Function

The SITRANS TH300 is configured over HART. This can be done  using a handheld communicator or even more  conveniently with  a HART modem and the SIMATIC PDM parameterization software. The configuration data are then  permanently stored in the  non-volatile memory (EEPROM). Once the sensors and power supply have been correctly  connected, the transmitter outputs a temperature-linear output signal and the diagnostics LED displays a green light.  In the case  of a sensor short-circuit, the LED flashes red, an internal device  fault is indicated by a  steady red light. The test socket can be used to connect an ammeter at any time  for monitoring purposes and  plausibility checks. The output current can be read without any interruption, or even without opening the current  loop.

Benefits

• Compact design • Flexible mounting and center hole allow you to select your preferred type of installation •  Electrically isolated • Test sockets for multimeters • Diagnostics LED (green/red) • Sensor monitoring  open  circuits and short-circuits • Self-monitoring • Configuration status stored in EEPROM • SIL2 (with order code C20),  SIL2/3 (with C23) • Expanded diagnostic functions, such as slave pointer, operating hours counter, etc. • Special  characteristic • Electromagnetic compatibility to EN 61326 and NE21

Application

SITRANS TH300 transmitters can be used in all industrial sectors. Due to their compact size they can be installed in  the connection head type B (DIN 43729) or larger. The following sensors/signal sources can be connected over their  universal input  module: • Resistance thermometers (2, 3 or 4-wire system) • Thermocouples • Resistance-based  sensors and DC voltage sources The output signal is a direct current from 4 to 20 mA in accordance with the sensor  characteristic, superimposed by the digital HART signal. Transmitters of the "intrinsically safe" type of protection  can be installed within potentially explosive atmospheres. The devices  comply with the Directive 94/9/EC (ATEX),  as well as FM and  CSA regulations.

Details