A: You should check the following:
1. Replace wrong or damaged indenters.
2. Replace worn or damaged Anvil. Replace if necessary.
3. Remove dirt and oil from under the anvil or indenter.
4. Change the rate at which the Major load being applied.
5. Replace the test block with a new one.

A: Please contact sinowon sales by sinowon@sinowon.com or by phone 0086-769-23184144.

A: You have two options:
1) Limited Free Technical Support on a call to local distributors.
2) Contact with Sinowon head technical support.

A: There is no published specification at this time which mandates block recalibration.

A: The method to connect the hardness tester with the computer is as follows:
a) Before the tester is switched on, take the RS-232 communication cable out of the accessories Kit and connect the tester with the computer (the computer must be off). Insert the 9-core pin into the 9-core output interface (10) of the tester, and insert another 9-core pin into the interface of COM on the computer.
b) Turn on the computer and single pressing on the computer page...

A: Make sure you have the proper load selected. If you have too light of a load selected, the indent will be considerably shallow.

A: We recommend that it be done annually.

A: The useful life of a test block is determined by the population and proximity of the indentations. The distance between the center of any two adjacent indentations shall be at least three times the diameter of the indentation. The distance from the center of any indentation to an edge of the test block or test piece shall be at least two and a half times the diameter of the indentation. Tests are to be taken on the top side of the block only.

A: No, it can not, unless it is a model SHR-145 tester. If it is, then it can be programmed to do superficial tests.

A: First, do not turn the tester on its side, the oil will leak out. Second, remove the weights and pack separately. And last, wrap some foam or bubble wrap around the power lever to prevent it from movement. Yes, it can be strapped to a packing skid, just make sure you don't have any straps laid across the elevating screw. Remember to remove indenters, blocks and anvils as well.

A: Yes, you can but your reading will be lower, up to 1 point lower than normal.

A: No, it can not, unless it is a model SHR-145 tester. If it is, then it can be programmed to do regular tests.

A: A. The Vickers indenter is a diamond ground to the shape of a square based pyramid with an angle of 136 degrees between faces. The depth of the indent it makes is about 1/7 of its diagonal length. The Vickers indenter penetrates about twice as far into the specimen as the Knoop indenter...

A: A. At the low hardness end of a ball scale the ball may penetrate too deeply causing the cap to come into contact with a specimen which would damage the cap...

A: The infinite hardness number is 100 for all Superficial hardness scales.