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National Instruments SCC-TC01 manual

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Table of contents for the manual

  • Page 1

    USER GUIDE SCC-TC Series Thermocouple Input Modules The SCC-TC Series thermocouple input modules, SC C-TC01 and SCC-TC02, accept input signals from B-, E-, J-, K-, N-, R-, S-, and T-type thermocouples. Each module contains thermistor circ uitry po wer ed by 2.5 V , to compensate for cold-junc tion ef fects and can detect open thermocouple circuits.[...]

  • Page 2

    SCC-TC Series Thermocouple Input Modules User Guide 2 ni.com bold Bold text denotes items that you must select in the software, such as menu items and dialog box options. Bold text also denotes parameter nam es. italic Italic text denotes variables, emphasis , a cross-reference, or an introduction to a key concept. Italic te xt also deno tes text t[...]

  • Page 3

    © National Instruments Corpor ation 3 SCC-TC Series Th ermocouple Input Mo dules User Guide ❑ Documentation – One of the following: • SC-2345/2350 User Manual • SCC-68 User Guide – SCC-TC Series Thermocouple Input Modules User Guide – Read Me First: Safety and Radio-Frequency Interference – SCC Quick Start Guide ❑ T o ols – 1/8 i[...]

  • Page 4

    SCC-TC Series Thermocouple Input Modules User Guide 4 ni.com the inputs of the second-stage SCC. An example of dual-stage condit ioning in an SCC-TC0 X followed by an SCC-LP01 lowpass filter module. Sockets J9 to J16 also are av ailable for digital input/output (DIO) conditioning or control . Refer to the SC-2345/2350 User Manual for more informati[...]

  • Page 5

    © National Instruments Corpor ation 5 SCC-TC Series Th ermocouple Input Mo dules User Guide Figure 1. SCC-TC0 X Signal Connections For more information about h ow to conf igure the SCC-TC0 X module usin g NI-D A Qmx, refer to the SCC Quick Start Guid e. Using the TC0 X Scaling V oltage Measurements Note NI-D A Qmx includes thermocouple and therm i[...]

  • Page 6

    SCC-TC Series Thermocouple Input Modules User Guide 6 ni.com temperature measurements. T o make this con version, complete the following steps: 1. Measure the thermocouple v oltage. a. Read the thermocouple channe l on the E/M Series D A Q device V ESERIES [CH( X )]. b . Calculate the thermocoup le voltage b y using the following formula: where V T[...]

  • Page 7

    © National Instruments Corpor ation 7 SCC-TC Series Th ermocouple Input Mo dules User Guide Detecting Open Thermocouples The SCC-TC0 X contains a 10 M Ω pul l-up resistor that connects to + 5 V to detect open thermocouples. To determine if you have an open thermocouple, check whether the co rresponding E/M Series DA Q device channel is saturated.[...]

  • Page 8

    SCC-TC Series Thermocouple Input Modules User Guide 8 ni.com Cold-Junction Sensor The cold-junction sensor vol tage output varies from 1.91 to 0.58 V over a 0 to 55 ° C temperature range. Note NI-D A Qmx includes thermist or conv ersion utilities that implement the equations listed below . Refer to your soft ware documentation for more informatio [...]

  • Page 9

    © National Instruments Corpor ation 9 SCC-TC Series Th ermocouple Input Mo dules User Guide Calibrating System Offsets To calibrate the offset voltage of the SCC-TC0 X in the system using the E/M Series DAQ device, complete th e following steps. The E/M Series DAQ device must be powered for 30 minutes before you calibrate the offset voltage. 1. Se[...]

  • Page 10

    SCC-TC Series Thermocouple Input Modules User Guide 10 ni.com Specifications These specifications are typical at 25 °C unless otherwise stated. Analog Input Number of input channels.......................1 DIFF Input signals ..................... .............. .........Thermocouples of types B, E, J, K, N, R, S, and T Input signal rang e ... ....[...]

  • Page 11

    © National Instruments Corpor ation 11 SCC-TC Series Thermocouple Input Modules U ser Guide Measurement Accuracy 1 1 T otal system measurement error fo r operating temper ature within ± 5 ° C of calibration temperature. Incl udes PCI/A T-MIO- 16XE-50 one-year accuracy specification of 0.01% ± 412 μ V . SCC-TC01/02 accuracy specification of 0.0[...]

  • Page 12

    SCC-TC Series Thermocouple Input Modules User Guide 12 ni.com Cold-Junction Sensor Cold-junction sensor accuracy .......... ......± 0.4 ° C max from 15 to 35 ° C, ± 0.75 ° C max from 0 to 15 ° C and 35 to 55 ° C Output ............. .............. .............. ............1.91 V (0 ° C) to 0.58 V (55 ° C) Note The accuracy specif ication[...]

  • Page 13

    © National Instruments Corpor ation 13 SCC-TC Series Thermocouple Input Modules U ser Guide Figure 3. SCC-TC02 Dimensions Weight TC-01 ................. ........... .............. .... 25 g (0.9 oz) TC-02 ................. ........... .............. .... 22 g (0.8 oz) Screw terminal wire gauge ................. .... 24 to 12 AWG I/O ............ .[...]

  • Page 14

    SCC-TC Series Thermocouple Input Modules User Guide 14 ni.com Environmental Operating temperature ................ ............0 to 50 °C Storage temperature ............ .............. ......–20 to 70 °C Humidity ............ .............. .............. .........10 to 90% RH, noncondensing Maximum altitude ............... .............. ....[...]

  • Page 15

    © National Instruments Corpor ation 15 SCC-TC Series Thermocouple Input Modules U ser Guide CE Compliance This product meets the essential re quirements of applicable European Directives, as amended fo r CE marking, as follows: • 73/23/EEC; Lo w-V oltage Directi ve (safety) • 89/336/EEC; Electromag netic Compatibility Directive (EMC) Note Refe[...]

  • Page 16

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