供应Digital sensor DS18B20

DS18B20 Digital Thermometer Sensor
The DS18B20 Digital Thermometer provides 9 to 12–bit centigrade temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18B20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central microprocessor. It has an operating temperature range of –55°C to +125°C and is accurate to ±0.5°C over the range of –10°C to +85°C. In addition, the DS18B20 can derive power directly from the data line ("parasite power"), eliminating the need for an external power supply.
Each DS18B20 has a unique 64-bit serial CODe, which allows multiple DS18B20s to function on the same 1–wire bus; thus, it is simple to use one microprocessor to control many DS18B20s distributed over a large area. Applications that can benefit from this feature include HVAC environmental controls, temperature monitoring systems inside buildings, equipment or machinery, and process monitoring and control systems.

1: Applications
1.1 Requires No External Components
1.2 Can Be Powered from Data Line;
1.3 Power Supply Range is 3.0V to 5.5V
1.4 Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
±0.5°C Accuracy from -10°C to +85°C
1.5 Thermometer Resolution is User Selectable from 9 to 12 Bits
Converts Temperature to 12-Bit Digital Word in 750ms (Max)
User-Definable Nonvolatile (NV) Alarm Settings
1.6 Sensor: DS18B20
1.7 Probe: stainless steel tube Φ6, Length 50~200 mm.
1.8 Cable: 1~ 10 m. FEP shielded,
1.9 Brown: +Vcc
White: Output
Green: Gnd
1.10 Measuring range -55℃~125℃
1.11 Can be used in G1/2”~G1”, DN40~DN250 pipe line or
work with the instrument that installed in the small sPACe
1.12 Standard fitting no, M10X1, G1/2”

2: Model Section
Model Measuring Range Fitting cable length
DS18B20 -55~125 no 1.5~10 m
DS18B20A -55~125 M10X1 1.5~10m
DS18B20B -55~125 G1/2” 接线盒

3: 3：Connection
Cores: 3