SIMENS Field Transmitter SITRANS TF280, WirelessHART

SITRANS TF280 for flexible and cost-effective temperature measurements

  • Supports the WirelessHART standard (HART V 7.1)
  • Very high security level for wireless data transmission
  • Built-in local user interface (LUI) with 3-button operation
  • Optimum display and readability using graphics display (104 x 80 pixels) with integrated background lighting
  • Stand-by (deep sleep phase) on device can be turned on and off with a push of a button
  • Battery power supply
  • Battery service live up to 5 years
  • Extend battery service life with HART modem interface which can be shut off
  • Optimized power consumption through new design, and increase in battery service life
  • Simple configuration thanks to SIMATIC PDM
  • Housing meets IP65 degree of protection
  • Supports all Pt100 sensors as per IEC 751/DIN EN 60751
SITRANS TF280

The SITRANS TF280 is a WirelessHART temperature transmitter that provides all measured process values as well as diagnostic information, parameters and functions via radio. The device is powered by an internal battery and designed for ultra low power consumption. Its compact and rugged design makes it specially suitable for direct mounting on tanks and pipes in remote parts of plants, and on moving or rotatingequipment for process monitoring or asset management applications.

Benefits

The SITRANS TF280 is a temperature transmitter that features Wireless HART as the standard communication interface.

Also available is a wired interface to connect a HART modem:

  • Flexible temperature measurement
  • Save costs on writing for difficult installation conditions. Wireless technology offers cost advantages in cases where extensive wiring cots would normally apply.
  • It enables additional hitherto unfeasible measuring points, particularly for monitoring purposes
  • Easy installation also on moveable equipment parts
  • Enables cost-effective temporary measurements, for example for process optimizations.
  • Optimum addition to wired communication and expansion of solution options for system solutions in process automation

  • LCD display with functional display items and icons, English and German display selectable
  • Practical push buttons: Three push buttons for maximum efficiency for setup, diagnostics, communication and security settings with no additional devices or tools
  • Maintenance-friendly backlight function
  • Sleep mode for efficient battery life management
  • Battery status display on LCD and in network overview
  • Precise measurement accuracy for more productivity
  • 90 and 180 degree display turnable
  • Configurable with standard tools which support EDD – e. g. with SIMATIC PDM
  • Extension cable for separate installation of the sensor
  • Physical HART maintenance port for commissioning

Application

The SITRANS TF280 is a WirelessHART field device for measuring temperature with a Pt100 sensor.

This sensor can be installed directly on the field device, or connected at an offset with a cable connection. On the wireless communication side, the transmitter supports the WirelessHART standard. For initial commissioning in particular, a HART modem can be connected to the transmitter, or convenient local operation using the integrated buttons can be used without any additional devices.

It can be used in all industries and applications in non-hazardous areas.

Design

The SITRANS TF280 has a robust aluminum enclosure and is suitable for outside use. It conforms with the IP65 safety class.

The operating temperature range is -40 to +80 °C (-40 to +176 °F). Power supply is provided through an integrated battery, which is available as an accessory. The device is only approved for operation with this battery.

The aerial features a rotatable joint which can be used for directional alignment. Wireless signals can thus be optimally received and transmitted.

A special highlight is the option for direct operation on the device. The operating strategy used in this case seamlessly integrates into the strategy of all new SIEMENS field devices.

Using the device’s control buttons, it is easy to turn the HART modem interface of the device on and off. The device can be put to passive status and reactivated at any time. This helps to extend the service life of the battery.

The SITRANS TF280 transmitter features a cable gland or a Pt100 sensor including protective piping.

Function

The SITRANS TF280 can integrate itself into a WirelessHART network. It can be parameterized and operated through this network. Measured process values are transported via the network to the SIEMENS IE/WSN-PA LINK.

Configuration

Configuration of the SITRANS TF280 transmitter may be carried out as follows:

  • Initial start-up for the SITRANS TF280 with SIMATIC PDM is generally carried out via a HART modem or the integrated local user interface, since the network ID and join key must be set up on the device before it can be accepted and integrated into the WirelessHART network.
  • Once it is integrated into the network, the device can be conveniently operated with the WirelessHART network, the onsite HART modem or via the local user interface.

Integration

Connecting to SIMATIC PCS 7

The integration of field devices in SIMATIC PCS 7 and other process control systems can now be done seamlessly and cost-effectively with wireless technology, especially in situations where high wiring costs may be expected. Of particular interest are measuring points which are to be added and for which no MSR wiring is available.

Where larger distances between the IW/WSN-PA LINK and control systems need to be overcome, this connection can also be implemented on a wireless and cost-effective basis using the products of the SCALANCE W family.

The Siemens WirelessHART devices are designed for optimum compatibility with products of the SCALANCE W family.

Integration of a meshed network into SIMATIC PCS 7

Dimensional drawings

SITRANS TF280 WirelessHART temperature transmitter with Pt100, dimensions in mm (inch)

The dimension drawing of the mounting bracket is available on page

SITRANS TF280 WirelessHART temperature transmitter without Pt100, dimensions in mm (inch)

The drawing of the mounting bracket including the dimensions can be found on page

SITRANS TF280

Detail

 Input Pt100 (IEC 60751)
 Output WirelessHART radio in 2.4 GHz