The sensor measures the boom angle. The hook radius displayed is based upon the crane boom length and geometry, calculated so the operator will have hook radius displayed in metres or feet.
The sensor is simple to install and is calibrated with using two known radii only.
The outside overall box dimensions are H x W x D; 133 x 133 x 128mm (5.2 x 5.2 x 5"), the material is cast iron, hot dipped galvanized and coated both inside and outside (weight approx. 8 kg/18 Lbs).
The unit is sealed to IP66 (dust tight and heavy seas). The operation temperature is between -40 to + 65 degrees C (-40 to + 150 degrees F).
The unit is certified for zone 1 (Class 1 Div 1) operation, II 2 GD EEx d IIB T6 according to ATEX , Directive 94/9/EC.