MH100 series of Pocket hardness meters, also known as pen-type hardness tester, hardness measurement, can be easily field testing a variety of hardness of metallic materials, supports a magnitude, Brinell, Rockwell and many other free conversion between hardness. Its integrated design, small size, easy to carry, high integration, performance is stable and reliable, and supports data transfer and print storage. Widely used in the metal processing industry, special equipment, permanent components of FMEA, inspection and other fields. Particularly suitable for large parts and no removable parts on-site hardness testing. Is to increase the production rate and cost savings necessary professional precision instrument.

Calculation method: HL=1000xVB/VA

In the formula: HL--hardness value

VB--impact of rebound speed

VA--impact body impact speed

Methods of measurement
Random hardness measurement before the first use to test instrument and indication error and repetition should not exceed the specifications provided in table 1-1
Start
Press the switch button, at this time the power is switched on, the instrument starts and entered State
Loading
Push the load lock down the impact body
Positioning
Impact device supporting ring according to the selected measuring fast on the surface, the impact should be perpendicular to the test surface
Measurement
Press the release button at the top of percussive machine, were measured. Request samples, impact device, the operator is stable, and force should be directed through the impact device axis. Each time they complete a measurement will display the measurement values on the screen; Hit count by 1; If the measuring range is exceeded, ringing a buzzer sound; After the set number of shocks, two sound of the buzzer short, wait 2 seconds after the show with a short buzzer sound mean. Each portion of the sample conducted a number of tests. Data should not exceed the average of 15HL. Between two arbitrary indentation from the Center or any indentation from the specimen edge distances shall comply with provisions of the following table. For certain materials, Leeb hardness value to be accurately converted into other hardness value comparison test must be done to get the corresponding score. By: standards by Leeb hardness tester and respectively in the hardness test on the same sample, for each a hardness value in more evenly distributed around the conversion of hardness indentation is needed in the determination of hardness, with average hardness and hardness on the Richter scale respectively as the corresponding value, hardness comparison curves. Contrast curves should include at least three groups correspond to the data. Instructions form 4-1
Read the measuring value
More effective tests for average hardness testing data.
Leeb hardness hardness values are shown before the symbol HL, HL behind impact device types are shown. Such as 780HLD d impact device for the determination of hardness value of 780.

For Leeb hardness conversion of hardness, hardness of Leeb hardness before the symbol, together with the corresponding symbol. For example 420HVHLD indicates that d-type Leeb hardness conversion impact device for the determination of hardness values was 420.
Note: the different types of impact device HL measured values, for example, 780HLD ≠ 780HLC.

Special tips
Under normal circumstances, when the number of shocks that are not set, you cannot store the current measured value
Only impact device d strength measurement function, so when you use DL and c type instrument, will not be able to switch to strength measurements
Not all material can be converted to all hardness and change the material hardness will automatically revert to Leeb HL. Set measurement conditions when selecting the materials, and then set the hardness

Impact device must not be used within a variety of lubricants

Instrument usage considerations
Has shaken the apparatus should be avoided
Avoid equipment placed too wet environments
Oil, dust adhesion to aging equipment, instruments should be cleared after use of dirt