The "backplane" models AP2 and wp8 bmc are designed for use in control cabinets. Together with amplifiers 5B standard they allow a potential-free measuring and conditioning of almost all metrics. Input terminals simplify connecting cables and the built-in switching power supply 9... 30 VDC supply voltage ensures an optimal compatibility with existing systems. A rich assortment of 5B amplifier modules for different measured variables and measuring ranges are available from BMC meßsysteme GmbH. "Leader" among the 5B amplifier modules is universalverstärker model MA-UNI , the configured measurements for voltage, current, resistance, PT-100 and DMS can be used.