1-wire interface for 4 wire RTD (with relay)
The new RTD Sensor line offers an innovative and highly accurate way to monitor and control temperature throughout a wider temperature range than previously possible with 1-Wire networks. Each variation of the RTD sensor line includes a highly accurate RTD input, a latching relay, a LED, conditional search support and a pass-through 1-Wire connection. These features combine to offer a flexible system for monitoring and controlling numerous data points throughout a 1-Wire network in an efficient manner. The conditional search support allows a host adapter to quickly identify whether alarm for numerous parameters have been met. The latching relay and LED are configurable to behave in a variety of ways when alarms:
- Activates when an alarm becomes active and deactivates when the alarm is cleared
- Activates when within alarm parameters and deactivates when in normal range
- Independently controlled
The nearly instant automated responses made by the relay and LED allow appropriate responses (activate fan/alarm siren/etc) to occur before the monitoring application is aware of the alarm. The RTD sensor line has been designed to simplify the reading and controlling process. Any general purpose 1-Wire host adapter is able to read the RTD Sensors.
Selecting a RTD
- Must Be a 4 Wire RTD
- European Standard (aka DIN or IEC 60751) at 100 ohms
- Suitable sensor from Omega: http://www.omega.com/ppt/pptsc.asp?ref=HSRTD
Full datasheet and manual can be found here.