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Siemens IK PI · 2015

Industrial Wireless Communication

WirelessHART

SITRANS TF280, WirelessHART

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Overview

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

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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

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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 con-

nected at an offset with a cable connection. On the wireless

communication side, the transmitter supports the WirelessHART

standard. A HART modem can be connected to the transmitter

particularly for initial parameterization.

It can be used in all industries and applications in non-explosive

areas.

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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.

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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 net-

work to the SIEMENS IE/WSN-PA LINK.

Field device data received by the IE/WSN-PA LINK is transmitted

to the connected systems, for example the process control sys-

tem SIMATIC PCS 7. For an introduction to the mode of operation

of WirelessHART, please see the FI 01 catalog chapter 8 or at

http://www.siemens.com/wirelesshart.

Detailed information on IE/WSN-PA LINK can be found

in the FI 01 catalog chapter 8 or at

http://www.siemens.com/wirelesshart.

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