Site Search:

Model DI-8B34-01

Isolated -100°C to +100°C (-148°F to +212°F) RTD 8B-style Amplifier

$132.00 each
In
Stock
  • -100°C to +100°C (-148°F to +212°F) input range
  • Interfaces to 100Ω Platinum 2- or 3-wire RTDs
  • Linearizes RTD Signal
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1 Transient Protection
  • Input Protected to 240VAC Continuous
  • 120dB CMR
  • 70dB NMR at 60Hz
  • Low Drift with Ambient Temperature
  • CSA, FM and CE Certifications Pending
  • Mix and Match Modules
  • View Dimensions and pinout
Tweet this page Like this product on Facebook Share this page on LinkedIn Email this page
DI-8B DAQ Amplifiers
This amplifier module measures -100°C to +100°C (-148°F to +212°F).This amplifier module supports 100Ω Pt RTDs.This amplifier module has 3Hz bandwidth.This data acquisition system has a 30-day Money back guaranteeThis amplifier is manufactured in the United States of America

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-8B34 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 two matched current sources. When using a 3-wire connection, this method allows equal currents to flow through the sensor leads, cancelling the effects of lead resistances. The exciation currents are small (0.25mA) which minimizes the 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-8B34 module provides protection against accidental connection of power-line voltages up to 240VAC. Clamp circuits on the I/O and power terminals protect against harmful transients.

The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise.

Accessories

8BP02

2-Position Backplane

$83.00
8BP02

Description

2-position analog I/O backplane, non-multiplexed. For use with DI-8B Modules. View the 8BP02 schematic or the 8BPxx schematic or download the pdf.

8BP04

4-Position Backplane

$134.00
8BP04

Description

4 channel backplane. Each module has its own analog bus. For use with DI-8B Modules. View the 8BP04 schematic or the 8BPxx schematic or download the pdf.

8BP08

8-Position Backplane

$199.00
8BP08

Description

8 channel backplane. Each module has its own analog bus. For use with DI-8B Modules. View the 8BP08 schematic or the 8BPxx schematic or download the pdf.

8BP16

16-Position Backplane

$309.00
8BP16

Description

16 channel backplane. Each module has its own analog bus. For use with DI-8B Modules. View the 8BP16 schematic or the 8BPxx schematic or download the pdf.

DI-5B-PS

Power Supply

$65.00
Power Supply

Description

5V DC Power Supply for use with both DI-5B and DI-8B Backplanes.

Specifications

Input Range: -100°C to +100°C (-148°F to +212°F)
Input Resistance: Normal: 50MΩ
Power Off: 200kΩ
Overload: 200kΩ
Input Protection: Continuous: 240VAC
(240VAC between + and - -/+EXC/-EXC terminals.
120VAC between - and +EXC/- EXC terminals and between +EXC and -EXC terminals.)
Transient: ANSI/IEEE C37.90.1
Sensor Excitation Current: 0.25mA
Lead Resistance Effect: ±0.02˚C/Ω
(Ω refers to the resistance in one lead)
CMV, Input to Output: 1500Vrms max
Transient, Input to Output: ANSI/IEEE C37.90.1
CMR (50Hz or 60Hz): 120dB
NMR: 70dB at 60Hz
Accuracy: ±0.20°C
(Includes conformity, hysteresis, and repeatability.)
Stability: Output Offset: ±20ppm/ºC
Gain: ±50ppm/ºC
Noise: Output, 100kHz: 200µVrms
Bandwidth, -3dB: 3Hz
Response Time, 90% Span: 150ms
Output Range: 0 to +5V
Output Protection: Transient: Continuous Short to Ground
ANSI/IEEE C37.90.1
Power Supply Voltage: +5VDC ±5%
Power Supply Current: 25mA
Power Supply Sensitivity: ±25ppm/%
Mechanical Dimensions: 1.11" × 1.65" × 0.40"
(28.1mm × 41.9mm × 10.2mm)
Operating Temperature: -40ºC to +85ºC
Storage Temperature: -40ºC to +85ºC
Relative Humidity: 0 to 95% Noncondensing
RTD Standards: Type: 100Ω Pt
Alpha Coefficient: 0.00385

Compatible Products