| Model: | NTC 50K B3950 |
|---|---|
| Brand: | AMWEI |
| Origin: | Made In China |
| Category: | Electronics & Electricity / Transducer |
| Label: | Screw thread sensors , coffee maker NTC , water thermistor |
| Price: |
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|
| Min. Order: | 1000 pc |
| Last Online:29 Sep, 2024 |
Hex Threaded Water Probe Application
NTC thermistor temperature sensor probe for temperature measurement of liquid, water, air, etc. Typical application drinking water, water heater boilers, chiller system, water and oil tanks, industrial appliances, solar heating systems, etc.
Hex Threaded Water Probe Features
More details in https://amwei.com/hex-threaded-ntc-50k-ohm-beta-3950k-water-probe/
Hex Threaded Water Probe Electric Characteristics Data
Resistance at 25C R25: 50K ohm+/-1%,
Beta Value B(25/50): 3950K+/-1%
Dissipation Factor: 5 mw/℃ min.
Thermal Time Constant (in water): 7 seconds max.
Insulation resistance: 500VDC, 100 MΩ
Voltage withstanding: 1200VAC, 1mA, 2 seconds
Operating temperature range: -30 to +105C
Temperature measurement accuracy from -30 to +105C shall be within +/- 1.5C.
Resistance vs. Temperature RT Data
| Temperature
Centigrade |
Resistance
(KΩ) |
Temperature
Centigrade |
Resistance
(KΩ) |
Temperature
Centigrade |
Resistance
(KΩ) |
|---|---|---|---|---|---|
| -40C | 1682.8 KΩ | 15C | 78.581 KΩ | 70C | 8.766 KΩ |
| -35C | 1215.3 KΩ | 20C | 62.469 KΩ | 75C | 7.406 KΩ |
| -30C | 886.13 KΩ | 25C | 50.000 KΩ | 80C | 6.280 KΩ |
| -25C | 652.73 KΩ | 30C | 40.283 KΩ | 85C | 5.355 KΩ |
| -20C | 485.76 KΩ | 35C | 32.654 KΩ | 90C | 4.580 KΩ |
| -15C | 364.99 KΩ | 40C | 26.641 KΩ | 95C | 3.939 KΩ |
| -10C | 276.78 KΩ | 45C | 21.856 KΩ | 100C | 3.404 KΩ |
| -5C | 211.73 KΩ | 50C | 18.021 KΩ | 105C | 2.964 KΩ |
| 0C | 163.34 KΩ | 55C | 14.937 KΩ | 110C | 2.588 KΩ |
| 5C | 127.02 KΩ | 60C | 12.446 KΩ | 115C | 2.253 KΩ |
| 10C | 99.538 KΩ | 65C | 10.421 KΩ | 120C | 1.953 KΩ |
Hex Threaded Water Probe Mechanical Performance Test
| Test Item | Test Condition | Performance Request |
|---|---|---|
| Lead Wire Tensile Pulling | Applying force 9.8N（1KGF）along lead wire direction, for 1 minute. | No cracks in the resin and wire bonding, No visible damage |
| Falling down | Falling down from 1 meter high to 10mm thick oak wooden board, 5 times. | No cracks in the resin and wire bonding, No visible damage |
Hex Threaded Water Probe Reliability Data
| Test Item | Standard | Test Conditions | ΔR25/R25 (typical) | Remarks |
|---|---|---|---|---|
| Low temperature storage | IEC 60068-2-1 | Storage at low category temperature. Temperature: -30 oC Time: 1000 hours | ≤3% | No visible damage |
| Storage in dry heat | IEC 60068-2-2 | Storage at upper category temperature. Temperature: 100 oC Time: 1000 hours | ≤3% | No visible damage |
| Storage in damp heat, steady state (Humidity test) | IEC 60068-2-3 | Temperature: 40oC,
Humidity:90%-95% RH, Duration:1000 hours |
≤3% | No visible damage |
| Rapid temperature cycling | IEC 60068-2-14 | 1. -30C/30 minutes
2. 30C/5minutes 3. 100C/30 minutes 4. 30C/5minutes. Number of cycles: 5 Cycles |
≤3% | No visible damage |
