19_ rack, 3 HE with 7_ colour display, master CPU for user interface, calibration, and data logging Ready for installation of up to 4 measuring channels Power supply 90-264 V AC First measuring channel: Measuring channel with independent CPU and power supply 90- 264 V Current output 4-20 mA, isolated, max. 500 Ohm Relay output for error indication Two digital inputs for external empty and full adjust