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IRHP Instrumented Rebar
An instrumented rebar or sister bar is a load sensing element consisting of a hollow reinforcing bar containing a coaxially-mounted vibrating wire strain gauge. Compressive or tensile loads induced into the bar are measured directly with the strain gauge. Instrumented rebars are individually calibrated, correlating strain to load.
Instrumented rebars and sister bars are supplied with an integral temperature sensor. Model IRHP refers to the standard instrumented rebar size while model IRCL refers to the sister bar.
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SPECIFICATIONS
|
MODEL |
Nominal diameter1 |
Calibration range |
Maximum working load recommended |
Maximum working load to yield |
|
IRHP-2000 |
50 mm (2 in.) |
360 kN |
690 kN |
1155 kN |
|
IRHP-1375 |
34 mm (1 3/8 in.) |
160 kN |
275 kN |
325 kN |
|
IRHP-1250 |
31 mm (1 1/4 in.) |
130 kN |
215 kN |
260 kN |
|
IRHP-1125 |
28 mm (1 1/8 in.) |
100 kN |
160 kN |
200 kN |
|
IRHP-1000 |
25 mm (1 in.) |
80 kN |
135 kN |
160 kN |
|
IRHP-0750 |
19 mm (3/4 in.) |
45 kN |
75 kN |
90 kN |
|
IRCL-0500 |
13 mm (1/2 in.) |
27 kN |
— |
— |
1 Other sizes available upon request
|
Range of gauge |
3000 με |
|
Accuracy |
±0.25% F.S. |
|
Resolution |
0.4 με |
|
Operating temperature |
−20 to +80°C |
|
Thermistor |
3kΩ (see model TH-T) |
|
Cable |
IRC-41A (IRC-390 available with some sizes) |
|
Nominal rebar length |
1 m (standard) |
ORDERING INFO
Please specify:
- Rebar diameter
- Cable type and length
Accessories:
- High strength coupling
- Readout instruments: MB-3T(L), SENSLOG
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