Rainhart Proctor Soil Compactor - Digital Counter

The Programmable Digital Counter (662-1650) is an accessory designed for the Rainhart Automatic Proctor Soil Compactor. This tabletop-mounted unit provides a convenient digital counting solution for laboratories performing soil compaction testing.

Supplied with an optical sensor, reflective tape, and mounting hardware, the digital counter provides the components needed to integrate the counting system with compatible Rainhart soil compactors. Its programmable design offers a practical solution for laboratories looking to maintain or upgrade their existing soil compaction equipment.

Ideal for geotechnical laboratories, construction materials testing facilities, and state DOT laboratories, this accessory supports efficient equipment operation during routine soil moisture-density testing.

Key Features

• Designed for use with the Rainhart Automatic Proctor Soil Compactor, which supports soil moisture-density testing in accordance with ASTM D698, ASTM D1557, AASHTO T 99, and AASHTO T 180.
• Features a programmable digital counter that provides a convenient electronic counting solution for compatible soil compaction equipment.
• Includes an optical sensor and reflective tape for detecting mechanical movement during compactor operation.
• Features a tabletop-mounted configuration that allows convenient placement near the compactor for operator access.
• Provides a practical replacement or upgrade option for laboratories maintaining existing Rainhart automatic soil compactors.
• Helps laboratories maintain dependable equipment operation and supports efficient testing workflows.

Included Items

The Programmable Digital Counter includes one tabletop-mounted digital counter, one optical sensor, reflective tape, and the mounting hardware supplied by the manufacturer. These components are provided together under Part Number 662-1650 for use with compatible Rainhart soil compactors.

Lab Manager's Tip

When installing the digital counter, ensure the optical sensor is properly aligned with the reflective tape to provide consistent detection during compactor operation. Inspect the sensor mounting and reflective tape periodically for looseness, dirt, damage, or misalignment that could interfere with accurate counting.

After installation, verify that the counter registers the correct number of compaction cycles by comparing its readings with manually observed hammer drops. Confirm that the counter settings correspond to the laboratory's testing procedure before returning the equipment to routine service.

• Rainhart_Soil_Compactor_662EP_Parts_Diagram.pdf