MK 9151 - level relay### The MK9151 is used forLevel 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, e.g. recording temperature limits with PTC (device to IEG 255, VDE 0435 section 303) ### Features3 electrode connections for 2-point and 1-point level control The metering circuit galvanically isolated from the mains is immune from high levels of interference Max. lead length to the electrodes: 1500 m Wide setting range: 2 → 450 kΩ which enables differentiation between liquid and foam Adjustable response and fallback delay: 0.2 → 20 s Programmable for working current principle (without bridge) or rest current principle (X1-X2 and/or X1-COM bridge) 2 LEDs to indicate operating readiness and contact position 1 changer Overall width 22.5 mm, protection class IP40 **Input** |   ---|--- Liquid