It is important to monitor the temperature in separate areas in a device or in a manufacturing system and offer a prevalent warning whenever these areas reach their respective boundaries.
Having one electronic device deployed for each area will be costly and unwieldy. Instead, having one electronic device intended to detect temperatures in distinct areas is desirable, compare the preset limits and give out a common alarm. Temperature scanners is used for such purposes.
What is temperature scanner?
A Temperature Scanner is a device measuring more than one or multi-channel temperature points. The scanner is designed to continually monitor the temperature and provide an audio visual alarm when the boundaries are crossed.
In fact, it is a multi-channel tool that monitors and shows signals from each channel up to the last channel, then moves to the first channel and repeat the process cyclic.
Temperature Scanners have alarm / control relay inputs, serial port for connecting to SCADA / DCS / PLC.
The Temperature Scanner is a microprocessor-based device that recognizes for each entry the thermocouple / RTD form. It is possible to scan each channel manually or automatically and to display active areas.
The instrument is programmable for J, K, T or E thermocouple input types, degrees ° C or ° F, and scan rate between 2 to 60 seconds.
Application of Temperature scanners:
- Monitoring temperature in substation
- Protection of various devices
- Multi Point On/Off control
- Support efficient transformer cooling control
- In case any channel of PT100 sensor is open/short, unit gives fault indication.
- Pipeline Heat Tracing circuit control
- As an Serial/Ethernet/Profibus RTU