Model 4021™ Ultra-Low Profile Drum Scale


  • Designed for frequent on and off loading of carboys and drums
  • Standard base sizes: 18″ and 26″
  • Net capacity: Up to 1,000 lbs. (454 kg)
  • High accuracy of ±0.25% of capacity
  • Single or multi-channel controllers with easy readability to 0.1 lb. (kg)
  • Readout in pounds, kilograms, gallons or liters

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Scaletron 5 Year Warranty on All Scale Products

Ultra-Low Profile Weighing Solution for Applications Requiring Frequent On/Off Loading of Carboys and Drums

The Model 4021 Ultra-Low Profile Drum Scale is designed for weighing carboys and drums up to 26” in diameter and offers a net capacity of up to 1,000 lbs. Featuring corrosion resistant construction and an economical single load cell design, the ultra-low profile base and adjustable backstop allows for safe and easy handling and centering of containers. Indicators are available from 1 to 4 channels with 4-20 mA outputs and optional set point relays. MADE IN USA.

Standard Features

  • Rugged steel construction protected by a corrosion resistant, zinc oxide primed and dry powder epoxy coated finish, with solid 1/4″ PVC decking for use in harsh environments
  • Ultra-low profile platform (1.81″) design increases safety and ease of drum handling
  • Designed for centered loads – includes heavy-duty steel backstop with measuring guides to help position the drum
  • NTEP stainless steel shear beam, temperature compensated load cell
  • Electronic indicator housed in NEMA 4X, UL approved enclosure to provide protection from acids
  • 20 ft. of 4 conductor wire cable

Available Controllers

  • AccuPro 5000 Digital Controller with one or 2 channels, encoder knob or 3 button keypad, audible alarm and 4-20 mA output signal – scale or loop powered
  • AccuPro 6000 Digital Controller with one or 2 channels, touch screen, audible alarm and 4-20 mA output signal – scale powered


  • High and low level set points
  • 0-5V or 0-10V output signal
  • Remote mounting of indicator box up to 200 feet (61 meters) away – includes junction box and additional length of 4 conductor wire cable


  • Scale is designed to accurately measure weight of alum, ammonia, caustic, fluoride, phosphate, polymers, sodium aluminate, sodium bisulfate, sodium hydroxide, sodium hypochlorite and other liquids or powders