DS18B20+PAR数据手册传感器变送器的温度传感器-模拟数字输出规格书PDF

描述 Description

The DS18B20-PAR 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-PAR does not need an external power supply because it derives power directly from the data line (\"parasite power\"). The DS18B20-PAR communicates over a 1-Wire® bus, which 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 +100°C and is accurate to ±0.5°C over a range of -10°C to +85°C.
Each DS18B20-PAR has a unique 64-bit identification code, which allows multiple DS18B20-PARs to function on the same 1-wire bus; thus, it is simple to use one microprocessor to control many DS18B20-PARs 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.

特性 Features

• Unique 1-Wire Interface Requires Only One Port Pin for Communication
• Derives Power from Data Line (\"Parasite Power\")—Does Not Need a Local Power Supply
• Multi-Drop Capability Simplifies Distributed Temperature Sensing Applications
• Requires no External Components
• ±0.5°C Accuracy from -10°C to +85°C
• Measures Temperatures from -55°C to +100°C (-67°F to +212°F)
• Thermometer Resolution is User-Selectable from 9 to 12 Bits
• Converts Temperature to 12-Bit Digital Word in 750ms (max.)
• User-Definable Non-Volatile Temperature Alarm Settings
• Alarm Search Command Identifies and Addresses Devices Whose Temperature is Outside of Programmed Limits (Temperature Alarm Condition)
• Software compatible with the DS1822-PAR
• Ideal for Use in Remote Sensing Applications (e.g., Temperature Probes) That do not Have a Local Power Source

应用 Application

• 远端检测应用

简介

DS18B20+PAR属于传感器变送器的温度传感器-模拟数字输出。由制造生产的DS18B20+PAR温度传感器 - 模拟和数字输出模拟和数字输出温度传感器可用于测量环境热能量。特征包括传感器类型、本地感测温度、远程感测温度、输出类型、电源电压和分辨率。传感器类型为模拟本地/远程/红外、模拟数字、本地/远程、数字本地/远程/红外或内部，感应温度范围为 -55°C 至 200°C。