2520 Automatic Tank Gauge (ATG) – High-Pressure Float & Tape

Overview

2520 Automatic Tank Gauge (ATG)

Continuous, power‑free level measurement for pressurized storage vessels—API 3.1B accuracy with magnetic drive safety and optional digital integration.
The 2520 Automatic Tank Gauge (ATG) by Varec, a Cognesense brand, is a mechanically operated float & tape instrument designed for high‑pressure bulk storage applications. It provides continuous level indication at the tank side via a dial and counter, meeting API Chapter 3.1B requirements for inventory control with accuracy up to 0.2 in (4 mm). A magnetic drive mechanism isolates the indicating components from tank pressure to enhance safety in pressurized service. Flexible installation kits support mounting on the tank roof or at grade for ground‑level reading, and optional transmitters enable electronic data and temperature integration to the control room.
EVO 1610

Highlights

Typical Applications

Technical Specifications

Table Header Table Header
Accuracy
Up to 0.2 in (4 mm) per API Chapter 3.1B
Pressure Ratings
150, 220, or 300 PSI (typical variants)
Operating Temperature
-30 °F to +160 °F (-34 °C to +71 °C) typical
Measuring Range
Standard 0–60 ft (18 m)
Display
Dial/counter, metric or imperial (decimals or fractions)
Installation
Tank roof or at‑grade ground‑reading kits; spherical/bullet kits available
Magnetic Drive
Isolates indicator from process pressure to prevent vapor escape and damage
Digital Integration
Compatible with 2920 Float & Tape Transmitter (level, temperature, protocols: Modbus, GPU/BPM, Mark/Space, L&J Tankway)
Approvals
  • 150 and 220 PSI (15 BAR) gauge versions conform to ATEX Ex II 2G T5 (Zone 1)
  • IP66 – All models (optional)

Integration & Accessories

Downloads

Contact Support

Need safe, reliable level measurement on pressurized storage? Contact Cognesense for 2520 ATG sizing, pressure‑rated kits, ground‑reading options, and digital integration with the 2920 FTT. We’ll deliver a turnkey plan with accessories and installation guidance. Quotes are usually provided within 3–5 business days.

FAQs

We have tried to answer the most common questions we are asked here.

Up to 0.2 in (4 mm) per API Chapter 3.1B when installed and calibrated per guidelines.

Typical variants are 150, 220, or 300 PSI; select based on tank design and site standards.

It isolates the indicating mechanism from process pressure, reducing risks of vapor escape and mechanical damage.

Yes. Add the 2920 Float & Tape Transmitter to publish level/temperature via Modbus, GPU/BPM, Mark/Space, or L&J Tankway.

Yes. Use ground‑reading kits to locate the indicator at grade while keeping the float/tape at the tank roof.

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