SIMENS SITRANS TF, transmitter for field mounting/field indicator

SITRANS TF is used where other transmitters can’t cope. One main point is its rating of IP67.

SITRANS TF is made of rugged die cast aluminum or long-lasting stainless steel. It transforms resistance thermometers, thermocouples, Ohm and mV signals into a load independent DC current corresponding to sensor characteristic or a digital signal according Fieldbus standard Profibus PA or Foundation Fieldbus. The remote mounted sensor prevents the transmitter heating up at high temperature; there are no vibrations and oscillations due to long neck tubes and protective pipes with SITRANS TF.

For tags with difficult access to you can mount your SITRANS TF remotely at easily accessible places and display the measured value on the freely programmable digital display (with version 4 to 20 mA).

You can even use the SITRANS TF in a version without a transmitter as a comfortable field display unit for all 4 to 20 mA signals.
All SITRANS TF are available in intrinsically safe or explosion proof version

Our field devices for heavy industrial use
  • HART, Universal
  • 4 to 20 mA, universal
  • Field indicator for 4 to 20 mA signals

The temperature transmitter SITRANS TF works where others feel uncomfortable.

SIMENS SITRANS TF Ordering data

Product No. / Product DescriptionListprice / Your price
7NG3130-…..
Field indicator SITRANS TF for 4 … 20 mA signals, with documentation in CD-ROM
7NG3135-…..
SITRANS TF temperature trans- mitter in housing for field mounting, two-wire system 4 to 20ma, with electrical isolation, with documentation on CD, integrated transmitter: SITRANS TH200, programmable;
7NG3136-…..
SITRANS TF temperature trans- mitter in housing for field mounting, two-wire system 4 to 20ma, with electrical isolation, with documentation on CD, integrated transmitter: SITRANS TH300, Communication capability according to HART V5.9;

SIMENS SITRANS TF  Benefits

  • Universal use
    • as transmitter for resistance thermometer, thermocouple element, Ω or mV signal
    • as field indicator for any 4 to 20 mA signals
  • Local sensing of measured values over digital display
  • Rugged two-chamber enclosure in die-cast aluminium or stainless steel
  • IP66/67/68 degree of protection
  • Test terminals for direct read-out of the output signal without breaking the current loop
  • Can be mounted elsewhere if the measuring point
    • is difficult to access
    • has high temperatures
    • experiences vibrations due to the process cell
    • is to avoid long neck tubes and protective tubes
  • Can be mounted directly on American-design sensors
  • Wide range of approvals for use in potentially explosive atmospheres. Types of protection “Intrinsically safe, non-sparking and flameproof”, for Europe and the USA.
  • SIL2 (with order note C20), SIL2/3 (with C23)

Application

SITRANS TF can be used everywhere where temperatures need to be measured under particularly adverse conditions, or where a convenient local display is ideal. For that reasons users from all industries have opted for this field device. The rugged enclosure protects the electronics. The stainless steel model is almost completely resistant to sea water and other aggressive elements. The inner workings offer high measuring accuracy, universal input and a wide range of diagnostic options.

SITRANS TF Detail

 InputResistance thermometers, Thermocouples, Resistance-type sensors, DC sources
 OutputVersions for:

4 to 20 mA, 4…20 mA with HART, Profibus PA or Foundation Fieldbus

Function

Configuration

The communication capability over the HART protocol V 5.9 of the SITRANS TF with an integrated SITRANS TH300 permits parameterization using a PC or HART communicator (hand-held communicator). The SIMATIC PDM makes it easy.

For the SITRANS TF with integrated programmable SITRANS TH200, parameters are assigned with the PC. Available for this purpose are a special modem and the software tool SIPROM T.

Mode of operation

Mode of operation of SITRANS TF as temperature transmitter

The sensor signal, whether resistance thermometer, thermocouple element or Ω or mV signal, is amplified and linearized. Sensor and output side are electrically isolated. An internal cold junction is integrated for measurements with thermocouple elements.

The device outputs a temperature-linear direct current of 4 to 20 mA. As well as the analog transmission of measured values from 4 to 20 mA, the HART version also supports digital communication for online diagnostics, measured value transmission and configuration.

SITRANS TF automatically detects when a sensor should be interrupted or is indicating a short-circuit. The practical test terminals allow direct measurement of 4 to 20 mA signals over an ammeter without interrupting the output current loop.

Mode of operation of SITRANS TF as field indicator

Any 4 to 20 mA signal can be applied to the generous terminal block. As well as a range of predefined measurement units, the adjustable indicator also supports the input of customized units. This means that any 4 to 20 mA signal can be represented in any unit, e.g. pressure, flow rate, level or temperature.

Mode of operation: SITRANS TF with integrated transmitter and digital display