Endress+Hauser TST40N RTD Thermometer

RTD Thermometer TST40NDiscontinued

Endress+Hauser TST40N

The high modular and robust thermometer finds its use in several applications in almost all industries. An optional head transmitter, with all common communication protocols, makes the device ready to use with enhanced measurement accuracy and reliability compared to directly wired sensors. A variety of process connections, dimensions and materials offers flexible application possibilities.

Get Quote Back

Compare

Thermometer

Measuring Principle
Characteristic / Application	metric style modular temperature assembly fast response time (reduced/tapered tip) threaded process connection with neck
Thermowell / protection tube	without (not intended to use with thermowell)
Insert / probe	mineral insulated (MI), flexible
Outer diameter protection tube / Insert	6,0 mm (0,24'') 9,0 mm (0,35'')
Max. immersion length on request	up to 10.000,00 mm (393,70'')
Material protection tube/ thermowell	1.4404 (316L)
Process connection	male thread: G1/2" G3/4" G1" NPT1/2" NPT3/4" NPT1" M20x1.5
Tip shape	reduced
Surface roughness Ra	0,8 μm (31,5 μin.)
Operating temperature range	PT 100: -50 °C ...600 °C (-58 °F ...1.112 °F)
Max. process pressure (static)	at 20 °C: 20 bar (290 psi)
Accuracy	class A acc. to IEC 60751 class AA acc. to IEC 60751
Response time	depending on configuration t50 = 3 s t90 = 6 s
Integration head transmitter	yes (4 … 20 mA; HART; PROFIBUS PA; FOUNDATION FIELDBUS)
Certification	SIL (transmitter only)

Product Overview

Highly modular, robust thermometer suitable for applications in almost all industries. Devices with an optional head-mounted transmitter are compatible with all common communication protocols, are ready for immediate use and offer higher measuring accuracy and reliability than directly wired sensors. A wide range of process connections, versions and materials provides flexibility in use.

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
Short, tapered tip for faster response time
Easy selection of the head transmitter: analog output 4 to 20 mA, HART®, PROFIBUS® PA or FF fieldbus

Spare Parts & Accessories 28

28 spare parts · click to collapse

Order code	Description
71044061	equipment package2x screws, 2x springs, 2x spring rings, 1x sealing CDI-connector	Details
71367414	Copper sealing ringPacking unit: 10 pieces	Details
71367420	Copper sealing ringPacking unit: 10 pieces	Details
71367424	Copper sealing ringPacking unit: 10 pieces	Details
71367425	Copper sealing ringPacking unit: 10 pieces	Details
71367427	gasketPacking unit: 10 pieces	Details
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
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
READWIN-	Readwin 2000 Commissioning Package READWINReadwin 2000 Operation + Read. software	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
FXA191-	Commubox FXA191Modem to connect smart devices with INTENSOR or HART protocol to personal computers. The signal circuit is intrinsically safe (Ex i a). The connection to the personal computer is realized with the inte- grated cable through the serial port.	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
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
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
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
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
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
TID10-	Temperature transmitter display TID10to plug on. Dot-Matrix measured value display. 12 DIP-switches buttom side. Settings: FF: Simulation, Write Lock. PA: Bus address, Write Lock. Compatible: TMT85, TMT84.	Enquire
TA30E-	Terminal Head TA30ERetainer for terminal block or head transmitter + optional display. Cover: screwed, 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
TA30H-	Junction box TA30HRetainer for terminal block or head transmitter + optional display. Design: explosion proof Cover: screwed, 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). Protection Ex d/XP: IP66/67 (housing).	Enquire
TA30D-	Junction box TA30DRetainer for 2 head transmitters or terminal blocks. Cover: high, hinged. Material: aluminium. Coating: polyester powder-coating. Colour: body blue, cover grey. Ambient temp.: -50...150 oC (housing). Protection: IP66/68, NEMA 4X (housing).	Enquire
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
TA20A-	*** Terminal Box TA20AProduct Phased Out. Connection head to mount a measuring insert with head transmitter or a connection socket. To be mounted on an armature or protective sleeve. Material: Aluminium epoxy resin coating Area temperature : max. +100oC; ATEX: +95oC.	Enquire
TA20B-	Terminal box TA20BConnecting head to mount a measuring insert with head transmitter or a connection socket. To be mounted on an armature or protective sleeve. Material:Polyamid black Ambient temperature: max. +80 oC Protection: IP65	Enquire
TA20D-	Terminal Box TA20DProduct Phased Out. Connection head to mount a measuring insert with up to two head transmitters or a connection socket and one head transmitter. For mounting on armature or protection sleeve. Material: Aluminium, varnished Ambient temperature: max. +100 oC; ATEX: +95 oC. Protection: IP66	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

Configurator / Comparison

ConfigureEnter a product model to configure

CompareEnter the product models to compare — up to three products

Source:Endress+Hauserwebsite public information

All documents for this model

2 documents · click to expand

Old version (11.98): RTD Thermometer omnigrad TST40N English

Rev. 1198 4 pages

Preview

New Version (01.14): Omnigrad TST40N, TST41N English

Rev. 0114 16 pages

Preview

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.

Endress+Hauser

Name	Category	Purpose	Retention
ainstru_lang	Necessary	Remembers your language choice	1 year
Anonymous counter	Necessary	Counts page views. Sets no cookie and stores no IP; internal use only, cannot identify you	Same day only, not linkable across days
Analytics / advertising cookies: not currently used on this site. If enabled in future, they will load only after your consent and can be withdrawn at any time.

TST40N RTD ThermometerDiscontinued

Technical Data