音叉限位开关
Technical Data
ComparePoint Level / Liquids
| Measuring Principle | Vibration Liquids |
| Characteristic / Application | Reliable point level switch with extension pipe for MIN and MAX safety applications up to SIL3. Dual Sealing / Second line of defense Modular housing concept |
| Specialities | Outstanding features: - permanent LIVE signal monitors function safety - failsafe design and - high availability of the measuring values |
| Supply / Communication | 2-wire 4...20 mA |
| Ambient temperature | -60°C...+70°C (-76°F...+160°F) |
| Process temperature | -60°C...+280°C (-76°F...+540°F) |
| Process pressure / max. overpressure limit | Vacuum...100 bar (1450 psi) |
| Min. density of medium | Density from 0.4 g/cm3 (0.4 SGU) |
| Main wetted parts | 316L Alloy C |
| Process connection | Flange: DN25...DN100, ASME 1"...4", JIS 10K...20K Thread: G3/4, G1, R3/4, R1, MNPT3/4, MNPT1 |
| Sensor length | Extension pipe up to 3 m (9.8 ft) |
| Communication | 2-wire 4...20 mA |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US, IEC Ex, NEPSI, EAC |
| Safety approvals | Overfill protection WHG Leakage Detection SIL3 |
| Design approvals | EN 10204-3.1 NACE MR0175, MR0103 ASME B31.3 AD2000 |
| Marine approval | GL/ ABS/ LR/ BV/ DNV |
| Options | PWIS free Pressure tight feed through Weather protection |
| Components | Nivotester FTL825, Transmitter |
The Liquiphant FTL81 vibronic point level switch can be used in hazardous areas, has various international approvals, and combines fail-safe and overflow protection functions with SIL3 functional safety. The measured value is reliable and unaffected by changes in medium properties, flow, turbulence, bubbles, foam, vibration or buildup.
Benefits
Suitable for safety systems requiring SIL2/SIL3 functional safety, in accordance with IEC 61508 Ed.2.0 / IEC 61511-1 / ISA 84-1 / DIN EN ISO 13849
Verification test: verification test interval 12 years, one-key test of the entire loop
Permanent self-monitoring/internal redundancy
4-20 mA interface (per NAMUR NE 06/NE 43): easy integration via a two-channel switching unit (safety contacts) output and latching function (Nivotester FailSafe FTL825), or direct integration with a safety PLC
No calibration required: fast and economical device startup
No mechanical moving parts, no maintenance, no wear and a long service life.
Monitors the fork for damage, corrosion, buildup and mechanical blockage
Application areas
Liquid point level switch with functional safety up to SIL3.
Process connection: thread and flange
Temperature: -60 ~ +280 °C (-76 ~ +540 °F)
Pressure: -1 ~ +100 bar (-14.5 ~ +1,450 psi)
Sensor length: extension tube up to a maximum of 3 m (9.8 ft)
Sensor material: 316L, Alloy C
International explosion protection approval, WHG overflow protection, SIL, marine approval
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Source: public information from the Endress+Hauser website
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。
