Product Features - Siemens SITRANS TW 7NG3242 Betriebsanleitung

Technical Description
1 Transmitter
2 Field housing (if required, commercially available)
*) Only in connection with the prescribed protection requirements for the sensor
Figure 1
1.2

Product features

• Transmitters in four-wire technique with HART interface
•
Housing for mounting on 35 mm DIN rail or 32 mm G-rail.
• Screw-type connector
• Electrical isolation of all circuits
• Output signal 0/4 ... 20 mA or 0/2 ... 10 V
• Available with power supply units U
• Explosion protection [ Ex ia ] or [ Ex ib ] for 7NG3242-1 for measuring process
variables in the Ex area with the appropriate device version (gas and dust Ex)
• Temperature linear characteristic for all temperature sensors
• User-specific characteristics
• Automatic correction of zero point and span
• Monitoring of the sensor and its supply cable for break and short-circuit
•
Sensor error and / or limit value can be output by an optional sensor errorlimit
value alarm (alarm relay)
• Hardware write protection for HART communication
82
Control station
Areas of application of the transmitters in Ex and non-Ex versions
Field
230 V or U 24 V
H H
Zone Zone 0
SITRANS TW
A5E00054075-05