WATERPROOF NTC 10K 1% 3950 THERMISTOR ACCURACY TEMPERATURE SENSOR CABLE PROBE FOR W1209 W1401
Features
Stainless steel sheath and waterproof
Measurement range: -20 to 105 °C
Length of wire: 1 meter
Size of probe: 5 x 25 mm
Output: 2 wires
Type: NTC 10k±1% 3950
measure environmental temperatures using For ADC and this 10k NTC LINK
Resistance to temperature conversion table LINK
B-constant : 3380K -/+ 1%
Typical Dissipation Constant 5mW/ °C
Probe insulation: >100MOhm
Peak Voltage sustain time: 2 seconds, AC1800V 1mA 2 seconds
Stress sustain: 9.8N (1kgF) for 1 minute no deformation
Package Included
1 meter NTC Thermistor Temperature Sensor Waterproof Probe Cable
How to use NTC Thermistor to measure Temperature?
We need to convert the resistance value measurement to voltage input value which is within 0 to 5V so that it is measurable by Arduino Analog Pin.
In Arduino UNO board, there are 6 Analog Pins (A0 – A5) available for NTC thermistor temperature measurement.
Since the thermistor sensor acts as a resistor, the 2-wire sensor does not have polarity, you can connect any pin to Analog Pin and another one to the Ground Pin.
However, in order to convert from resistance to voltage, the Voltage Divider Method is used.
The voltage divider consists of two resistors connected in series as shown in the diagram below.
All you need is just 2 resistors with different resistance values, and a 5V voltage supply.
The resistance can be reversed calculate since analog value can be read by Arduino.
You can put any R1 and R2 resistor values but recommend to stay below 50k ohm in total.
In this example, we put R1 as 10k ohm resistor and R2 will be the rating of the thermistor which we choose 5k ohm rating at 25 degree C. R2 value is the value that will keep changing.
Not to confuse with the R1 & R2 value on previous calculation which is based on voltage divider method.
All the values in thermistor equation are referring to the thermistor itself.
The value R1 and T1 refer to the thermistor standard rating (resistance at 25 degree celcius) while R2 is value from previous calculation and the T2 is the actual temperature that we need to find.
Hardware Connection
Arduino with NTC Thermistor Wiring Diagram
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