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Resisitve anchor load cell

The resistive anchor load cell is a special ring-shaped instrument in stainless steel. It is used for testing the tension of strand anchors and anchoring bars or for monitoring these on the medium- and long-term. It is sensitized by a set of strain gauges in a full Wheatstone bridge configuration so as to supply a load-proportional electric signal and increase the accuracy by reducing the sensitivity of the instrument to temperature variations. It is supplied with a cable whose length must be specified on order. It is absolutely the most accurate load cell and is used in construction sites. The ring-shaped load cell is chosen to suit the diameter and nominal load of the anchor.

TECHNICAL FEATURES

  • Measuring range: 350-2500 kN;
  • Sensitized ring with 16 strain gauges;
  • Wheatstone bridge:
  • input resistance 1450+50 Ω, ouput resistance 1400+/- 5 Ω;
  • Nominal sensitivity: 2.0 mV/V +/- 0.15%;
  • Repeatability: +/- 0.015% F.S.;
  • Optional output signal: mV/4-20mA;
  • Admissible overload: 130% F.S.;
  • Ultimate tensile stress: >200%F.S.;
  • Combined error (total precision): <+/-3% F.S.;
  • Maximum deflection under load: 0.4 mm;
  • Protection class: IP68;
  • Material: stainless steel;
  • Electric power supply: 5/15 V DC;
  • Operating temperature: -15/+70°C;
  • Insulation resistance: >5GΩ;
  • Temperature coefficient of zero: +/-0.005% F.S./°C;
  • temperature coefficient of F.S.:  +/-0.005% F.S./°C;
  • Cable length and section 6 x 0.34 mm2.

DIMENSIONAL AND FULL SCALE SPECIFICATIONS

Code Measuring range (XXXX) Hole diameter (A) Sensitive ring diameter (B) Outer diameter (C ) Thickness (D)
kN mm mm mm mm
CCRtor165-XXXX from 500 to 2500 165 190 260 40
CCRtor120-XXXX from 350 to 1800 120 135 200 40
CCRtor110-XXXX from 350 to 1500 110 135 200 40
CCRtor71-XXXX from 350 to 1000 71 91 155 40
CCRtor50-XXXX from 350 to 1000 50 91 155 40
CCRtor40-XXXX from 350 to 1000 40 91 155 40
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