to test very long parts. This spring tester can also be upgraded with options like Micro-Length Adjust with length stops and USB/RS232 ports.

A two-line LED display shows force/length readings with indicator bars and features built-in deflection compensation for accurate measurements at all times. The tester is built from a rugged cast aluminum and steel frame, moves on a precision rack and pinion drive with adjustments for wear and features convenient hand operation to apply force and adjust length. It comes standard with 2 position stop rods, a standard length lock and mechanical overload stops to protect the tester from damage. The testing platforms include a 0.437″ thru-hole from the factory.

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.

Download Free Demo

Force Specifications

Load Cell
Capacity		 Standard Resolution High Resolution*
0-100% FS 0-20% FS 20-100% FS
110 lbf 0.05 lbf 0.005 lbf 0.05 lbf
50 kg 0.02 kg 0.002 kg 0.02 kg
489 N 0.2 N 0.02 N 0.2 N
750 lbf 0.5 lbf 0.05 lbf 0.5 lbf
340 kg 0.2 kg 0.02 kg 0.2 kg
3,336 N 2 N 0.2 N 2 N
1,500 lbf 1 lbf 0.1 lbf 1 lbf
680 kg 0.5 kg 0.05 kg 0.5 kg
6,672 N 5 N 0.5 N 5 N
Accuracy = ± Full Scale Resolution x 2
*Requires High Resolution Force option 050-0000-0107-00

Parts and Accessories

Tester

DescriptionPart Number 
DHT 1500 - Digital Hand Tester - 1500 lbf Capacity050-0000-0101-01Get a Quote

Accuracy and Factory Options

DescriptionPart Number 
High Resolution Force (10X Resolution from 0-20% FS)050-0000-0107-00Get a Quote
Peak Mode050-1000-0010-01Get a Quote
RS232 / USB output050-1000-0064-00Get a Quote
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
MicroAdjust Wrenchless Stop Assembly025-0000-0676-00Get a Quote
36" Support Rods for 24" Range025-0000-0442-00Get a Quote
48" Support Rods for 24" 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
Gear Rack Assembly - 18" Stroke (0.437" Thru-Hole)025-0000-0446-03Get a Quote
Gear Rack Assembly - 24" Stroke (0.437" Thru-Hole)025-0000-0446-04Get a Quote
Gear Rack Assembly - 18" Stroke (no Thru-Hole)025-0000-0446-01Get a Quote
Gear Rack Assembly - 24" Stroke (no Thru-Hole)025-0000-0446-02Get a Quote
Gear Rack Assembly - 36" Stroke (no Thru-Hole)025-0000-0446-05Get a Quote

Load Cells

DescriptionPart Number 
110 lbf Quick Change Smart Interchangeable Load Cell (3.5" Ø platform)025-0000-0814-04Get a Quote
750 lbf Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-09Get a Quote
1,500 lbf Quick Change Smart Interchangeable Load Cell (6" Ø platform)025-0000-0814-11Get 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
Rechargeable Battery, 6V Kit025-1000-0491-00Get 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 Setup Blocks

Setup Blocks

Part Number: 025-0000-0190-00

For compression / extension length zeroing. 12″ extension zeroing; 10″ compression zeroing.

025-0000-0190-00Get 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 B Pin Extension Hooks – 2 lb max (Fixed Mount)
025-0000-0250-02 B Pin Extension Hooks – 66 lb max (Fixed Mount)
025-0000-0250-03 B Pin Extension Hooks – 110 lb max (Fixed Mount)
025-0000-0250-04 A Pin Extension Hooks Set – 2 / 66 / 110 lb max (Fixed Mount) Comes with protective carrying and storage case.
025-0000-0250-05 A Pin Extension Hooks Set – 2 / 66 / 110 lb max (Swivel Mount) Comes with protective carrying and storage case.
025-0000-0250-04Get 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 A 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 A Wedge Grips 0-0.350″ (1 Jaw / 1 Grip Set)
025-0000-0428-01 A Wedge Grips 0.250-0.600″ (1 Jaw / 1 Grip Set)
025-0000-0428-02 A Wedge Grips 0-0.600″ (1 Jaw / 2 Grip Sets)
018-0000-1964-00 C Wedge Grips 0-0.350″ (1 Grip Set)
018-0000-1971-00 C 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
Get a Quote

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