Application Scenarios:

A municipal water utility operates a medium-voltage intake and four pump stations, and the original cubicle was populated the way cubicles were populated twenty years ago: one transducer per measured quantity. Voltage here, current there, a separate active-power transducer, a power-factor transducer, and a standalone kWh meter on the outgoing feeder. It worked, but it consumed roughly half a DIN rail of panel width, and every one of those devices was a separate ordering code, a separate spare and a separate calibration item. Worse, the utility had recently committed to reporting energy per pump run to its regulator, and the analog-only chain had no way to deliver kWh figures with a defensible audit trail.Replacing that stack with 442-2181111100​ collapsed the problem. One device now measures the three phase currents and three phase voltages, and derives active and reactive power, power factor and frequency internally; four programmable analogue outputs feed the existing PLC’s analogue input card with exactly the four signals the control philosophy actually uses — typically total active power, one phase current, bus voltage and power factor. The two digital outputs were configured as energy pulse transmitters, so the existing pulse-counting totaliser kept working without a new meter. And because 442-2181111100​ stores its internal meter registers every 203 seconds and holds them for up to 20 years, the plant gained a defensible consumption history that survives a power failure — data that previously required a separate, battery-backed meter.The second pain point was the commissioning process itself. Because every parameter on 442-2181111100​ — system type, transformer ratios, which measurand drives which output, the transfer characteristic of each output — is set from a PC over the RS232 port with the DME4 software, the utility’s technicians re-ranged the whole measurement chain in one sitting instead of physically re-swapping output resistors and re-labelling dials on four separate devices.This pattern — consolidation, energy accountability, and field re-configurability — is why 442-2181111100​ shows up in switchgear and motor control centres, water and wastewater pump stations, industrial substations, HVAC and building energy monitoring, and generator and cogeneration panels.

Parameter:

Technical Principles and Innovative Values:

• Innovation Point 1 — One acquisition front end, many derived quantities.​ 442-2181111100​ takes all three phase currents and three phase voltages through a single input transformer and multiplexer stage into a common A/D converter, then derives every other measurand in the microprocessor. Because power, power factor, frequency and energy are computed from one synchronised sample set rather than measured by separate instruments, there is no cross-instrument drift to reconcile and no timing mismatch between the voltage and power readings a controller sees.
• Innovation Point 2 — Universality that survives a design change.​ Each analogue output on 442-2181111100​ is programmable, and the hardware full-scale setting can also be changed afterwards, including converting a current output to a voltage output. In practice, a panel builder can stock one part number for what would otherwise be a matrix of fixed-range transducers, and a plant can re-purpose an output when the control philosophy changes years after commissioning.
• Innovation Point 3 — Energy metering with genuine persistence.​ The two internal meters on 442-2181111100​ write their registers every 203 seconds and hold them for up to 20 years with no auxiliary supply. That is a fundamentally different proposition from a meter that needs a battery or a supercapacitor: the audit trail survives a long outage, which is exactly what consumption reporting and cost allocation require.
• Innovation Point 4 — Logic built into the limit outputs.​ For two of the limit outputs, up to three measurands can be logically combined before the output switches. Instead of wiring external comparators and relays to build a condition such as “high current AND low power factor AND reverse power”, 442-2181111100​ evaluates it internally and presents a single clean open-collector signal.
• Innovation Point 5 — Configuration as a documented artefact.​ The DME4 software on 442-2181111100​ is password protected and supports power-system check, live display on a PC, output simulation for loop testing, and printing of a nameplate label recording the programmed settings. Commissioning teams can validate a whole analogue chain with outputs simulated before the plant is energised, and the blank type label supplied with the unit means the as-configured state is physically recorded on the device.
• Innovation Point 6 — Designed for the mechanical reality of legacy racks.​ In its EURAX form, 442-2181111100​ is a 100 × 160 mm Eurocard on a 14 TE front plate with DIN 41612 connectors — the same mechanical convention used across European 19-inch marshalling and protection racks for decades. That is why it remains the replacement of choice in cubicles where a modern DIN-rail device would require new panel cut-outs and rewiring.

Application Cases and Industry Value:

Case 1 — Switchgear retrofit in an industrial substation.​ A chemical plant’s 20 kV incoming cubicle and two outgoing feeders were instrumented with a row of single-function transducers originally commissioned in the 1990s, and the maintenance team had reached the point where several types were no longer purchasable. Rather than re-engineer the panel, the team standardised on Camille Bauer 442-2181111100​ in the existing 19-inch plug-in position. Because the EURAX build matches the original Eurocard format and connector pinning, the replacement was a like-for-like mechanical swap with no new drilling or re-marshalling. In configuration, the four analogue outputs were mapped to the four signals the existing SCADA analogue input card already expected — total active power, bus voltage, feeder current and power factor — so not a single PLC address had to change. The two digital outputs took over the limit alarm and the energy pulse duty previously handled by separate devices. The plant consolidated roughly four instrument types into one stocked part number, removed the obsolete-device risk from its spares list, and completed the changeover within a single planned outage window.Case 2 — Energy accountability across a water utility’s pump stations.​ A regional utility needed per-station kWh figures for regulatory reporting but had only analogue instrumentation at the remote sites and no budget for a communications upgrade. Fitting Camille Bauer 442-2181111100​ at each station solved the reporting requirement at the device level: the two internal meters were configured for kWh and kvarh, storing readings every 203 seconds with 20-year retention, while the existing analogue outputs continued to feed the telemetry system unchanged. During routine site visits, technicians read the stored meter data locally over the RS232 port using a laptop running DME4 — no new network infrastructure, no additional meter hardware, no change to the SCADA database. Where operators wanted a permanent local readout instead of a laptop, the optional SINEAX A200 display unit was connected directly to the transducer’s serial interface by a single RS232 cable, giving a 96 × 96 mm panel display of every measurand with 0.15% accuracy on voltage and current. Utility feedback focused on the practical outcome: regulator-grade consumption data obtained without touching the communications architecture, and a spares holding reduced to one part number across all sites.