Barrel Heaters

Special Mica Band

Clamping Variations

The standard clamping straprequires 14 mm (0.563 in.) clearance above the heated surface, at the barrel nuts. When clearance is limited, smaller barrel nuts can be used which require only 9 mm (0.375 in.) clearance. The clearance required by the clamping screwdepends on the screw length andthe diameter of the heater. The low- profile clamping strap is standard on units less than 45 mm (1.375in.)wide and utilizes a 13 mm (0.5in.) wide strap. Consult Watlow for moreinformation. To order, specify welded barrel nuts and
(0.563 in.)14 mm gap dimension when ordering. Welded Barrel Nuts An ideal way to provide access for instrumentation is to specify an oversized gap between the heater ends. If the clamp specifications strap interferes with the positioning of the instrumentation device, welded barrel nuts are recommended.Maximum gap is 25 mm (1 in.) Specify
14 mm(0.563 in.) Spot Welded See page 30 forminimum/maximumdimensional requirements. 34