Instruction manual

SITRANS TW

82 A5E00054075-05

Technical Description

Figure 1 Areas of application of the transmitters in Ex and non-Ex versions

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

230 V or U

24 V

• 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

Control station

Field

Zone Zone 0

1 Transmitter

2 Field housing (if required, commercially available)

*) Only in connection with the prescribed protection requirements for the sensor