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| # Thermally sensitive system – receive alerts when temperature enters or leaves pre-defined value. | | # Thermally sensitive system – receive alerts when temperature enters or leaves pre-defined value. |
| # Consumer products – be assured that goods which you are delivering will maintain high quality. | | # Consumer products – be assured that goods which you are delivering will maintain high quality. |
| + | |
| + | '''Description''' |
| + | The DS18S20 digital thermometer provides 9-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18S20 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 DS18S20 can derive power directly from the data line (“parasite power”), eliminating the need for an external power supply. Each DS18S20 has a unique 64-bit serial code, which allows multiple DS18S20s to function on the same 1-Wire bus. Thus, it is simple to use one microprocessor to control many DS18S20s 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. |
| + | |
| + | '''TTJ technical characteristics''' |
| + | * Unique 1-Wire® Interface Requires Only One Port Pin for Communication |
| + | * Each Device has a Unique 64-Bit Serial Code Stored in an On-Board ROM |
| + | * Multidrop Capability Simplifies Distributed Temperature Sensing Applications |
| + | * Requires No External Components |
| + | * Can Be Powered From Data Line. Power Supply Range is 3.0V to 5.5V |
| + | * Measures Temperatures from -55°C to +125°C (-67°F to +257°F) ±0.5°C Accuracy from -10°C to +85°C |
| + | * 9-Bit Thermometer Resolution |
| + | * Converts Temperature in 750ms (max) |
| + | * User-Definable Nonvolatile (NV) AlarmSettings |
| + | * Alarm Search Command Identifies and Addresses Devices Whose Temperature is Outside Programmed Limits (Temperature Alarm Condition) |
| + | * Applications Include Thermostatic Controls, Industrial Systems, Consumer Products, Thermometers, or Any Thermally Sensitive System |