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SDHT - Super Digital Hand Tester
SDHT - Super Digital Hand Tester

Use this tester for compression or extension applications from 2 to 750 lb. Standard pull lengths of 12” can be increased with optional extended rods to up to 24” to test long parts. It has higher resolution force and length to test with greater accuracy.

The SDHT comes standard with a two-line backlit LCD display of force and length with built-in load cell and frame deflection compensation for accurate readings at all times. It has a rugged cast aluminum and steel frame, precision rack and pinion drive with adjustments for wear and convenient hand operation to apply force and adjust length. It includes Micro Length Adjust with built-in stops, standard length lock, rechargeable battery and mechanical overload stops to protect the tester from damage.

  • Up to 24" range (12" standard)
  • Up to 19" stroke (11" standard)
  • Up to 4" Ø platform (2" standard)
  • Standard 0.0005" length resolution
  • 2 to 750 lb load capacities
  • SDHT software package

Heavy duty braces for increased accuracy are standard on the SDHT and LSI offers powerful, optional software features to make testing easy and productive:

  1. 2 Point with Rate
    Test two points with spring rate calculation in one deflection of the spring.
  2. Calculated Free Length (includes 2 Point with Rate)
    Calculate the free length of a compression spring.
  3. Initial Tension (includes 2 Point with Rate)
    Calculate the initial tension of an extension spring.
  4. Limit Lights & Full Statistical Analysis
    Part sorting using bright LED limit lights for good / bad parts and a statistical summary printout that includes a histogram and data run chart.
Part Testing Capacity
SDC (Spring Data Collector) Software Logo

Try our software for "Spring Testing Data at Your Fingertips". With Larson Systems' SDCSoftware, your spring testing data can be accessed, stored and manipulated as it is generated. Store specifications for differentparts, 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.

  • Compression and extension testing of force and length
  • Micro Length Adjust with built-in stops
  • Built-in 0.25" (8 mm) 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
  • Tracking or peak modes (2,000 samples / sec)
  • Load cell and frame deflection compensation
  • Mechanical and software overload protection
  • Built-in shunt calibration verification
  • Digital calibration and linearization
  • Backlit digital LCD display of force and length
  • Wipe-clean embossed key faceplate
  • Push-button force and length zeroing
  • NIST traceable calibration
Force Specifications
Load Cell
Capacity
Standard Resolution
0-20% FS 20-100% FS
2 lb 0.00002 lb 0.0002 lb
907 g 0.01 g 0.1 g
8.9 N 0.0001 N 0.001 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
750 lb 0.02 lb 0.2 lb
340 kg 0.01 kg 0.1 kg
3,336 N 0.1 N 1 N
Accuracy = ± Full Scale Resolution x 2
Length Specifications
Capacity Standard Resolution
≤ 200 lb 0.0005 in (± 0.001 in)
0.01 mm (± 0.02 mm)
≥ 750 lb 0.0005 in (± 0.002 in)
0.01 mm (± 0.04 mm)
Ordering Information
Part Number Description Price
Tester
050-0000-0043-00 SDHT - 2 lb Super Digital Hand Tester Quote
050-0000-0044-00 SDHT - 11 lb Super Digital Hand Tester Quote
050-0000-0087-00 SDHT - 22 lb Super Digital Hand Tester Quote
050-0000-0076-00 SDHT - 66 lb Super Digital Hand Tester Quote
050-0000-0045-00 SDHT - 110 lb Super Digital Hand Tester Quote
050-0000-0077-00 SDHT - 200 lb Super Digital Hand Tester Quote
050-0000-0046-00 SDHT - 750 lb Super Digital Hand Tester Quote
Factory Options
025-0000-0412-00 Quick Release Range Adjust Handles (200 lb Max Load) Quote
018-0000-1563-01 Extended Range Rods to 18" Quote
018-0000-1563-04 Extended Range Rods to 24" Quote
025-0000-0308-00 Extended Stroke to 19" Quote
025-0000-0308-01 Extended Stroke to 19" with 0.312" Ø Thru-Hole Quote
025-0000-0676-00 MicroAdjust Wrenchless Stop Assembly Quote
SDHT Tester Software Options
050-0000-0072-00 2 Point with Rate Quote
050-1000-0040-00 Calculated Free Length (includes 2 Point with Rate) Quote
050-1000-0041-00 Initial Tension (includes 2 Point with Rate) Quote
050-0000-0073-00 Limit Lights & Full Statistical Analysis Quote
Accessories
025-0000-0225-00 Thru-Rod Support Kit (1/16 to 1/8" Ø x 6") Quote
025-0000-0424-00 Thru-Rod Accessory Kit (1/16 to 1/4" Ø) Quote
025-0000-0485-00 4" Ø Platform / Thru-Rod Support Kit (1/16 to 11/16" Ø ID x 8") Quote
025-0000-0191-00 Platforms - 4" Ø Quote
025-0000-0190-00 Setup Blocks Quote
025-0000-0250-04 Pin Extension Hook Set - 2 / 66 / 110 lb max (Fixed Mount) Quote
025-0000-0340-05 Wire Extension Hooks - 2 lb max (0.030" Ø) Quote
025-0000-0340-06 Wire Extension Hooks - 2 lb max (0.050" Ø) Quote
025-0000-0340-03 Wire Extension Hook Set - 10 / 66 / 110 lb max Quote
025-0000-0523-00 Pin (Swivel Mount) and Wire Extension Hook Set -
2 / 10 / 66 / 110 / 1,000 lb
Quote
025-0000-0183-01 Machined Extension Hook Set - 110 / 750 lb max Quote
025-0000-0271-00 Wire Crimp Pull Fixture - Upper Quote
025-0000-0274-00 Wire Crimp Grip Fixture - Lower 110 lb Quote
025-0000-0272-00 Wire Crimp Grip Fixture - Lower 1,000 lb Quote
025-0000-0193-00 Smooth Jaw Wire Chucks - 100 lb Quote
025-0000-0193-01 Serrated Jaw Wire Chucks - 200 lb Quote
025-0000-0193-02 Smooth Jaw Wire Chucks - 400 lb Quote
025-0000-0288-00 Air Vibration Damping Table Quote
025-0000-0226-00 Vibration Damping Pad Quote
018-0000-1718-00 5/16-18 M to 10-32 M/F Thread Adapter Quote
018-0000-1718-01 5/16-18 M to M6 M/F Thread Adapter Quote
018-0000-1718-02 5/16-18 M to M4 M/F Thread Adapter Quote
059-1000-0004-00 Dust Cover (Standard 12" Range Rods) Quote
059-1000-0012-00 Dust Cover (18" Range Rods) Quote
050-0000-0099-00 TUL - Twist Under Load Quote
Printer & Connectivity Options
025-0000-0464-00 Inkjet Printer (Includes Cable / Adapter 025-0000-0458-00) Quote
025-0000-0458-00 RS 232 to Parallel Printer Cable / Adapter Quote
050-0000-0075-00 SSS - PC Statistical & Spreadsheet Interface Software Quote
Power Supplies (One power supply is included with each new order)
025-1000-0396-00 Power Supply - USA (115 VAC) Quote
025-1000-0396-04 Power Supply - International (100-240 VAC 50-60 Hz) Quote

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Larson Systems Inc.
13847 Aberdeen Street NE
Ham Lake, MN 55304
Phone: 763-780-2131
Fax: 763-780-2182
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