Customizable High Resistance Mineral Insulated RTD Sensor Cable
An RTD (Resistance Temperature Detector) is a precision sensor whose electrical resistance changes predictably with temperature variations. As temperature increases, the sensor's resistance rises proportionally. This well-defined resistance-temperature relationship ensures consistent, repeatable performance over time. RTDs are passive devices that require external electronic instrumentation to measure resistance by applying a small electrical current (typically 1 mA or less, with a maximum of 5 mA to prevent self-heating) and monitoring the resulting voltage output.
Product Specifications
- Product Name: Mineral Insulated RTD Cable
- Type: Pt100
- Conductor Material: Nickel (Ni)
- Insulator: 99.6% High Purity Magnesium Oxide (MgO)
- Core Configuration: 3, 4, 6, or 8 cores
- Sheath Material: SS321 (SS304), SS316
- Diameter Range: 3.0mm to 12.7mm
- Application: Connection with thermocouples and instrumentation equipment
- Origin: Zhejiang, China
- Eco-friendly: Yes
- Minimum Order Quantity: 100 meters
- Certification: ISO
- Sample Availability: All types available from stock
- Trade Terms: FOB, EXW, CIF, CFR
- Payment Options: T/T, Western Union, L/C
Nominal Dimensions & Specifications
| Diameter (mm) |
Wall Thickness |
Conductor Diameter |
MgO Purity |
Insulated Resistance |
| 0.5±0.025 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/75V |
| 1.0±0.025 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/75V |
| 1.5±0.025 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/75V |
| 1.6±0.025 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/75V |
| 2.0±0.025 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/75V |
| 3.0±0.030 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
| 4.0±0.045 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
| 4.8±0.045 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
| 5.0±0.045 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
| 6.0±0.060 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
| 6.4±0.060 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
| 8.0±0.080 |
≥10%D |
≥15%D |
≥99.4% |
Room temp. >100MΩ/500V 500℃ >5MΩ/500V |
Weight Specifications
| Type |
Diameter (mm) |
SS304/SS316 Weight (kg/m) |
| 3 Core Ni |
3.0 |
0.045 |
| 3.2 |
0.051 |
| 4.0 |
0.075 |
| 4.8 |
0.108 |
| 5.0 |
0.116 |
| 6.0 |
0.180 |
| 6.4 |
0.203 |
| 8.0 |
0.297 |
| 4 Core Ni |
3.0 |
0.039 |
| 3.2 |
0.046 |
| 4.0 |
0.074 |
| 4.8 |
0.105 |
| 5.0 |
0.113 |
| 6.0 |
0.164 |
| 6.4 |
0.204 |
| 8.0 |
0.363 |
| 6 Core Ni |
3.0 |
0.040 |
| 3.2 |
0.046 |
| 4.0 |
0.074 |
| 4.8 |
0.107 |
| 5.0 |
0.115 |
| 6.0 |
0.163 |
| 6.4 |
0.191 |
| 8.0 |
0.301 |
Understanding RTD Sensors
RTD stands for Resistance Temperature Detector, also known as a resistance thermometer. These precision sensors measure temperature by utilizing the predictable relationship between electrical resistance and temperature in conductive materials. Typically constructed from fine platinum, nickel, or copper wire wound around a ceramic or glass core, RTD sensors provide accurate and reliable temperature measurements across various industrial applications.
Industrial Applications
RTD sensors serve critical temperature monitoring functions across multiple industries:
- Automotive: Engine temperature monitoring, oil level sensing, intake air temperature measurement
- Communication & Instrumentation: Amplifier temperature sensing, transistor gain stabilization
- Industrial Sectors: Power electronics, computer systems, consumer electronics, food processing, medical electronics, military, and aerospace applications
Product Gallery
Quality Assurance & Company Information
Quality Inspection Process
Every coil of cable undergoes 100% testing to ensure consistent quality and reliability for our customers.
Industry Presence
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Ordering Process
- Receive accurate quotation based on your requirements
- Confirm pricing, trade terms, lead time, and payment conditions
- LEADKIN sales team provides Proforma Invoice with official company seal
- Customer arranges deposit payment and provides bank slip
- Production updates with photos showing your products in manufacturing line
- Completion notification with mass production photos
- Customer pays balance, LEADKIN ships goods and provides tracking information
- Order completion upon satisfactory receipt of goods
- Customer feedback on quality, service, and market performance