High-Speed 8-Channel Thermocouple Interface Card

The TCIC Series comprises low-cost, high-speed thermocouple temperature measurement data acquisition cards with USB interface. TCIC cards use an 8-channel, high-resolution A/D converter with on-board noise filters. On-board cold junction compensation and temperature conversion enable standalone operation. The card also has 8 opto-isolated outputs that can be activated based on individually programmable high/low limit setpoints for each thermocouple channel.

Each TCIC card is supplied with Windows software that displays temperature data in digital meter, analog meter, or strip chart format. Data for all 8 channels can be logged to an Excel-compatible file. A LabVIEW demonstration vi and complete programming examples in .NET are also included.

Specifications
Inputs: 8
Input Types: Each of the 8 inputs can be configured to measure ±500 mV or type J, K, T, E, R, or S thermocouple
Millivolt Accuracy: ±0.05% uncalibrated; gain drift 5 ppm/°C typical, 10 ppm/°C max
Outputs: 8 opto-isolated MOSFET outputs controlled based on individual channel high/low temperature setpoints; outputs can be programmed to operate in automatic, latching or manual modes. External 10 to 30 Vdc power supply required, 0.25 A max per output. Each output has an indicating LED.
Communications Interface: USB standard, RS-232/RS-485 optional
Sampling Rate: 400 Hz total throughput (50 Hz/channel)
Power: USB (from computer); RS-232/RS-485 (from included AC adaptor)
Enclosure Material: ABS plastic
Dimensions: 100 W x 160 mm L (3.94 x 6.30")

Thermocouple Input Types and Ranges Table

Input Type	Range	Accuracy* (°C)	Resolution (°C)
J	-200 to 1200°C (-328 to 2192°F)	±1.5	0.019
K	-200 to 1372°C (-328 to 2501°F)	±1.5	0.024
T	-200 to 400°C (-328 to 752°F)	±1.5	0.022
E	-200 to 1000°C (-328 to 1832°F)	±1.5	0.015
R	-50 to 1768°C (-58 to 3214°F)	±2.0	0.125
S	-50 to 1768°C (-58 to 3214°F)	±2.0	0.143

*Total accuracy, including CJC error.