TREE AND TIMBER MEASUREMENT

Inventory

Forest field inventory measurement provides valuable information for felling decisions, forest evaluation and harvest planning. Teams of only one or two members may employ computerized calipers and hypsometers to collect diameters and related variables.

Different sampling intensities are supported, including complete enumeration. Data is then transferred from the caliper to a PC where height curves, stem frequency and assortment distributions are created for each species. Results can be seen on the caliper’s screen or printed directly from a portable printer in the forest.

Log measurement

Log field measurement is designed for smooth and easy measurement of stacked logs in ports, sawmills or at the forest roadside. The system may be used to measure up to 1000 logs per hour. From each log, diameter, length and quality are registered.

Measurement results are immediately available from the caliper screen or can be printed out on paper on-the-spot or transferred to a PC. As log measurement rules vary from country to country, several versions of the software are available.

Harvester head measurement control

Harvester head measurement control gives reliable information about how diameter and length results differ between harvester and caliper.

Measurement results for a sample of logs are first downloaded to the caliper from the harvester. The control software then guides the re-measurement of the sample using the caliper equipped with a measuring tape.

The caliper’s display informs the user how to measure and enter data into the caliper. Volumes of sample logs are calculated using the same procedure as used by the harvester. A measurement control report can be printed from the caliper or viewed from its display. Data can also be uploaded back to the harvester which may be used by the operator in deciding whether re-calibration is required.

Log scanner measurement control

Diameter of reference logs are measured at one meter intervals. Volumes of sample logs are calculated using the same procedure as used by the log scanner. After measurement, caliper data is transferred back to scanner for a control report to help decide whether re-calibration is required.