DI-8B47K-05 datasheet, PDF - EEWORLD Datasheet

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DI-8B47K-05: DescriptionLinearized Thermocouple Input Modules; File Size320KB，2 Pages; ManufacturerETC1

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DI-8B47K-05 Overview

Linearized Thermocouple Input Modules

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DI-8B47 Linearized Thermocouple Input Modules

FEATURES

• Interfaces to Types J, K and T

• Linearizes Thermocouple Signal

• High Level Voltage Outputs

• 1500Vrms Transformer Isolation

• ANSI/IEEE C37.90.1

• Input Protected to 240VAC Continu-

ous

• 120dB CMR

• 70dB NMR at 60Hz

• Low Drift with Ambient Temperature

• Accurate CJC -40°C to +85°C

• CSA, FM, and CE Certifications

Pending

• Mix and Match Module Types

SPECIFICATIONS

Input Range

Input Bias Current

Input Resistance

Typical at T

= +25ºC and +5V Power

DI-8B47

-0.1V to +0.5V

-25nA

Normal

Power Off

Overload

Continuous

Transient

50MΩ

450kΩ

240VAC

ANSI/IEEE C37.90.1

0.25mA

±0.02˚C/Ω¹

1500Vrms max

ANSI/IEEE C37.90.1

120dB

70dB at 60Hz

See Ordering Information on Page 2

±20ppm/ºC

±75ppm/ºC

250µVrms

3Hz

150ms

0 to +5V

Continuous Short to Ground

ANSI/IEEE C37.90.1

±0.5ºC

±1.5ºC

+5VDC ±5%

30mA

±25ppm/%

1.11" × 1.65" × 0.40"

(28.1mm × 41.9mm × 10.2mm)

-40ºC to +85ºC

0 to 95% Noncondensing

Input Protection

Sensor Excitation Current

Lead Resistance Effect

CMV, Input to Output

Transient, Input to Output

CMR (50Hz or 60Hz)

NMR

Accuracy

Stability

Noise

DESCRIPTION

DI-8B modules are an optimal solution

for monitoring real-world process signals

and providing high level signals to a data

acquisition system. Each DI-8B47 module

isolates, ﬁlters, ampliﬁes, and linearizes a

single channel of temperature input from

a thermocouple and provides an analog

voltage output.

Linearization is accomplished using a four

breakpoint piecewise linear approximation.

The DI-8B47 can interface to industry

standard thermocouple type J, K, and T and

has an output signal of 0V to +5V. Each

module is cold-junction compensated to

correct for parasitic thermocouples formed

by the thermocouple wire and screw termi-

nals on the mounting backpanel. Upscale

open thermocouple detect is provided by

an internal pull-up resistor.

Signal ﬁltering is accomplished with a

three-pole ﬁlter optimized for time and

frequency response which provides 70dB

of normal-mode-rejection at 60Hz. One

pole of this ﬁlter is on the ﬁeld side of the

isolation barrier for anti-aliasing, and the

other two are on the system side.

A special input circuit on the DI-8B47

module provides protection against ac-

cidental connection of power-line voltages

up to 240VAC.

The modules are designed for installation

in Class I, Division 2 hazardous locations

and have a high level of immunity to envi-

ronmental noise.

Offset

Gain

Output, 100kHz

Bandwidth, -3dB

Response Time, 90% Span

Output Range

Output Protection

Transient

Cold Junction Compensation

Accuracy, 25ºC

Accuracy, -40ºC to +85ºC

Power Supply Voltage

Power Supply Current

Power Supply Sensitivity

Mechanical Dimensions

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

DATAQ Instruments, Inc. • 241 Springside Drive • Akron, Ohio 44333 • Tel: 330-668-1444 • Email: support@dataq.com • www.dataq.com

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