The DOT600 Roadbed Water-Content Meter is used in construction applications to measure volumetric and gravimetric water content of samples of earthen material in roadbeds and foundations. Portability, along with quick and accurate measurements, make the DOT600 a valuable tool for evaluating roadbed material both at the construction site and in the soil-test lab.
To make a measurement with the DOT600, the operator fills the sample chamber with soil and weighs it on the built-in scale to get a wet sample weight. The operator then compresses the soil in the chamber and triggers a measurement. The measurement result includes gravimetric and volumetric water contents, wet and dry bulk densities, sample volume, and applied force. Approximate time for one measurement is 90 seconds.

Features

Allows operators to monitor:
Roadbed volumetric and gravimetric water content
Sample bulk density and compaction force
Sample volume and weight
Measures volumetric water content (VWC) with a resolution of better than 1.0% VWC and a precision of better than 0.5% VWC
Provides a typical accuracy of ±2% VWC
Makes one measurement in approximately 90 seconds
Generates a measurement report that can be easily imported into spreadsheets
Completely portable system

Specifications

CR850: refer to CR850 product brochure
Battery
Type: 2.9 Ahr rechargeable sealed lead-acid
Standby Charge Retention at 20°C for One Year: 95%
Lifetime: ~500 cycles with discharge to 50% followed by recharge
Scale
Capacity: 1000 g (35.3 oz)
Accuracy: ±0.05 g (±0.002 oz)
Repeatability: 0.02% FS
Water Content Measurement
Resolution: 1% volumetric water content (resolution is the minimum change in the measured parameter, water content, that the sensor can repeatedly detect)
Precision: 0.75% volumetric water content (precision is the expected range for repeated measurements on the same sample.)
Accuracy: refer to DOT600 product brochure
Sample Volume and Applied Force Measurement
Sample Volume: ±1.5% for compressed sampled with thickness between 0.400 in. to 1.000 in.
Sensitive Volume: electromagnetic field penetrates the sample 0.39 inches. Sensitive volume is about 3.5 in3.
Applied Pressure Range: 0 to 45 psi
Applied Pressure Measurement Accuracy: 1.7 psi

Producing Area:USA