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DHT - Digital Hand Tester
DHT - Digital Hand Tester

Use this tester for tension or compression applications. Standard pull lengths of 12” can be increased with optional extended rods to up to 18” to test long parts. It has higher resolution force and length to test with greater accuracy. In addition, this tester is upgradeable with more options like the Micro-Length Adjust with length stops or RS 232 port.

The DHT comes standard with a two-line backlit LCD display of force and length with 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 2 position stop rods, standard length lock, rechargeable battery and mechanical overload stops to protect the tester from damage.

Part Testing Capacity
  • Up to 18" range (12" standard)
  • Standard 6" stroke
  • Up to 4" Ø platform (2" standard)
  • Up to 0.0005" length resolution (0.001" standard)
  • 2 to 750 lb load capacities
  • DHT software package
  • Compression and extension testing of force and length
  • Double stop rods standard
  • 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 LED display of force and length
  • Wipe-clean embossed key faceplate
  • Push-button force and length zeroing
  • NIST traceable calibration
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.

Force Specifications
Load Cell
Capacity
Standard Resolution High Resolution*
0-100% FS 0-20% FS 20-100% FS
2 lb 0.001 lb 0.0001 lb 0.001 lb
907 g 0.2 g 0.02 g 0.2 g
8.9 N 0.002 N 0.0002 N 0.002 N
11 lb 0.005 lb 0.0005 lb 0.005 lb
5 kg 0.002 kg 0.0002 kg 0.002 kg
49 N 0.02 N 0.002 N 0.02 N
110 lb 0.05 lb 0.005 lb 0.05 lb
50 kg 0.02 kg 0.002 kg 0.02 kg
489 N 0.2 N 0.02 N 0.2 N
750 lb 0.5 lb 0.05 lb 0.5 lb
340 kg 0.2 kg 0.02 kg 0.2 kg
3,336 N 2 N 0.2 N 2 N
Accuracy = ± Full Scale Resolution x 2
*Requires High Resolution Force option 050-0000-0107-00
Length Specifications
Capacity Standard Resolution High Resolution*
≤ 110 lb 0.001 in (± 0.002 in) 0.0005 in (± 0.001 in)
0.02 mm (± 0.04 mm) 0.01 mm (± 0.02 mm)
≥ 750 lb 0.001 in (± 0.005 in) 0.0005 in (± 0.002 in)
0.02 mm (± 0.1 mm) 0.01 mm (± 0.04 mm)
*Requires High Resolution Length option 025-0000-0488-00
Ordering Information
Part Number Description Price
Tester
050-0000-0025-00 DHT - 2 lb Digital Hand Tester Quote
050-0000-0019-00 DHT - 11 lb Digital Hand Tester Quote
050-0000-0020-00 DHT - 110 lb Digital Hand Tester Quote
050-0000-0021-00 DHT - 750 lb Digital Hand Tester Quote
050-0000-0021-02 DHT Plus 110 lb Digital Hand Tester Quote
050-0000-0021-01 DHT Plus 750 lb Digital Hand Tester Quote
  Plus Models include: High Resolution Length and Force Updgrade, Micro Adjust with built-in stops, RS232 output and 11" Stroke.  
Accuracy Options
050-0000-0107-00 High Resolution Force (10X Resolution from 0-20% FS), DHT Quote
025-0000-0488-00 Digital Length Precision Upgrade (0.0005 Res, ± 0.001 Acc) Quote
Factory Options
025-0000-0407-02 Micro Length Adjust with Built-in Stops Quote
025-0000-0676-00 MicroAdjust Wrenchless Stop Assembly Quote
025-0000-0412-00 Quick Release Range Adjust Handles (200 lb Max Load) Quote
050-1000-0064-00 RS232 / USB output, DHT family Quote
018-0000-0907-03 23.200" Support Rods (18" Range) Quote
018-0000-1563-01 23.600" Support Rods (18" Range) Quote
Accessories
018-0000-0914-01 Platform - 1" Ø (Hardened steel) each Quote
025-0000-0191-00 Platforms - 4" Ø (Pair for 5/16-18 Mount) Quote
025-0000-0225-00 Thru-Rod Support Kit (1/16 to 1/8" Ø x 6") Quote
025-0000-0485-00 4" Ø Platform / Thru-Rod Support Kit (1/16 to 11/16" Ø ID x 8") Quote
025-0000-0190-00 Extension Setup Blocks Quote
025-0000-0340-05 Extension Spring Swivel Wire Hook - 2 lb cap (0.030" Ø wire) Quote
025-0000-0340-06 Extension Spring Swivel Wire Hook - 2 lb cap (0.050" Ø wire) Quote
025-0000-0250-01 Pin Extension Hooks - 2 lb max (Fixed Mount) Quote
025-0000-0250-02 Pin Extension Hooks - 66 lb max (Fixed Mount) Quote
025-0000-0250-03 Pin Extension Hooks - 110 lb max (Fixed Mount) Quote
025-0000-0340-01 Wire Extension Spring Hooks - 11 lb cap (1/16" Ø wire) Quote
025-0000-0340-02 Wire Extension Spring Hooks - 66 lb cap (3/32" Ø wire) Quote
025-0000-0340-00 Wire Extension Spring Hooks - 110 lb cap (1/8" Ø wire) Quote
025-0000-0514-00 Wire Extension Spring Hooks - 1,000 lb cap (5/16" Ø wire) Quote
025-0000-0183-00 Machined Extension Spring Hooks - 110 lb cap Quote
025-0000-0181-00 Machined Extension Spring Hooks - 750 lb cap Quote
025-0000-0271-00 Wire Crimp Pull Fixture - Upper, 1/32 to 7/16 slot width 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 - 12" Range Rods (DHT, SDHT) Quote
059-1000-0012-00 Dust Cover - 18" Range Rods (FDHT, DHT, SDHT) Quote
050-0000-0099-00 TUL - Twist Under Load Quote
RS 232 Options
025-0000-0464-02 Inkjet Printer (Includes Parallel to 9pin RS 232 Adapter Cable) Quote
025-0000-0458-01 RS 232 to Parallel Printer Cable / Adapter (DB9) Quote
Software Options
050-0000-0075-00 SSS - Statistical & Spreadsheet Interface Software Quote
050-1000-0060-00 Spring Data Collector Software (for use with DHT family testers) Quote
Power Supplies
025-1000-0396-00 Power Supply, 100-240 VAC 50-60 Hz (USA Plug) Quote
025-1000-0396-04 Power Supply, 100-240 VAC 50-60 Hz (International Plugs) 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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