JMHRS-150/45 "Aolongxin" precision full Rockwell Hardness Tester (mobile head type) adopts professional closed-loop sensor control technology to realize fully automatic control and hardness testing process.
The "Aolongxin" loading system uses a high-precision force sensor and a central controller to form a closed loop to continuously track and control the entire force-adding process. The depth measurement system uses a high-precision displacement sensor, which can obtain a minimum hardness value with a resolution of 0.1HR.
The stage is fixed, and the hardness test is performed by moving the indenter up and down. The fixed test bench can eliminate the coaxiality error caused by the up and down rotation of the traditional screw, greatly improving the accuracy and repeatability of the test, and also increasing the stability and efficiency of the machine's work.

· Fully automatic closed-loop sensor loading system and fixed test bench to achieve high-precision and rapid testing. Higher-level standard Hardness Testers can also be provided;
·Remote control can be achieved;
·Test 15 kinds of Rockwell and 15 kinds of superficial Rockwell hardness scales;
·Displacement sensor resolution 0.1HR;
· Determine the repeatability accuracy 0.5HR;
·High-speed step control, extremely fast test speed (1.75s);
·Comply with standards ASTM E18, ASTM E384, ISO6508 GB/T230;
· New design, mobile head, strong frame structure and good rigidity;
·High-precision loading system effectively avoids force measurement overload;
·High-precision linear guide rail controls the precise movement of the machine head;
·The automatic retraction function of the indenter can be used to continuously measure in and out of the fixed workbench;
· Automatically lift the machine head and automatically load the initial test force to ensure stable generation of force measurement;
·High-definition LCD touch screen operation, menu-type operation interface;
·Backlit LCD display, automatic data statistics and storage, RS-232 data output interface;
·Automatic loading and unloading, adjustable dwell time;
·GO/NG tolerance judgment;
·Correction of cylinder and sphere test values;
·The force measurement selection is linked to the hardness scale selection;
·Selectable operating languages ââinclude English and Chinese to facilitate user operation;
·Scale conversion HR, HB, HV;
·Built-in printer;
· Complete standard configuration to meet the testing requirements of all scales;