Siemens 7NG3212 / TH300 SITRANS Temperature Transmitter

About this product

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 For quotation, send the complete order code, quantity and operating conditions. Specifications and available options depend on the ordered configuration.