Technical Data
CompareTemperature switch
| Measuring Principle | Temperature switch |
| Characteristic / Application | Intelligent temperature switch with Pt100 sensor (Class A) DESINA compliant |
| Auxiliary power supply | 12...30 V DC |
| Accuracy | -50...75 °C: <0,5 K (-58...167 °F: <0,9 °F) 75...150 °C: <0,65 K (167...302 °F: <1,2 °F) |
| Long term drift | <0,1K/a (<0,2°F/a) |
| Operating temperature range | -50...150 °C (-58...302 °F) |
| Process connection | threads, clamp connection |
| Hint | Not defined |
Modern process measurement technology requires benefits such as high cost-effectiveness, space saving, reliable operation, easy installation and simple commissioning. This temperature switch fully meets these requirements and is suitable for the safe measurement and monitoring of process temperature. It offers 1 or 2 switch outputs, or 1 switch output and 1 standard analog output. The built-in vibration-resistant thin-film sensor ensures the highest operational safety.
Advantages
Integrated switching element enables more decentralized and economical process monitoring and control
High repeatability and long-term stability
LEDs and digital display provide function control and on-site information display
Long-term stable platinum resistance (Pt100 class A, compliant with IEC 60751)
High-precision measurement and very short response time across the entire ambient temperature range
Operation and visualization with a PC and FieldCare, or with the ReadWin® 2000 configuration software
Compliant with DESINA standard
Spare Parts & Accessories 7
7 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 51005148 | 5 m cable, 4x0.34 mm², PVC5米线缆，4x0.34m㎡，PVC M12x1 拐角航空插头， 螺栓 Cu Sn/NI，IP67 | Details |
| 71535690 | Welded socket with collar d6 PEEK + screw | Details |
| 71535691 | Welded socket with collar, d6, PEEK, without screw | Details |
| 71535693 | M12 elbow plug ready for cable, IP67, PG7 | Details |
| TA50- | Mounting parts, compression fitting TA50Screw in. | Enquire |
| 71535688 | Gasket rubber cap CDI-connectorPacking unit: 5 pieces | Details |
| 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 |
Configurator / Comparison
Source:Endress+Hauserwebsite public information
Measuring principle video
Click to playManuals & Documents 8
All documents for this model8 documents · click to expand
BA Thermophant T TTR31 ,Thermophant T TTR35 Chinese
BA Thermophant T TTR31, Thermophant T TTR35 English
ReadWin® Quick Setup English
Temperature switch Thermophant T TTR31, TTR35 device release: 01.01. - 01.02. English
TI 焊接接头、过程转接头和法兰 Chinese
Thermophant T TTR31, TTR35 Chinese
TI Weld-in adapter, process adapter and flanges English
TI Thermophant T TTR31, Thermophant T TTR35 English
Case Studies
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 · 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 · 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 · 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.
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