Technical Data
CompareThermometer
| Measuring Principle | Resistance Temperature Detector |
| Characteristic / Application | metric and imperial style compact temperature probe fast response time high accuracy standard and hygienic design hygienic process connection threaded process connection |
| Thermowell / protection tube | without incl. thermowell incl. Tee-/elbow thermowell |
| Insert / probe | pipe version, isolated wires, not flexible |
| Outer diameter protection tube / Insert | 3,0 mm (0,12'') 6,0 mm (0,24'') |
| Max. immersion length on request | up to 600,00 mm (23,62'') |
| Material protection tube/ thermowell | 1.4435 Delta-Ferrit < 1% 316L |
| Process connection | compression fitting Thread weld in adapter clamp connections acc. to ISO2852 screwed pipe joint acc. to DIN 11851 aseptic screwed pipe joint acc. to DIN 11864-1 metallic sealing system thread acc. to ISO 228 for liquiphant adaptor Varivent SMS 1147 Tee-/elbow thermowell |
| Tip shape | straight reduced |
| Surface roughness Ra | 0,76 μm (29,92 μin) 0,38 μm (14,96 μin) 0,38 μm (14,96 μin) electropolished |
| Operating temperature range | PT 100: -50 °C ...200 °C (-58 °F ...392 °F) |
| Max. process pressure (static) | at 20 °C: 50 bar (725 psi) |
| Accuracy | class A acc. to IEC 60751 |
| Response time | t50 = 1 s t90 = 1.5 s |
| Integration head transmitter | no (4…20mA Signal, IO-Link) |
| Ex - approvals | CSA C/US |
| Certification | 3A, EHEDG, ASME BPE, FDA, TSE 1935/2004, 2023/2006, 10/2011 DNV, BV RCM |
Benefits
Fast installation and simple commissioning:
• Compact design, small dimensions, all stainless steel
• M12 connector, IP69 degree of protection, convenient wiring
• Universal output signals: IO-Link (self-check connection) and 4 … 20 mA (Pt100 four-wire connection)
• Models with preset measuring ranges can be ordered
• Recommended insertion lengths guarantee optimum results and the highest level of standardization
Innovative sensor technology, excellent measuring performance:
• Extremely short response time
• High accuracy even with small insertion depths
• Improved accuracy through sensor-transmitter matching
Safe measurement thanks to numerous approvals:
• Safety requirements in accordance with EN 61010-1 and CSA C/US
• Electromagnetic compatibility per NAMUR NE21
• Diagnostic information classified per NAMUR NE43
• Hygienic design per 3-A, EHEDG, ASME BPE, FDA, EC 1935/2004, EN
2023/2006, TSE/ADI, GB4806-2016 and GB9685-2016
• DNV (Det Norske Veritas) approval
Application
• Designed for hygienic and sterile applications in the food & beverage and pharmaceutical industries, meeting the highest standardization requirements of plant manufacturers and skid
builders
• Measuring range: –50 … +200 °C (–58 … +392 °F)
• Maximum pressure: 50 bar (725 psi)
• Degree of protection: IP69
• Output signals
• Without electronics: Pt100 (four-wire connection)
• With electronics: IO-Link, 4 … 20 mA current output, 1 x PNP switch output (depending on
wiring)
Spare Parts & Accessories 29
29 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71535690 | Welded socket with collar d6 PEEK + screw | Details |
| 71535691 | Welded socket with collar, d6, PEEK, without screw | Details |
| 60022519 | screw plug | Details |
| 71405560 | Weld-in adapter M12x1.5 1.4435/316L | Details |
| 71424800 | 1/2" G-thread basefor connection with G1/2" female thread. Material 316L/1.4435. 2x leakage bore. | Details |
| 52018765 | weld socketFlush mount process connection FTL20 "1", FTL20H "GDJ", FMI51, FTI51 "GQJ" Material: 316L, EHEDG compliant Seal: Silicone O-ring Inspection cert. EN10204-3.1 material (316L wetted parts) | Details |
| 52028295 | weld socketFlush mount process connection FTL20 "1", FTL20H "GDJ" w/o flange Material: 316L, EHEDG compliant Seal: Silicone O-ring Inspection cert. EN10204-3.1 material (316L wetted parts) | Details |
| 52021717 | O-ringfor weld-in adapter G3/4 D=50 316L Liquiphant T FTL20H | Details |
| 52001052 | weld socketFlush mount process connection FTL50/FTL50H "GQ2" Material: 316L Seal: Silicone O-ring | Details |
| 52011897 | weld socketFlush mount process connection. Material: 316L. Inspection cert. EN10204-3.1 material. Seal: silicone O-ring. FDA, 3-A compliant. additional EPDM O-ring. FDA, EHEDG, 3-A, USP Class VI compliant. Usage: FTL41, FTL43, FTL50, FTL50H, FTL51B, FTL63, FTL80, QMW43, TMR35. | Details |
| 52014473 | O-ringfor weld-in adapter G3/4 Liquiphant M "GQ2" | Details |
| 71093129 | weld socketFlush mount process connection. Material: 316L. Inspection cert. EN10204-3.1 material Seal: silicone O-ring FDA, 3-A compliant. Additional EPDM O-ring. FDA, EHEDG, 3-A, USP Class VI compliant. Usage: FMI51, FMI52, FTI51, FTI52, FTL31, FTL20H, FTL33, FTL41, FTL43, FTL50, FTL50H, FTL51, FTL51B, FTL51H, FTL63, FTL80, FTL81, FTL260, PMP135, PTP35, PTP33B, PMP23, PMP43, PMP51, FTW23, FTW33, QMW43. | Details |
| 52001051 | Process connection | Weld-in G1, d=60, 316L齐平安装式过程连接 FTL260 "0", FTL20 "7", FTL20H "GEJ", FTL330H/FTL330L "G", FTL50/FTL51, FTL50H/FTL51H "GW2", FMI51/FMI52, FTI51/FTI52 "GWJ", PMP135 "N", PTP35 "BB" 材质: 316L 密封: 硅橡胶 O-ring | Details |
| 52011896 | Welding socket, G1, d=60, 3.1 material certificateFlush mount process connection FTL260 "0", FTL20H "GEJ", FTL50/FTL51, FTL50H/FTL51H "GW2", FMI51/FMI52, FTI51/FTI52 "GWJ", PMP135 "N", PTP35 "BB" Material: 316L Seal: Silicone O-ring Inspection cert. EN10204-3.1 material (316L wetted parts) | Details |
| 52014472 | O-ringfor weld-in adapter G1 (52001051) Liquiphant M "GW2" Liquiphant T "7", Liquicap M "GWJ", Cerabar T PMP135 "N", Ceraphant T PTP35 "BB" for weld-in andapter G1, 316L 3.1 (52011896) Liquiphant M "GW2", Cerabar T PMP135 "N", Ceraphant T PTP35 "BB" for sliding sleeve Soliphant T | Details |
| 52001221 | weld socketFlush mount process connection FTL260 "0", FTL20 "7", FTL20H "GEJ", FTL330H/FTL330L "G", FTL50/FTL51, FTL50H/FTL51H "GW2" Liquiphant is adjustable Material: 316L Seal: Silicone O-ring | Details |
| 52011898 | weld socketFlush mount process connection FTL260 "0", FTL20H "GEJ", FTL50/FTL51, FTL50H/FTL51H "GW2" Liquiphant is adjustable Material: 316L Seal: Silicone O-ring Inspection cert. EN10204-3.1 material (316L wetted parts) | Details |
| 52014424 | Sealing gasketfor weld-in adapter G1, adjustable, 316L (52001221) Liquiphant M "GW2" for weld-in adapter G1, adjustable, 316L (52011898) Liquiphant M "GW2" for weld-in adapter G1, adjustable Liquiphant FTL330H/FTL330L, Liquiphant T FTL20H "UPJ | Details |
| SFP20- | FieldPort SFP20 USB/IO-Link modemIO-Link USB interface FieldPort SFP20 for commissioning and maintaining of IO- Link measuring devices | Enquire |
| 71460208 | Dedicated M12 connector for FieldPort SFP20Cable to connect the FieldPort SFP20 with an IO-Link device | Details |
Configurator / Comparison
Measuring principle video
Click to playSource: public information from the Endress+Hauser website
Manuals & Documents 6
All documents for this model6 documents · click to expand
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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