Loop-powered Indicating Temperature Transmitter/Controller (TST300) is a
compact system which has incorporated the latest digital technology to
provide accurate and reproducible conversion of 2 or 3-wire RTD or
thermocouple signals to industry standard 4-20 mA output and to indicate the
process temperature on its large 4-digit display. Moreover, the TST300 with
its 2 alarm outputs can be used as an ON/OFF controller to trigger external
relays. The set-point, hysteresis, direction of the alarms and their time
delay can be programmed by the user.
High accuracy and drift-free
linearization coupled with digital filters are designed to produce stable
readings with good accuracy.
Configuration of the TST300 is
easy. The temperature transmitter is configured with the aid of either a
calibrator or an RTD/Thermocouple simulator. The display and contact
parameters such as, set-points, hysteresis, direction and delay time, and
setting the span of the indicator to indicate the desired engineering unit
are programmed via a two-key hidden keyboard.
The TST300 is
waterproof (IP65), and when coupled with thermocouple sensors, galvanically
isolates the input signal from the output. The unit can be mounted straight
to the RTD or thermocouple sensor, or be wall mounted and connected to the
temperature probe via a wire. Optionally, the instrument can be ordered
with DIN rail clamp for rail mounting.