The TM4461 is a long-probe IFM temperature sensor designed for accurate measurement in tanks, vessels and process pipelines. It uses a Pt 100 Class A sensing element and provides a passive RTD signal to an external evaluation unit. The 250 mm installation length provides deep immersion for larger process systems. Its G 1/2 external thread supports reliable installation in compatible process connections. Stainless-steel construction, IP68/IP69K protection and high pressure resistance make it suitable for demanding industrial applications. IFM specifies a -40...150 °C range, 160 bar pressure rating, 250 mm installation length and 1/3 second T05/T09 response for this model.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The TM4461 features a robust cylindrical stainless-steel housing and an extended 250 mm probe. The 6 mm probe diameter provides a practical balance between insertion depth and mechanical construction. Stainless-steel 316L wetted material provides durability in suitable industrial media. Its G 1/2 external thread enables secure process mounting. The M12 connector uses gold-plated contacts for reliable electrical connection.
The Pt 100 Class A sensing element follows DIN EN 60751 requirements. The -40...150 °C measuring range covers many industrial temperature applications. Its 250 mm installation length provides deep measurement inside process vessels and pipelines. The specified dynamic response is approximately 1 second for T05 and 3 seconds for T09. The sensor provides a passive resistance signal for a compatible evaluation system.
The G 1/2 external thread supports direct mounting into compatible process equipment. Process adapters can provide additional installation flexibility when required. The M12 A-coded connector simplifies connection to evaluation electronics. The passive sensor architecture allows centralised temperature processing. This makes the sensor suitable for PLC, controller and industrial monitoring applications.
Pt 100 Class A
250 mm installation length
G 1/2 external thread
6 mm probe diameter
-40...150 °C range
160 bar pressure rating
Passive RTD output
316L stainless steel
M12 connector
Gold-plated contacts
IP68 / IP69K
1 / 3 s T05/T09
Fast response
Deep immersion
External evaluation unit
Process tanks
Storage vessels
Industrial pipelines
Cooling systems
Heating systems
Pumps
Compressors
Process skids
Liquid temperature measurement
Gas temperature measurement
PLC RTD inputs
Temperature control
Thermal processing
Machine monitoring
Industrial automation
| Specification | Details |
|---|---|
| Product Model | TM4461 |
| Type Code | TM-250KFBR12- /US/ |
| Sensor | Pt 100 Class A |
| Standard | DIN EN 60751 |
| Measuring Range | -40...150 °C |
| Fahrenheit Range | -40...302 °F |
| Installation Length | 250 mm |
| Probe Length | 236 mm |
| Probe Diameter | 6 mm |
| Process Connection | G 1/2 external thread |
| Media | Liquids and gases |
| Pressure Rating | 160 bar |
| Minimum Installation Depth | 15 mm |
| Accuracy | ±(0.15 K + 0.002 × |
| Response T05/T09 | 1 / 3 s |
| Housing | Cylindrical |
| Housing Material | 316L / 1.4404 |
| Wetted Material | Stainless steel |
| Electrical Connection | M12 A-coded |
| Contacts | Gold-plated |
| Protection Class | III |
| Ingress Protection | IP68 / IP69K |
| Output | Passive RTD |
| Evaluation | External |
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