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rear seat of a proximity switch head. In the main up and down the right side near the back
cover to install two proximity switches, control the major levers of the starting position and the
total trip. A, B 2 are close to the normal close switch A proximity switch. Turn, the motor
rotation, so that increased leverage to get the top A large lever close to the origin position
switch to give the computer, and then ensure that the machines pressure head position is
empty, the machine sensor zero, the electrical switch to reach the lever forward loading for
several load from start position to leverage back to the starting position. Please note that
changes can’t be arbitrarily close to the position switch, proximity switch B is below the lower
limit position and settings. When loading the B close to the switch, the protective role of loading
motor to stop while the display shows "ALARM", according to key reversal <OK> unloading. At
this point note: (1) 0.102F/D2 value properly selected, choose the appropriate value of the
smaller force. (2) The trial stage, not the work piece. (3) Pressure sensor failure. (Shall notify
the factory warranty)
1.4 Instruments will be issued during the unloading of some slight noise, which is automatically
adjusted for loading bodies, is normal.
1.5 In order to continuously improve the quality of the instrument, the Company will appropriately
update the instrument structure, so that the contents of manual with slightly different
equipment, but does not affect the operation function, without notice, please forgive.
6. Electric Principle Introduction
HBC-3000 Electronic Brinell hardness change the past, weight-type loading method, using
CPU control and sensor signal acquisition, closed-loop stepper motor control system of loading.
AD converter and a typical value of 25μs, nonlinear ± 1/2LSB.
Electrical works as follows: from the LF-3T Spoke collected sensor signals. After op Zoom, the
input to the AD574, after AD conversion, the voltage analog signals into 12-bit digital signal, and
then processed by the CPU operation, control, motor load, keeps the Netherlands, unloading and
other activities.
7. Use of Microscope
Figure 11 shows the measuring microscope is the hardness part of the optical measurement
system. It can help you observe the specimen and measure the diameter of indentation.
Micrometer eyepiece has two thin, a thin line in the move to remain stationary after indentation at
one end, while the other root is measured by rotating drum, to move to the other end of indentation
diameter. When you think that two lines in diameter and with exactly tangent to the ends, you can
read the measurement readings on the drum and through the panel number keys to enter the
hardness readings on the panel calculator.