Operating Principle:

The impact body,which is equipped with tungsten carbide,impact velocities are measured at the 1mm point from the work piece in the following way:

the integrated permanent magnet will produce directly proportional voltage with the impact velocity. The Leeb hardness values are calculated by the following formula:

HL=1000X(Vb/Va)

Specification:

Measuring Method: Leeb Hardness Testing Method
Hardness Scale: HL, HB, HRB, HRC, HV, HS, σb
Measuring 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)
Impact device:D type impact device(Standard), Optional C/G/DC/DL/D+15
Accuracy: ±6HLD (HLD=800),Repeatability: less than 6HLD (HLD=800)
Measuring Direction: 360 degree by manual setting
Material: Steel & Cast Steel, Stainless Steel, GC IRON, NC IRON, Cast Aluminum alloy, Macht metal, Copper-tin alloy,Brass
Resolution: 1HL, 1HV, 1HB, 0.1HRB, 0.1HRC, 0.1HS
Display: LED with backlight
Memory: 100groups (each group include1-7 testing result  and 1 AVE value)
Communication: USB port(Standard)and Blue tooth(Optional)
Printer: Thermal Printer with blue tooth(optional)
Power: Two 1.5V  AA batteries
Working temperature: -10 to+50 Degrees Celsius, Size: 153mmX76mmX37mm(HXWXD)

Weight: 280g including batteries
Standard: GB/T 17394-1998,ASTM A956

Configuration:

Standard delivery: LM100main unit, D type Impact Device, Standard Test Block, Protective rubber Sheath, Small Supporting Ring, Cleaning Brush, User's Manual, DataView Software, Instrument Case

Optional accessories: Impact device: D/C/G/DC/DL/D+15, Standard Test Block, Blue Tooth Module &Thermal Printer, Belt, Standard Support Ring, Small Support Ring, Special Support Ring