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Model SI-7000

In Stock

Scientific Instruments 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.

Model SI-7000 LTD Tank Gauging System features:

  • 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

SKU: SI-7000 Category:


Additional information

Weight 180 lbs
Dimensions 125 × 76 × 37 in
Level Range

0-56 m

Level Resolution

<1 mm

Level Accuracy

±2 mm

Temperature Range

-200°C to +50°C

Temperature Resolution


Temperature Accuracy


Power Supply

85-264 VAC (±10%)
47-63 Hz, 150 Watts

Maximum 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


Seismic Compliant

Designed to comply to 3.0g

Stilling Well

With or Without (Consult Factory)

Isolation Valves

External isolation (pinch) valve


(2) Standard RS-485 – Modbus Optional; 20mA, HART, Ethernet

Sensor Connections

Gold-plated Slip Rings


125 x 76 x 37 cm


180 kg

Sensor Isolation

I.S. Barriers

Profile Points


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