Additional Specifications:
Contrel EMA 90 Multifunction Meter & Energy Analyzer – Voltage inputs: 3 inputs (max 750V)
Digital outputs: 1 output (50V DC/500mA; 260V AC/100mA max)
Analog outputs: Programmable 0-20mA / 4-20mA
Expansion cards and their applications: Memory/expansion cards for 96x96mm panel-mount analyzers; these are factory-installed and available in various models depending on the application.
Model MEM1: Used to upgrade the device's internal memory to 1 MB.
Model 1AO: Used to provide a dedicated analog output (0-20mA or 4-20mA).
Model 2DO: Used to add two digital outputs to the standard two outputs (resulting in a total of 4 digital outputs).
Model 4DI: Used to add 4 digital inputs to the standard inputs (resulting in a total of 6 digital inputs).
Model S232/485: Used to add 4 digital inputs to the device (resulting in a total of 6 digital inputs).
Model PF/S: Used to provide a PROFIBUS-DP protocol port.
Model ETH: Used to enable Ethernet communication; features an RJ45 port and supports Modbus TCP, HTTP protocols, etc. NRG SW is a control and monitoring software application used to manage data from EMA series power analyzers via a PC.
The Contrel EMA-90 serves as a multifunction analyzer and energy meter for measuring energy exchange across high, medium, and low-voltage lines.
Key features of the EMA-90 energy meter:
Built-in memory (128 KB RAM)
Red LED display
Panel-mount design with 96x96 mm dimensions
Accuracy: ±0.5% for voltage and current; ±1% for power and energy

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