E+H FTL51B-37441/0 Liquiphant FTL51B Extended Probe Vibronic Tuning Fork Level Switch
Product Details:
Manufacturer : Endress+Hauser
Product No. : FTL51B-37441/0
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This industrial automation component is supplied for enterprise procurement .Made-to-order and forward delivery are supported, with pricing quoted per inquiry.
To reduce sourcing risk, each order is handled individually with support for model confirmation, condition clarification, and lead time estimation before order placement. Clear quotation terms and consistent communication are provided to help partners manage expectations and complete transactions with confidence. Additional verification or clarification is available when required, supporting professional procurement and long-term cooperation.
The E+H FTL51B-37441/0, shorthand search term FTL51B 37441 0, belongs to the upgraded Liquiphant FTL51B vibronic tuning fork series from Endress+Hauser, specially designed with a custom extended probe assembly for deep tank, vertical vessel and underground pit liquid limit monitoringEndress+Hauser. This model features a full 316L stainless steel wetted construction, universal digital electronic insert with optional Bluetooth SmartBlue and HART communication, and integrated Heartbeat Technology for continuous self-diagnostics without process shutdown.
Detail:
| Parameter Group |
Specification Item |
Official Datasheet Standard Value |
| Measuring Core Technology |
Sensing Principle |
Vibronic piezoelectric tuning fork resonance frequency shift |
| Liquid Medium Detection Limits |
Minimum Detectable Medium Density |
0.5 g/cm³ (0.4 g/cm³ adjustable via device configuration) |
| Liquid Medium Detection Limits |
Maximum Permissible Medium Viscosity |
≤ 10,000 mm²/s |
| Liquid Medium Detection Limits |
Max Suspended Solid Particle Size |
≤ Ø5 mm |
| Process Operating Temperature |
Standard Working Range |
-50 °C ~ +150 °C (-58 °F ~ +302 °F) |
| Process Absolute Pressure |
Full Working Pressure Window |
Vacuum to 100 bar (Vacuum to 1450 psi) |
| Power Supply Input Range |
Universal DC Supply Voltage |
10.5 V DC ~ 35 V DC; Ex ia variant limited to 10.5–30 V DC |
| HART 2-Wire Loop Output |
Signal Current Range |
4–20 mA, dead time 100 ms, configurable time constant 0–999 s |
| PNP/NPN 3-Wire Transistor Output |
Max Switching Load Current |
350 mA, short-circuit & overload pulsed protection |
| DPDT Relay Output Contact Rating |
AC / DC Load Capacity |
253 V AC / 5 A; 55 V DC / 5 A resistive load |
| NAMUR Intrinsic Safety Output |
Standard Signal Levels |
8 mA (covered) / 16 mA (uncovered), 11–36 V DC supply |
| Switch Response Delay |
Liquid Submerge / Expose Trigger Time |
200 ms ~ 800 ms adjustable digital dead time |
| Integrated Diagnostic System |
Heartbeat Monitoring Items |
Fork fracture detection, circuit fault, corrosion tracking, power loss alarm |
| SIL Proof Test Function |
Test Execution Methods |
Front test button, external magnetic pin, SmartBlue App guided wizard |
| EMC Compliance Standards |
Electromagnetic Compatibility Certifications |
IEC 61326, NE 21 heavy industrial environment standard |
| Bluetooth Communication (Optional) |
Wireless Operating Frequency |
2.4 GHz BLE, parameterization & diagnostic data access via SmartBlue App |
| Classification Category |
Attribute Item |
Standardized Technical Parameter |
| Model-Specific Probe Design |
FTL51B-37441/0 Feature |
Custom extended straight 316L stainless steel measuring rod assembly |
| Wetted Construction Materials |
Tuning Fork & Extension Rod |
1.4404 / 316L stainless steel, non-hygienic standard surface finish |
| Process Connection Compatibility |
Supported Flange/Thread Types |
DN25–DN100 EN flanges, NPT/G/R threaded ports, Tri-Clamp hygienic adapters |
| Standard Cable Gland Interface |
Wiring Entry Port |
M20 cable gland, optional NPT 1/2" adapter |
| Enclosure Protection Rating |
Ingress Protection Class |
IP66 / IP67 per EN 60529; Ex d flameproof variant supports IP68 |
| Standard Housing Material |
Non-Wetted Enclosure Body |
Cast aluminum with polyester anti-corrosion coating |
| Ambient Operating Temperature |
Cabinet Installation Range |
-60 °C ~ +70 °C (-51 °F ~ +158 °F) |
| Long-Term Storage Temperature |
Offline Storage Limit |
-50 °C ~ +80 °C (-58 °F ~ +176 °F) |
| Mechanical Vibration Resistance |
Vibration Test Standard |
IEC 60068-2-64, 5–2000 Hz, 50 m/s² RMS sustained vibration |
| Mechanical Shock Resistance |
Shock Load Rating |
IEC 60068-2-27, 300 m/s² peak shock for 18 ms duration |
| Functional Safety Grade |
SIL Certification Level |
SIL 2 / SIL 3 per IEC 61508 & IEC 61511 process safety standards |
| Overfill Safety Approval |
Tank Protection Certification |
WHG German water resource law certified for environmental overfill prevention |
| Global Hazardous Zone Certifications |
Explosion Protection Approvals |
ATEX II 1/2G Ex ia / Ex d, IECEx, FM, CSA C/US, NEPSI, KC, INMETRO |
| Marine & Special Industry Approvals |
Additional Compliance Marks |
DNV marine vessel approval, NACE MR0175 sour media service compatible |
| Allowable Mounting Orientation |
Installation Flexibility |
Vertical downward, vertical upward, horizontal flange mounting on vessels/pipes |
| Visual Status Indication |
Onboard LED Feedback |
Green power LED, yellow liquid detection LED, red diagnostic fault LED |
Brand
E+H is a global leader in providing measurement instruments, services, and solutions for the process and laboratory industries. Since its founding in 1953, the company has been committed to enhancing production efficiency, safety, and sustainability through innovative technologies. E+H’s product portfolio covers a wide range of areas, including flow measurement, level measurement, pressure and temperature measurement, analytical instrumentation, and data management. Its solutions are widely used in industries such as chemicals, food and beverage, oil and gas, power generation, and water and wastewater treatment.
Company Introduction:
Achievers Automation Limited has more than 10 years experience in the market of Industrial Automation, specialized in reselling factory sealed Probe, Sensor, DCS,isolator barrier, HMI, PLC,Adapter,Profibus connector and cable from Brands as BENTLY NEVADA, E+H, MTL, AB, Pepperl+Fuchs, YOKOGAWA, ASCO, Schneider, Lenze, Pro-face, Mitsubishi, Omron, Lenze, Delta, IFM etc. If you have any request, please do not hesitate to contact us.
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FAQ of Achievers
Q:Are the Products Genuine OEM Units?
A: These items have been certified by Achievers Automation Limited to be genuine OEM Units obtained through OEM or independent third-party channels.
Q:How will you arrange shipment?
A: We can arrange shipment based on your request. We have cooperated forwader who can arrange shipment via FedEx, DHL,TNT with good price.
Q:What is the warranty of goods?
A: One-year Warranty.
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