Model SI-7000 LTD Tank Gauging System

After 50 years of delivering the world's most trusted LNG tank-top LTD systems – the completely re-imagined, redesigned, and most advanced solution for LNG tank profiling: The Scientific Instruments Model SI-7000 LTD. The SI-7000 Probe has dedicated sensors for level, temperature and density of LNG measurements, all embedded into a robust stainless steel housing.

Scientific Instruments Model SI-7000 LTD Tank Gauging System

The SI-7000 LTD is the most dependable solution for level, temperature, and density profiling in LNG & LPG Storage Tanks. The SI-7000, a third generation LTD from Scientific Instruments was designed to meet today’s demanding safety regulations. Now on smaller footprint, built-in intuitive keypad display, optimized performance, reliability and accuracy. The SI-7000 Probe has dedicated sensors for level, temperature and lng density measurements, all embedded into a robust stainless steel housing. All components exposed to Zone 0 & 1 are constructed of stainless steel, offering superior corrosion resistance. The SI-7000 now features an entirely re-designed jam-proof vertical-gear-drive mechanism (VGD), combined with a robust stainless steel chain resulting in trouble-free most reliable profiling performance in LNG & LPG storage tanks.

Some of the key features of the Model SI-7000 LTD Tank Gauging System include:

  • Level, temperature, and density of LNG sensing in a single probe
  • All-stainless construction for superior corrosion resistance in extreme environmental conditions
  • Robust chain drive
  • Stilling well not required
  • Symmetrically balanced for flange mounting and support
  • Accurate liquid level measurement with discrete dual sensor level detection array and smart feedback
  • Advanced, self-calibrating electronics with embedded high resolution, full color, touch-screen HMI
  • Safe and simple access to internal components for ease of maintenance
Model SI-7000 LTD Tank Gauging System Preliminary Specifications
Measurement DATA
LEVEL
Range 0-56 m
Resolution <1 mm
Accuracy ±2 mm
TEMPERATURE
Range -200°C to +50°C
Resolution 0.01°C
Accuracy ±0.1°C
DENSITY
Range 400 to 1000 kg/m3
Resolution 0.01 kg/m3
Accuracy ±0.5 kg/m3
PHYSICAL & ELECTRICAL CHARACTERISTICS
Power Supply 85-264 VAC (±10%)
47-63 Hz, 150 Watts
Max. Op. Pressure 400 mbar g
Protection class Designed to meet IP65
Mounting Flange 6” ANSI 150#RF
Drive Cable Chain drive: SS304
Housing Material 316 Stainless Steel
Safety Certifications* IECEx & ATEX
Seismic Compliant Designed to comply to 3.0g
Stilling Well With or Without (Consult Factory)
Isolation Valves External isolation (pinch) valve
Communications  (2) Standard RS-485 – Modbus Optional; 20mA, HART, Ethernet
Sensor Connections Gold-plated Slip Rings
Dimensions 125 x 76 x 37 cm
Weight 180 kg
Sensor Isolation I.S. Barriers
Profile Points 250+

For product assistance, please contact Scientific Instruments.

SI-7000 LTD Specifications

sii_pdfIcon Scientific Instruments SI-7000 LTD Full Spec Sheet

The NEW SI-7000 LTD is the most dependable solution for level, temperature, and density profiling in LNG & LPG Storage Tanks. The NEW SI-7000, a third generation LTD from Scientific Instruments was designed to meet todays demanding safety regulations. Now on smaller footprint, built-in intuitive keypad/ display, optimized performance, reliability and accuracy. The SI-7000 Probe has dedicated sensors for level, temperature and density measurements, all embedded into a robust stainless steel housing.

All components exposed to Zone 0 & 1 are constructed of stainless steel, offering superior corrosion resistance. The SI-7000 now features an entirely re-designed jam-proof vertical-gear-drive mechanism (VGD), combined with a robust stainless steel chain resulting in trouble-free most reliable profiling performance in LNG & LPG storage tanks.

For more information, please send us an email or call us at 1-800-466-6031. A Scientific Instruments associate will be happy to assist you.

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