ELM3702-0101 - Introduction
2-channel analog input, multi-function, 24 bit, 10 ksps, galvanically isolated, LEMO
The EtherCAT terminals from the ELM3xxx series were developed in order to enable the high-quality measurement of common electrical signals in the industrial environment. Flexibly usable measurement devices are especially useful in laboratory and testing technology environments. Therefore the ELM3702‑0101 multifunction terminal feature an input circuit that can be set to 76 different measuring ranges with partly different types of connection technologies, of 2- to 6-wire connection, depending on the type electrical connection via EtherCAT: from voltages of ±60 V to ±20 mV, thus supporting thermocouples and IEPE, a current of ±20 mA, a resistance measurement of 5 kΩ and thus also temperature RTDs (PT100, etc.), measuring bridges and potentiometers. Thus, most electrical measuring tasks can be solved with just a single terminal.
The 2-channel analog input, multi-function ELM3702‑0101 adds helpful functions to this series: The two channels are not only independently adjustable as in all ELM3xxx terminals, but also galvanically isolated from each other and from the EtherCAT bus. It can measure the occasionally used external cold junction in the thermocouple measurement directly by itself via Pt1000, query TEDS data in the sensor and supports 1000 Ω quarter-bridges.
With the LEMO plugs, it is primarily designed for laboratory use, where sensor configurations are changed on a daily basis and a stable and reliable plug connection is still required.
The ELM3702‑0101 is based on the ELM3702‑0000 with the following distinguishing features:
- galvanically isolated between the channels and ground,
- quarter bridge additionally 1000 Ω,
- TEDS class 2 on separate connections,
- LEMO connection 1B/308 (8 pole).