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Products > Portable Hardness > Leeb Hardness Tester > Pen Style Hardness Tester(Upgrade)
Product : Pen Style Hardness Tester(Upgrade)
Model : DH110
Country of Origin : CHINA
Brand : DTEC
Quality Certified : CE,GB/T 17394-1998, ASTM A956
Delivery Time : 3 days
Packing Weight : 5.0KG
Dimension : 37x30x12cm(LxWxH)
Package Type : Maker's Standard Export Carton
Courier : DHL/TNT/FedEx/UPS/EMS/Shipping Agent
Payment Term : TT100%/Private Bank Account/L/C/Paypal/Western Union
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  • Product Intro
  • Feature
  • Specification
  • Packing List
DH110 Pen Style Hardness Tester is an upgraded model based on model DH100,containing all fuction of DH100, It add fuction of data processing software by USB interface to further analysis and optional printer connecting;fuction of large memory capacity of 1000 groups;and function of interchangeable between D type and DL type impact device.enable it to testing hardness of wheel gear and other special toothed specimens.
Similar as DH100,it can be performance in a narrow space, in which other hardness testers feel difficult to measure. It is applicable to big specimen on-site hardness testing and batch testing on the specimen in production lines. Moreover, it is also used in metal manufacturing industry, transportation, Power station, petrochemical industry, aircraft industry,construction and lab,etc.


Working Principle:
When the impact body,with a certain weight,impacts against the specimen surface under the action of spring force,Leeb hardness comes from the ratio of the impacting velocity(VA) and the rebounding velocity(VB) of the impact body by the moment the spherical testing tip is located at 1mm point from specimen surface.
With principle of electromagnetism,the permanent magnet in the coil of impact device produced an induced voltage, which is in proportion to the impact body velocity.

The leeb hardness values are calculated by the following formula:

HL=1000X(Vb/Va)





Using Scopes:
Wheel gear and other toothed specimens
Die cavity of molds
Bearings and other parts
Failure analysis of pressure vessel, steam generator and other equipment
Heavy work piece
The installed machinery and permanently assembled parts
Testing surface of a small hollow space
Material identification in the warehouse of metallic materials
Rapid testing in large range and multi-measuring areas for large-scale work piece

►The Unique Large-screen OLED (1.77 inch OLED) colorful display integrated hardness tester in the world;


►Pen style design, lightweight, small size, self contained Impact device and display integrated): no cables;

►Interchangeable between D type impact device (standard) and DL type impact device (optional), achieving one unit dual use,which is suitable to be used in the measurement in the restricted areas;

►Double coil design for impact device, without A/D conversion error, which enables to get the speed ratio directly with high repeatability;

►With battery compartment, battery can be replaced. Using standard AAA chargeable Lithium battery;


►High accuracy in any impact direction (360°), automatically identify impact direction and gravity compensation;

►Easy Operation, the four soft keys above the screen achieve the various functions;

►6 Exchangeable hardness scales (HRB/HRC/HV/HB/HS/HL), measurable for the hardness strength σb;


►8 kinds of material available, suitable to measure the hardness of all metallic materials;


►1000 groups storage capacity, with standard data proceeding software and USB cable, enable to connect to PC and make further data analysis;


►Excellent after-sale service system for high quality products.Easy to buy and convenient to use.
 
Display

Colorful display, 1.77 inch large OLED with resolution 160x128 pixels.

Testing Range

HLD(200-960),HRC(19.8-68.5), HRB(13.5-100), HB(30-651), HV(80-976), HS(26.4-99.5), σb (375-2639).

Hardness Scale
HL, HB, HRB, HRC, HV, HS, σb.
Impact Device

Standard: D Type, Optional: DL Type

Calibration
Automatic
Accuracy
±6HLD (HLD=800), Repeatability: <6HLD (HLD=800)
Resolution

1HL, 1HV, 1HB, 0.1HRB, 0.1HRC, 0.1HS

Testing Direction
360 Degree by Manual Setting
Available Material

Steel& Cast Steel, Stainless Steel, GC iron, NC iron, Cast Aluminum alloy, Copper-zinc alloy, Copper-tin alloy, Brass.

Storage

1000 Groups (each group include 6 testing results and 1 average value)

Communication

USB port, used for recharging and data transmission.

Software

Standard LmVIEW Software for transmission, storage, and printing

Working Temp.
-10°C—+50°C
Power Supply

AAA Polymer lithium battery, capacity of 600 MA/H,voltage:3.7 V, warning when under low voltage

Auto Off

AUTO OFF after 3 minutes of inactivity

Dimension
37x30x12cm (LxWxH)
Packing Weight
About 5.0 KG
Quality Standard
GB/T 17394-1998, ASTM A956


























Error and Repeatability of Displayed Value:

No.
Type of impact device

Hardness value of Leeb standard hardness block

Error of displayed value

Repeatability
1
D
760±30HLD
530±40HLD
±6 HLD
±10 HLD
6 HLD
10 HLD
2
DC
760±30HLDC
530±40HLDC
±6 HLDC
±10 HLDC
6 HLD
10 HLD
3
DL
878±30HLDL
736±40HLDL
±12 HLDL
12 HLDL
4
D+15
766±30HLD+15
544±40HLD+15
±12 HLD+15
12 HLD+15
5
G
590±40HLG
500±40HLG

±12 HLG

12 HLG

6
E
725±30HLE
508±40HLE

±12 HLE

12 HLE

7
C
822±30HLC
590±40HLC
±12 HLC
12 HLC
 

Testing Range in Different Materials with Different Impact Devices:

Material
Method
Impact device
D/DC
D+15
C
G
E
DL
Steel and cast steel
 
HRC
20~68.5
19.3~67.9
20.0~69.5
 
22.4~70.7
20.6~68.2
HRB
38.4~99.6
 
 
47.7~99.9
 
37.0~99.9
HRA
59.1~85.8
 
 
 
61.7~88.0
 
HB
127~651
80~638
80~683
90~646
83~663
81~646
HV
83~976
80~937
80~996
 
84~1042
80~950
HS
32.2~99.5
33.3~99.3
31.8~102.1
 
35.8~102.6
30.6~96.8
Cold work
tool steel
HRC
20.4~67.1
19.8~68.2
20.7~68.2
 
22.6~70.2
 
HV
80~898
80~935
100~941
 
82~1009
 
Stainless steel
 
HRB
46.5~101.7
 
 
 
 
 
HB
85~655
 
 
 
 
 
HV
85~802
 
 
 
 
 
Grey cast iron
 
HRC
 
 
 
 
 
 
HB
93~334
 
 
92~326
 
 
HV
 
 
 
 
 
 
Nodular cast iron
HRC
 
 
 
 
 
 
HB
131~387
 
 
127~364
 
 
HV
 
 
 
 
 
 
Cast aluminum alloys
HB
19~164
 
23~210
32~168
 
 
HRB
23.8~84.6
 
22.7~85.0
23.8~85.5
 
 
BRASS(copper-zinc alloys)
 
HB
40~173
 
 
 
 
 
HRB
13.5~95.3
 
 
 
 
 
BRONZE(copper-aluminum/tin alloys)
HB
60~290
 
 
 
 
 
Wrought copper alloys
HB
45~315
 
 
 
 
 
 

Testing Parameter of Impact Devices: 

Type of impact device
DC(D)/DL
D+15
C
G
E
Impacting energy
Mass of impact body
11mJ
5.5g/7.2g
11mJ
7.8g
2.7mJ
3.0g
90mJ
20.0g
11mJ
5.5g
Test tip hardness
Dia. Test tip
Material of test tip
1600HV
3mm
Tungsten carbide
1600HV
3mm
Tungsten carbide
1600HV
3mm
Tungsten carbide
1600HV
5mm
Tungsten carbide
5000HV
3mm
synthetic diamond
Impact device diameter
Impact device length
Impact device weight
20mm
86(147)/ 75mm 50g
20mm
162mm
80g
20mm
141mm
75g
30mm
254mm
250g
20mm
155mm
80g
Max. hardness of sample
940HV
940HV
1000HV
650HB
1200HV
Mean roughness value of sample surface Ra
1.6μm
1.6μm
0.4μm
6.3μm
1.6μm
Min. weight of sample
Measure directly
Need support firmly
Need coupling tightly
 
>5kg
2~5kg
0.05~2kg
 
>5kg
2~5kg
0.05~2kg
 
>1.5kg
0.5~1.5kg
0.02~0.5kg
 
>15kg
5~15kg
0.5~5kg
 
>5kg
2~5kg
0.05~2kg
Min. thickness of sample Coupling tightly
Min. layer thickness for surface hardening
 
5mm
 
≥0.8mm
 
5mm
 
≥0.8mm
 
1mm
 
≥0.2mm
 
10mm
 
≥1.2mm
 
5mm
 
≥0.8mm
Size of tip indentation
Hardness 300HV
Indentation diameter
Depth of indentation
0.54mm
 
24μm
0.54mm
 
24μm
0.38mm
 
12μm
1.03mm
 
53μm
0.54mm
 
24μm
Hardness 600HV
Indentation diameter
Depth of indentation
0.54mm
 
17μm
0.54mm
 
17μm
0.32mm
 
8μm
0.90mm
 
41μm
0.54mm
 
17μm
Hardness 800HV
Indentation diameter
Depth of indentation
0.35mm
 
10μm
0.35mm
 
10μm
0.35mm
 
7μm
--
 
--
0.35mm
 
10μm
Available type of impact device

DC: Test hole or hollow cylindrical; DL:Testslender narrow groove or hole

D+15: Test groove or reentrant surface
C: Test small,light,thin parts and surface of hardened layer
G: Test large, thick,heavy and rough surface steel
E: Test super high hardness material
 

 Standard Packing List:
No.
Items
Qty.
1
DH110 Main Unit (D)
1
2
Standard Hardness Block
1
3
Cleaning Brush
1
4
Small Support Ring
1
5

AAA chargeable Polymer lithium battery

1
6
Charger
1
7

Manual, Warranty Card, Quality Certificate

1 each
8
Data Pro Software and USB Cable
1
9
Package Case
1

Optional Accessories:
No.
Items
Notes
1
Impact Device
DL Type
2
Impact Body
For DL Type
3
Supporting Ring

Standard Type and Special Type, 12pcs/set

4

Data Processing Software & USB Cable

 
5

Standard Leeb Hardness Testing Block

750-850HLD,590-670HLD,490-570HLD,550-630HLG,460-540HLG
6

Blue Tooth Wireless Thermal Mini Printer

 
7
Instrument Case
35x28x10cm(LxWxH)

Impact Devices(D/DL)






3-Pin Cable for Impact Device
 (D/DL), 1.5M in length



Impact Body
 (D/DL)
 


Supporting Rings(12 pcs. each set)

Specification of Supporting Rings:

Data Processing Software (including USB cable)


Standard Leeb Hardness Testing Block
Items
Size
Dimension
Product Picture


Leeb Hardness Standard Block

750-850HLD

Ф 90 × 55 mm
2.75KG Each

 

590-670HLD
490-570HLD
550-630HLG

Ф120 × 70 mm
6.4KG Each

460-540HLG

AA Grade Leeb Hardness Standard Block

750-850HLD

Ф 90 × 55 mm
2.75 KG Each


 
 
590-670HLD
490-570HLD
550-630HLG

Ф120 × 70 mm
6.4 KG Each

460-540HLG
Blue Tooth Wireless Thermal Mini Printer