Product Overview
The CWF series NTC Thermistor Probes from Cantherm are precision sensors designed for accurate temperature measurement and control across a wide range of applications. These probes feature a high-reliability NTC thermistor insulated with heat-conductive, water-resistant materials and potted into various probe bodies for diverse installation needs. They offer excellent tolerance, interchangeability, long-term stability, and fast response times. Available in five basic enclosure styles, including ethoxyline dipped, metal housing, plastic body, sheet metal attachment fixtures, and custom probes, the CWF series is suitable for demanding environments and custom sensing requirements.
Product Attributes
- Brand: CWF
- Manufacturer: Cantherm (Division of Microtherm)
- Origin: Canada
- Lead Material: PVC
- Housing Materials: Ethoxyline resin, Aluminum, Copper, Stainless Steel, Plastic, Sheet Metal
Technical Specifications
General Characteristics:
| Specification | Value |
|---|---|
| Dissipation Coefficient (mW/C) | 2.2 |
| Thermal Time Constant (S) | 70 |
| Operating Temperature Range (C) | -55 to 125 |
| Yearly Drift | 1% |
| Temperature Coefficient of Resistance (%/C) | - (2~5%) |
Package Options & Dimensions:
| Package Option | Description | Dimensions (mm) - Code A | Dimensions (mm) - Code B | Dimensions (mm) - Code C | Dimensions (mm) - Code D (Max) | Dimensions (mm) - L1 (Max) | Dimensions (mm) - L2 |
|---|---|---|---|---|---|---|---|
| 1 - Dipped ethoxyline resin (ex. 1A) | Moisture resistant, good insulation, high reliability, small time constant, quick responses. | 4 | 16 | Customer Specified | 4 | 16 | Customer Specified |
| 2 - Aluminum, copper, or stainless steel housing (ex. 2A) | High resistance to thermal shock, moisture resistant, strong and secure structure, high dissipation coefficient. | 5 | 16 | Customer Specified | 5 | 16 | Customer Specified |
| 3 - Plastic body (ex. 3AA) | Good dimensional tolerances, good heat resistance and moisture protection, high voltage resistance. | 5 | 25 | Customer Specified | 5 | 25 | Customer Specified |
| 3 - Plastic body (ex. 3B) | Good dimensional tolerances, good heat resistance and moisture protection, high voltage resistance. | 4 | 35 | Customer Specified | 4 | 35 | Customer Specified |
| 4 - Sheet metal attachment fixtures (ex. 4B) | Wide variety of fixtures, suitable for most applications. | 6 | 20 | Customer Specified | 6 | 20 | Customer Specified |
| 5 - Special probes (ex. 5B) | Small time constant, fast response, flexible and secure. | 6 | 25 | Customer Specified | 6 | 25 | Customer Specified |
Part Numbering Example: CWF 103 J 3380
- CWF: Series
- 103: Rated Resistance at 25C (10K)
- J: Precision Symbol (5%)
- 3380: B value (25/50)
Available Resistance & B Values:
| Part No. (Base) | Rated Resistance R25 | B Value (25/50C) | Precision Symbol Allowable |
|---|---|---|---|
| CWF[][][]3100 | 0.1-20 | 3100 | 1, 2, 3, 5 |
| CWF[][][]3270 | 0.2-20 | 3270 | 1, 2, 3, 5 |
| CWF[][][]3380 | 0.5-50 | 3380 | 1, 2, 3, 5 |
| CWF[][][]3470 | 0.5-50 | 3470 | 1, 2, 3, 5 |
| CWF[][][]3600 | 1-100 | 3600 | 1, 2, 3, 5 |
| CWF[][][]3950 | 5-100 | 3950 | 1, 2, 3, 5 |
| CWF[][][]4000 | 5-100 | 4000 | 1, 2, 3, 5 |
| CWF[][][]4050 | 5-200 | 4050 | 1, 2, 3, 5 |
| CWF[][][]4150 | 10-250 | 4150 | 1, 2, 3, 5 |
| CWF[][][]4300 | 20-1000 | 4300 | 1, 2, 3, 5 |
| CWF[][][]4500 | 10-1000 | 4500 | 1, 2, 3, 5 |
Applications:
- Heating, ventilation & air conditioning
- Temperature regulation and measurement
- Automotive electronics
- Water heaters
- Household appliances (refrigerators, water coolers, dishwashers, etc.)
- Refrigeration
- Drinking fountains
- Fan control
- Industrial temperature controllers
- Electronic thermometers
2411220418_Cantherm-CWF3AA104G4150_C17660749.pdf
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