FTL51C Tuning Fork Level Switch Spare Parts Overview
FTL51C is a classic model in the E+H Liquiphant series of tuning fork level switches, widely used in industrial level measurement. To ensure long-term stable operation of the equipment, timely replacement of worn or faulty spare parts is crucial. This article compiles a complete spare parts list for the FTL51C, including housing covers, seal kits, electronic inserts, cable entries, etc., and provides order numbers and specifications for quick selection by engineering technicians and procurement personnel.
Spare Parts List and Specifications
The following spare parts are grouped by category, including order numbers, specification descriptions, and applicable housings. Please select the corresponding spare parts according to the actual equipment model and working conditions.
Housing Covers and Sight Glass Covers
Housing covers protect internal electronic components. Different materials and sealing forms are suitable for different environments. Sight glass covers facilitate observation of internal status, and attention must be paid to restrictions in hazardous areas.
| Order Number | Specification | Applicable Housing/Remarks |
|---|---|---|
| 52002698 | Aluminum cover, O-ring EPDM | Aluminum housing F13, Ex d |
| 52002699 | Aluminum cover, O-ring EPDM | Aluminum housing F17 |
| 52005266 | Stainless steel cover | Stainless steel housing 316L, Liquiphant M |
| 52006903 | Aluminum cover, O-ring EPDM | Aluminum housing, Liquiphant M/S, Liquicap M, Soliphant M |
| 52025606 | Plastic cover, Gasket EPDM | Polyester housing |
| 52025790 | Transparent cover, Gasket EPDM | Polyester housing |
| 52027000 | Stainless steel cover, Gasket 67.5x2.9x1.5 VMQ/PTFE | Stainless steel housing F15 |
| 52027002 | Sight glass cover with gasket, Sight glass: glass, Gasket 67.5x2.9x1.5 VMQ/PTFE | Stainless steel housing F15 |
| 52028207 | Sight glass cover with gasket, Sight glass: Polycarbonate PC, Gasket 67.5x2.9x1.5 VMQ/PTFE | Non-hazardous area (EEx ia), stainless steel housing F15 |
| 71114754 | Cover, Material: 316L, O-ring 70.0x3.0 EPDM | Stainless steel housing F27, FTL50/FTL51/FTL51C, FTL70/FTL71, FTL80/FTL81/FTL85 |
| 52007103 | Aluminum cover, O-ring EPDM | Terminal compartment, aluminum housing T13 |
Seal Kits and O-rings
Seal kits ensure the protection class and explosion-proof performance of the housing and must be inspected and replaced regularly. Different materials (EPDM, FKM, VMQ/PTFE) are suitable for different media and temperatures.
| Order Number | Specification | Applicable Housing/Remarks |
|---|---|---|
| 52004137 | O-ring, Cover seal set | Polyester housing F16 |
| 52004277 | Seal kit, 10x O-ring 70.0x3.0 EPDM | Universal |
| 52008495 | Seal kit, for cover | Universal |
| 52028179 | Gasket, Profile gasket for cover | Stainless steel housing F15 |
| 71114756 | Seal kit, 3x O-ring 70.0x3.0 FVQM | FTL50/FTL51/FTL51C, FTL70/FTL71, FTL80/FTL81/FTL85 |
Adapters and Fixing Kits
Adapters are used to connect the housing and process connection to ensure stable installation. Fixing kits include sealing rings and adapter rings for specific models.
| Order Number | Specification | Applicable Housing/Remarks |
|---|---|---|
| 52004236 | Adapter, Fixing set: securing ring 301, adapter ring PPA | Liquiphant M/Liquiphant S |
| 52004133 | Adapter | Polyester housing F16 |
| 52004134 | Adapter | Polyester housing F16 |
| 52004135 | Adapter | Polyester housing F16 |
Cable Entries and Cable Glands
Cable entries ensure cable sealing and explosion protection, offering thread options such as M20, G1/2, and NPT1/2. Cable glands include cable sealing fittings and blind plugs.
| Order Number | Specification | Applicable Housing/Remarks |
|---|---|---|
| 52002447 | Cable entry, adapter M20 > G1/2, 304, gasket NBR, blind plug G1/2 | Cerabar M, Liquiphant M |
| 52002448 | Cable entry, adapter M20 > NPT1/2, 304, gasket NBR, plug NPT1/2 | Cerabar M, Liquiphant M |
| 52004278 | Cable gland, cable gland M20, O-ring FKM, plug Pg11 PA | Universal |
Electronic Inserts
The electronic insert is the core component of the level switch and is selected according to the output signal and power supply method. The following inserts are suitable for Liquiphant M/Liquiphant S (HT).
| Order Number | Specification | Applicable Model/Remarks |
|---|---|---|
| 52002304 | Electronic insert, Level switch 2-wire | Liquiphant M/Liquiphant S (HT) |
| 52002305 | Electronic insert, Level switch 3-wire | Liquiphant M/Liquiphant S (HT) |
| 52002306 | Electronic insert, 19-253VAC/19-55VDC | Liquiphant M/Liquiphant S (HT) |
| 52002307 | Electronic insert, Level switch 2-wire 4-20mA | Liquiphant M/Liquiphant S (HT) |
| 52002308 | Electronic insert, Level switch 2-wire | Liquiphant M/Liquiphant S (HT) |
| 52002309 | Electronic insert, Level switch 2-wire | Liquiphant M/Liquiphant S (HT) |
| 52006454 | Electronic insert, Level switch 2-wire + push button | Liquiphant M/Liquiphant S (HT) |
| 71027201 | Electronic insert, Liquiphant M | For combination with FML621 |
| 71074953 | Electronic insert, PROFIBUS PA, Hardware version 02.00, Software version 01.03.00, Current consumption: 12.5mA+/-1.0mA | FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71 |
Accessories and Tools
Accessories include lubricant, sunshade, and nameplate for maintenance and identification. The sunshade protects the instrument from direct sunlight and extends its service life.
| Order Number | Specification | Applicable Model/Remarks |
|---|---|---|
| 52005977 | Lubricant, Lubricant "SYNTHESO GLEP1" (tube a 8g) | Universal |
| 71127760 | Sunshade | FDR56, FMI21, FMI51/FMI52, FQR56, FTI51/FTI52/FTI55/FTI56, FTI77, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, FTM20/FTM21, FTM50/FTM51/FTM52, FTR20, FTW31/FTW32/FTW33 |
| 71040497 | Sunshade | FMI51/FMI52, FTI51/FTI52/FTI55/FTI56, FTI77, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, FTM20/FTM21, FTM50/FTM51/FTM52 |
| 71067434 | Change nameplate, Blank | For filling in new order number after modification of non-explosion-proof instruments, applicable to FMB50/FMB51/FMB52, FMR230/FMR231, FMR240/FMR244/FMR245, FMR250, FMR530/FMR532, FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71, FTL80/FTL81/FTL85, NMR81, PMC51, PMC71, PMP51/PMP55 |
Precautions for Spare Parts Selection
When selecting spare parts, be sure to verify the equipment model, housing type, and explosion-proof rating. The following points help you select accurately:
- Housing material and model: Spare parts for aluminum housings, stainless steel housings, and polyester housings are not interchangeable and must be confirmed according to the nameplate.
- Explosion-proof area: For explosion-proof areas such as Ex d and EEx ia, spare parts with corresponding certifications must be selected. For example, sight glass cover 52028207 is only suitable for non-hazardous areas.
- Seal material: EPDM, FKM, and VMQ/PTFE are suitable for different media and temperatures. Please select according to working conditions.
- Electronic insert compatibility: Confirm the output signal (2-wire, 3-wire, 4-20mA, PROFIBUS PA) and supply voltage to ensure compatibility with the control system.
- Order number uniqueness: Each spare part has a unique order number. Please provide the complete order number when ordering to avoid errors.
Frequently Asked Questions (FAQ)
How to determine the housing type of FTL51C?
The housing type is usually marked on the instrument nameplate, such as F13, F17, F15, F16, F27, etc. It can also be determined by the appearance material: aluminum housing, stainless steel housing, or polyester housing.
Which models are supported by electronic insert 71074953?
71074953 is a PROFIBUS PA electronic insert, suitable for FTL50/FTL50H/FTL51/FTL51C/FTL51H, FTL70/FTL71. Hardware version 02.00, software version 01.03.00, current consumption 12.5mA±1.0mA.
What does seal kit 52004277 include?
52004277 includes 10 O-rings, size 70.0x3.0, material EPDM. Suitable for seal replacement of various housings.
Summary
This article provides a complete spare parts list for the FTL51C tuning fork level switch, covering key components such as housing covers, seal kits, and electronic inserts. Correct selection of spare parts ensures reliable operation of the equipment and extends its service life. For more technical information, please refer to the E+H official documentation or contact the supplier.