A temperature probe is a type of temperature sensor. There are many kinds of temperature sensor probes available which we can use for different applications in various industries. Some temperature probes measure temperature by being placed onto the surface. While some need to be inserted or soaked in liquid to measure the temperature. In this article, we review the DS18B20 Temperature Sensor Probe.
An Overview
DS18B20 Waterproof Temperature Sensor is a one-wire digital sensor that can reach digital data resolution. This waterproof probe permits the sensor to measure or estimate the temperature underwater. A pull-up resistor is included to obtain stable data from the data line.
Features and Specifications of DS18B20
Features
- Temperature sensor chip
- Stainless steel tube 6mm diameter by 30mm long
- Cable is 36″ long / 91cm, 4mm diameter
- Uses 1-Wire interface- requires only one digital pin for communication
- Unique 64 bit ID burned into chip
- Multiple sensors can share one pin
Specifications
- Stainless steel shell (6 * 45 mm)
- lead length 100 mm (shielding wire) use stability
- 3.0 V-5.5 V power supply
- Without the external components, the unique single bus.
- Usable temperature range: -55 to 125°C (-67°F to +257°F)
- 9 to 12 bit selectable resolution
- ±0.5°C Accuracy from -10°C to +85°C
- Temperature-limit alarm system
- Query time is less than 750ms
Pinouts of DS18B20 Probe
| Wire Colour | Pin Name | Description |
| Black | GND | Ground Pin |
| Yellow | DQ | 1-wire data bus. Needs to connect the digital pin of the microcontroller. |
| Red | VDD | Power supply pin. Requires voltage between 3.3V to 5V. |
Applications of DS18B20 Probe
Temperature Measurement Devices
The DS18B20 Digital Temperature Probe can provide nine to twelve-bit temperature readings that show the temperature of any device. This system takes the information from the DS18B20 sensor through 1-
Wire interface. Reading and performing temperature conversions can be determined from the data line itself, no need for an external power source.
Liquid Temperature Measurement
A DS18B20 sensor for high accuracy applications. The probe is waterproof, therefore the waterproof sensor helps to measure the temperature f liquids with good accuracy. For example, it can measure the temperature like water, coffee, chemicals, etc.
