AL200 is an innovative improvement in hardness measurement mechanism and circuit performance based on the existing Leeb hardness measuring instrument products. Through the innovation of technology and process and no less than 72 hours of factory aging treatment, the product has higher accuracy, more stable measurement value and stronger function. The unique advantages of AL200 are the two data processing solutions, a portable all-Chinese self-powered thermal high-speed printer and a humanized processing software connected to a PC. On-site printing is convenient and fast, quiet and flexible, so as to meet the on-site needs of different personalized users. Low-power design, connected to computer data exchange, mass storage. Low-power design, no less than 100 hours of standby time, AA No. 5 ordinary battery power, easy to carry, more flexible replacement. It is especially suitable for job sites and field operations.

Measuring range:(170-960) HLD,(17-68.5)HRC,(19-651)HB,(80-976)HV,(30-100)HS,(59-85)HRA(13 -100)HRB
Measurement direction: support 360º (vertical down, oblique down, horizontal, oblique up, vertical up)
Hardness: Leeb (HL), Brinell (HB), Rockwell B (HRB), Rockwell C (HRC), Rockwell A (HRA), Vickers (HV), Shore (HS)
Display: dot matrix LCD, 128×64 graphic dot matrix LCD
Data storage: up to 500 groups (impact times 32~1)
Operating Voltage: 3V (2 AA size alkaline batteries in series)
Continuous working time: Approx. 50 hours (when the backlight is not on)
Communication interface standard: RS232
Steel & Cast Steel, Alloy Tool Steel, Stainless Steel, Grey Cast Iron, Ductile Iron, Cast Aluminium Alloy, Copper-Zinc Alloy (Brass), Copper-Tin Alloy (Bronze), Pure Copper, Forged Steel
Ambient temperature: -20~+60°C operating temperature, -30°C~+60°C storage temperature
Relative Humidity ≤ 90%;
There is no strong vibration, no strong magnetic field, no corrosive medium and no serious dust in the surrounding environment.
Data transfer processing software

安环君; 张书玲; 赵春华 - 《理化检验(物理分册)》