Detailed Product Description

MODEL DHT-200 LEEB HARDNESS TESTER

Feature & Use:  

• Impact type hardness tester
• Build in Mini-printer
• 320 x 240 LCD display with backlight
• For most metals
• Based on the hardness HL value, conversion can be performed to HRB, HRC, HV, HB, HS and Tensile strength
• Impact devices DDCDLCD+15 and G are available for special applications
• Test at any angle, even upside down
• Lower and upper limits setting with low-high display judge

• High accuracy +/- 0.5%
• USB output for both recharging and data transfer to PC
• Extended memory in 1250 dates
• Works on 4 standard AA batteries or 4 AA rechargeable batteries
       with working 48 hours continuously (with ought backlight)
• Auto shutdown after 2min, 5 min, 8min selection
• Conforming to ASTM A 956

Specifications  

Display LCD: 320 x 240 LCD with LED back-light

Display Functions: Impact direction, Date, Time, Battery power status, Memory reference,

                            Hardness scale, Hardness value, Average value, Max/Min value, Material,
                                Type of impact device connected, Times

Accuracy: Within + / -0.5% (HLD=800)

Hardness Parameter: HL, HRC, HRB, HV, HB, HS

Measuring Range/Metallic: See the table 1

Tensile Strength UTS range (steel only):σb from 370 to 2000 (106 N/mm≈)

Testable workpiece:

Thickness coupled: Minimum 3 mm or more (Except with Impact device G:10mm)

Mass: 5kg or more (2-5kg on solid support ,2kg with couplant paste)

Surface roughness: Ra 10

Radius (convex/concave): Rmin=30mm or more (30mm with support ring )

Test Points: 5mm or more from the edge of the sample, 

                  3mm or more to each of the tested points

Optional Impact Device: D / DC / D+15 / DL / C / G

Impact Device Recognize: Manually / Automatically

Memory: 200 files with most 1750 average readings depending on the average times set

Output: USB interface or Built-in mini-printer

Limitation: upper or lower limitation

Shutdown: 2min, 5 min, 8min or never shut down selection

User Defined: Defined the measurement conditions

Power supply: 4 AAA standard batteries or 4 AAA rechargeable batteries with 

                     working 48 hours continuously (without backlight)

Operating temperature: -20 to+50

Dimensions: 215mm×140mm×45mm

Weight: 450g ( with 4 AAA batteries)

Standard Delivery

Main Unit

AC adapter/charger

Small supporting ring

Aluminium carrying case

Impact device D

Operation manual

Software and cable

Cleaning brush

Test block with HLD value

Certificate

Optional accessories

Impact devices D, C, DC, D+15, DL, G                  

Special support rings