Bulletin 190 Civil Engineering Testing Equipment - Tinius Olsen

Integral Proving Rings
requirements are also available on
request.
Separate polished and ground pair of
Loading Pads for Compression Proving
Rings and pair of Shackles for Tension
Proving Rings are provided to suit each
proving ring.
Note:
All clamped boss load rings are
calibrated in kN and supplied with a
calibration chart.
Key Features
• Repeatability within 0.2% of
indicated load
• Accuracy within ±1% of indicated
load
• Works calibrated
Description
Tinius Olsen Clamped Boss Load Rings
are available in the range 1 kN to 50 kN.
The Proving Rings are made up of special
steel, carefully forged to give maximum
strength and machined to give high
sensitivity commensurate with stability,
ensuring long life and accuracy.
Specifications
The repeatability of all load rings is within
0.2% of indicated load and accuracy
is ±1% of indicated load over the
upper 80% of the working range, at the
calibration loads.
Ordering Information:
TO-274 Proving Ring, 50kN Capacity
TO-271 Compression Proving Rings,
25 kN Capacity
TO-264 High sensitivity proving ring
capacity 2 kN (200 kgf).
TO-284 Tension Compression Proving
Rings Capacity 2.0 kN
All proving rings are integral type viz.
the loading (outside) bosses are forged
integral with the ring body. This ensures
that there is no possibility of abutment
shift and consequent loss of accuracy
in reading that always exists with bolted
abutments.
The rings are supplied complete with
dial gauge and Works Calibration Chart,
individually packed in polished wooden
boxes. The repeatability and accuracy of
all clamped boss rings comply with the
requirements of NIS 0415 Accreditation
for the Calibration of Force Measuring
Rings and Load Cells used in Soil
Testing. Proving rings to meet special
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