ABB TTF300.S3.C.2.H.BF-C4.C Field-Mount Temperature Transmitter

Overview

The ABB TTF300.S3.C.2.H.BF-C4.C is a field-mount temperature transmitter from ABB’s TTF300 series, engineered in proven two-wire technology to accept resistance thermometers, thermocouples, and direct resistance signals up to 5000 Ω, converting the sensor input into a standardized 4-20 mA signal with HART communication. The transmitter can measure one or two sensor inputs simultaneously, giving process engineers redundancy or differential temperature measurement capability from a single field-mounted device.

Process facilities across Muscat, Sohar, and Salalah can source ABB temperature instrumentation through Seven Star LLC with a formal quotation and the manufacturer datasheet.

Measurement Principle

The ABB TTF300.S3.C.2.H.BF-C4.C accepts the raw electrical signal from a connected RTD or thermocouple sensor, linearizes the input according to the sensor type’s characteristic curve, and applies cold-junction compensation for thermocouple inputs before converting the linearized temperature value into a proportional 4-20 mA output signal. HART communication is superimposed on the same two-wire loop, allowing bidirectional digital communication for configuration, diagnostics, and secondary variable transmission without requiring additional wiring.

Because the transmitter continuously monitors sensor health, including detecting drift, open-circuit, and short-circuit conditions, it provides diagnostic information that a bare sensor loop cannot offer on its own, alerting maintenance teams to a developing sensor fault before it causes a control loop upset. The practical consequence for plant operators is a temperature measurement point with 0.1 K accuracy and continuous self-diagnostic monitoring, reducing both the risk of undetected sensor failure and the maintenance effort required to verify loop health.

Engineering Design of the ABB TTF300

The ABB TTF300.S3.C.2.H.BF-C4.C is housed in a field-mount enclosure rated for hazardous area installation per the approvals defined in the specific order code, with a digital front panel local display and interface supporting on-site configuration without requiring a separate handheld communicator. Input/output redundancy and sensor matching capability allow the transmitter to be configured for dual-sensor applications, where one sensor can serve as a backup or where differential temperature measurement is required across two points.

The transmitter’s terminal compartment accommodates standard RTD and thermocouple wiring configurations, and its wide sensed temperature range of -200°C to +850°C covers the vast majority of industrial process temperature measurement requirements from cryogenic service through high-temperature process streams. This broad application range, combined with HART/PROFIBUS PA/FOUNDATION Fieldbus protocol options depending on the ordered configuration, makes the TTF300 platform adaptable to a wide variety of plant control system architectures.

Key Features

The ABB TTF300.S3.C.2.H.BF-C4.C combines precision measurement with continuous diagnostics, and the following features summarize why process engineers specify this transmitter for critical temperature loops:

• Two-wire HART technology delivers 4-20 mA output with superimposed digital communication on the same loop.
• Accepts RTD, thermocouple, and direct resistance inputs up to 5000 Ω for broad sensor compatibility.
• Dual-sensor input capability supports redundancy or differential temperature measurement applications.
• Continuous sensor diagnostics detect drift, open-circuit, and short-circuit conditions before they cause control upsets.
• Measurement accuracy of 0.1 K supports demanding process control and custody-transfer applications.
• Wide sensed temperature range of -200°C to +850°C covers cryogenic through high-temperature process service.
• Digital front panel local interface simplifies on-site configuration without a separate communicator.
• Hazardous area approval options support installation in classified process environments.

Industrial Applications

The ABB TTF300.S3.C.2.H.BF-C4.C is deployed across refinery process units, petrochemical reactors, and power generation steam systems where accurate, continuously diagnosed temperature measurement is essential to safe and efficient operation. In Oman, this transmitter platform is commonly specified for refinery distillation column temperature profiling, power plant boiler and turbine temperature monitoring, and district cooling plant chilled water temperature control loops.

With engineering support in Muscat, Seven Star LLC supplies the TTF300 series to EPC contractors and plant instrumentation teams throughout the Sohar and Salalah economic zones, supporting both new project specification and like-for-like transmitter replacement on existing ABB temperature measurement points across Muscat. The transmitter’s diagnostic capability and measurement accuracy make it a preferred specification for critical temperature control across the GCC’s energy and process industries.

Technical Specifications

The table below summarizes the key operating parameters of the ABB TTF300.S3.C.2.H.BF-C4.C temperature transmitter.

Enclosure, Electrical Isolation, and Hazardous-Area Protection

The field housing of the ABB TTF300.S3.C.2.H.BF-C4.C is produced in epoxy-coated die-cast aluminium, with a stainless steel housing available where chloride-bearing coastal atmospheres or washdown regimes rule out aluminium. The enclosure is rated IP 66 and IP 67 to NEMA 4X, and the transmitter is specified for an ambient range of −40°C to +85°C, with a −50°C low-temperature variant offered – the upper figure being the relevant one for unshaded installations on Omani process plant, where in-sun enclosure temperatures routinely exceed shade ambient by a wide margin.

Input-to-output galvanic isolation is rated at 3.5 kV DC (approximately 2.5 kV AC) for 60 seconds, which protects the control system from ground-loop currents and from transients introduced through long sensor runs in switchyards and boiler houses. Explosion protection is available under ATEX, IECEx, FM, and CSA schemes in both intrinsic safety and flameproof forms, including II 1G Ex ia IIC T6 and II 2G Ex d IIC T6 designations, together with dust-protection variants. For safety instrumented systems, the HART version of the transmitter is assessed to IEC 61508 for use in safety-related applications up to and including SIL 2, and SIL 3 in redundant architectures, which allows the same hardware to serve both basic process control and protective functions.

Configuration, Sensor Matching, and Field Integration

Beyond simple linearization, the ABB TTF300.S3.C.2.H.BF-C4.C supports sensor error adjustment, in which the individual characteristic coefficients of the connected resistance thermometer are entered into the transmitter so that the sensor and transmitter are treated as a matched pair. This removes the interchangeability tolerance of the sensor from the total measurement error and is the standard technique for squeezing the last tenths of a Kelvin out of a critical loop, such as a fractionator draw-off or a turbine inlet measurement. Sensor redundancy and sensor drift monitoring operate on the dual-input configuration, comparing the two elements continuously and raising an alarm when their divergence exceeds a configured threshold.

Configuration is carried out either at the device through the LCD indicator and its local keys, or remotely using a DTM within an FDT frame application or an EDD within a host asset management system, so the transmitter integrates with the maintenance tooling already in use on site rather than requiring a dedicated utility. Supply voltage is 11 to 42 V DC for the HART version and 9 to 32 V DC for the PROFIBUS PA and FOUNDATION Fieldbus versions. Electromagnetic compatibility follows IEC 61326, and the unit withstands vibration of 10 to 2000 Hz at 5 g, which is well within the duty seen on compressor skids and pump houses. Seven Star LLC recommends confirming the exact approval and housing options encoded in the order suffix against the site hazardous-area classification before installation.

Request a Quote for ABB TTF300.S3.C.2.H.BF-C4.C Field-Mount Temperature Transmitter

Seven Star LLC supports formal RFQ submissions, confirms lead time at quotation, and can provide the full technical datasheet for the ABB TTF300.S3.C.2.H.BF-C4.C transmitter on request. Contact the Seven Star LLC instrumentation division for genuine ABB temperature instrumentation and application engineering support across Muscat, Sohar, and Salalah.

Related Products

• Endress+Hauser TR66-CCEEC2XCKDA0 iTHERM Temperature Sensor U=350mm
• Honeywell Chadwick-Helmuth 8500C Rotor Track and Balance Analyzer
• Isotech Jupiter 4852 Portable Dry Block Calibrator
• Jumo 902006 2xPt100 RTD Temperature Sensor
• Siemens SITRANS TR200 Temperature Transmitter
• WIKA TR10 RTD Sensor