CMT-64 Silicon Diode Cryogenic Thermometer | Cryomagtech
CMT-64 silicon diode thermometer delivers accurate cryogenic temperature readings with high repeatability and excellent V-T curve consistency.
CONTACT US1. Product Overview
The CMT-64 Silicon Diode Cryogenic Thermometer is engineered with specially designed silicon diodes optimized for low-temperature measurement. Compared with conventional silicon diodes, the CMT-64 provides excellent repeatability, low variability, and higher resistance changes at cryogenic temperatures, making measurements easier and more reliable.
All CMT-64 diodes follow a well-defined Voltage-Temperature (V-T) curve, ensuring better interchangeability across sensors.
2. Key Features
- Low excitation current minimizes self-heating effects
- Standard V-T curve compliance ensures excellent sensor interchangeability
- Multiple package options: durable, resistant to thermal shocks, and easy to install
3. Technical Specifications
- Lead length: 1 m, 4-wire configuration
- Lead material: Phosphor bronze cryogenic wire (four-color)
- Standard curve: CMT-64 standard curve
- Temperature range: 4 K to 325 K
- Recommended excitation current: 10 µA ±0.1%
- Maximum reverse voltage: 75 V
- Maximum current before damage: 100 mA (continuous), 500 mA (instantaneous)
- Power dissipation at recommended excitation: 20 µW @ 4.2 K 10 µW @ 77 K 6 µW @ 300 K
- Radiation influence: Recommended only in low-radiation environments
- Magnetic field influence: Not recommended in magnetic field environments
- Short-term stability: 1 mK @ 4.2 K 5 mK @ 77 K 3 mK @ 273 K (tested for 1 minute in liquid helium, liquid nitrogen, and ice-water mixture)
- Repeatability: ±10 mK @ 77 K (tested through 100 thermal cycles between 300 K and 77 K)
Available Packages
- MS: Metric screw mount
- BO: Bobbin package
- PI: Tube package
4. Testable Samples & Applications
- Cryogenic material research
- Superconductivity studies
- Low-temperature detector calibration
- General laboratory cryogenic monitoring
5. System Configuration
- Main sensor: CMT-64 Silicon Diode Cryogenic Thermometer
- Standard lead length: 1 m, 4-wire configuration
- Multiple package types available (MS, BO, PI)
6. Ordering Information
- Model: CMT-64 Silicon Diode Cryogenic Thermometer
- Package options: MS, BO, PI
- Standard lead: 1 m, phosphor bronze wire
- Calibration: Refer to CMT-64 standard curve
7. Why Choose Cryomagtech
- Proven expertise in cryogenic and magnetic measurement technologies
- High precision and stability across cryogenic temperature ranges
- Durable sensor design with multiple packaging options
- Trusted by research institutes and laboratories worldwide
8. Contact & Inquiry
For inquiries, customization, or technical support, please contact:
Cryomagtech
🌐 Website: www.cryomagtech.com
📧 Email: edaystore@outlook.com
Appendix: Selection Parameters
Temperature Range & Accuracy
| Calibration Type | Temperature Range | Standard Range | Accuracy |
|---|---|---|---|
| A | 2 K – 100 K / 100 K – 325 K | N/A | ±0.25 K / ±0.5 K |
| B | 2 K – 325 K | N/A | ±0.5 K |
| C | 2 K – 325 K | N/A | ±1 K |
| 1.4L | 1.4 K – 325 K | 1.4 K – 325 K | ±0.1 K |
| 1.4H | 1.4 K – 500 K | 1.4 K – 500 K | ±0.1 K |
| 4L | 4.2 K – 325 K | 4 K – 325 K | ±0.1 K |
| 4H | 4.2 K – 500 K | 4 K – 500 K | ±0.1 K |
| 70L | 70 K – 325 K | 70 K – 325 K | ±0.1 K |
| 70H | 70 K – 500 K | 70 K – 500 K | ±0.1 K |
Accuracy definition: Temperature accuracy = √(Calibration uncertainty² + Repeatability²)