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Model DI-5B47R-09

Isolated 500-1750°C (932-3182°F) 5B-style Amplifier

$ 255 each
  • Interfaces to Type R Thermocouples
  • +500°C to +1750°C (+932°F to +3182°F) measurement range
  • Linearizes Thermocouple Signal
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1-1989 Transient Protection
  • Input Protected to 240VAC Continuous
  • 160dB CMR
  • 95dB NMR at 60Hz, 90dB at 50Hz
  • ±1µV/°C Drift
  • CSA Certified
  • View Dimensions and pinout
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DI-5B DAQ Amplifiers
This amplifier module measures +500°C to +1750°C (+932°F to +3182°F).This amplifier module interfaces with an R-type Thermocouple.This amplifier module has 4Hz bandwidth.This data acquisition system has a 30-day Money back guaranteeThis amplifier is manufactured in the United States of America


Each DI-5B47 thermocouple input module provides a single channel of thermocouple input which is filtered, isolated, amplified, linearized and converted to a high level analog voltage output (see block diagram). This voltage output is logic switch controlled, which allows these modules to share a common analog bus without the requirement of external multiplexers.

The DI-5B modules are designed with a completely isolated computer side circuit which can be floated to ±50V from Power Common, pin 16. This complete isolation means that no connection is required between I/O Common and Power Common for proper operation of the output switch. If desired, the output switch can be turned on continuously by simply connecting pin 22, the Read-Enable pin to I/O Common, pin 19. The DI-5B47 can interface to eight industry standard thermocouple types: J, K, T, E, R, S, N, and B. Its corresponding output signal operates over a 0 to +5V range. Each module is cold-junction compensated to correct for parasitic thermocouples formed by the thermocouple wire and screw terminals on the mounting hardware. Upscale open thermocouple detect is provided by an internal pull-up resistor. Downscale indication can be implemented by installing an external 47MΩ resistor, ±20% tolerance, between screw terminals 1 and 3.

Signal filtering is accomplished with a six-pole filter which provides 95dB of normal-mode-rejection at 60Hz and 90dB at 50Hz. Two poles of this filter are on the field side of the isolation barrier, and the other four are on the computer side.

After the initial field-side filtering, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%.

A special circuit in the input stage of the module provides protection against accidental connection of power-line voltages up to 240VAC.



16-Position Backplane

$ 409
16-channel backplane for 5B modules


16-channel backplane for 5B modules. Each module has its own analog bus. For use with DI-5B Modules.


1-Position Backplane

$ 55
Single-channel backplane for 5B modules


Single-channel backplane. For use with DI-5B Modules.


2-Position Backplane

$ 129
Dual-channel backplane for 5B modules


Dual-channel backplane. For use with DI-5B Modules.


8-Position Backplane

$ 305
Dual-channel backplane for 5B modules


8-position analog I/O backplane, non-multiplexed. For use with DI-5B Modules.


Base Element

$ 10
Base element with snap foot


Base element with snap foot required for use with models DI-5B03 and DI-5B04 Backplanes. For use with DI-5B Modules.


Power Supply

Power Supply


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


Side Element

$ 5
Side element


Side element required for use with models DI-5B03 and DI-5B04 Backplanes. For use with DI-5B Modules and Backplanes.


Input Range: +500ºC to +1750ºC (+932ºF to +3182ºF)
-0.1V to +0.5V
Thermocouple Type: R
Accuracy: ±1.30ºC
(Includes conformity, hysteresis, and repeatability. Does not include CJC accuracy.)
Input Bias Current: -25nA
Input Resistance: Normal: 50MΩ
Power Off: 40kΩ
Overload: 40kΩ
Input Protection: Continuous: 240Vrms max
Transient: ANSI/IEEE C37.90.1-1989
CMV, Input to Output: Continuous: 1500Vrms max
Transient: ANSI/IEEE C37.90.1-1989
CMR (50Hz or 60Hz): 160dB
NMR: 95dB at 60Hz, 90dB at 50Hz
Stability: Input Offset: ±1µV/°C*
Output Offset: ±20µV/°C
Gain: ±25ppm/°C
Noise: Input, 0.1 to 10Hz: 0.2µVrms
Output, 100kHz: 300µVp-p, 150µVrms
Bandwidth, -3dB: 4Hz
Response Time, 90% Span: 0.2s
Output Range: 0V to +5V
Output Resistance: 50Ω
Output Protection: Continuous Short to Ground
Output Selection Time
(to ±1mV of VOUT)
6µs at Cload = 0 to 2000pF
Output Current Limit: ±14mA max
Output Enable Control: Max Logic “0”: +0.8V
Min Logic “1”: +2.4V
Max Logic “1”: +36V
Input Current, “0”, “1”: 0.5µA
Open Input Response: Upscale
Open Input Detection Time: 10s
Cold Junction Compensation: Accuracy, 25°C: ±0.25°C
Accuracy, +5°C to +45°C: ±0.5°C
Accuracy, -40°C to +85°C: ±1.25°C
Power Supply Voltage: +5VDC ±5%
Power Supply Current: 30mA
Power Supply Sensitivity: ±2µV/% RTI
(RTI-Referenced to Input)
Environmental: Operating Temperature: -40ºC to +85ºC
Storage Temperature: -40ºC to +85ºC
Relative Humidity: 0 to 95% Noncondensing
RFI Susceptibility: ±0.5% Span Error at 400MHz, 5W, 3ft
Mechanical Dimensions: 2.28" × 2.26" × 0.60"
(58mm × 57mm × 15mm)

*This is equivalent to °C as follows: Type J = 0.020°C/°C, Types K & T = 0.025°C/°C, Type E = 0.016°C/°C, Types R & S = 0.168°C/°C, Type N = 0.037°C/°C, Type C = 0.072°C/°C.

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