E-TC Ethernet-based 8-Channel Thermocouple Input Device
5Pages

E-TC Ethernet-based 8-Channel Thermocouple Input Device Features • Eight 24-bit differential thermocouple (TC) inputs with TC channel-to-host isolation − 4 S/s per channel maximum sample rate − Two integrated cold junction compensation (CJC) sensors − Open thermocouple detection − Supports J, K, R, S, T, N, E, and B type thermocouples • 8 digital I/O isolated from TC inputs and host The E-TC devices offers eight thermocouple channels and eight DIO channels which are bitconfigurable for input or output. Output bits can be further configured as thermocouple alarms. − ±24 mA drive capability • 10/100 Ethernet interface Overview The E-TC offers high-accuracy temperature measurement with an Ethernet interface. The device offers the best value per channel and the best possible accuracy because the accuracy of the internal measurement electronics exceeds the accuracy specifications of the thermocouple sensors. The E-TC is functionally equivalent to the USB-TC, making application migration very easy. Ethernet Interface The E-TC has a built-in high-speed communication port. Users can remotely access and configure the device with software over the Internet. The E-TC has eight digital I/O channels that are electrically isolated from the analog circuits. Each bit is individually configurable for input or output. Thermocouple Input Connect up to eight differential thermocouple (TC) input channels to the E-TC. The E-TC supports a maximum sample rate of 4 S/s per channel, and TC types J, K, R, S, T, N, E, and B. TC types are software-selectable per channel. Cold-Junction Compensation The E-TC has two high-resolution coldjunction compensation (CJC) sensors (one per four TC inputs). Open-Thermocouple Detection The E-TC is equipped with open-thermocouple detection (OTD) for all TC input channels. With OTD enabled, users can monitor for broken or disconnected TCs. Measurement Computing − Digital outputs configurable as TC alarms Data can be transferred at rates up to 5 kS/s when the device and host are connected by Ethernet to the same local network. Typical throughput is system-dependent. • Required +5 V external power adapter included Supported Operating Systems • Windows 11/10/8/7/Vista® 32/64-bit • Linux® • Android™ Use the alarm outputs to control a device or application that indicates when a temperature threshold has been exceeded, or to indicate an OTC condition. Counter Input The 32-bit event counter pin counts TTL pulses, and accepts frequency inputs up to 10 MHz. All DIO channels are pulled high by default to 5 V through 47 kΩ resistors with a jumper on the circuit board. Each jumper configures the digital port for pull-up or pull-down. The E-TC requires external power from the 5 volt, 1 amp power adapter (PS-5V1AEPS) included with the device. Temperature Alarms Each digital output can be optionally configured as an alarm for each TC input. When an alarm is enabled, the output line associated with the alarm is driven to the appropriate state determined by the alarm options and input temperature. The E-TC is factory-calibrated using a NIST-traceable calibration process. Specifications are guaranteed for one year. For calibration beyond one year, return the device to the factory for recalibration. The E-TC also offers field calibration so that users can calibrate a device loc

E-TC Software Software Support The E-TC is supported by the software in the table below. Ready-to-Run Applications Data acquisition companion software with drag-and-drop interface that is used to acquire, view, and log data, and generate signals. DAQami can be configured to log analog, digital, and counter channels, and to view that data in real-time or post-acquisition on user-configurable displays. Logged data can be exported for use in Excel® or MATLAB®. Windows OS DAQami is included with the free MCC DAQ Software bundle. An interactive installation, configuration, and test utility for...

E-TC Specifications E-TC Block Diagram Screw Terminal Screw Terminal Isolation Barrier Input Filters Input Filters +3.3 V Regulator Isolated Isolated Power Power Supply Supply Overvoltage/ Negative Supply Protection External Power Isolation Barrier Measurement sensitivity Thermocouple type J,K,T,E,N: 0.09 °C Thermocouple type R,S: 0.11 °C Thermocouple type B: 0.13 °C Measurement sensitivity is the smallest change in temperature that can be detected. Warm-up time: 20 minutes min Open thermocouple detect response time: 1 second CJC sensor accuracy (0 °C to 45 °C): ±0.20 °C typ, ±0.40 °C max...

Thermocouple measurement accuracy specifications include polynomial linearization, cold junction compensation, and system noise. The accuracy specifications assume the device is operated within its enclosure and has been warmed up for the recommended 20 minutes. Errors shown do not include inherent thermocouple error. Contact your thermocouple supplier for details on the actual thermocouple accuracy error. When thermocouples are attached to conductive surfaces, the voltage differential between multiple thermocouples must remain within ±1.8 V. For best results MCC recommends using...

E-TC Ordering LED displays and the Factory Reset button Alarm error modes Alarm on temperature reading only Alarm on temperature reading or open thermocouple error Alarm on open thermocouple error only Alarm output modes Disabled, digital I/O line may be used for normal operation Enabled, active high output (DIO line goes high when alarm condition is met) Enabled, active low output (DIO line goes low when alarm condition is met) Alarm latency: 1 second Alarm settings are applied when changed and at power-on. Temperatures are constantly converted on enabled channels and processed for alarm...