Datasheet > DI-8B35-04

DI-8B35-04

更新时间： 2024-11-25 06:53:11

品牌	Logo	应用领域
其他 - ETC		/
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描述
Linearized 4-Wire RTD Input Modules

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DI-8B35-04 数据手册

DI-8B35 Linearized 4-Wire RTD Input Modules

FEATURES

SPECIFICATIONS

Typical at T = +25ºC and +5V Power

• Interfaces to 100Ω Platinum RTDs

DI-8B35

• Linearizes RTD Signal

Input Range Limits

Input Resistance

-200˚C to +850˚C (100Ω Pt)

• High Level Voltage Outputs

• 1500Vrms Transformer Isolation

Normal

Power Off

Overload

50MΩ

200kΩ

• ANSI/IEEE C37.90.1 Transient Pro-

tection

Input Protection

• Input Protected to 240VAC Continu-

ous

Continuous¹

Transient

240VAC

ANSI/IEEE C37.90.1

• 120dB CMR

Sensor Excitation Current

Lead Resistance Effect

CMV, Input to Output

Transient, Input to Output

CMR (50Hz or 60Hz)

NMR

0.25mA

±0.001˚C/Ω²

• 70dB NMR at 60Hz

• Low Drift with Ambient Temperature

1500Vrms max

ANSI/IEEE C37.90.1

120dB

• CSA, FM and CE Certifications

Pending

• Mix and Match Module Types

70dB at 60Hz

Accuracy³

DI-8B35-01

DI-8B35-02

DI-8B35-03

DI-8B35-04

±0.20˚C

±0.15˚C

±0.20˚C

±0.45˚C

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.

Stability

Output Offset

Gain

±20ppm/ºC

±50ppm/ºC

Noise

Output, 100kHz

250µVrms

3Hz

Bandwidth, -3dB

Response Time, 90% Span

Output Range

150ms

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.

0 to +5V

Output Protection

Continuous Short to Ground

ANSI/IEEE C37.90.1

Transient

Power Supply Voltage

Power Supply Current

Power Supply Sensitivity

Mechanical Dimensions

+5VDC ±5%

30mA

±25ppm/%

1.11" × 1.65" × 0.40"

(28.1mm × 41.9mm × 10.2mm)

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.

Environmental

Operating Temperature

Storage Temperature

Relative Humidity

-40ºC to +85ºC

0 to 95% Noncondensing

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

EXC terminals and between +EXC and -EXC terminals.

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.

²Ω refers to the resistance in one lead.

³Includes conformity, hysteresis and repeatability.

The modules are designed for installation

in Class I, Division 2 hazardous locations

and have a high level of immunity to envi-

ronmental noise.

DATAQ Instruments, Inc.

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

中文翻译

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