Sieves; Test Sieve & Screen Tray Verification & Services - Gilson SS-20 Operating Manual

Calibration Test Sieves
openings measured as inspection sieves. The higher
number of openings measured on each sieve increases the
confidence level to 99.73% that the standard deviation of
these openings is within the maximum allowed by ASTM.
Calibration sieves should be used in applications where a
very high degree of accuracy is required. Each calibration
sieve consists of a compliance sieve with added calibration
sieve verification service.
New Gilson test sieves are guaranteed to meet the
requirements of ASTM or ISO for compliance, inspection or
calibration grades as ordered, but for continued assurance
of performance, procedures should be in place to regularly
check working sieves as they age. Wire cloth stretches, sags
or even tears and abrasive materials reduce wire diameter,
causing an increase in opening size and loss of accuracy over
time.
These same verification services are also available for screen
trays used in Gilson testing
Porta-Screen®, and Gilso-Matic® machines.
Gilson Reverification Services
used ASTM or ISO Test Sieves or Screen Trays. An
optical comparator with NIST traceable calibration measures
opening and wire diameter sizes on each sieve.
Certification reports are produced for the appropriate grade.
These services are available for all ASTM and ISO sieve sizes
and types, and are ordered by specifying model number for
inspection sieve verification, or calibration sieve verification.
Sieves are not included in the purchase price. When
verifying used sieves, contact a Myers or Gilson service
representative for shipping instructions.
Master-Matched Sieves
woven-wire sieves from No. 8 (2.36 mm) to No. 325 (45
μm) that have been measured and shown to closely match
a set of master sieves maintained by Gilson in a reference
laboratory. Master-Matched Sieves from Gilson are always
matched to the same master set, assuring that one sieve
is very close to another. Master-Matched Sieves are also
certified to meet ASTM E11, so additional verification is not
normally necessary. Master-Matching is done using special
standard reference materials, sized for each sieve. Each
sieve is performance tested to insure it yields ±2% by weight
of the value of the master sieve.
Ordering
All Gilson test sieves meet ASTM or ISO requirements for
compliance test sieves. Ordering additional verification
services for each individual sieve upgrades them to meet
inspection or calibration specifications.
21 Washington Ave
14
Scarborough, ME 04074
have about twice as many
screens, Test-Master®,
can be performed on
are ASTM 8in diameter stainless
GV-65 Calibration Verification Shown with Sieve
Certificate of E11 Compliance for All Sieves
TEST SIEVE & SCREEN TRAY VERIFICATION & SERVICES
Description
Inspection Test Sieve Verification, ASTM E 11
Calibration Test Sieve Verification, ASTM E 11
Inspection Test Sieve Verification, ISO 565 and 3310-1
Calibration Test Sieve Verification, ISO 565 and 3310-1
Inspection Screen Tray Verification, ASTM E 11
Calibration Screen Tray Verification, ASTM E 11
Inspection Screen Tray Verification, ISO 565 and 3310-1
Calibration Screen Tray Verification, ISO 565 and 3310-1
Master-Matched Sieves
Model
GV-60
GV-65
GV-62
GV-63
GV-61
GV-66
GV-64
GV-67
MM-70
888.293.2121
sales@myerstest.com
myerstest.com
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