159 001 826 - High-Pressure Sealing Corrosion-Resistant Flange - Stainless Steel

Product Specification

1. ​Product Overview​

The +GF+ Signet 159 001 826 is a high-performance ultrasonic level transmitter engineered for continuous non-contact liquid level measurement in demanding industrial environments. Featuring a ​PVDF sensor housing​ with ​IP68/IP69K protection, this device withstands corrosive chemicals, high-pressure washdowns (up to 100 bar), and extreme temperatures from ​​-40°C to +80°C. Its advanced ​75kHz ceramic transducer​ delivers precise measurements up to ​10 meters​ with ±1% accuracy, even in challenging conditions with foam, vapor, or agitator interference. The sensor incorporates ​IntelliTrack™ echo processing​ to filter false signals and automatic temperature compensation. Designed for SIL 2 applications per IEC 61508, it offers dual-output options (4-20mA HART/RS-485 Modbus) and comes with a 1.5" NPT process connection for versatile tank mounting. Ideal for water treatment, chemical processing, and food manufacturing.

2. ​Key Technical Parameters​

• ​Measurement Range: 0.25–10 m (liquid), 0.15–5 m (solids)
• ​Accuracy: ±1% of reading or ±3mm (whichever is greater)
• ​Beam Angle: 8° narrow beam (-3dB point)
• ​Output Signals: 4-20mA HART + RS-485 Modbus RTU
• ​Process Connection: 1.5" NPT male (316L SS)
• ​Pressure Rating: 3 bar @ 20°C (4 bar peak)
• ​Temperature Compensation: Integrated PT1000 sensor
• ​Electrical Protection: Reverse polarity, 4kV surge, short-circuit
• ​Certifications: ATEX/IECEx Zone 0 (Gas), Zone 20 (Dust), SIL 2
• ​Housing Material: PVDF (Kynar®) with Viton® seals

3. ​Primary Applications​

This sensor excels in critical industrial scenarios:

• ​Wastewater Treatment: Sludge level monitoring in clarifiers with heavy foam
• ​Chemical Processing: Concentrated acid tank measurement (up to 98% H₂SO₄)
• ​Food & Beverage: CIP-compliant level control in dairy processing tanks
• ​Pharmaceutical: USP Class VI-certified bioreactor level monitoring
• ​Power Generation: Cooling tower basin level management
• ​Pulp & Paper: Stock tank control with steam compensation
• ​Mining: Leachate level tracking in tailings ponds (pH 1-14 resistance)
• ​HVAC Systems: Glycol solution monitoring in district cooling plants
  Its PVDF construction resists chlorine, hydrocarbons, and caustic solutions while maintaining accuracy in temperatures from freezing brine solutions to hot process liquors.

4. ​Functional Advantages​

• ​Reliable Performance:
  • SonicClean™ automatic surface cleaning prevents coating buildup
  • Advanced DSP ignores false echoes from agitators/vapor
• ​Installation Flexibility:
  • ±0.1%/°C temp compensation for steam environments
  • 20° beam acceptance angle for off-center mounting
• ​Diagnostic Intelligence:
  • HART diagnostics: Echo profile, signal strength, device health
  • Modbus registers: 32+ parameters including distance-to-fault
• ​Safety Compliance:
  • SIL 2 hardware fault tolerance (HFT=1)
  • ATEX Ex ia IIC T6 Ga / Ex ia IIIC T85°C Da
• ​Lifecycle Benefits:
  • 5-year transducer lifespan (50M pulse cycles)
  • Predictive maintenance alerts via Modbus
• ​Global Certifications:
  • FM/FMc, UL, CSA, CE, UKCA, RCM
  • WRAS, KIWA, DVGW water approvals

5. ​Measurement Technology & Safety​

​Operating Principle:

1. ​Pulse Emission: 75kHz ultrasonic bursts (8 pulses/sec)
2. ​Echo Detection: Time-of-flight calculation: Distance = (Speed of Sound × Time)/2
3. ​Dynamic Compensation:
   • Real-time sound velocity adjustment via temp/PID
   • Beam focusing minimizes tank wall effects
4. ​Signal Validation:
   • Multi-echo tracking ignores fixed obstructions
   • SNR >20:1 for reliable detection in foam

​Safety Architecture:

• ​Redundant Processing: Dual-channel DSP with cross-verification
• ​Continuous Diagnostics:
  • Transducer impedance monitoring
  • Output circuit validation (4-20mA loop test)
  • Memory checksum verification
• ​Fault Response:
  • Safe-state output (3.8mA or 22mA) on critical failure
  • HART Alert 48: Hardware fault notification

​SIL 2 Implementation:

• Hardware Fault Tolerance: 1 (HFT=1)
• Safe Failure Fraction: >99%
• Proof Test Interval: 8 years
• PFDavg: 3.2×10⁻³ (per IEC 61508 calculations)

Packaging & Shipping

Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.

With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are

perfectly.

we are major in PLC,Sensors,HIM,Transmitters.

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