Measurement-computing DaqBook 2000 Series Manual do Utilizador descarregar pdf (Página 81)

Specifications are subject to change without notice.

DaqBook/2000 and DaqOEM/2000 Series

898695 Specifications 11-3

Thermocouple Input Specifications for DaqBook/2020 Mini-TC Connectors

TC/mV Connectors: 14 Mini-TC connectors, oriented in 2 rows of 7

Inputs: 14 differential T

C/mV inputs, open TC detection per channel

TC Types: J, K, T, E, S, R, B, N28, N14; x100 voltage

Input Impedance: 40 MΩ (differential); 20 MΩ (single-ended)

Input Voltage Range: ± 100 mV

Input Bandwidth: 4 kHz

Input Bias Current: 10 nA (ty

CMRR: -100 db (typ)

Maximum Working Voltage (Signal + Common Mode): ±10V

Over-Voltage Protection: ±40V

Voltage Accuracy: ±(0.2% of the reading +

50 µV)

Temperature Coefficient for Voltage Accuracy: 10ppm for every ˚C outside the range of 0° to 50°C

TC Accuracy: Valid for one year, 18° to 28°C, see the following table.

Temperature Coefficient for Type T: ±0.03°C per °C ambient outside the range of 18 to 28˚

Minimum Resolution: 0.1˚C for all TC types

TC Accuracy

at Measurement Temperature in °C (±°C)

Type Min Max -100 0 100 300 500 700 900 1100 1400

-200 760 0.8 0.7 0.7 0.8 0.9 0.9 — — —

-200 1200 0.9 0.8 0.8 0.9 1.1 1.1 1.2 1.3 —

-200 400 0.9 0.8 0.8 0.8 — — — — —

-270 650 0.8 0.7 0.7 0.7 0.8 — — — —

-50 1768 — 3.1 2.4 2.0 2.0 1.9 2.0 2.1 2.1

-50 1768 — 3.1 2.1 2.0 1.9 1.9 1.7 1.9 2.0

50 1780 — — — 4.9 3.2 2.8 2.4 2.3 2.0

N28

-270 400 1.2 0.9 0.9 0.9 — — — — —

N14

0 1300 — 0.9 0.9 0.9 1.1 1.1 1.2 1.3 —

Accuracy conditions:

• Exclusive of thermocouple errors

• Exclusive of noise

• V

= 0

1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 89 90

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Measurement-computing DaqBook 2000 Series Manual do Utilizador Página 81