SHOTCRETE STRESS CELL
MODEL IG - 1900
Shotcrete stress cells are designed to measure radial and tangential stresses in shotcrete linings in tunnels. This instrument provides the most significant data for determining thickness and stability of shotcrete lining in NATM (New Austrian Tunneling method). These cells consist of two rectangular stainless steel plates, welded together around their periphery and spaced apart by a narrow cavity filled with de-aired fluid and connected by a stainless steel tubing to a pressure transducer. The cell has a length of re-pressurising tube to restore contact between concrete and cell after the concrete has set. Provision of gas discharge tube protects the sensor against surge and lightning.
SPECIFICATIONS :
| Standard Ranges | 10,20,35,50, 100, 200 kg/cm² (Lower and Higher ranges on request) |
|---|---|
| Accuracy %fs | 0.5 %fs |
| Material (Outer Body) | Stainless steel |
| Operating Temperature | -10 to 70°C |
| Coil Resistance | 140 – 160 Ohm @ 25°C |
| Thermistor | 3k Ohm @ 25°C |
| Dimension(Pressure Cell) | 100 x 200 mm |
| Connecting / Re-pressurising tube | 6mm diameter |
| Pressure transducer | 22 mm diameter |
| Cable | 1m , 4 core shielded PVC. |