Product Description

1. NTC thermistor R25: 50KΩ±1%，Beta value B(25/50): 3950K
2. Stainless steel case, 304, φ2.7×23mm
3. O-ring: φ2.5×φ6.1×1.8mm
4. Potting and Sealing Epoxy Resin, black color.
5. Screw nut, brass, dimension M8×1.25+S8×9.5
6. Wire Cable UL2651 26AWG 300V 105℃, black.
7. Connector: SXH-001T-P0.6/XHP-2 white color, can also be deleted with bared end.

 

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

• Immersion NTC thermistor temperature sensor, can be placed directly in the water flow, in direct drinking water contact, to detect water temperature.
• Fast time response for water liquid immersion application.
• Reduced thermal gradient, due to the use of small tip dimension.
• Hex head Screw threaded mounting sensor.
• Rugged, resistant to heat shock and moisture.

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

 

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