Technical Data
ComparePoint Level / Liquids
| Measuring Principle | Capacitive Liquid |
| Characteristic / Application | Capacitive Rope probe |
| Specialities | Interface detection Foam detection |
| Ambient temperature | -50 °C ... +70 °C (-58 °F ... +158 °F) With separate housing: -50 °C ... +120 °C (-58°F ... +248 °F) |
| Process temperature | -80 °C ... +200 °C (-112 °F ... +392 °F) |
| Process pressure / max. overpressure limit | Vacuum ... 100 bar (Vacuum ... 1450 psi) |
| Main wetted parts | Insulation material: FEP, PFA 316L |
| Process connection | G 3/4 ... 1 1/2 NPT 3/4 ... 1 1/2 Flange from DN25.../ASME 1".../JIS 10K... |
| Process connection hygienic | Tri-Clamp ISO2852 gap free plated Dairy coupling Flush mount |
| Sensor length | Total length of probe: max 12m (39 ft) |
| Communication | 2- wire 19-253 VAC 3-wire PFM Relay DPDT DC-PNP 8/16 mA |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US, IEC Ex, TIIS, INMETRO, NEPSI, EAC |
| Safety approvals | Overfill prevention WHG SIL |
| Design approvals | EN 10204-3.1 NACE MR0175 |
| Marine approval | GL/ ABS/ DNV |
| Options | Inactive length Active build-up compensation Separate housing |
| Components | Transmitter PFM: FTC325, FTC625, FTC470Z, FTC471Z 3-wire: FTC325 |
| Application limits | Notice the pressure and temperature derating. Notice for non conductive medium the DK. |
The Liquicap FTI52 uses a cable probe and can be used for limit detection of highly viscous liquids and liquids prone to buildup, as well as for interface and foam detection of conductive liquids. The FTI52 has buildup compensation for reliable measurement. The probe has obtained international approvals from various relevant industries and has a wide range of applications. Wetted parts use corrosion-resistant materials and FDA-approved materials to meet the highest safety standards.
Advantages
Fast and simple calibration and commissioning by key operation
Various approvals and permits for a wide range of applications
Wetted parts use corrosion-resistant materials and FDA-approved materials
Two-stage overvoltage protection prevents vessel discharge (gas discharge tube + protective diode)
Short response time of the measured value
No calibration required after electronics replacement
Automatic electronics monitoring
Areas of application
The Liquicap M FTI51 is preferably used in the following measurement applications:
Applications with high viscosity and buildup tendency
Interface detection between different liquids (e.g. oil/water interface)
Two-point control via one process connection (pump control), foam detection of conductive liquids
The probe has a robust, proven construction (self-sealing cone) and can be used in applications from vacuum to overpressure up to 100bar
Spare Parts & Accessories 42
42 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 52002698 | Aluminum coverO-ring EPDM for Aluminium housing F13, Ex d | Details |
| 52002699 | Aluminum coverO-ring EPDM for Aluminium housing F17 | Details |
| 52006903 | Aluminum coverO-ring EPDM for Aluminium housing Liquiphant M/S, Liquicap M, Soliphant M | Details |
| 52025606 | plastic coverGasket EPDM Polyester housing | Details |
| 52027000 | Stainless Steel CoverGasket 67,5x2,9x1,5 VMQ/PTFE Stainless steel housing F15 | Details |
| 52007103 | Aluminum coverO-ring EPDM for terminal compartment Aluminium housing T13 | Details |
| 52004137 | O-ringCover seal set Polyester housing F16 | Details |
| 52004277 | Seal kitconsists of: 10x O-ring 70,0x3,0 EPDM | Details |
| 52008495 | Seal kitfor cover | Details |
| 52028179 | gasketProfile gasket for cover Stainless steel housing F15 | Details |
| 71084478 | Separate Type Cable F15/F16/F17, FTIxxConnection sensor > separate housing. Length: 6m. Housing adapter, cable gland. Usage: separate housing, FTI51/FTI52/ FTI55/FTI56, FTI77. | Details |
| 71025814 | electronic plug-in module19-253VAC, 19-55VDC Liquicap M FTI51/52 | Details |
| 71025815 | electronic plug-in moduleLiquicap M FTI51/52 | Details |
| 71025816 | electronic plug-in moduleLiquicap M FTI51/52 | Details |
| 71025819 | electronic plug-in module3-wire PNP Liquicap M FTI51/52 | Details |
| 71025820 | electronic plug-in module3-wire Liquicap M FTI51/52 | Details |
| 71042887 | electronic plug-in module2-wire. Usage: FTI51/FTI52/FTI55/FTI56, FTI77. | Details |
| 71100895 | electronic plug-in module8/16mA, 11-36VDC. Usage: FTI51/FTI52/FTI55/FTI56, FTI77. | Details |
| 71020804 | Terminal moduleUsage: FMI51/FMI52, FTI51/FTI52/FTI55/FTI56, FTI77. | Details |
| 942901-0001 | Rope shortening kit FMI52/FTI52PTFE version. Usage: FMI52, FTI52. | Details |
Configurator / Comparison
Measuring principle video
Click to playManuals & Documents 12
All documents for this model12 documents · click to expand
Liquicap M FTI51, FTI52 Chinese
Liquicap M FTI51, FTI52 Chinese
BA Liquicap M FTI52 Chinese
Operating Instructions Liquicap M FTI51, FTI52 English
BA Liquicap M FTI52 English
Liquicap M FTI51, FTI52 Operating Instructions English
TI 焊接接头、过程转接头和法兰 Chinese
技术资料 Liquicap M FTI51, FTI52 Chinese
TI Liquicap M FTI52 Chinese
TI Weld-in adapter, process adapter and flanges English
Technical Information Liquicap M FTI51, FTI52 English
TI Liquicap M FTI52 English
Case Studies
Municipal Wastewater Treatment · capacitors — Application Case
Customer Profile
The typical setting in Municipal Wastewater Treatment is the inlet, biological and outlet stages of a municipal plant. The measuring point is capacitors; the focus is capacitive sensing of level, interface or point limit.
Key Difficulties
Conditions are high solids and corrosive fractions, with large diurnal flow swings and, on top of that, effluent parameters drift and probes foul with sludge and biofilm, which a standard configuration cannot handle for long. The design therefore starts with choosing rod, cable or plate probes by dielectric constant and build-up tendency.
Implementation
The scope ran through the level range: level solution matched to the actual tank and silo geometry. Technically it hinges on choosing rod, cable or plate probes by dielectric constant and build-up tendency, and on these requirements: stable compliance with Grade 1A discharge limits and online data reporting.
Customer Benefit
In practice this means reliable detection despite build-up, with far fewer false alarms, which cut the workload on the site maintenance team.
Food & Beverage · capacitors — Application Case
Project Background
The project covers dosing, pasteurising, filling and CIP stages. The work centres on capacitors and the core task is capacitive sensing of level, interface or point limit.
Operating Challenges
The medium and duty are characterised by syrups, dairy and beverages that scale easily, under strict hygienic requirements, and frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. So capacitors cannot be specified generically — it calls for choosing rod, cable or plate probes by dielectric constant and build-up tendency.
Solution
The Ainstru engineering team worked through the level range: level solution matched to the actual tank and silo geometry. The configuration involves choosing rod, cable or plate probes by dielectric constant and build-up tendency, with these requirements in view: food-safety and hygienic design per 3-A / EHEDG.
Results
Since start-up the system has run steadily; the practical result is reliable detection despite build-up, with far fewer false alarms.
Chemical & Pharmaceutical · capacitors — Application Case
Project Overview
The site is reactors, metering vessels and finished-product tanks. The customer wanted capacitors properly configured on the existing plant, with the aim of capacitive sensing of level, interface or point limit.
Technical Challenges
What actually causes trouble is highly corrosive media with solvents and crystallisation, partly in explosive atmospheres, and corrosion plus Ex protection shortens instrument life and makes downtime costly. All of this means the capacitors configuration has to involve choosing rod, cable or plate probes by dielectric constant and build-up tendency.
Configuration
Supply and installation were organised through the level range: level solution matched to the actual tank and silo geometry. On site this meant choosing rod, cable or plate probes by dielectric constant and build-up tendency, checked line by line against: Ex certification and GMP traceability of records.
Performance
After commissioning the outcome is reliable detection despite build-up, with far fewer false alarms, and the readings are now used for process tuning.
Power & Energy · capacitors — Application Case
Site Conditions
This is a Power & Energy customer whose plant is at boiler feedwater, turbine condensate and FGD/DeNOx systems. The main task was capacitive sensing of level, interface or point limit.
The Problem
The difficulty lies in high temperature and pressure with both steam and saline water; at the same time drift under high temperature and pressure, with very costly unplanned outages. Specification therefore means choosing rod, cable or plate probes by dielectric constant and build-up tendency.
What We Did
We took a level range approach — level solution matched to the actual tank and silo geometry. Delivery was built around choosing rod, cable or plate probes by dielectric constant and build-up tendency, with point-by-point checks on: compliance with power-industry codes and unit availability targets.
Operating Outcome
In service the system performs as intended — reliable detection despite build-up, with far fewer false alarms, with routine maintenance falling noticeably.
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