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- Wide Measurement Range: Supports Pt100 sensors for temperature measurement from –200°C to +850°C, covering cryogenic to high-temperature industrial processes.
- High Accuracy: General measurement accuracy of ±0.3°C, ensuring precise readings across the entire range.
- High Resolution: Temperature resolution of 0.1°C, allowing fine-grained monitoring and control.
- Sensor Compatibility: Compatible with 2-wire, 3-wire, and 4-wire Pt100 RTDs, providing flexibility for different installation and accuracy requirements.
- Excitation Current: Operates with a 0.25 mA sensor excitation current, minimizing self-heating effects in the RTD element.
- Linearization: Integrated linearization for Pt100 (α = 0.00385) sensors, ensuring accurate temperature-to-signal conversion.
- Input Isolation: Galvanically isolated input for enhanced safety and noise immunity, preventing ground loops and interference between measurement and communication circuits.
- High Common-Mode Rejection: 100 dB CMR (Common Mode Rejection), ensuring stable operation in environments with high electrical noise or potential differences.
- Digital Communication: RS485 interface with ASCII output, enabling integration into distributed control systems, PLCs, and SCADA networks.
- Industrial-Grade Design: Built for continuous operation in demanding industrial environments, offering long-term stability and reliability.
- High Accuracy: General measurement accuracy of ±0.3°C, ensuring precise readings across the entire range.
- High Resolution: Temperature resolution of 0.1°C, allowing fine-grained monitoring and control.
- Sensor Compatibility: Compatible with 2-wire, 3-wire, and 4-wire Pt100 RTDs, providing flexibility for different installation and accuracy requirements.
- Excitation Current: Operates with a 0.25 mA sensor excitation current, minimizing self-heating effects in the RTD element.
- Linearization: Integrated linearization for Pt100 (α = 0.00385) sensors, ensuring accurate temperature-to-signal conversion.
- Input Isolation: Galvanically isolated input for enhanced safety and noise immunity, preventing ground loops and interference between measurement and communication circuits.
- High Common-Mode Rejection: 100 dB CMR (Common Mode Rejection), ensuring stable operation in environments with high electrical noise or potential differences.
- Digital Communication: RS485 interface with ASCII output, enabling integration into distributed control systems, PLCs, and SCADA networks.
- Industrial-Grade Design: Built for continuous operation in demanding industrial environments, offering long-term stability and reliability.
1. Product Overview
Product Name: Temperatur Pt100 Transmitter
Model: C1412
Series: C14 Series (Temperature Measurement and Signal Transmission Modules)
Article Number: C1412
Manufacturer: [Manufacturer not specified in source content; typically associated with industrial measurement and automation equipment suppliers]
The C1412 is a precision temperature measurement and transmission module designed for industrial and laboratory applications requiring accurate Pt100 sensor interfacing and robust digital communication. It supports a wide temperature measurement range from –200°C to +850°C, features galvanically isolated input, and communicates via RS485 ASCII protocol. The device is optimized for high accuracy, linearized output, and reliable performance in electrically noisy environments.
2. Key Features
- Wide Measurement Range: Supports Pt100 sensors for temperature measurement from –200°C to +850°C, covering cryogenic to high-temperature industrial processes.
- High Accuracy: General measurement accuracy of ±0.3°C, ensuring precise readings across the entire range.
- High Resolution: Temperature resolution of 0.1°C, allowing fine-grained monitoring and control.
- Sensor Compatibility: Compatible with 2-wire, 3-wire, and 4-wire Pt100 RTDs, providing flexibility for different installation and accuracy requirements.
- Excitation Current: Operates with a 0.25 mA sensor excitation current, minimizing self-heating effects in the RTD element.
- Linearization: Integrated linearization for Pt100 (α = 0.00385) sensors, ensuring accurate temperature-to-signal conversion.
- Input Isolation: Galvanically isolated input for enhanced safety and noise immunity, preventing ground loops and interference between measurement and communication circuits.
- High Common-Mode Rejection: 100 dB CMR (Common Mode Rejection), ensuring stable operation in environments with high electrical noise or potential differences.
- Digital Communication: RS485 interface with ASCII output, enabling integration into distributed control systems, PLCs, and SCADA networks.
- Industrial-Grade Design: Built for continuous operation in demanding industrial environments, offering long-term stability and reliability.
3. Technical Specifications
- Sensor Type: Pt100 Resistance Temperature Detector (RTD)
- Temperature Range: –200°C to +850°C
- Temperature Coefficient: α = 0.00385 (IEC 60751 standard)
- Measurement Resolution: 0.1°C
- Measurement Accuracy: ±0.3°C (typical)
- Sensor Connection: 2-wire, 3-wire, or 4-wire configuration
- Excitation Current: 0.25 mA constant current source
- Input Isolation: Galvanically isolated input channel
- Common Mode Rejection Ratio (CMRR): 100 dB
- Output Interface: RS485 serial communication
- Output Format: ASCII data protocol
- Linearization: Internal linearization for Pt100 characteristics
- Power Supply: [Not specified; typically 12–30 VDC for similar modules]
- Operating Temperature: [Not specified; typically –20°C to +60°C for industrial modules]
- Storage Temperature: [Not specified; typically –40°C to +85°C]
- Dimensions: [Not specified; standard DIN-rail or compact module form factor expected]
- Weight: [Not specified; typically <200 g for compact transmitter modules]
- Material: Industrial-grade housing, likely ABS or polycarbonate enclosure with metal shielding for EMI protection
4. Functionality
The C1412 functions as a temperature measurement and signal transmission module for Pt100 sensors. It measures the resistance of the connected Pt100 element, converts it into a temperature value using an internal linearization algorithm (based on the 0.00385 temperature coefficient), and transmits the result digitally via RS485.
Working Principle:
1. The Pt100 sensor detects temperature changes, altering its resistance proportionally.
2. The C1412 applies a stable 0.25 mA excitation current to the sensor.
3. The module measures the resulting voltage drop across the sensor and calculates the corresponding resistance.
4. The internal processor linearizes the resistance-to-temperature conversion according to the IEC 60751 standard.
5. The temperature value is formatted as ASCII data and transmitted over the RS485 bus.
6. The galvanic isolation ensures that the measurement circuit remains electrically separated from the communication interface, preventing interference and protecting connected equipment.
Use Cases and Applications:
- Industrial process monitoring and control
- Laboratory temperature measurement systems
- HVAC and building automation
- Energy management and environmental monitoring
- Equipment temperature supervision (motors, bearings, furnaces)
- Integration into PLCs, SCADA, and distributed control systems (DCS)
Compatibility:
- Compatible with standard Pt100 sensors (IEC 60751, α = 0.00385)
- Communicates with RS485-compatible devices such as PLCs, HMIs, data loggers, and industrial PCs
- ASCII protocol ensures easy integration with custom software or existing automation systems
5. Components & Accessories
Included Items:
- C1412 temperature transmitter module
- Integrated RS485 communication interface
- Terminal connectors for sensor input and communication lines
Optional Accessories (typical for this class of device):
- DIN-rail mounting clips or brackets
- RS485 communication cables and connectors
- USB-to-RS485 converter for PC configuration or monitoring
- Pt100 sensors (2-, 3-, or 4-wire)
- Protective enclosures or junction boxes for field installation
Connectors:
- Sensor Input Terminals: For 2/3/4-wire Pt100 connection
- Communication Terminals: RS485 A/B differential pair
- Power Supply Terminals: [Assumed standard 2-pin or 3-pin terminal block]
6. Installation & Setup
Requirements:
- Properly rated power supply (typically 12–30 VDC, depending on manufacturer specification)
- Compatible Pt100 sensor (IEC 60751, α = 0.00385)
- RS485 network connection with correct termination and biasing resistors
Mounting Options:
- DIN-rail mounting (standard for industrial modules)
- Panel or enclosure mounting for laboratory or OEM integration
Configuration Steps:
1. Connect the Pt100 sensor to the input terminals according to the wiring scheme (2-, 3-, or 4-wire).
2. Connect the RS485 communication lines (A/B) to the network bus.
3. Apply power to the module.
4. Configure communication parameters (baud rate, address, parity) if applicable.
5. Verify data transmission using an RS485 terminal or monitoring software.
6. Integrate the module into the control or monitoring system using ASCII commands.
Safety Considerations:
- Ensure galvanic isolation is maintained between input and output circuits.
- Follow proper grounding and shielding practices to minimize noise.
- Avoid exceeding specified temperature and voltage limits.
7. Performance & Capabilities
Measurement Performance:
- Range: –200°C to +850°C
- Resolution: 0.1°C
- Accuracy: ±0.3°C
- Response Time: Determined by sensor characteristics and sampling rate (typically <1 s for Pt100 systems)
- Linearity: Internally linearized for Pt100 (α = 0.00385)
Electrical Performance:
- Input Isolation: Provides galvanic separation between measurement and communication circuits, enhancing safety and reducing interference.
- Noise Immunity: 100 dB CMR ensures stable readings even in high-noise industrial environments.
- Communication: RS485 differential signaling supports long cable runs (up to 1200 m) and multi-drop network configurations.
- Data Format: ASCII output simplifies integration with various control systems and software platforms.
Efficiency and Reliability:
- Low excitation current (0.25 mA) minimizes sensor self-heating, improving measurement accuracy.
- Robust design ensures long-term stability and minimal drift.
- Suitable for continuous operation in industrial automation systems.
Limitations:
- Designed specifically for Pt100 sensors (not compatible with thermocouples or other RTD types).
- Requires RS485 communication interface for data retrieval.
- Environmental limits (temperature, humidity) depend on housing and installation conditions.
8. Standards & Compliance
Sensor Standard:
- Complies with IEC 60751 for Pt100 RTDs (α = 0.00385).
Electrical and Communication Standards:
- RS485 Interface: Complies with EIA/TIA-485-A standard for balanced differential communication.
- Isolation and Safety: Designed to meet industrial isolation and EMC requirements (100 dB CMR).
Regulatory Compliance (typical for industrial modules):
- CE marking for electromagnetic compatibility and low-voltage directives (assumed).
- RoHS compliance for environmental safety (assumed).
- Conforms to industrial temperature and vibration standards (depending on manufacturer).
Industry Standards:
- Suitable for integration into systems conforming to IEC, EN, and ISO industrial automation standards.
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 12–24 months) covering defects in materials and workmanship.
Support:
- Technical documentation, wiring diagrams, and communication protocol details available from the manufacturer or distributor.
- Firmware and configuration tools (if applicable) provided for system integration.
Maintenance:
- Minimal maintenance required; periodic verification of sensor calibration recommended.
- Check wiring integrity and RS485 network connections periodically.
Updates and Upgrades:
- Firmware updates (if supported) may enhance communication compatibility or performance.
- Compatible with future system expansions via RS485 multi-drop network topology.
Summary
The C1412 Temperatur Pt100 Transmitter is a high-precision, isolated temperature measurement module designed for industrial and laboratory applications requiring accurate Pt100 sensor interfacing and robust digital communication. With a measurement range of –200°C to +850°C, ±0.3°C accuracy, 0.1°C resolution, and 100 dB common-mode rejection, it delivers reliable performance even in electrically noisy environments. The RS485 ASCII output ensures seamless integration into modern automation systems, while the galvanically isolated input enhances safety and measurement integrity. Supporting 2-, 3-, and 4-wire Pt100 configurations, the C1412 offers flexibility, precision, and durability for a wide range of temperature monitoring and control applications.
Product Name: Temperatur Pt100 Transmitter
Model: C1412
Series: C14 Series (Temperature Measurement and Signal Transmission Modules)
Article Number: C1412
Manufacturer: [Manufacturer not specified in source content; typically associated with industrial measurement and automation equipment suppliers]
The C1412 is a precision temperature measurement and transmission module designed for industrial and laboratory applications requiring accurate Pt100 sensor interfacing and robust digital communication. It supports a wide temperature measurement range from –200°C to +850°C, features galvanically isolated input, and communicates via RS485 ASCII protocol. The device is optimized for high accuracy, linearized output, and reliable performance in electrically noisy environments.
2. Key Features
- Wide Measurement Range: Supports Pt100 sensors for temperature measurement from –200°C to +850°C, covering cryogenic to high-temperature industrial processes.
- High Accuracy: General measurement accuracy of ±0.3°C, ensuring precise readings across the entire range.
- High Resolution: Temperature resolution of 0.1°C, allowing fine-grained monitoring and control.
- Sensor Compatibility: Compatible with 2-wire, 3-wire, and 4-wire Pt100 RTDs, providing flexibility for different installation and accuracy requirements.
- Excitation Current: Operates with a 0.25 mA sensor excitation current, minimizing self-heating effects in the RTD element.
- Linearization: Integrated linearization for Pt100 (α = 0.00385) sensors, ensuring accurate temperature-to-signal conversion.
- Input Isolation: Galvanically isolated input for enhanced safety and noise immunity, preventing ground loops and interference between measurement and communication circuits.
- High Common-Mode Rejection: 100 dB CMR (Common Mode Rejection), ensuring stable operation in environments with high electrical noise or potential differences.
- Digital Communication: RS485 interface with ASCII output, enabling integration into distributed control systems, PLCs, and SCADA networks.
- Industrial-Grade Design: Built for continuous operation in demanding industrial environments, offering long-term stability and reliability.
3. Technical Specifications
- Sensor Type: Pt100 Resistance Temperature Detector (RTD)
- Temperature Range: –200°C to +850°C
- Temperature Coefficient: α = 0.00385 (IEC 60751 standard)
- Measurement Resolution: 0.1°C
- Measurement Accuracy: ±0.3°C (typical)
- Sensor Connection: 2-wire, 3-wire, or 4-wire configuration
- Excitation Current: 0.25 mA constant current source
- Input Isolation: Galvanically isolated input channel
- Common Mode Rejection Ratio (CMRR): 100 dB
- Output Interface: RS485 serial communication
- Output Format: ASCII data protocol
- Linearization: Internal linearization for Pt100 characteristics
- Power Supply: [Not specified; typically 12–30 VDC for similar modules]
- Operating Temperature: [Not specified; typically –20°C to +60°C for industrial modules]
- Storage Temperature: [Not specified; typically –40°C to +85°C]
- Dimensions: [Not specified; standard DIN-rail or compact module form factor expected]
- Weight: [Not specified; typically <200 g for compact transmitter modules]
- Material: Industrial-grade housing, likely ABS or polycarbonate enclosure with metal shielding for EMI protection
4. Functionality
The C1412 functions as a temperature measurement and signal transmission module for Pt100 sensors. It measures the resistance of the connected Pt100 element, converts it into a temperature value using an internal linearization algorithm (based on the 0.00385 temperature coefficient), and transmits the result digitally via RS485.
Working Principle:
1. The Pt100 sensor detects temperature changes, altering its resistance proportionally.
2. The C1412 applies a stable 0.25 mA excitation current to the sensor.
3. The module measures the resulting voltage drop across the sensor and calculates the corresponding resistance.
4. The internal processor linearizes the resistance-to-temperature conversion according to the IEC 60751 standard.
5. The temperature value is formatted as ASCII data and transmitted over the RS485 bus.
6. The galvanic isolation ensures that the measurement circuit remains electrically separated from the communication interface, preventing interference and protecting connected equipment.
Use Cases and Applications:
- Industrial process monitoring and control
- Laboratory temperature measurement systems
- HVAC and building automation
- Energy management and environmental monitoring
- Equipment temperature supervision (motors, bearings, furnaces)
- Integration into PLCs, SCADA, and distributed control systems (DCS)
Compatibility:
- Compatible with standard Pt100 sensors (IEC 60751, α = 0.00385)
- Communicates with RS485-compatible devices such as PLCs, HMIs, data loggers, and industrial PCs
- ASCII protocol ensures easy integration with custom software or existing automation systems
5. Components & Accessories
Included Items:
- C1412 temperature transmitter module
- Integrated RS485 communication interface
- Terminal connectors for sensor input and communication lines
Optional Accessories (typical for this class of device):
- DIN-rail mounting clips or brackets
- RS485 communication cables and connectors
- USB-to-RS485 converter for PC configuration or monitoring
- Pt100 sensors (2-, 3-, or 4-wire)
- Protective enclosures or junction boxes for field installation
Connectors:
- Sensor Input Terminals: For 2/3/4-wire Pt100 connection
- Communication Terminals: RS485 A/B differential pair
- Power Supply Terminals: [Assumed standard 2-pin or 3-pin terminal block]
6. Installation & Setup
Requirements:
- Properly rated power supply (typically 12–30 VDC, depending on manufacturer specification)
- Compatible Pt100 sensor (IEC 60751, α = 0.00385)
- RS485 network connection with correct termination and biasing resistors
Mounting Options:
- DIN-rail mounting (standard for industrial modules)
- Panel or enclosure mounting for laboratory or OEM integration
Configuration Steps:
1. Connect the Pt100 sensor to the input terminals according to the wiring scheme (2-, 3-, or 4-wire).
2. Connect the RS485 communication lines (A/B) to the network bus.
3. Apply power to the module.
4. Configure communication parameters (baud rate, address, parity) if applicable.
5. Verify data transmission using an RS485 terminal or monitoring software.
6. Integrate the module into the control or monitoring system using ASCII commands.
Safety Considerations:
- Ensure galvanic isolation is maintained between input and output circuits.
- Follow proper grounding and shielding practices to minimize noise.
- Avoid exceeding specified temperature and voltage limits.
7. Performance & Capabilities
Measurement Performance:
- Range: –200°C to +850°C
- Resolution: 0.1°C
- Accuracy: ±0.3°C
- Response Time: Determined by sensor characteristics and sampling rate (typically <1 s for Pt100 systems)
- Linearity: Internally linearized for Pt100 (α = 0.00385)
Electrical Performance:
- Input Isolation: Provides galvanic separation between measurement and communication circuits, enhancing safety and reducing interference.
- Noise Immunity: 100 dB CMR ensures stable readings even in high-noise industrial environments.
- Communication: RS485 differential signaling supports long cable runs (up to 1200 m) and multi-drop network configurations.
- Data Format: ASCII output simplifies integration with various control systems and software platforms.
Efficiency and Reliability:
- Low excitation current (0.25 mA) minimizes sensor self-heating, improving measurement accuracy.
- Robust design ensures long-term stability and minimal drift.
- Suitable for continuous operation in industrial automation systems.
Limitations:
- Designed specifically for Pt100 sensors (not compatible with thermocouples or other RTD types).
- Requires RS485 communication interface for data retrieval.
- Environmental limits (temperature, humidity) depend on housing and installation conditions.
8. Standards & Compliance
Sensor Standard:
- Complies with IEC 60751 for Pt100 RTDs (α = 0.00385).
Electrical and Communication Standards:
- RS485 Interface: Complies with EIA/TIA-485-A standard for balanced differential communication.
- Isolation and Safety: Designed to meet industrial isolation and EMC requirements (100 dB CMR).
Regulatory Compliance (typical for industrial modules):
- CE marking for electromagnetic compatibility and low-voltage directives (assumed).
- RoHS compliance for environmental safety (assumed).
- Conforms to industrial temperature and vibration standards (depending on manufacturer).
Industry Standards:
- Suitable for integration into systems conforming to IEC, EN, and ISO industrial automation standards.
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 12–24 months) covering defects in materials and workmanship.
Support:
- Technical documentation, wiring diagrams, and communication protocol details available from the manufacturer or distributor.
- Firmware and configuration tools (if applicable) provided for system integration.
Maintenance:
- Minimal maintenance required; periodic verification of sensor calibration recommended.
- Check wiring integrity and RS485 network connections periodically.
Updates and Upgrades:
- Firmware updates (if supported) may enhance communication compatibility or performance.
- Compatible with future system expansions via RS485 multi-drop network topology.
Summary
The C1412 Temperatur Pt100 Transmitter is a high-precision, isolated temperature measurement module designed for industrial and laboratory applications requiring accurate Pt100 sensor interfacing and robust digital communication. With a measurement range of –200°C to +850°C, ±0.3°C accuracy, 0.1°C resolution, and 100 dB common-mode rejection, it delivers reliable performance even in electrically noisy environments. The RS485 ASCII output ensures seamless integration into modern automation systems, while the galvanically isolated input enhances safety and measurement integrity. Supporting 2-, 3-, and 4-wire Pt100 configurations, the C1412 offers flexibility, precision, and durability for a wide range of temperature monitoring and control applications.
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