FM-204DJ Digital Soil Penetrometer – Portable Soil Compaction & Hardness Tester

This FM-204DJ Soil Penetrometer is a practical handheld instrument designed for evaluating soil firmness, compaction uniformity, and penetration resistance in various outdoor environments. It is suitable for comparing different soil layers and understanding soil hardness characteristics in fields, landscaping, agricultural land preparation, and educational soil science experiments. The device includes multiple probe rods to adapt to different soil textures such as clay, sand, mixed soil, and backfill materials. Its digital display supports real-time readings as well as peak-value hold, helping users capture maximum penetration force during each test. With a wide measurement range from 0 to 1000N, the penetrometer provides clear and consistent data for observing soil density differences at various depths. Designed for portability, the instrument uses two AA batteries, features low power consumption, and includes an automatic shutdown function. The detachable probe rods allow quick cleaning and storage after field use. Whether for soil research, outdoor testing, or training demonstrations, this penetrometer offers a reliable and efficient way to study soil behavior without complex equipment.Specifications: Measuring range: 0kg-100kg (0N-1000N) Test depth: 0cm-30cm Material tested: all kinds of backfill soil, clay, sand and mixed soil after rolling Application environment: highway, railway, reservoir, dike, dam and civil building, etc Test results: filling resistance, relative density, compaction coefficient and foundation bearing capacity Power: 2 AA batteries Not Included (6 V dc matching) Weight (excluding battery): instrument 415 g, handle 295 g, probe rod 380 g. Accuracy of the test: ≤0.25% Shutdown mode: Close automatically or manually shut down 10 minutes.

• Multi-Probe Soil Testing Design. Includes three interchangeable probes (φ7mm, φ10×120mm, φ10×320mm) for testing various soil types, helping users measure soil hardness and compaction consistency more accurately.
• Digital Peak-Hold Measurement. Features a clear digital display with peak-value hold, allowing users to capture maximum force readings in real time during soil penetration tests.
• Wide Measurement Range (0–1000N). Covers a broad range suitable for comparing soil firmness across different layers. Stable measurement system helps obtain repeatable results in field environments.
• Lightweight & Easy to Operate. Compact structure (total weight under 1.2 kg without batteries) and ergonomic handle design allow smooth penetration and controlled operation even in outdoor environments.
• Low-Power Consumption & Auto-Shutdown. Powered by 2 AA batteries and equipped with an automatic 10-minute shutdown function to extend service life during field use.