[E. DOLD]

Level sensing relay MK 9151 varimeter

• According to IEC/EN 60 255, DIN VDE 0435-303
• 3 probe connections for 2-point and 1-point level control
• Also for use as moisture detector
• High interference resistance of the measuring circuit, which is isolated from the mains
• Max. wire length to the probes: 1500 m
• Large setting range: 2 ... 450 kΩ this permits differentiation between fluid and foam
• Adjustable response and release time delay: 0,2 ... 20 s
• Programmable for open circuit operation (without bridge) or closed circuit operation(bridge X1-X2 or X1-COM)
• For auxiliary voltages of 24 ... 415 V AC or 24 V DC
• Green LED for operation
• Yellow LED for contact position
• 1 or 2 changeover contacts
• Also available with sealable transparent cover
• Available with safe separation according to IEC/EN 61 140, IEC/EN 60 947-1
• Width 22,5 mm

Application
• Level monitoring and control for conductive liquids and powders, e.g. maximum and minimum filling levels, overfilling and protection against dry running
• Monitoring and control of the mixing ratio of conductive liquids
• General resistance monitoring tasks, e.g. limit temperature detection with PTC