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DI-8B Series Amplifiers

DI-8B amplifiers offer the convenience to mix and match modules based upon measurement function and range to meet any application requirement, from the most simple to the most complex. Each amplifier in the DI-8B line provides input-to-output isolation, and since one module is deployed per measured channel, channel-to-channel isolation is also guaranteed. Isolation extends measurements into application areas that non-isolated products cannot address. Examples are current measurements using shunts, grounded or powered thermocouples, and the elimination of noise caused by ground loops.

Use this page to screen isolated DI-8B amplifiers by measurement type.

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Measurement Type

AC/DC voltage (millivolt)
AC/DC voltage (volts)
4-20 mA process current
Thermocouple
RTD (2-,3-,4-wire)
AC True RMS voltage
Strain gauge-based sensor
Frequency (RPM)
Potentiometer (string pot)
AC/DC voltage with excitation

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Model Measurement Type Measurement Range Bandwidth Description Price
DI-8B40-01 AC/DC Millivolt ±10 mV 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B40-02 AC/DC Millivolt ±50 mV 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B40-03 AC/DC Millivolt ±100 mV 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B41-01 AC/DC Volts ±1 V 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B41-02 AC/DC Volts ±5 V 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B41-03 AC/DC Volts ±10 V 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B41-07 AC/DC Volts ±20 V 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B41-09 AC/DC Volts ±40 V 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B41-12 AC/DC Volts ±60 V 1 kHz Passes DC to 1 kHz signals; Isolation supports off-ground measurements $122
DI-8B32-01 Process Current 4-20 mA 3 Hz Passes DC to 3 Hz signals; Isolation supports off-ground measurements $122
DI-8B32-02 Process Current 0-20 mA 3 Hz Passes DC to 3 Hz signals; Isolation supports off-ground measurements $122
DI-8B42-01 Process Current with Excitation 4-20 mA 100 Hz Built-in 12 V dc power supply; Supports 2-wire sensors $148
DI-8B47J-01 J-type Thermocouples 0°C (32°F) to 760°C (1400°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47J-02 J-type Thermocouples -100°C (-148°F) to 300°C (572°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47J-03 J-type Thermocouples 0°C (32°F) to 500°C (932°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47K-04 K-type Thermocouples 0°C (32°F) to 1000°C (1832°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47K-05 K-type Thermocouples 0°C (32°F) to 500°C (932°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47T-06 T-type Thermocouples -100°C (-148°F) to 400°C (752°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47T-07 T-type Thermocouples 0°C (32°F) to 200°C (392°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47J-12 J-type Thermocouples -100°C (-148°F) to 760°C (1400°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47K-13 K-type Thermocouples -100°C (-148°F) to 1350°C (2462°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B47K-14 K-type Thermocouples 0°C (32°F) to 1200°C (2192°F) 3 Hz Passes DC to 3 Hz signals $139
DI-8B34-01 2- or 3-wire PT100 RTD -100°C (-148°F) to 100°C (212°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B34-02 2- or 3-wire PT100 RTD 0°C (32°F) to 100°C (212°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B34-03 2- or 3-wire PT100 RTD 0°C (32°F) to 200°C (392°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B34-04 2- or 3-wire PT100 RTD 0°C (32°F) to 600°C (1112°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B35-01 4-wire PT100 RTD -100°C (-148°F) to 100°C (212°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B35-02 4-wire PT100 RTD 0°C (32°F) to 100°C (212°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B35-03 4-wire PT100 RTD 0°C (32°F) to 200°C (392°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B35-04 4-wire PT100 RTD 0°C (32°F) to 600°C (1112°F) 3 Hz Passes DC to 3 Hz signals; Built-in RTD excitation $139
DI-8B33-01 AC True RMS 0-100 mV rms 45 Hz to 10 kHz Passes 45 Hz to 10 kHz signals; Isolation supports off-ground measurements $208
DI-8B33-02 AC True RMS 0 to 1 V rms 45 Hz to 10 kHz Passes 45 Hz to 10 kHz signals; Isolation supports off-ground measurements $208
DI-8B33-03 AC True RMS 0 to 10 V rms 45 Hz to 10 kHz Passes 45 Hz to 10 kHz signals; Isolation supports off-ground measurements $208
DI-8B33-04 AC True RMS 0 to 150 V rms 45 Hz to 10 kHz Passes 45 Hz to 10 kHz signals; Isolation supports off-ground measurements $208
DI-8B38-01 Strain Gauge-based Sensor ±10 mV 8 kHz 100Ω to 2kΩ bridge resistance; 3.33 V excitation output $156
DI-8B38-02 Strain Gauge-based Sensor ±30 mV 8 kHz 300 Ω to 2kΩ bridge resistance; 10 V excitation output $156
DI-8B38-05 Strain Gauge-based Sensor ±20 mV 8 kHz 300 Ω to 2kΩ bridge resistance; 10 V excitation output $156
DI-8B38-31 Strain Gauge-based Sensor ±10 mV 3 Hz 100 Ω to 2kΩ bridge resistance; 3.33 V excitation output $156
DI-8B38-32 Strain Gauge-based Sensor ±30 mV 3 Hz 300 Ω to 2kΩ bridge resistance; 10 V excitation output $156
DI-8B38-35 Strain Gauge-based Sensor ±20 mV 3 Hz 300 Ω to 2kΩ bridge resistance; 10 V excitation output $156
DI-8B45-01 Frequency (RPM) 10 to 500 Hz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-02 Frequency (RPM) 20 Hz to 1 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-03 Frequency (RPM) 200 Hz to 2.5 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-04 Frequency (RPM) 100 Hz to 5 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-05 Frequency (RPM) 200 Hz to 10 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-06 Frequency (RPM) 500 Hz to 25 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-07 Frequency (RPM) 1 to 50 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B45-08 Frequency (RPM) 2 to 100 kHz 3 Hz Pulse or zero-crossing input; 5-V excitation output $139
DI-8B36-01 String Pot, Potentiometer 0 to 100 Ω 3 Hz Supports 2- and 3-wire sensors; Constant-current excitation output $139
DI-8B36-02 String Pot, Potentiometer 0 to 500 Ω 3 Hz Supports 2- and 3-wire sensors; Constant-current excitation output $139
DI-8B36-03 String Pot, Potentiometer 0 to 1k Ω 3 Hz Supports 2- and 3-wire sensors; Constant-current excitation output $139
DI-8B36-04 String Pot, Potentiometer 0 to 10k Ω 3 Hz Supports 2- and 3-wire sensors; Constant-current excitation output $139
DI-8B43-01 Voltage In with Excitation ±1 V 1 kHz 10 V excitation output; For dc LVDTs and other sensors $148
DI-8B43-02 Voltage In with Excitation ±2 V 1 kHz 10 V excitation output; For dc LVDTs and other sensors $148
DI-8B43-03 Voltage In with Excitation ±3 V 1 kHz 10 V excitation output; For dc LVDTs and other sensors $148
DI-8B43-04 Voltage In with Excitation ±4 V 1 kHz 10 V excitation output; For dc LVDTs and other sensors $148
DI-8B43-05 Voltage In with Excitation ±5 V 1 kHz 10 V excitation output; For dc LVDTs and other sensors $148
DI-8B50-01 AC/DC Millivolt ±10 mV 20 kHz Passes DC to 20 kHz signals $148
DI-8B50-02 AC/DC Millivolt ±50 mV 20 kHz Passes DC to 20 kHz signals $148
DI-8B50-03 AC/DC Millivolt ±100 mV 20 kHz Passes DC to 20 kHz signals $148
DI-8B51-01 AC/DC Volts ±1 V 20 kHz Passes DC to 20 kHz signals $148
DI-8B51-02 AC/DC Volts ±5 V 20 kHz Passes DC to 20 kHz signals $148
DI-8B51-03 AC/DC Volts ±10 V 20 kHz Passes DC to 20 kHz signals $148
DI-8B51-07 AC/DC Volts ±20 V 20 kHz Passes DC to 20 kHz signals $148
DI-8B51-09 AC/DC Volts ±40 V 20 kHz Passes DC to 20 kHz signals $148
DI-8B51-12 AC/DC Volts ±60 V 20 kHz Passes DC to 20 kHz signals $148