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IRHP Instrumented Rebar

HIGH STABILITY AND SENSITIVITY

RUGGED, WATERPROOF CONSTRUCTION

AVAILABLE FOR MOST REBAR SIZES

Instrumented rebars and sister bars are used to measure load in concrete reinforcing bars or strain in concrete structures.

Description

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.

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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