The TM4591 is a compact hygienic temperature sensor designed for precise measurement in process installations. It uses a Pt100 Class A element with a short 20 mm installation length. The G 1/2 external threaded sealing-cone connection enables direct integration into compatible process adapters. Its stainless-steel construction and high ingress protection support demanding industrial and hygienic environments. The M12 connection provides convenient integration with temperature evaluation systems.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The TM4591 is particularly suitable where a short insertion depth is preferred. Its compact probe design provides fast thermal response while reducing the amount of sensor inserted into the process. The Pt100 element offers stable and repeatable temperature measurement. The sensor is designed for liquids and gases in process applications. Its hygienic mechanical design supports installation in tanks, pipes and process equipment.
The measuring range extends from -40 to 150 °C. The Pt100 Class A element follows DIN EN 60751 requirements. The 20 mm installation length provides a compact measurement point. T05/T09 response of approximately 1/3 seconds supports monitoring of changing process temperatures. The sensor is suitable for continuous temperature evaluation.
The G 1/2 external thread uses a sealing cone for process connection. The compact 20 mm probe length is suitable where installation space is limited. M12 electrical connectivity simplifies wiring and sensor replacement. Gold-plated contacts support reliable electrical connection. The sensor can be integrated with suitable evaluation units.
The stainless-steel body provides robust industrial construction. IP68/IP69K protection supports wet and washdown environments. The sensor has a pressure rating of 160 bar when considered as specified for the sensor installation. Shock and vibration resistance support reliable machine operation. Its compact construction makes it suitable for hygienic process installations.
The M12 interface allows convenient access during maintenance. The Pt100 output can be evaluated through compatible resistance-temperature measurement equipment. The process sealing area should be inspected during routine maintenance. The sensing surface should be kept clean to preserve thermal response. Correct adapter selection is important when installing the sensor into the process.
Pt100 Class A measuring element
20 mm installation length
-40...150 °C measuring range
G 1/2 sealing-cone process connection
Compact probe design
6 mm probe diameter
M12 connector
Gold-plated contacts
IP68/IP69K protection
Stainless-steel construction
160 bar sensor pressure rating
Fast dynamic response
Compact hygienic process measurement
Tanks and vessels
Process pipelines
Liquid temperature monitoring
Gas temperature monitoring
Food processing equipment
Beverage systems
CIP installations
Industrial automation
Temperature evaluation units
Machine temperature monitoring
Process control systems
| No. | Specification | Details |
|---|---|---|
| 1 | Product Code | TM4591 |
| 2 | Product Family | Temperature Sensors |
| 3 | Product Type | Hygienic RTD sensor |
| 4 | Model Designation | TM-020KFER12- /US/ |
| 5 | Measuring Element | 1 x Pt100 |
| 6 | Sensor Class | Class A |
| 7 | Measuring Range | -40...150 °C |
| 8 | Fahrenheit Range | -40...302 °F |
| 9 | Process Connection | G 1/2 external thread, sealing cone |
| 10 | Installation Length | 20 mm |
| 11 | Probe Length | 20 mm |
| 12 | Probe Diameter | 6 mm |
| 13 | Media | Liquids and gases |
| 14 | Pressure Rating | 160 bar |
| 15 | Minimum Installation Depth | 15 mm |
| 16 | Accuracy | ±(0.15 K + 0.002 × |
| 17 | Dynamic Response | 1 / 3 s |
| 18 | Ambient Temperature | -25...80 °C |
| 19 | Storage Temperature | -40...100 °C |
| 20 | Protection Rating | IP68 / IP69K |
| 21 | Protection Class | III |
| 22 | Housing | Cylindrical stainless steel |
| 23 | Wetted Material | Stainless steel |
| 24 | Electrical Connection | M12 |
| 25 | Connector Contacts | Gold-plated |
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