Load cell PRE
Application
The load cell PRE is an electrical transducer for the measurement of forces. It is mainly used to monitor anchor forces, in conventional and in prestressed structures (of any type). A load cell can also be used in other applications such as for anchor load testing, as well as lifting and load distribution on large containers.
For manual measurement the user friendly read-out unit Indipoc is used to display the load directly in kN. Due to its standard signal remote measurement is easily possible.A permanent load should not be more than 80% of the load cells nominal capacity (FS). For a short period the load cell may be loaded up to 110% of its nominal load without zero point shifting. The more rigid the supports (below and above of the load cell) the better the precision.
Description
The load cell PRE is designed for the use on construction sites. Basically it is maintenance free, splashproof, temperature compensated and of robust mechanical design.
Strain gauges are applied in a temperature compensated arrangement directly on a thermically treated steel cylinder. When a load is applied, a change in resistance on the strain gauges results due to the deformation of the steel zylinder.The electrical signal is adjusted in order for the actual load to be read directly in kN on the read-out unit. Even eccentric loads can be monitored precisely due to the strain gauges arrangement.
Technical Data
| Type | PRE 1000/78/80 | PRE 1000/100/80 | PRE 1500/125/80 |
|---|---|---|---|
| Nominal capacity (FS) | 0–1000 kN | 0–1000 kN | 0–1500 kN |
| Outside diameter | 115 mm | 135 mm | 160 mm |
| Bearing ring outside diameter | 92 mm | 111 mm | 139 mm |
| Bearing ring inside diameter * | 78 mm | 100 mm | 125 mm |
| Overall height | 80 mm | 80 mm | 80 mm |
| Measuring system | Strain gauges | Strain gauges | Strain gauges |
| Precision | 1 % FS | 1 % FS | 1 % FS |
| Temperature error | 0.01 %/°C | 0.01 %/°C | 0.01 %/°C |
| Resolution | 1 kN | 1 kN | 1 kN |
| Signal FS | 3.3 mV/V | 3.3 mV/V | 3.3 mV/V |
| Operating temperature | -30 bis +60 °C | -30 bis +60 °C | -30 bis +60 °C |
| Overvoltage protection | optional | optional | optional |
| Cable | TS-PUR / TAP47 | TS-PUR / TAP47 | TS-PUR / TAP47 |
| Type | PRE 2000/160/80 | PRE 3000/190/80 | PRE 10000/0/120 |
|---|---|---|---|
| Nominal capacity (FS) | 0–2000 kN | 0–3000 kN | 0–10000 kN |
| Outside diameter | 200 mm | 235 mm | 189 mm |
| Bearing ring outside diameter | 179 mm | 212 mm | 153 mm |
| Bearing ring inside diameter * | 160 mm | 190 mm | ohne Bohrung |
| Overall height | 80 mm | 80 mm | 120 mm |
| Measuring system | Strain gauges | Strain gauges | Strain gauges |
| Precision | 1 % FS | 1 % FS | 1 % FS |
| Temperature error | 0.01 %/°C | 0.01 %/°C | 0.01 %/°C |
| Resolution | 1 kN | 1 kN | 10 kN |
| Signal FS | 2.12 mV/V | 2.12 mV/V | 3.3 mV/V |
| Operating temperature | -30 bis +60 °C | -30 bis +60 °C | -30 bis +60 °C |
| Overvoltage protection | optional | optional | optional |
| Cable | TS-PUR / TAP47 | TS-PUR / TAP47 | TS-PUR / TAP47 |
