DI-8B35-01 datasheet, PDF - EEWORLD Datasheet

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DI-8B35-01: DescriptionLinearized 4-Wire RTD Input Modules; File Size298KB，2 Pages; ManufacturerETC

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DI-8B35-01 Overview

Linearized 4-Wire RTD Input Modules

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DI-8B35 Linearized 4-Wire RTD Input Modules

FEATURES

• Interfaces to 100Ω Platinum RTDs

• Linearizes RTD Signal

• High Level Voltage Outputs

• 1500Vrms Transformer Isolation

• ANSI/IEEE C37.90.1 Transient Pro-

tection

• Input Protected to 240VAC Continu-

ous

• 120dB CMR

• 70dB NMR at 60Hz

• Low Drift with Ambient Temperature

• CSA, FM and CE Certifications

Pending

• Mix and Match Module Types

SPECIFICATIONS

Input Range Limits

Input Resistance

Typical at T

= +25ºC and +5V Power

DI-8B35

-200˚C to +850˚C (100Ω Pt)

Normal

Power Off

Overload

Continuous¹

Transient

50MΩ

200kΩ

240VAC

ANSI/IEEE C37.90.1

0.25mA

±0.001˚C/Ω²

1500Vrms max

ANSI/IEEE C37.90.1

120dB

70dB at 60Hz

±0.20˚C

±0.15˚C

±0.20˚C

±0.45˚C

±20ppm/ºC

±50ppm/ºC

250µVrms

3Hz

150ms

0 to +5V

Continuous Short to Ground

ANSI/IEEE C37.90.1

+5VDC ±5%

30mA

±25ppm/%

1.11" × 1.65" × 0.40"

(28.1mm × 41.9mm × 10.2mm)

Input Protection

Sensor Excitation Current

Lead Resistance Effect

CMV, Input to Output

Transient, Input to Output

CMR (50Hz or 60Hz)

NMR

Accuracy³

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-8B35 module

isolates, filters, amplifies, and linearizes a

single channel of temperature input from

an RTD and provides an analog voltage

output.

RTD excitation is provided from the

module using a precision current source.

Excitation current does not flow in the

input signal leads, which allows RTD mea-

surements to be made independent of lead

resistance. The exciation currents are small

(0.25mA) which minimizes self-heating of

the RTD.

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-8B35

module provides protection against ac-

cidental connection of power-line voltages

up to 240VAC. Clamp circuits on the I/O

and power terminals protect against harm-

ful transients.

The modules are designed for installation

in Class I, Division 2 hazardous locations

and have a high level of immunity to envi-

ronmental noise.

DI-8B35-01

DI-8B35-02

DI-8B35-03

DI-8B35-04

Stability

Noise

Output Offset

Gain

Output, 100kHz

Bandwidth, -3dB

Response Time, 90% Span

Output Range

Output Protection

Power Supply Voltage

Power Supply Current

Power Supply Sensitivity

Mechanical Dimensions

Environmental

Transient

Operating Temperature

-40ºC to +85ºC

Storage Temperature

-40ºC to +85ºC

Relative Humidity

0 to 95% Noncondensing

¹240VAC between + and - -/+EXC/-EXC terminals. 120VAC between - and +EXC/-

EXC terminals and between +EXC and -EXC terminals.

²Ω refers to the resistance in one lead.

³Includes conformity, hysteresis and repeatability.

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

DI-8B35-01 Related Products

	DI-8B35-01	DI-8B35	DI-8B35-02	DI-8B35-03	DI-8B35-04
Description	Linearized 4-Wire RTD Input Modules	Linearized 4-Wire RTD Input Modules	Linearized 4-Wire RTD Input Modules	Linearized 4-Wire RTD Input Modules	Linearized 4-Wire RTD Input Modules

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