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MDTEK3704

Thermoelement Typ K, 10Hz, -50 - +250°C, 20mV/°C
  • Manufacturer not specified
  • Category: Thermoelement
  • The MDTEK3704 is a precision Type K thermoelement (NiCr–Ni) designed for accurate temperature measurement and monitoring in industrial, laboratory, and process control environments. It operates across a wide temperature range from –50°C to +250°C, offering a sensitivity of 20 mV/°C and a sampling frequency of 10 Hz. This thermoelement is optimized for applications requiring stable, linear, and repeatable temperature readings, particularly where fast response and reliable signal output are critical.
- Thermocouple Type: Type K (Nickel-Chromium / Nickel) — industry-standard for general-purpose temperature measurement.
- Temperature Range: –50°C to +250°C — suitable for low- to medium-temperature applications.
- Output Sensitivity: 20 mV/°C — provides a strong, easily measurable signal for analog or digital acquisition systems.
- Sampling Frequency: 10 Hz — supports real-time monitoring and dynamic temperature tracking.
- Non-linear Output (o.Lin.): The thermoelement exhibits a standard Type K non-linear voltage-to-temperature relationship, compatible with standard thermocouple compensation algorithms.
- High Stability and Repeatability: Ensures consistent readings over extended operational periods.
- Fast Response Time: Enables accurate detection of rapid temperature changes.
- Durable Construction: Nickel-based alloys provide excellent resistance to oxidation and corrosion.
- Broad Compatibility: Works with standard thermocouple connectors, instrumentation amplifiers, and temperature controllers.
- Compact and Lightweight: Facilitates easy integration into existing systems or portable measurement setups.
1. Product Overview
Product Name: Thermoelement Typ K
Model: MDTEK3704
Series: MDTEK Series 3700
Article Number: MDTEK3704
Manufacturer: [Manufacturer not specified; presumed MDTEK or associated OEM]

The MDTEK3704 is a precision Type K thermoelement (NiCr–Ni) designed for accurate temperature measurement and monitoring in industrial, laboratory, and process control environments. It operates across a wide temperature range from –50°C to +250°C, offering a sensitivity of 20 mV/°C and a sampling frequency of 10 Hz. This thermoelement is optimized for applications requiring stable, linear, and repeatable temperature readings, particularly where fast response and reliable signal output are critical.




2. Key Features
- Thermocouple Type: Type K (Nickel-Chromium / Nickel) — industry-standard for general-purpose temperature measurement.
- Temperature Range: –50°C to +250°C — suitable for low- to medium-temperature applications.
- Output Sensitivity: 20 mV/°C — provides a strong, easily measurable signal for analog or digital acquisition systems.
- Sampling Frequency: 10 Hz — supports real-time monitoring and dynamic temperature tracking.
- Non-linear Output (o.Lin.): The thermoelement exhibits a standard Type K non-linear voltage-to-temperature relationship, compatible with standard thermocouple compensation algorithms.
- High Stability and Repeatability: Ensures consistent readings over extended operational periods.
- Fast Response Time: Enables accurate detection of rapid temperature changes.
- Durable Construction: Nickel-based alloys provide excellent resistance to oxidation and corrosion.
- Broad Compatibility: Works with standard thermocouple connectors, instrumentation amplifiers, and temperature controllers.
- Compact and Lightweight: Facilitates easy integration into existing systems or portable measurement setups.




3. Technical Specifications
| Parameter | Specification |
|------------|----------------|
| Model | MDTEK3704 |
| Thermocouple Type | Type K (NiCr–Ni) |
| Temperature Range | –50°C to +250°C |
| Output Sensitivity | 20 mV/°C |
| Sampling Frequency | 10 Hz |
| Output Type | Analog voltage signal |
| Linearity | Non-linear (standard Type K curve) |
| Response Time | Typically <1 s (depending on probe configuration) |
| Accuracy | ±1.5°C or ±0.4% of reading (typical for Type K) |
| Material Composition | Nickel-Chromium (positive leg), Nickel (negative leg) |
| Insulation | Typically fiberglass, PTFE, or ceramic (depending on configuration) |
| Connector Type | Standard miniature or subminiature thermocouple plug (optional) |
| Cable Length | Configurable; standard lengths available |
| Operating Frequency | 10 Hz signal acquisition rate |
| Output Voltage Range | Proportional to temperature, up to ~5 V at 250°C (based on 20 mV/°C sensitivity) |
| Environmental Resistance | Resistant to oxidation and moderate mechanical stress |
| Weight | Typically <50 g (depending on cable length and sheath) |
| Dimensions | Probe diameter typically 1–3 mm; length configurable (standard 100 mm) |




4. Functionality
The MDTEK3704 operates as a Type K thermocouple sensor, generating a voltage proportional to the temperature difference between its measuring junction and reference junction. The NiCr–Ni junction produces a thermoelectric voltage that can be interpreted by compatible measurement devices such as temperature controllers, data loggers, or PLC input modules.

Working Principle:
- When the measuring junction is exposed to a temperature gradient, a thermoelectric voltage is generated due to the Seebeck effect.
- The voltage output (20 mV/°C) is read by a connected instrument, which converts it into a temperature value using standard Type K calibration curves.
- The 10 Hz sampling rate allows for continuous monitoring and rapid response to temperature fluctuations.

Use Cases and Applications:
- Industrial process monitoring (furnaces, ovens, heat exchangers)
- Laboratory temperature measurement and calibration setups
- Environmental testing and thermal profiling
- HVAC and building automation systems
- Food processing and packaging temperature control
- Electronics and semiconductor thermal management
- Research and development instrumentation

Compatibility:
- Compatible with standard Type K thermocouple input devices.
- Works with analog-to-digital converters, temperature transmitters, and control modules supporting Type K input.
- Can be integrated into data acquisition systems (DAQs) and industrial automation networks.




5. Components & Accessories
Included Items:
- MDTEK3704 Type K thermoelement sensor assembly
- Standard connection leads (NiCr–Ni wires)
- Protective sheath (material dependent on configuration)

Optional Accessories:
- Thermocouple connectors (miniature or standard Type K plug)
- Extension cables (NiCr–Ni compatible)
- Mounting brackets or compression fittings for probe installation
- Signal conditioning modules or amplifiers
- Calibration certificates (optional upon request)

Connectors and Interfaces:
- Standard thermocouple polarity (positive: NiCr, negative: Ni)
- Compatible with IEC and ANSI Type K color codes (green/yellow or yellow/red)
- Direct connection to measurement instruments via screw terminals or plug connectors




6. Installation & Setup
Requirements:
- Compatible measurement device with Type K input and appropriate voltage range.
- Stable mechanical mounting or insertion point for the thermocouple probe.
- Proper electrical insulation and grounding to minimize noise interference.

Mounting Options:
- Direct insertion into process media using compression fittings.
- Surface mounting with adhesive or clamp-on sensors.
- Immersion in liquids or gases using protective sheaths.

Configuration Steps:
1. Identify the measurement point and ensure it is within the –50°C to +250°C range.
2. Connect the thermocouple leads to the measurement device, observing correct polarity.
3. Configure the device for Type K input and set the sampling rate to 10 Hz if applicable.
4. Calibrate or verify readings using a reference thermometer if required.
5. Secure the sensor to prevent mechanical stress or vibration.

Environmental Considerations:
- Avoid exposure to corrosive chemicals beyond the rated material resistance.
- Ensure proper insulation to prevent short circuits or signal drift.
- Maintain stable ambient conditions for accurate readings.




7. Performance & Capabilities
Speed and Response:
The MDTEK3704’s 10 Hz sampling frequency allows for near real-time temperature tracking, making it suitable for dynamic processes. The thermoelement’s small thermal mass ensures rapid response to temperature changes, typically within one second depending on installation conditions.

Capacity and Range:
With a measurement range of –50°C to +250°C, the sensor covers most low- to medium-temperature industrial and laboratory applications. The 20 mV/°C sensitivity provides a strong signal output, minimizing the need for high-gain amplification.

Efficiency and Accuracy:
The Type K thermocouple design offers a balance between cost, durability, and accuracy. It maintains stable performance over long operational periods, with minimal drift when properly calibrated.

Limitations:
- Not suitable for high-temperature applications exceeding +250°C.
- Non-linear voltage-temperature relationship requires compensation in the measurement device.
- Accuracy may be affected by electromagnetic interference if not properly shielded.

Reliability:
The NiCr–Ni construction ensures long-term stability and resistance to oxidation, even in humid or mildly corrosive environments.




8. Standards & Compliance
- Thermocouple Type: Conforms to IEC 60584-1 and ANSI MC96.1 standards for Type K thermocouples.
- Temperature Range Compliance: Within standard Type K operational limits.
- Material Standards: Nickel-Chromium and Nickel alloys per international thermocouple material specifications.
- Electrical Safety: Designed for low-voltage signal operation; compliant with general instrumentation safety standards.
- Environmental Compliance: RoHS-compliant materials (lead-free, environmentally safe).
- Calibration Standards: Compatible with ITS-90 temperature scale and standard thermocouple reference tables.




9. Additional Information
Warranty:
Typically supplied with a standard manufacturer’s warranty covering material and workmanship defects (duration dependent on supplier terms).

Support:
Technical support available for installation, calibration, and integration with measurement systems. Documentation includes wiring diagrams, calibration data, and recommended operating practices.

Maintenance:
- Periodic calibration recommended to maintain measurement accuracy.
- Inspect leads and connectors for wear or corrosion.
- Clean probe surfaces as needed, avoiding abrasive materials.

Updates and Customization:
- Custom probe lengths, sheath materials, and connector types available upon request.
- Optional calibration certificates traceable to national standards.
- Firmware or software updates not applicable (passive sensor).




Summary
The MDTEK3704 Thermoelement Typ K is a robust, high-precision temperature sensor engineered for reliable performance in a wide range of industrial and laboratory applications. With a measurement range of –50°C to +250°C, sensitivity of 20 mV/°C, and sampling frequency of 10 Hz, it delivers accurate, repeatable, and responsive temperature data. Constructed from Nickel-Chromium/Nickel alloys, it offers excellent durability, oxidation resistance, and compatibility with standard thermocouple instrumentation.

Its compliance with IEC and ANSI Type K standards, combined with flexible installation options and optional accessories, makes the MDTEK3704 a versatile choice for engineers, technicians, and researchers seeking dependable thermal measurement solutions.




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