Industrial Electronics

Thermocouple/Voltage Instrument Offers Accuracy, Speed and Power over Ethernet+

11 August 2017

Source: AMETEK VTI InstrumentsSource: AMETEK VTI Instruments

The EX1401 precision, 16-channel, isolated thermocouple and voltage measurement instrument has been introduced by AMETEK VTI Instruments as part of its LXI portfolio.

The EX1401 delivers accuracies of ±0.20° C with 1,000 V channel-channel isolation, built-in self-test capabilities, and independent 24-bit ADC’s per channel. Independent Cold Junction Compensation (CJC)—implemented on a per channel basis—and Open Thermocouple Detection (OTD) further enhance the instrument’s capabilities.

Unlike other thermocouple and voltage measurement instruments, the EX1401 offers Power over Ethernet+ (PoE+) and flexible DC power options for portable applications. With PoE+, the test engineer does not need to connect both data and power cables, but simply places the instrument anywhere in a test chamber, or around the test article, and connects it to the network.

With the ability to acquire data at 20K samples/second/channel, the EX1401 can be deployed in situations that demand rapid responses to quickly changing conditions, including high-speed temperature transient applications. It has applications in automotive and battery testing; highly accelerated life test/highly accelerated stress screening (HALT/HASS); health monitoring; and jet engine testing.

An industry-standard LXI interface allows the EX1401 to be distributed and positioned close to the device-under-test, reducing the implementation and support costs associated with long cable lengths. This also reduces transducer cable lengths and associated coupled EMI interference, helping improve measurement accuracy. In addition, the instrument features a comprehensive, built-in self-test function that reports instrument status and problems, maximizing run-time performance.

A full-featured embedded web interface provides configuration and data displays, simplifying setup and usage. EXLab Express, VTI’s intuitive data acquisition software, is included with each instrument, eliminating the need for programming.

Parallel data storage and standalone autonomous operating modes further expand the utility of this versatile instrument. The EX1401 also supports IEEE 1588 Precision Time Protocol (PTP), allowing engineers to synchronize measurements from many devices throughout the test application.

Features at a Glance
• Typical accuracies of ±0.20° C
• 16-channel isolated universal thermocouple/voltage inputs
• Power over Ethernet+ (PoE+)
• 20K samples/second/channel sample rate
• 24-bit ADC per channel
• 500 V channel-ground isolation
• 1,000 V channel-channel isolation
• Data logger acquisition mode
• Built-in parallel data streaming
• Full-featured embedded web interface
• LXI Ethernet interface
• 8-bit bank isolated digital I/O
• Compact 1U half-rack form factor

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