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NOTE! Do not resurface test blocks or try to use non-Proceq
indenters. This will impair accuracy and may also deteriorate
functionality of the Portable Rockwell.
10.1.3 UCI
The allowable tolerances for the UCI performance test differ depending
on the selected standard. According to the DIN 50159 it should typically
not differ more than 5% from the given value. This tolerance is getting
wider for harder test blocks. The Equotip 550 considers these limits ac-
cording to the standard.
According to the ASTM A1038 the values may not deviate by more than
3%, no matter what hardness is tested.
• Check to have the correct settings selected, i.e. no conversion acti-
vated.
• Clean the indenter, paying close attention especially to the front part
(diamond).
• Check that the test block is clean, smooth and dry. See chapter
"3.3.3.2 Sample Preparations". Replace the test block if there is insuf-
ficient space for additional tests.
• Check the mounting and wear of the special foot. Check for deposits.
Clean or replace if necessary.
• If the test was conducted while the device was not held vertically on
the surface, the reading can be misleading. This may occur especially
when using the standard foot. Try using the special foot, or take more
care to align the probe vertically to the surface.
© 2016 Proceq SA
• Test piece is not fulfilling the geometry requirements or is insufficiently
supported. Check chapter "3.3.3.4 Test Conditions" for the minimum
requirement. Prepare the test piece for the test i.e. by supporting it
with a larger metal piece.
• If the instrument still shows excessive deviations: Return the device
to an authorized Proceq Service Centre for recalibration / inspection.
NOTE! Do not resurface test blocks.
10.2
No Reading Displayed
• Check the connection of the probe.
• Check if a genuine Equotip impact body (with the engraving "equo") is
inserted in the impact device by unscrewing the support ring.
• Check for tight seating of the support ring on the thread of the impact
device.
• Check for tight seating of the support ring on the thread of the impact
device.Check whether the impact body is armed and released when
conducting the load – trigger procedure. If not, the catch chuck of the
impact device may be broken or the impact body is inserted upside-
down. Insert the impact body correctly or replace the impact device
with a basic Equotip Leeb impact device.
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