Straight rod element dimensioning 

The determining factors when dimensioning straight rod elements are the specific loads and the  temperature limits of the heated material, the tube shell and the heating conductor. 

If the heating element is accurately dimensioned, it will operate reliably and over a long period. This also requires the element to be installed correctly and have an adequate outflow of heat. The temperature limits of the medium and, if liquids are heated, suitable protection against boiling dry should also be considered.

E.G.O straight rod elements from E.G.O are supplied in lengths ranging from 914mm (3ft) to 2439mm (8ft). 

DIN 44875 also includes recommended specific surface loads.

Tube shell temperature 

The tube shell temperature depends on the specific surface load and the surrounding medium. A surface load of 5 W/cm² for operation in air, for   example, results in a  surface temperature of approx. 670°C (steady state).

Compression Glands for Straight Rod Elements

Typical E.G.O Straight Rod Elements

Ambient temperature

In applications with static air, the tube shell temperature is a function of the ambient temperature and installation conditions.

Rod Element End Connections:

Straight rod tubular elements are fitted with a standard M3 x 20mm long thread and are supplied with locking nuts and washers.

Note: Available for volume orders, CDR Technical    Services Ltd are able to arrange for straight rod       elements to be bent to customers specification. For further information, please contact our Sales Department.

Click Here for Available Elements

Short Gland Assemblies are supplied separately for wet applications, or were a air tight seal is required. This is created by using a brass olive which compresses onto the element when the locking nut is tightened.

Example: If the surface load is 6 W/cm² and the ambient temperature is 300°C, the surface temperature will be 800°C.

E.G.O Elements are all VDE and UL approved.

Typical Short Gland for water tight seal