音叉限位开关
Technical Data
CompareDensity
| Measuring Principle | Vibration Density |
| Product Headline | Vibronic point level switch with optional extension tube for liquid applications in hazardous areas . Reliable density measurement values not affected by: changing media properties, gas bubbles, foam, build-up, flow or turbulences. |
| Characteristic / Application | Compact vibronic device with an optional pipe extension up to 6 m (19.7 ft), Modular housing concept, Wide range of certificates |
| Ambient temperature | -60 °C...+70 °C (-51 °F...+158 °F) |
| Process temperature | -50 °C...+150 °C (-58 °F...+302 °F) |
| Process pressure | Vacuum...100 bar Vacuum...1450 psi |
| Wetted parts | 316L Alloy |
| Sensor length | Up to 6 m (19.7 ft) |
| Certificates / Approvals | ATEX, IEC Ex, CSA, NEPSI, KC, JPN Ex, INMETRO |
| Specialities | Heartbeat Technology, Bluetooth® Operation and maintenance SmartBlue App, LED Module, RFID TAG for easy identification, Second line of defense, Ambient temperature down to -50°C (-60°C optional), Temperature spacer for high process temperature, Plug and play functionalities |
| Components | Density Computer FML621 |
| Measuring range | Density range: 0.3 to 2 g/cm³ |
| Other approvals and certificates | Overfill protection WHG SIL2/ SIL 3 according to IEC 61508 |
Point Level / Liquids
| Measuring Principle | Vibration Liquids |
| Characteristic / Application | Compact vibronic device with an optional pipe extension up to 6 m (19.7 ft); Modular housing concept; Wide range of certificates |
| Specialities | Heartbeat Technology, Bluetooth® Operation and maintenance SmartBlue App, LED Module, RFID TAG for easy identification, Second line of defense, Ambient temperature down to -50°C (-60°C optional), Temperature spacer for high process temperature, Plug and play functionalities |
| Supply / Communication | 19...253V AC / 2-wire, 10...55V / DC-PNP 3-wire, 9...20V DC with relay DPDT, 19...253V AC or 19...55V DC with relay DPDT, 2-wire NAMUR, 2-wire PFM, 4-20mA HART |
| Ambient temperature | -60 °C...+70 °C (-51 °F...+158 °F) |
| Process temperature | -50 °C...+150 °C (-58 °F...+302 °F) |
| Process pressure / max. overpressure limit | Vacuum...100 bar Vacuum...1450 psi |
| Min. density of medium | 0.5 g/cm³ (0.4 g/cm³ optional) |
| Main wetted parts | 316L Alloy |
| Process connection | Threads: G3/4A, G1A, R3/4", R1, NPT3/4, NPT1 Flanges: DN25...DN100 ASME 1"...4" JIS 25A...100A |
| Process connection hygienic | Tri-Clamp ISO2852 |
| Sensor length | Up to 6 m (19.7 ft) |
| Communication | 2-wire direct load HART DC-PNP 3-wire Relays NAMUR PFM Bluetooth® wireless technology |
| Certificates / Approvals | ATEX, IEC Ex, CSA, NEPSI, KC, JPN Ex, INMETRO, UK Ex |
| Safety approvals | Overfill protection WHG SIL2/ SIL 3 according to IEC 61508 |
| Design approvals | EN 10204-3.1 NACE MR0175, MR0103 ASME B31.3 Process Piping AD2000 CRN AD 2000 |
| Marine approval | ABS/ LR/ BV/ DNV |
| Options | Heavy duty stainless steel housing |
| Components | FTL325P Interface PFM FTL325N Interface NAMUR |
The new-generation Liquiphant FTL51 is a limit switch dedicated to industrial process applications, designed in accordance with IEC 61508 and easily meeting SIL2 and SIL3 application requirements. An intuitive setup wizard helps users regularly perform SIL or WHG self-tests and automatically generates verification documentation.
Liquiphant measures reliably and is unaffected by changes in medium properties, turbulence, bubbles, foam or buildup.
Advantages
Diagnostics: permanent diagnostic functions increase plant safety. Connect the device via the SmartBlue App for easy online diagnostics
Verification: verify the device without interrupting the process. Query device status via the smart device.
Monitoring: online monitoring of the fork vibration frequency and real-time acquisition of sensor parameters for predictive maintenance and process optimization
Heartbeat Technology identifies signs of corrosion directly and at an early stage
Quick and easy periodic self-test at the push of a button using the setup wizard
No calibration required. Plug-and-play
Designed in accordance with IEC 61508, fully meeting the requirements of SIL2 and SIL3 applications
Application
Limit switch with extension tube, suitable for limit detection of all kinds of liquids.
Process connections: threaded, flanged and hygienic connections (Tri-Clamp)
Temperature range: -50...+150°C (-58...+302°F)
Pressure range: -1...+100 bar (-14.5...+1450 psi)
Sensor material: 316L, alloy
International explosion protection, WHG overfill protection, SIL and marine approvals
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Source:Endress+Hauserwebsite public information
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Tuning Fork Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Tuning Fork.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tuning Fork for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Tuning Fork Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Tuning Fork.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tuning Fork for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Tuning Fork Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Tuning Fork.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tuning Fork for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Tuning Fork Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Tuning Fork.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Tuning Fork for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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Endress+Hauser