Dold Liquid Level Relay - DIN Rail, 24 V dc 1

IEC/EN 60 255, DIN VDE 0435-303. CE. MK 9151N - level relay. Application. Level monitoring and control of conductive liquids and powders, e.g. maximum and minimum fill level, protection against overfilling and dry running Monitoring and control of the mix ratio for conductive liquids General resistance monitoring tasks, e.g. recording temperature limits with PTC Contact protection relay with delay. Features. 3 electrode connections for 2-point and 1-point level control Measuring circuit for electrodes works on AC voltage generated internally in the device (approx. 30 Hz); therefore no electrolysis occurrence in the fluid The measuring circuit galvanically isolated from the mains is immune from high levels of interference Max. lead length to the electrodes: 3000 m Wide setting range: 2 kΩ → 450 kΩ which enables differentiation between liquid and foam Response and fallback delay: 0.2 s → 20 s, adjustable separately for MIN and MAX level Programmable for operating or rest current principle LEDs to indicate operational readiness and contact position Output contact 2 changeovers Overall width: 22.5 mm