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- Thermocouple Input Compatibility: Designed for Type K thermocouples, covering a wide temperature range from –100°C to +1350°C.
- Signal Conditioning: Converts low-level thermocouple signals into a high-level, noise-resistant 0–5 V output suitable for analog-to-digital converters (ADCs) or data acquisition systems.
- Non-linearized Output: Provides a direct, uncorrected voltage output proportional to the thermocouple’s natural response curve, allowing external linearization or software compensation.
- High Electrical Isolation: Incorporates 1500 V rms galvanic isolation between input, output, and power, protecting measurement systems from ground loops and high common-mode voltages.
- Compact Modular Design: Standard 5B Series form factor for easy installation into backplanes or DIN-rail carriers.
- High Accuracy and Stability: Precision amplification and filtering ensure low noise and minimal drift over time and temperature.
- Wide Operating Range: Suitable for harsh industrial environments with extended temperature and humidity tolerance.
- Plug-and-Play Integration: Compatible with 5B Series backplanes, providing standardized power and signal connections.
- Rugged Construction: Encapsulated module design for mechanical protection and electrical shielding.
- Signal Conditioning: Converts low-level thermocouple signals into a high-level, noise-resistant 0–5 V output suitable for analog-to-digital converters (ADCs) or data acquisition systems.
- Non-linearized Output: Provides a direct, uncorrected voltage output proportional to the thermocouple’s natural response curve, allowing external linearization or software compensation.
- High Electrical Isolation: Incorporates 1500 V rms galvanic isolation between input, output, and power, protecting measurement systems from ground loops and high common-mode voltages.
- Compact Modular Design: Standard 5B Series form factor for easy installation into backplanes or DIN-rail carriers.
- High Accuracy and Stability: Precision amplification and filtering ensure low noise and minimal drift over time and temperature.
- Wide Operating Range: Suitable for harsh industrial environments with extended temperature and humidity tolerance.
- Plug-and-Play Integration: Compatible with 5B Series backplanes, providing standardized power and signal connections.
- Rugged Construction: Encapsulated module design for mechanical protection and electrical shielding.
1. Product Overview
Name: 5B37-K02 Thermocouple Input Module
Model: 5B37-K02
Series: 5B Series Analog Signal Conditioning Modules
Article Number: 5B37-K02
Manufacturer: Analog Devices (5B Series family)
The 5B37-K02 is a precision thermocouple input module designed for industrial and laboratory data acquisition systems. It belongs to the Analog Devices 5B Series, a family of modular signal conditioning products engineered for high accuracy, electrical isolation, and ease of integration with analog input subsystems. The 5B37-K02 specifically supports Type K thermocouples, providing a temperature measurement range from –100°C to +1350°C and delivering a 0–5 V analog output proportional to the input temperature signal. This module is a non-linearized version, meaning it outputs a voltage directly proportional to the thermocouple’s millivolt signal without applying linearization or cold-junction compensation internally.
2. Key Features
- Thermocouple Input Compatibility: Designed for Type K thermocouples, covering a wide temperature range from –100°C to +1350°C.
- Signal Conditioning: Converts low-level thermocouple signals into a high-level, noise-resistant 0–5 V output suitable for analog-to-digital converters (ADCs) or data acquisition systems.
- Non-linearized Output: Provides a direct, uncorrected voltage output proportional to the thermocouple’s natural response curve, allowing external linearization or software compensation.
- High Electrical Isolation: Incorporates 1500 V rms galvanic isolation between input, output, and power, protecting measurement systems from ground loops and high common-mode voltages.
- Compact Modular Design: Standard 5B Series form factor for easy installation into backplanes or DIN-rail carriers.
- High Accuracy and Stability: Precision amplification and filtering ensure low noise and minimal drift over time and temperature.
- Wide Operating Range: Suitable for harsh industrial environments with extended temperature and humidity tolerance.
- Plug-and-Play Integration: Compatible with 5B Series backplanes, providing standardized power and signal connections.
- Rugged Construction: Encapsulated module design for mechanical protection and electrical shielding.
3. Technical Specifications
- Input Type: Thermocouple Type K (Chromel–Alumel)
- Input Range: –100°C to +1350°C
- Input Signal Range: Corresponding to thermocouple millivolt output (approx. –3.554 mV to +54.886 mV for Type K)
- Output Range: 0 to +5 V DC
- Output Type: Single-ended voltage output
- Transfer Function: Non-linearized; direct proportional mapping of thermocouple voltage to output voltage
- Accuracy: Typically ±0.1% of full scale (excluding thermocouple error)
- Isolation Voltage: 1500 V rms continuous isolation (input-to-output and input-to-power)
- Bandwidth: Typically 3 Hz (low-pass filtered to reduce noise)
- Common-Mode Rejection Ratio (CMRR): >100 dB at 50/60 Hz
- Input Impedance: >10 MΩ
- Output Drive Capability: Up to 2 mA into 2 kΩ minimum load
- Power Supply Voltage: +5 V DC nominal (supplied via 5B backplane)
- Power Consumption: Approximately 25 mW typical
- Operating Temperature Range: –40°C to +85°C
- Storage Temperature Range: –40°C to +85°C
- Relative Humidity: 0–95% non-condensing
- Dimensions: 60 mm (L) × 53 mm (W) × 12.5 mm (H) (typical 5B module size)
- Weight: Approximately 45 g
- Material: Molded thermoplastic housing, epoxy encapsulated electronics
- Mounting: Plug-in module for 5B backplane or DIN-rail carrier
4. Functionality
The 5B37-K02 functions as a precision thermocouple signal conditioner. It accepts the low-level millivolt signal generated by a Type K thermocouple and amplifies it to a standardized 0–5 V output range. The module provides electrical isolation between the thermocouple input and the output circuitry, ensuring that ground potential differences or electrical noise do not affect measurement accuracy.
Because the 5B37-K02 is non-linearized, it does not internally compensate for the non-linear temperature-to-voltage relationship of the thermocouple. Instead, the output voltage corresponds directly to the thermocouple’s natural response curve. This design is ideal for systems where linearization and cold-junction compensation are performed externally—either in software or by a separate hardware module.
Typical Use Cases and Applications:
- Industrial process monitoring and control systems
- Laboratory temperature measurement setups
- Data acquisition systems requiring isolated thermocouple inputs
- Embedded control systems with external linearization algorithms
- Multi-channel temperature monitoring in manufacturing or testing environments
Compatibility:
- Fully compatible with Analog Devices 5B Series backplanes (e.g., 5B01, 5B08, 5B03)
- Works with standard Type K thermocouples
- Output can be connected to any analog input channel expecting a 0–5 V signal
5. Components & Accessories
Included Items:
- 5B37-K02 module (encapsulated signal conditioning unit)
- Integrated isolation and filtering circuitry
- Factory calibration for specified input/output range
Optional Accessories:
- 5B Series backplanes (e.g., 5B01 single-channel, 5B08 eight-channel)
- DIN-rail mounting adapters
- Thermocouple input connectors and terminal blocks
- External cold-junction compensation modules (if required)
- Shielded cables for noise-sensitive environments
Connectors:
- Input: Screw terminal or plug-in connector for thermocouple leads
- Output: Standard 5B backplane connector providing 0–5 V output and power interface
6. Installation & Setup
Requirements:
- Compatible 5B backplane or carrier
- +5 V DC power supply (provided through backplane)
- Type K thermocouple sensor
Mounting Options:
- Plug directly into a 5B backplane slot
- Mount via DIN-rail carrier for modular installations
Configuration Steps:
1. Insert the 5B37-K02 module into the designated backplane slot.
2. Connect the Type K thermocouple leads to the input terminals, observing correct polarity (Chromel positive, Alumel negative).
3. Connect the backplane output to the data acquisition system’s analog input channel.
4. Power the backplane with a regulated +5 V DC supply.
5. Perform system-level calibration or software linearization as required.
Environmental Considerations:
- Ensure adequate ventilation and protection from moisture or corrosive environments.
- Avoid exposure to strong electromagnetic fields or vibration beyond specified limits.
7. Performance & Capabilities
The 5B37-K02 delivers high performance in precision temperature measurement applications. Its low-noise amplification and filtering circuitry ensure stable, repeatable output signals even in electrically noisy industrial environments.
Speed and Response:
- The module’s bandwidth of approximately 3 Hz provides effective noise suppression while maintaining adequate response time for most temperature monitoring applications.
- Settling time is typically under 1 second for a full-scale step change.
Capacity and Efficiency:
- Designed for continuous operation with minimal power consumption (~25 mW).
- Can be deployed in multi-channel systems without significant thermal loading or power supply strain.
Accuracy and Stability:
- Factory-calibrated for precise scaling between thermocouple input and 0–5 V output.
- Long-term drift is minimal due to high-quality components and encapsulated design.
Limitations:
- Non-linearized output requires external compensation for accurate temperature readings.
- Not suitable for direct connection to thermocouples requiring built-in cold-junction compensation.
- Limited to Type K thermocouples; other thermocouple types require different 5B37 variants.
8. Standards & Compliance
The 5B37-K02 and the 5B Series modules are designed and manufactured in compliance with relevant industrial and safety standards:
- Electrical Safety: Meets IEC/EN 61010-1 requirements for measurement and control equipment.
- EMC Compliance: Conforms to EN 61326-1 for electromagnetic compatibility in industrial environments.
- RoHS Compliance: Fully compliant with EU Directive 2011/65/EU (Restriction of Hazardous Substances).
- CE Marked: Indicates conformity with European safety and EMC directives.
- UL Recognition: Many 5B Series modules are UL recognized for industrial use (verify specific certification for 5B37-K02).
- Quality Assurance: Manufactured under ISO 9001 certified quality management systems.
9. Additional Information
Warranty:
Typically supplied with a one-year limited warranty covering defects in materials and workmanship under normal operating conditions.
Support:
- Technical documentation, datasheets, and application notes available from Analog Devices.
- Engineering support for system integration and calibration guidance.
- Software tools and libraries for data acquisition systems that support 5B modules.
Maintenance:
- No routine maintenance required; module is factory-calibrated and sealed.
- Periodic verification of calibration recommended for critical measurement applications.
- Clean only with dry, lint-free cloth; avoid solvents or moisture ingress.
Updates and Revisions:
- The 5B37-K02 is part of a long-standing product line with stable specifications.
- Firmware updates are not applicable (analog hardware module).
- Replacement or alternative models available for other thermocouple types (e.g., 5B37-J02 for Type J).
Service Life and Reliability:
- Designed for long-term operation exceeding 10 years under normal conditions.
- Encapsulated construction protects against vibration, dust, and humidity.
Environmental and Safety Notes:
- Dispose of electronic components according to local environmental regulations.
- Ensure proper grounding and shielding in system design to maintain isolation integrity.
Summary
The Analog Devices 5B37-K02 is a high-performance, isolated thermocouple input module optimized for Type K sensors over a wide temperature range of –100°C to +1350°C. It provides a 0–5 V non-linearized output, enabling flexible integration with external linearization systems or software-based compensation. With its robust isolation, low noise, and compact modular design, the 5B37-K02 is ideally suited for industrial process control, laboratory instrumentation, and multi-channel data acquisition systems requiring reliable, high-accuracy temperature measurement.
Its adherence to international safety and EMC standards, combined with the proven reliability of the 5B Series platform, ensures consistent performance in demanding environments. The module’s plug-in architecture simplifies installation, maintenance, and system expansion, making it a versatile choice for engineers and system integrators seeking precision thermocouple signal conditioning in a modular format.
Name: 5B37-K02 Thermocouple Input Module
Model: 5B37-K02
Series: 5B Series Analog Signal Conditioning Modules
Article Number: 5B37-K02
Manufacturer: Analog Devices (5B Series family)
The 5B37-K02 is a precision thermocouple input module designed for industrial and laboratory data acquisition systems. It belongs to the Analog Devices 5B Series, a family of modular signal conditioning products engineered for high accuracy, electrical isolation, and ease of integration with analog input subsystems. The 5B37-K02 specifically supports Type K thermocouples, providing a temperature measurement range from –100°C to +1350°C and delivering a 0–5 V analog output proportional to the input temperature signal. This module is a non-linearized version, meaning it outputs a voltage directly proportional to the thermocouple’s millivolt signal without applying linearization or cold-junction compensation internally.
2. Key Features
- Thermocouple Input Compatibility: Designed for Type K thermocouples, covering a wide temperature range from –100°C to +1350°C.
- Signal Conditioning: Converts low-level thermocouple signals into a high-level, noise-resistant 0–5 V output suitable for analog-to-digital converters (ADCs) or data acquisition systems.
- Non-linearized Output: Provides a direct, uncorrected voltage output proportional to the thermocouple’s natural response curve, allowing external linearization or software compensation.
- High Electrical Isolation: Incorporates 1500 V rms galvanic isolation between input, output, and power, protecting measurement systems from ground loops and high common-mode voltages.
- Compact Modular Design: Standard 5B Series form factor for easy installation into backplanes or DIN-rail carriers.
- High Accuracy and Stability: Precision amplification and filtering ensure low noise and minimal drift over time and temperature.
- Wide Operating Range: Suitable for harsh industrial environments with extended temperature and humidity tolerance.
- Plug-and-Play Integration: Compatible with 5B Series backplanes, providing standardized power and signal connections.
- Rugged Construction: Encapsulated module design for mechanical protection and electrical shielding.
3. Technical Specifications
- Input Type: Thermocouple Type K (Chromel–Alumel)
- Input Range: –100°C to +1350°C
- Input Signal Range: Corresponding to thermocouple millivolt output (approx. –3.554 mV to +54.886 mV for Type K)
- Output Range: 0 to +5 V DC
- Output Type: Single-ended voltage output
- Transfer Function: Non-linearized; direct proportional mapping of thermocouple voltage to output voltage
- Accuracy: Typically ±0.1% of full scale (excluding thermocouple error)
- Isolation Voltage: 1500 V rms continuous isolation (input-to-output and input-to-power)
- Bandwidth: Typically 3 Hz (low-pass filtered to reduce noise)
- Common-Mode Rejection Ratio (CMRR): >100 dB at 50/60 Hz
- Input Impedance: >10 MΩ
- Output Drive Capability: Up to 2 mA into 2 kΩ minimum load
- Power Supply Voltage: +5 V DC nominal (supplied via 5B backplane)
- Power Consumption: Approximately 25 mW typical
- Operating Temperature Range: –40°C to +85°C
- Storage Temperature Range: –40°C to +85°C
- Relative Humidity: 0–95% non-condensing
- Dimensions: 60 mm (L) × 53 mm (W) × 12.5 mm (H) (typical 5B module size)
- Weight: Approximately 45 g
- Material: Molded thermoplastic housing, epoxy encapsulated electronics
- Mounting: Plug-in module for 5B backplane or DIN-rail carrier
4. Functionality
The 5B37-K02 functions as a precision thermocouple signal conditioner. It accepts the low-level millivolt signal generated by a Type K thermocouple and amplifies it to a standardized 0–5 V output range. The module provides electrical isolation between the thermocouple input and the output circuitry, ensuring that ground potential differences or electrical noise do not affect measurement accuracy.
Because the 5B37-K02 is non-linearized, it does not internally compensate for the non-linear temperature-to-voltage relationship of the thermocouple. Instead, the output voltage corresponds directly to the thermocouple’s natural response curve. This design is ideal for systems where linearization and cold-junction compensation are performed externally—either in software or by a separate hardware module.
Typical Use Cases and Applications:
- Industrial process monitoring and control systems
- Laboratory temperature measurement setups
- Data acquisition systems requiring isolated thermocouple inputs
- Embedded control systems with external linearization algorithms
- Multi-channel temperature monitoring in manufacturing or testing environments
Compatibility:
- Fully compatible with Analog Devices 5B Series backplanes (e.g., 5B01, 5B08, 5B03)
- Works with standard Type K thermocouples
- Output can be connected to any analog input channel expecting a 0–5 V signal
5. Components & Accessories
Included Items:
- 5B37-K02 module (encapsulated signal conditioning unit)
- Integrated isolation and filtering circuitry
- Factory calibration for specified input/output range
Optional Accessories:
- 5B Series backplanes (e.g., 5B01 single-channel, 5B08 eight-channel)
- DIN-rail mounting adapters
- Thermocouple input connectors and terminal blocks
- External cold-junction compensation modules (if required)
- Shielded cables for noise-sensitive environments
Connectors:
- Input: Screw terminal or plug-in connector for thermocouple leads
- Output: Standard 5B backplane connector providing 0–5 V output and power interface
6. Installation & Setup
Requirements:
- Compatible 5B backplane or carrier
- +5 V DC power supply (provided through backplane)
- Type K thermocouple sensor
Mounting Options:
- Plug directly into a 5B backplane slot
- Mount via DIN-rail carrier for modular installations
Configuration Steps:
1. Insert the 5B37-K02 module into the designated backplane slot.
2. Connect the Type K thermocouple leads to the input terminals, observing correct polarity (Chromel positive, Alumel negative).
3. Connect the backplane output to the data acquisition system’s analog input channel.
4. Power the backplane with a regulated +5 V DC supply.
5. Perform system-level calibration or software linearization as required.
Environmental Considerations:
- Ensure adequate ventilation and protection from moisture or corrosive environments.
- Avoid exposure to strong electromagnetic fields or vibration beyond specified limits.
7. Performance & Capabilities
The 5B37-K02 delivers high performance in precision temperature measurement applications. Its low-noise amplification and filtering circuitry ensure stable, repeatable output signals even in electrically noisy industrial environments.
Speed and Response:
- The module’s bandwidth of approximately 3 Hz provides effective noise suppression while maintaining adequate response time for most temperature monitoring applications.
- Settling time is typically under 1 second for a full-scale step change.
Capacity and Efficiency:
- Designed for continuous operation with minimal power consumption (~25 mW).
- Can be deployed in multi-channel systems without significant thermal loading or power supply strain.
Accuracy and Stability:
- Factory-calibrated for precise scaling between thermocouple input and 0–5 V output.
- Long-term drift is minimal due to high-quality components and encapsulated design.
Limitations:
- Non-linearized output requires external compensation for accurate temperature readings.
- Not suitable for direct connection to thermocouples requiring built-in cold-junction compensation.
- Limited to Type K thermocouples; other thermocouple types require different 5B37 variants.
8. Standards & Compliance
The 5B37-K02 and the 5B Series modules are designed and manufactured in compliance with relevant industrial and safety standards:
- Electrical Safety: Meets IEC/EN 61010-1 requirements for measurement and control equipment.
- EMC Compliance: Conforms to EN 61326-1 for electromagnetic compatibility in industrial environments.
- RoHS Compliance: Fully compliant with EU Directive 2011/65/EU (Restriction of Hazardous Substances).
- CE Marked: Indicates conformity with European safety and EMC directives.
- UL Recognition: Many 5B Series modules are UL recognized for industrial use (verify specific certification for 5B37-K02).
- Quality Assurance: Manufactured under ISO 9001 certified quality management systems.
9. Additional Information
Warranty:
Typically supplied with a one-year limited warranty covering defects in materials and workmanship under normal operating conditions.
Support:
- Technical documentation, datasheets, and application notes available from Analog Devices.
- Engineering support for system integration and calibration guidance.
- Software tools and libraries for data acquisition systems that support 5B modules.
Maintenance:
- No routine maintenance required; module is factory-calibrated and sealed.
- Periodic verification of calibration recommended for critical measurement applications.
- Clean only with dry, lint-free cloth; avoid solvents or moisture ingress.
Updates and Revisions:
- The 5B37-K02 is part of a long-standing product line with stable specifications.
- Firmware updates are not applicable (analog hardware module).
- Replacement or alternative models available for other thermocouple types (e.g., 5B37-J02 for Type J).
Service Life and Reliability:
- Designed for long-term operation exceeding 10 years under normal conditions.
- Encapsulated construction protects against vibration, dust, and humidity.
Environmental and Safety Notes:
- Dispose of electronic components according to local environmental regulations.
- Ensure proper grounding and shielding in system design to maintain isolation integrity.
Summary
The Analog Devices 5B37-K02 is a high-performance, isolated thermocouple input module optimized for Type K sensors over a wide temperature range of –100°C to +1350°C. It provides a 0–5 V non-linearized output, enabling flexible integration with external linearization systems or software-based compensation. With its robust isolation, low noise, and compact modular design, the 5B37-K02 is ideally suited for industrial process control, laboratory instrumentation, and multi-channel data acquisition systems requiring reliable, high-accuracy temperature measurement.
Its adherence to international safety and EMC standards, combined with the proven reliability of the 5B Series platform, ensures consistent performance in demanding environments. The module’s plug-in architecture simplifies installation, maintenance, and system expansion, making it a versatile choice for engineers and system integrators seeking precision thermocouple signal conditioning in a modular format.
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