The waterproof 4.7 kΩ NTC thermistor probe is used in experiments to study how the resistance of a negative temperature coefficient semiconducting thermistor depends on temperature. The probe is immersed in a water bath and the current passing through it is measured for known voltage.
Probe: B57891-M472-K
Resistance at 25°C: 4.7 kΩ (±10%)
Coefficient B25/100: 3980 K (±3%)
Maximum temperature: 120°C
Maximum power: 0.2 W
Maximum voltage: 30 V DC
Measurement category: CAT I
Connectors: 4 mm safety plugs
Total length: approx. 0.75 m
Weight: approx. 40 g
![DC Power Supply 1.5-15 V, 1.5 A (230 V, 50/60 Hz), 1003560 [U8521121-230], Power Supplies](/thumblibrary/U8521121-230/U8521121-230_01_140_140_DC-Power-Supply-15-15-V-15-A-230-V-5060-Hz.jpg)
![Digital Multimeter E, 1018832 [U8531051], Hand-held Digital Measuring Instruments](/thumblibrary/U8531051/U8531051_01_140_140_Digital-Multimeter-E.jpg)
![Safety Experiment Leads, 75 cm, 2.5 mm², black, (2 pcs), 1002849 [U13812], Experiment Leads and Cables](/thumblibrary/U13812/U13812_01_140_140_Safety-Experiment-Leads-75-cm-25-mm-black-2-pcs.jpg)
![Safety Experiment Leads, 75 cm, 2.5 mm², blue, red, (2 pcs), 1017718 [U13816], Experiment Leads and Cables](/thumblibrary/U13816/U13816_01_140_140_Safety-Experiment-Leads-75-cm-25-mm-blue-red-2-pcs.jpg)
![Set of 10 Beakers,600 ml, Low Form, 1002872 [U14210], Glassware](/thumblibrary/U14210/U14210_01_140_140_Set-of-10-Beakers-600-ml-Low-Form.jpg)
![Tube Thermometer, Graduated -10 – 110°C, 1002879 [U14295], Thermometers](/thumblibrary/U14295/U14295_01_140_140_Tube-Thermometer-Graduated-10-110-C.jpg)
![Holder for Components, 1008524 [U8495610], Circuits](/thumblibrary/U8495610/U8495610_01_140_140_Holder-for-Components.jpg)
![PTC Thermistor Probe, 100 Ω, 1021435 [U8557840], Circuits](/_images/ProductImageComingSoon/140en.gif)
![Function generator 10 µHz…3 MHz, 1020912 [U11836], Function Generators](/thumblibrary/U11836/U11836_01_140_140_Function-generator-10-µHz-3-MHz.jpg)
![Set of 10 Crocodile Clips 4 mm, Not Insulated, 1019219 [U13821], Experiment Leads and Cables](/thumblibrary/U13821/U13821_01_140_140_Set-of-10-Crocodile-Clips-4-mm-Not-Insulated.jpg)
![Pulley with Table Clamp, 1003221 [U30025], Lever and Pulley - Accessory](/thumblibrary/U30025/U30025_01_140_140_Pulley-with-Table-Clamp.jpg)
![High-Pressure Mercury Vapour Lamp, 1000852 [U8473155], Spectrum Tubes and Spectrum Lamps](/thumblibrary/U8473155/U8473155_01_140_140_High-Pressure-Mercury-Vapour-Lamp.jpg)
![Resistance Apparatus, 1009949 [U8492030], Circuits](/thumblibrary/U8492030/U8492030_01_140_140_Resistance-Apparatus.jpg)
![Lamp Socket E14 on Acrylic Base, 1000947 [U8495320], Circuits](/thumblibrary/U8495320/U8495320_01_140_140_Lamp-Socket-E14-on-Acrylic-Base.jpg)
![Fishing Line, 10 m, 4009036 [U8557460], Cord](/thumblibrary/U8557460/U8557460_01_140_140_Fishing-Line-10-m.jpg)
![Jet Nozzle (Flow Laminator) -
Generator of laminar air flows, 1000758 [U8404250], Aerodynamics](/thumblibrary/U8404250/U8404250_01_140_140_Jet-Nozzle-Flow-Laminator-Generator-of-laminar-air-flows.jpg)
![Horn Loudspeaker, 1000811 [U8432680], Sound](/thumblibrary/U8432680/U8432680_01_140_140_Horn-Loudspeaker.jpg)
![Kundts Tube, 1000814 [U8432845], Sound](/thumblibrary/U8432845/U8432845_01_140_140_Kundts-Tube.jpg)
![Magnetic Field Lines Device, Three Dimensional, 1009765 [U8491925], Magnetic Fields](/thumblibrary/U8491925/U8491925_01_140_140_Magnetic-Field-Lines-Device-Three-Dimensional.jpg)
![Geared Motor with Pulley, 1017735 [U8498304], Experiment Kits - Higher Level](/thumblibrary/U8498304/U8498304_01_140_140_Geared-Motor-with-Pulley.jpg)
![Iceland spar / calcite crystal -
for easy demonstration of birefringence, 5006663 [U8500944], Prisms](/thumblibrary/U8500944/U8500944_01_140_140_Iceland-spar-calcite-crystal-for-easy-demonstration-of-birefringence.jpg)
![Motor, 12 V DC, 1001041 [U8552330], Mechanical Waves](/thumblibrary/U8552330/U8552330_01_140_140_Motor-12-V-DC.jpg)