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DMM600

Campbell

The DMM600 measures volumetric water content of organic forest floor material. It is a portable, battery-powered device that uses measurement methods sensitive to the dielectric properties of the material being measured.

The DMM600 consists of a cylinder that houses the electronics, a sample chamber with a compression knob, and an LCD readout. To measure duff water content, the sample is placed in the sample chamber and the compression knob is turned until an audible indicator signals the sample is properly compressed and the measurement is complete. Total time for measurement is about 30 seconds. Readings are displayed in real-time only; measurements are not stored.

The DMM600 comes with a sieve and case. The sieve fits in the opening of the sample chamber. Duff is moved through the wire mesh of the sieve to break up large fragments and improve measurement accuracy in duff materials with a large range of fragment sizes. The case eases transport and provides storage for the sieve and small items such as a spare battery, screwdriver, and pencil.

Features

Measures duff water content in the field
Uses technology similiar to our water content reflectometers
Place duff in chamber, turn hand crank, and the reading is automatically taken
Volumetric water content measurements are derived from standard calibration and one user-defined calibration
Includes carrying case
Supplied with PCDMM Software

Specifications

Battery: 9 V alkaline
Typical Current Drain: ~3 mA between measurements (goes into a low-power sleep mode after five minutes of inactivity); 140 μA sleep mode; 85 mA for ~1 ms during measurement
Measurements per battery: >2000
Accuracy: ±5% full scale range
Resolution: 1% volumetric water content

Producing Area:USA

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