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TST434 RTD Thermometer

TST434 RTD Thermometer
RTD Thermometer TST434
The RTD thermometer is especially designed for monitoring the room temperature. The device with head transmitter is a complete unit ready for use with enhanced measurement accuracy and reliability compared to directly wired sensors. For ambient temperature measurements indoor or outdoor.
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Thermometer

Measuring Principle
Characteristic / Application metric style
probe for ambient temperature measurement
without neck
Thermowell / protection tube without (not intended to use with thermowell)
Outer diameter protection tube / Insert 20,0 mm (0,79'')
Material protection tube/ thermowell Aluminium
Operating temperature range PT 100:
-50 °C ...100 °C
(-58 °F …212 °F)
Max. process pressure (static) at 20 °C: 1 bar (15 psi)
Accuracy class A acc. to IEC 60751
class B acc. to IEC 60751
Integration head transmitter yes (4 … 20 mA; HART; PROFIBUS PA; FOUNDATION FIELDBUS)
Certification SIL (transmitter only)

The specially designed platinum resistance (RTD) thermometer is mainly used for monitoring room temperature. Devices with a head-mounted transmitter are ready for immediate use and offer higher measuring accuracy and reliability than directly wired sensors, and can be used for indoor and outdoor ambient temperature measurement.

 

Benefits

Modular design with a standard terminal head conforming to DIN EN 50446 and customer-specific immersion length for high flexibility

Highly compatible insert, designed in accordance with DIN 43772

High accuracy and extremely long stability

Easy selection of the head transmitter: analog output 4 to 20 mA, HART®, PROFIBUS® PA or FF fieldbus

Spare Parts & Accessories 16

16 spare parts · click to collapse
Order codeDescription
TA30A-Terminal box TA30ARetainer for terminal block or head transmitter + optional display. Cover: low, hinged, optional window. Material: aluminium. Coating: polyester powder-coating. Colour: body blue, cover grey. Ambient temp.: -50...150 oC (housing). Protection: IP66/68, NEMA 4X (housing).Enquire
TMT82-Temperature transmitter TMT822-wire temperature transmitter. Dual universal sensor input. Galvanic isolation 2kV (input/output). Application: RTD, TC, Ohm and mV. Presetting failure current high. Consider additional marine certificate requirements on application side. ::Highly reliable due to drift detection and sensor back up. ::Optional also for safety critical applications by means of SIL 2/3 acc. to IEC61508.Enquire
TMT82-Temperature transmitter TMT822-wire temperature transmitter. Dual universal sensor input. Galvanic isolation 2kV (input/output). Application: RTD, TC, Ohm and mV. Presetting failure current high. Consider additional marine certificate requirements on application side. ::Highly reliable due to drift detection and sensor back up. ::Optional also for safety critical applications by means of SIL 2/3 acc. to IEC61508.Enquire
TMT84-Temperature transmitter TMT84Dual sensor input. Advanced diagnostics: sensor monitoring. Galvanic isolation 2kV. Application: RTC, TC, Ohm, mV. Current consumption: 11 mA. Mounting: head form B, DIN43729. Factory setup: CH1: Pt100, 3-wire, oC CH2: inactive Differing configuration optional selectable.Enquire
TMT85-Temperature transmitter TMT85Temperature transmitter with dual sensor input and advanced diagnostics for sensor monitoring. FOUNDATION Fieldbus protocol (ITK 5.0). Galvanic isolation 2 kV (sensor input to the output). Application: RTC, TC, Ohm, mV. Current consumption: 11 mA. Mounting: head form B, DIN43729. UL listed, CSA General Purpose.Enquire
TMT84-Temperature transmitter TMT84Dual sensor input. Advanced diagnostics: sensor monitoring. Galvanic isolation 2kV. Application: RTC, TC, Ohm, mV. Current consumption: 11 mA. Mounting: head form B, DIN43729. Factory setup: CH1: Pt100, 3-wire, oC CH2: inactive Differing configuration optional selectable.Enquire
TMT85-Temperature transmitter TMT85Temperature transmitter with dual sensor input and advanced diagnostics for sensor monitoring. FOUNDATION Fieldbus protocol (ITK 5.0). Galvanic isolation 2 kV (sensor input to the output). Application: RTC, TC, Ohm, mV. Current consumption: 11 mA. Mounting: head form B, DIN43729. UL listed, CSA General Purpose.Enquire
71044061equipment package2x screws, 2x springs, 2x spring rings, 1x sealing CDI-connectorDetails
TXU10-Instrument Commissioning Kit TXU10用于可以PC编程调试的设备 程序设置+用于带USB接口的PC的连接线Enquire
FXA195-Communication interface FXA195Modem to connect HART field devices to a computer via USB. Commissioning of field devices with software tool. :: To connect to a intrinsically safe signal circuit. :: SIL2, IEC61508.Enquire
READWIN-Readwin 2000 Commissioning Package READWINReadwin 2000 Operation + Read. softwareEnquire
TMT82-Temperature transmitter TMT822-wire temperature transmitter. Dual universal sensor input. Galvanic isolation 2kV (input/output). Application: RTD, TC, Ohm and mV. Presetting failure current high. Consider additional marine certificate requirements on application side. ::Highly reliable due to drift detection and sensor back up. ::Optional also for safety critical applications by means of SIL 2/3 acc. to IEC61508.Enquire
TMT180-*** module temperature transmitter TMT180Product Phased Out. Temperature transmitter,PC-programable. Application: RTD. 2-wire 4-20mA. Fault reaction: NAMUR NE 43. Mounting: head form B, DIN EN50446. UL listed.Enquire
TMT181-iTEMP TMT181, Head Transmitter PCPProduct being phased out, limited availability. Temperature transmitter,PC-programmable. Application: RTD, TC, Ohm, mV. 2-wire 4-20mA, galvanic isolation. Fault reaction: NAMUR NE 43. Mounting: head form B, DIN EN50446. UL listed.Enquire
TMT182-*** module temperature transmitter TMT182Temperature transmitter, Protocol HART. Application: RTD, TC, Ohm, mV. 2-wire 4-20mA, SIL2, galvanic isolation Fault reaction: NAMUR NE 43. Mounting: head form B, DIN43729. UL listed. GL (German Llyod) Marine.Enquire
TMT184-iTEMP TMT184, head transmitter PATemperature transmitter, Profibus-PA. Application: RTD, TC, Ohm, mV. Galvanic isolation. Profil V3.0. Curr. consumption 11mA Mounting: head form B, DIN43729.Enquire

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Source:Endress+Hauserwebsite public information

Measuring principle video

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All documents for this model
3 documents · click to expand
TI

TI iTHERM ModuLine TST434B Chinese

Rev. 0424 16 pages
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TI

TI iTHERM ModuLine TST434B English

Rev. 0424 20 pages
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TI

Technical information English

Rev. 0401 4 pages
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Municipal Wastewater Treatment

Municipal Wastewater Treatment · thermistor — Application Case

Project Overview

The site is the inlet, biological and outlet stages of a municipal plant. The customer wanted thermistor properly configured on the existing plant, with the aim of high-accuracy temperature measurement with platinum resistance elements.

Technical Challenges

What actually causes trouble is high solids and corrosive fractions, with large diurnal flow swings, and effluent parameters drift and probes foul with sludge and biofilm. All of this means the thermistor configuration has to involve choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.

Configuration

Supply and installation were organised through the temperature range: temperature solution matched to measuring point and response needs. On site this meant choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, checked line by line against: stable compliance with Grade 1A discharge limits and online data reporting.

Performance

After commissioning the outcome is clear accuracy advantage at low temperatures, giving tighter process windows, and the readings are now used for process tuning.

Food & Beverage

Food & Beverage · thermistor — Application Case

Site Conditions

This is a Food & Beverage customer whose plant is at dosing, pasteurising, filling and CIP stages. The main task was high-accuracy temperature measurement with platinum resistance elements.

The Problem

The difficulty lies in syrups, dairy and beverages that scale easily, under strict hygienic requirements; at the same time frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. Specification therefore means choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.

What We Did

We took a temperature range approach — temperature solution matched to measuring point and response needs. Delivery was built around choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, with point-by-point checks on: food-safety and hygienic design per 3-A / EHEDG.

Operating Outcome

In service the system performs as intended — clear accuracy advantage at low temperatures, giving tighter process windows, with routine maintenance falling noticeably.

Chemical & Pharmaceutical

Chemical & Pharmaceutical · thermistor — Application Case

Application Context

reactors, metering vessels and finished-product tanks is a typical Chemical & Pharmaceutical duty. The project started from thermistor, focusing on high-accuracy temperature measurement with platinum resistance elements.

Process Constraints

corrosion plus Ex protection shortens instrument life and makes downtime costly, and highly corrosive media with solvents and crystallisation, partly in explosive atmospheres only amplify it. The thermistor specification must therefore cover choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.

Delivery Approach

Delivery was handled as the temperature range — temperature solution matched to measuring point and response needs. Execution centred on choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, together with Ex certification and GMP traceability of records.

Field Results

Operation shows the benefit clearly — clear accuracy advantage at low temperatures, giving tighter process windows, with confidence in this measuring point improving markedly.

Power & Energy

Power & Energy · thermistor — Application Case

Customer Profile

The typical setting in Power & Energy is boiler feedwater, turbine condensate and FGD/DeNOx systems. The measuring point is thermistor; the focus is high-accuracy temperature measurement with platinum resistance elements.

Key Difficulties

Conditions are high temperature and pressure with both steam and saline water and, on top of that, drift under high temperature and pressure, with very costly unplanned outages, which a standard configuration cannot handle for long. The design therefore starts with choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth.

Implementation

The scope ran through the temperature range: temperature solution matched to measuring point and response needs. Technically it hinges on choosing Pt100 or Pt1000 by accuracy class, wiring system and insertion depth, and on these requirements: compliance with power-industry codes and unit availability targets.

Customer Benefit

In practice this means clear accuracy advantage at low temperatures, giving tighter process windows, which cut the workload on the site maintenance team.