Isothermal Stress Relaxation Tester
ASTM E328, ISO 15630-3
Isothermal Stress Relaxation Tester TT-PCSSR400-PCStrand
Torontech’s TT-PCSSR400-PCStrand is used to determine stress-relaxation of metal, such as concrete strand, prestressed concrete bar, and steel rope. Specimen is deformed at a given amount, decrease in stress is recorded over a prolonged period of exposure at constant elevated temperature.
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Torontech’s TT-PCSSR400-PCStrand the Standard Test Methods for Stress Relaxation Tests for Materials and Structure as per ASTM E328, as well as the Standard Test Method of Testing Prestressed Steel (Isothermal Stress Relaxation) as per ISO 15630-3.
Real time display Load versus Time, Temperature versus Time and Relaxation rate versus Time curves. Automatically calculation of 1000 hours tensile stress relaxation rate. High precision temperature recorder attached to record the influence of room temperature variations. Servo-controlled drive system ensures high precision load/displacement/strain close-loop control, as well as low noise. User configurable test methods and customizable report templates. Self-alignment design on specimen anchoring to ensure high accuracy. Patent calibration system mounted on machine to calibrate the load cell as well as the whole machine without disassembly the load cell from machine.
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Model
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TT-PCSSR400-PCStrand
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Standards |
ASTM E328, ISO 15630-3
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Capacity
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400 kN
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Measuring range
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16-400 kN
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Load resolution
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12N |
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Load accuracy
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±1%
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Load measuring accuracy
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±0.1% of reading to 1/100 of load weighing system capacity meets or exceeds the
requirements of the following standards: ISO 7500-1, EN 10002-2, ASTM E4, JIS
B7721 |
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Creep of load cell
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30 minutes <= 0.02%
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Position accuracy
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±0.5%
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Horizontal span
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1850 mm
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Ball Screw stroke
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100 mms
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Loading speed
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100 – 5000 N/S
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Speed accuracy
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Set speed＜0.05% - Max. Speed: ±1%, Set speed ≥0.05% - Max. speed:±0.5%
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Temperature accuracy
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Temperature sensor resolution:0.1℃
Temperature sensor accuracy:±0.3℃ |
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Position measurement accuracy
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±0.01 of reading or 0.0001 mm, whichever is greater
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Specimen Dimensions
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PC Strand (mm)
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Φ12.7～Φ15.24
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Φ12.7～Φ15.24
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Φ12.7～Φ15.24
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Φ15.2～Φ21.8
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PC Wire (mm)
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Φ3～Φ9
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Φ3～Φ9
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Φ3～Φ9
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Φ3～Φ9
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PC Bar (mm)
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Φ7～Φ18
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Φ7～Φ18
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Φ7～Φ18
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Φ7～Φ18
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Power supply
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Please specify voltage and frequency before placing the order.
Standard optional voltages 3ph, 220/380VAC, 50-60 Hz, Power must be free of spikes and surges exceeding 10% of the nominal voltage. |
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Operating temperature
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0 to +38°C (+32 to +100°F)
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Humidity range
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10% to 90% non-condensing
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Storage temperature
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-40 to +66°C (-40 to +150°F)
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Machine Dimension L x W x H
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1950 mm x 540 mm x 1015 mm
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Weight |
1400 kg
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