Conductive level controller NRG 16-52, NRS 1-55,

for boiler

Level control of the feedwater and pressure expansion vessel is achieved by means of a NRG 16-52 multiple level-control conductivity electrode. The NRS 1-55 level switch is used for the level control (pump ON/OFF), and the NRS 1-52 for the separate high level alarm. The switchpoints for the multiple level-control electrode are set by shortening the individual electrode tips until the desired switchpoint is reached.