Datasheet > 777459-34

777459-34

更新时间： 2022-12-24 18:46:54

品牌	Logo	应用领域
美国国家仪器公司 - NI		/
页数	文件大小	规格书
17页	4120K
描述
SCC Configuration Guide

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777459-34 数据手册

Portable, Modular Signal Conditioning Modules

NI SCC-TC Series Thermocouple Input

Specifications

SCC-TC Series

Typical for 25 °C unless otherwise noted.

Input Characteristics

Number of channels............................ 1 differential

Input signals........................................ Thermocouples of type J, K, T, B,

E, N, R, and S, ±100 mV

Input signal gain ................................. 100

Maximum input working voltage........ ±12 V of chassis ground

Overvoltage protection

to DAQ device................................. ±42 V_pk(powered on or off)

Nonlinearity......................................... ±0.004ꢀ maximum

Gain error ............................................ ±0.08ꢀ of reading, maximum

Input impedance

Normal powered on........................ 10 MΩ

Powered off or overload................. 10 kΩ

Open thermocouple detection current 250 nA maximum

Common-mode rejection ratio............ 110 dB minimum

Bandwidth........................................... 2 Hz, dual-pole RC filter

Offset error.......................................... 5 µV_rms, referred to input

Stability

Offset temperature coefficient....... ±0.± µV/°C maximum

Gain temperature coefficient ......... ±0.0005ꢀ/°C

Cold-junction sensor (thermistor)

Model

SCC-TC01

SCC-TC02

Channel

Description

Thermocouple, spade connector

Thermocouple, screw terminals

Part Number

777459-03

777459-04

The National Instruments SCC-TC01 and SCC-TC02 are single-input

modules for conditioning signals from a variety of thermocouple types,

including J, K, T, B, E, N, R, and S, and millivolt inputs with a range of

±100 mV. The NI SCC-TC modules include a 2 Hz lowpass filter, an

instrumentation amplifier with a gain of 100, and buffered outputs for

maximum scanning rates by the multifunction DAQ device. The input

circuitry of the SCC-TC modules also includes high-impedance bias

resistors for open-thermocouple detection as well as handling both

floating and ground-referenced thermocouples. The SCC-TC modules

include an onboard thermistor for cold-junction compensation.

Two versions of the SCC-TC are available. The SCC-TC01 includes a

2-prong uncompensated thermocouple jack that accepts any miniature or

subminiature 2-prong male thermocouple plug. The SCC-TC02 includes a

removable screw-terminal plug that features an additional connection for

grounding thermocouple shields.

Output ............................................. 1.91 V (at 0 °C) to 0.58 V

(at 55 °C)

Accuracy (15 to 35 °C).................... ±0.4 °C maximum

Power Requirements

Analog................................................. ±0 mW

BUY ONLINE at ni.com or CALL 800 813 3693 (U.S.)

1 2 345 6 7...17

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