FMU41 Spare Parts List Overview
FMU41 is a core model in the Endress+Hauser Prosonic M series of ultrasonic level transmitters, widely used for continuous level measurement in water treatment, chemical, petrochemical, and other industries. This article compiles the original manufacturer spare parts list for FMU41 and its series, including order numbers, specification descriptions, and applicable models, for reference by engineering technicians and procurement personnel.
Spare parts are divided by function into: connectors, seals, housing covers, terminal modules, power modules, electronic modules, display modules, probes, and installation accessories. All spare parts are marked with their corresponding order numbers and can be used directly for procurement orders.
Connectors and Sealing Components
Plug Connector (Order No. 52020763)
This plug connector is suitable for various transmitter series and is a commonly used spare part for on-site electrical connections.
- Cerabar S PMC71, PMP71/PMP75
- Deltabar S PMD70/PMD75, FMD76/FMD77/FMD78
- Deltapilot S FMB70
Sealing Kit (Order No. 52010526)
The sealing kit is used for sealing maintenance of the housing and sensor interfaces, containing O-rings and flat gaskets of various specifications, all made of EPDM, suitable for water and general chemical media.
| No. | Part Name | Specification | Quantity |
|---|---|---|---|
| 1 | O-ring | 113.9×3.53 EPDM | 1 |
| 2 | O-ring | 72.0×3.0 EPDM | 1 |
| 3 | O-ring | 49.21×3.53 EPDM | 1 |
| 4 | Flat gasket | 47×58×2 EPDM | 1 |
| 5 | Flat gasket | 59×68×2.5 EPDM | 1 |
| 6 | O-ring | 17.0×2.0 EPDM | 2 |
Screw Kit (Order No. 535720-9020)
Housing screw set, suitable for F12/T12/F23 housings, including:
- 1× set screw M5×10
- 1× fixing screw M8×10
Applicable models: FMR230/FMR231, FMR240/FMR244/FMR245, FMR250, FMU40/FMU41/FMU42/FMU43/FMU44.
Housing Covers and Protective Covers
Aluminum Cover (Order No. 517391-0011 / 52005936 / 518710-0020)
Aluminum housing cover with surface coating, equipped with EPDM O-ring. Different order numbers correspond to different housing types:
| Order No. | Applicable Housing | Applicable Models |
|---|---|---|
| 517391-0011 | F12/T12 | FMR230/FMR231, FMR240/FMR244/FMR245, FMR250, FMU40~FMU44 |
| 52005936 | F12/T12 (with VU331 display module) | Micropilot M/S, Prosonic M, Levelflex M |
| 518710-0020 | T3/T12 | FMR230/FMR231, FMR240/FMR244/FMR245, FMR250, FMR530~FMR533, FMR540, FMU40~FMU42 |
Protective Covers and Shields
- Shield (52005643): Cable compartment electronic-side cover, suitable for Micropilot M/S, Prosonic M, Levelflex M.
- Terminal compartment cover (52006026): Suitable for Micropilot M, Prosonic M, Levelflex M.
- Terminal compartment cover (52019062): Terminal compartment cover for remote display.
- O-ring (71092209): Suitable for T12/F12/F23 housing covers.
Terminal Modules and Power Modules
Terminal Modules
Terminal modules are among the most frequently replaced FMU41 spare parts. Different communication protocols and housing types correspond to different order numbers:
| Order No. | Specification Description | Applicable Housing/Protocol |
|---|---|---|
| 52006197 | With cable connection | F12 housing, Micropilot M, Levelflex M, Prosonic M |
| 52012156 | PROFIBUS PA / FOUNDATION Fieldbus | Micropilot II/M, Prosonic M, Levelflex M |
| 52013302 | Standard type | T12 housing, Levelflex M, Prosonic M, Micropilot M |
| 52013303 | 2-wire, PROFIBUS PA/FF, Ex d power limiter | T12 housing |
| 52018949 | 4-pole, 2-wire, with overvoltage protection (OVP) | Aluminum T12 housing |
| 52018950 | 2-pole, 2-wire, PROFIBUS PA/FF, with OVP | Aluminum T12 housing |
Power Modules
Power modules are used for 4-wire electronic modules, suitable for Levelflex M and Prosonic M series. The following order numbers all correspond to 4-wire power supply:
- 52013304
- 52013305
- 52015585
- 52015586
Power module 90-250VAC (71396869): HART communication, version 2, only suitable for non-hazardous areas, applicable to FMU40~FMU44.
Electronic Modules and Display Modules
Electronic Modules
Electronic modules are the core processing units of level transmitters. When selecting, it is necessary to confirm the communication protocol and explosion-proof rating.
| Order No. | Output Signal/Protocol | Version | Explosion-proof | Applicable Models |
|---|---|---|---|---|
| 71025602 | 4-20mA | 4.0 | — | FMU40/FMU41/FMU42 |
| 71344231 | 4-20mA | 4.02 | Ex | FMU40/FMU41/FMU42/FMU44 |
| 71344233 | PROFIBUS PA | 4.02 | Ex | FMU40~FMU44 |
| 71462298 | FOUNDATION Fieldbus | 4.02.2 | Ex | FMU40~FMU44 |
Display Modules
- Display module VU331 (71386715): 4-line alphanumeric display, version 3, suitable for FMU40~FMU44.
- Remote display FHX40: Integrated remote display and local operation, aluminum field housing IP65 NEMA4X, 4-line LC display, menu-driven plain text operation, language selection and on-site envelope curve display. Suitable for Micropilot M, Prosonic M, Levelflex M, Gammapilot M.
Probes and Installation Accessories
Ultrasonic Probes
- 52010508: With threaded connection, suitable for Prosonic M.
- 52010510: With threaded connection, sealing gasket, and hex nut, suitable for Prosonic M.
- 52000598: Plastic ring/hex nut SW70 G2, black PC material, for 2" sensors, suitable for Prosonic T/M.
Mounting Brackets and Sensor Supports
| Order No. | Description | Material | Applicable Models |
|---|---|---|---|
| 71452321 | Sensor support 500mm, 2" sensor | 316L | FMR20, FMU30, FMU41 |
| 71452322 | Sensor support 1000mm, 2" sensor | 316L | FMR20, FMU30, FMU41 |
| 71452325 | Mounting bracket 250×400×120 G2 | 316L | FMR20, FMU30, FMU41 |
| 919792-0000 | Sensor support wall mounting bracket | Galvanized steel | FMR10, FMR20 |
| 543199-0001 | Housing protective cover T12/F12 | 316Ti | Micropilot M/S, Prosonic M, Levelflex M |
Remote Display Adapters and Cables
- 52018204: Adapter for converting F12 housing + 2-wire electronic module to remote display, non-hazardous areas only, FHX40 must be ordered separately.
- 52018205: Adapter for converting F12 housing + 4-wire electronic module to remote display, non-hazardous areas only, FHX40 must be ordered separately.
- 52016334 / 71020502 / 71020503 / 71020504: Double-shielded connection cables for FHX40 display.
- 52013874: Mounting bracket for remote display FHX40.
Commissioning Tools and Communication Interfaces
ToF Adapter FXA291 (71007843)
Used to connect Micropilot M/S, Levelflex M, Prosonic M, Tank Side Monitor, Deltabar S, Cerabar S, Gammapilot M, Micropilot I, and other instruments to Commubox FXA291.
Adapter Cable (71000221)
Used to connect service tool RS232 (52013675) or ToF adapter FXA291 to Micropilot M, Prosonic M, Levelflex M, Cerabar S, Deltabar S.
Communication Interface FXA195
USB interface HART modem, used to connect HART field devices to a computer, in conjunction with software tools for instrument commissioning.
- Can connect to intrinsically safe signal circuits
- Complies with SIL2, IEC61508 standards
Spare Parts Selection Notes
- Confirm instrument model and housing type: Common housings for FMU41 are F12 and T12; different housings correspond to different spare part order numbers.
- Confirm communication protocol: 4-20mA, PROFIBUS PA, and FOUNDATION Fieldbus correspond to different electronic modules and terminal modules.
- Confirm explosion-proof rating: Ex-certified spare parts must be selected for hazardous areas; standard types can be used in non-hazardous areas.
- Confirm wiring system: Power modules and terminal modules for 2-wire and 4-wire systems cannot be mixed.
- Remote display modification: Both the adapter and FHX40 display must be ordered, and only for non-hazardous areas.
It is recommended to verify the complete model code on the instrument nameplate before procurement, or consult the supplier's technical support to ensure spare parts match exactly.