TM311 Thermometer Spare Parts Overview
TM311 is a hygienic compact thermometer launched by Endress+Hauser, widely used in the food and beverage and pharmaceutical industries. To ensure measurement accuracy and system reliability, correct selection of spare parts is crucial. This article summarizes the common spare part order numbers, specifications, and applicable models of TM311 for reference by engineering technicians and procurement.
Spare Parts List and Specifications
Welded Sockets and Process Connections
The welded socket is a key component for thermometer installation, directly affecting sealing performance and hygiene level. The table below lists ordering information for common welded sockets and process connections.
| Order Number | Specification Description | Applicable Model/Remarks |
|---|---|---|
| 52018765 | Welded socket, flush mounting, 316L, EHEDG, silicone O-ring, EN10204-3.1 | FTL20 "1", FTL20H "GDJ", FMI51, FTI51 "GQJ" |
| 52028295 | Welded socket, flush mounting, 316L, EHEDG, silicone O-ring, EN10204-3.1 | FTL20 "1", FTL20H "GDJ", without flange |
| 52001052 | Welded socket, flush mounting, 316L, silicone O-ring | FTL50/FTL50H "GQ2" |
| 52011897 | Welded socket, flush mounting, 316L, silicone O-ring, FDA/3-A, EN10204-3.1 | FTL41, FTL50/50H, FTL51B, FTL80, QMW43, TMR35 |
| 71093129 | Welded socket, flush mounting, 316L, silicone O-ring, FDA/3-A/EHEDG/USP VI | FMI51/52, FTI51/52, FTL20H, FTL31/33, FTL41, FTL50/51 series, PMP135, etc. |
| 52001051 | Process connection, Weld-in G1, d=60, 316L, silicone O-ring | FTL260 "0", FTL20 "7", FTL20H "GEJ", FTL330H/L "G", etc. |
| 52011896 | Welded socket, G1, d=60, 3.1 material certification, silicone O-ring | FTL260 "0", FTL20H "GEJ", FTL50/51 series, PMP135 "N", etc. |
| 52001221 | Welded socket, flush mounting, 316L, silicone O-ring, adjustable | FTL260 "0", FTL20 "7", FTL20H "GEJ", FTL330H/L "G", etc. |
| 52011898 | Welded socket, flush mounting, 316L, silicone O-ring, EN10204-3.1, adjustable | FTL260 "0", FTL20H "GEJ", FTL50/51 series |
O-Rings and Sealing Gaskets
Seals are the core to ensuring leak-free hygienic connections. Common O-rings and sealing gaskets are listed below.
- 52021717: O-ring, for G3/4 weld-in adapter, D=50, 316L, suitable for Liquiphant T FTL20H.
- 52014473: O-ring, for G3/4 weld-in adapter, suitable for Liquiphant M "GQ2".
- 52014472: O-ring, for G1 weld-in adapter (52001051/52011896), suitable for Liquiphant M "GW2", Cerabar T PMP135 "N", etc.
- 52014424: Sealing gasket, for G1 weld-in adapter, adjustable, 316L, suitable for Liquiphant M "GW2", FTL330H/L, etc.
Cables and Connectors
Cables and connectors ensure stable signal transmission and are suitable for harsh environments.
- 71449142: Cable.
- 71217708: Core wire set 4p D18 IP69K, PVC cable 4x0.34mm², M12x1.5 coupling nut, epoxy-coated zinc, straight socket, 5m.
- 71589963: Cable connector M12 IP69K, 5m.
- 71535693: M12 angled plug, IP67, PG7, pre-assembled cable.
Other Accessories
- 71535690: Collar welded socket d6 PEEK + screw.
- 71535691: Collar welded socket d6 PEEK w/o screw.
- 60022519: Plug screw.
- 71405560: Weld in adapter M12x1.5 1.4435/316L.
- 71424800: 1/2" G threaded base, for connecting G1/2" female thread, 316L, 2x leakage holes.
- 71535692: Plug screw fitting 316L M12x1.5.
TM311 Thermometer Selection Points
Core Parameters
- Sensor: Pt100 Class A standard or fast response type.
- Output: IO-Link, 4-20mA, switching output, or Pt100 4-wire.
- Measuring range: -50...200°C (-58...392°F).
- Application: Hygienic and industrial occasions, direct contact, with protective sleeve, or for existing thermowells.
Selection Recommendations
- Select a matching welded socket or adapter according to the process connection type.
- Confirm that the sealing material meets hygiene standards (such as FDA, EHEDG, 3-A).
- Select the transmitter model according to output signal requirements.
- Check the protection rating of the cable connector (IP69K is suitable for high-pressure washdown environments).
Summary
Correct selection of TM311 spare parts can significantly improve the service life and reliability of the measurement system. It is recommended to verify the order number and applicable model during procurement, and give priority to components with 3.1 material certification to meet the requirements of the hygiene industry. For a complete spare parts list, please refer to the official documentation or contact the supplier.