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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Technical documentation
Technical data
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Accessories/Spare parts
Source:Endress+Hauserwebsite public information
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Case Studies
市政污水处理污水处理厂 · 音叉应用案例
项目背景
市政污水处理客户在污水处理厂环节，长期面临「出水水质监测精度不足、仪表易受污染导致数据漂移，影响达标排放」的困扰，对音叉的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的音叉，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应市政污水处理复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
食品饮料食品生产线 · 音叉应用案例
项目背景
食品饮料客户在食品生产线环节，长期面临「卫生级测量要求高，在线仪表需耐 CIP/SIP 清洗且精度稳定」的困扰，对音叉的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的音叉，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应食品饮料复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
化工制药反应釜与储罐 · 音叉应用案例
项目背景
化工制药客户在反应釜与储罐环节，长期面临「介质腐蚀性强、工况复杂，仪表需耐腐蚀且防爆」的困扰，对音叉的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的音叉，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应化工制药复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
电力能源电厂锅炉与汽机 · 音叉应用案例
项目背景
电力能源客户在电厂锅炉与汽机环节，长期面临「高温高压工况下测量不稳定，维护停机成本高」的困扰，对音叉的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的音叉，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应电力能源复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
