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PT100 / DS18B20 Temperature Sensor Stainless Steel Probe 6x50mm / 6x30mm (2-Pack)
PT100 / DS18B20 Temperature Sensor Stainless Steel Probe 6x50mm / 6x30mm (2-Pack)
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PT100 / DS18B20 Temperature Sensor with Stainless Steel Protective Probe (2-Pack)
This listing offers waterproof temperature sensors encased in a stainless steel protective sleeve for reliable measurement in liquids, soil, and harsh environments. Select either PT100 RTD (analog, high accuracy) or DS18B20 (digital 1-Wire, Arduino-ready) in 6x50mm or 6x30mm probe sizes.
Variant Comparison
| Feature | PT100 RTD | DS18B20 Digital |
|---|---|---|
| Output Type | Analog resistance (100 ohm at 0C) | Digital 1-Wire protocol |
| Temperature Range | -200C to +850C | -55C to +125C |
| Accuracy | +/-0.1C (Class A) | +/-0.5C (0C to +85C) |
| Interface | Requires RTD amplifier (MAX31865) | Direct to MCU (1 GPIO pin) |
| Best For | Industrial, high-accuracy measurement | Arduino, DIY, waterproof sensing |
Common Specifications
| Parameter | Value |
|---|---|
| Probe Material | 304 Stainless Steel |
| Probe Diameter | 6mm |
| Probe Length | 50mm or 30mm (select variant) |
| Cable Length | ~1m (varies by listing) |
| Waterproof Rating | IP67 (submersible) |
| Quantity | 2 pieces |
Why Choose Stainless Steel Probe?
- IP67 Waterproof - Fully submersible for liquid temperature measurement
- 304 Stainless Steel - Corrosion-resistant for water, oil, and mild chemical environments
- Compact Probe - 6mm diameter fits standard thermowell and probe fittings
- Flexible Cable - ~1m cable for remote installation
- Pack of 2 - Spare included for redundancy or dual-point measurement
Typical Applications
- Aquarium and fish tank water temperature monitoring
- Sous vide cooking temperature control
- Industrial process liquid temperature measurement
- Soil temperature monitoring for agriculture
- 3D printer heated bed temperature sensing (DS18B20)
- HVAC duct and pipe temperature measurement
Arduino Setup (DS18B20)
Connect red wire to 5V, black to GND, yellow/white to digital pin with 4.7k ohm pull-up resistor to 5V. Install OneWire and DallasTemperature libraries.
sensors.requestTemperatures(); float tempC = sensors.getTempCByIndex(0);
PT100 Setup
Use MAX31865 RTD amplifier module for SPI interface to Arduino. Supports 2-wire, 3-wire, and 4-wire PT100 connections for different accuracy levels.
FAQ
Q: Can DS18B20 probe be permanently submerged in water? Yes - the stainless steel probe is IP67 rated for continuous submersion. Ensure the cable entry point is also sealed.
Q: Which is more accurate, PT100 or DS18B20? PT100 Class A is more accurate (+/-0.1C vs +/-0.5C) but requires an RTD amplifier. DS18B20 is simpler to interface with Arduino and sufficient for most DIY applications.
Package Contents
- 2x Temperature Sensor with Stainless Steel Probe (PT100 or DS18B20, per selected variant)
