RESISTOGRAPH
Rinntech's RESISTOGRAPH® is the world leading technology for tree and timber inspections. The RESISTOGRAPH® is engineered to the highest German standards and can drill through any hardwood timber. The RESISTOGRAPH® is the essential tool for any serious arborist to detect the inner condition of trees or wooden structures.
The RESISTOGRAPH® has been completely redesigned based on our experience with thousands of applications. It has now become even more powerful, and its computer-controlled feed control enables arborists to fully concentrate on the item to be examined. The speed and feed-rate control no longer have to be preset. The measurement profiles are synchronously printed and additionally stored in the unit’s internal memory. You may transmit the data to your PC later and evaluate it with the DECOM™ software.
There are two models available for Australian and New Zealand arborists:
Professional Model – includes DECOM™ software with all the features necessary for professional reports;
Scientific Model – includes additional modules in the DECOM™ software for statistical and mathematical modelling. The scientific model is ideal for archaeological and dendrochronological research.
Click here for a link to a special page on the RESISTOGRAPH® and the science behind the instrument.
Applications
- For street, park and forest trees
- Detection of decay, cavities and cracks
- Determination of the wood quality
- For construction timber, poles and playground equipment
- Wood inspection
- Determination of wood quality
- Detection of cracks, cavities and decay
Assessment of traffic safety
Protecting people from trees, or protecting trees from people? This is the question tree experts and the relevant authorities are often confronted with. The decisions to make are often difficult. The most frequent urban stress factor suffered by trees is damage resulting from road works, car accidents, soil compaction, vibration, air pollution, de-icing salt, etc. They result in damage to trees, such as frequent rotting or instability, which threaten not only their own survival but may also become dangerous for people.
The RINNTECH concept
Any tree examination initially requires a detailed visual inspection of the tree including its root, trunk/stem, crown and location. If the visual inspection and diagnosis of the tree is not sufficient to judge the traffic safety of trees or to provide objective evidence of findings, we use the following technical methods, depending on the requirements of the individual case:
- Tree tomography using the ARBOTOM®
- Root diagnosis using the ARBORADIX™
- Drill resistance measurement using the RESISTOGRAPH®
- DYNATIM™ load analyses
Using these methods, we can determine the inner status of trees and draw conclusions as to their breakage safety and their stability.
RESISTOGRAPH® Professional 650 with 50 cm drilling depth
Specific design for inspections of Australian hardwoods such as eucalypts, angophoras, corymbias, and tropical trees. Also suitable for all New Zealand trees and common northern hemisphere urban trees such as oaks, elms and poplars.
Package includes:
- Resolution 1/100 mm
- Speed of up to 30 cm/min
- PowerPack 12V power supply (312 Wh)
- Integrated thermo printer
- Control electronics
- Memory for up to 500 measurements
- PC interface
- USB adapter cable for data transmission to PC
- DECOM™ Professional software for data transmission and processing
- Shoulder bag for PowerPack and system case for complete system
RESISTOGRAPH® Scientific 650 with 50 cm drilling depth
Specific design for scientific diagnosis of tropical trees and timber.
Package includes:
- Resolution 1/100 mm
- Speed of up to 30 cm/min
- PowerPack 12V power supply (312 Wh)
- Integrated thermo printer
- Control electronics
- Memory for up to 500 measurements
- PC interface
- USB adapter cable for data transmission to PC
- DECOM™ Scientific software for data transmission and processing (including tree ring analysis)
- Shoulder bag for PowerPack and system case for complete system
Frank Rinn (2016). lntact-decay transitions in profiles of density calibratable resistance drilling devices using long thin needles. Arboricultural Journal. DOI: 10.1080/03071375.2016.1228336
Tree root plate assessment by sounding (Western Arborist, Fall 2016)
How Stem Cross-Sectional Shape and Size Determine Load-Carrying Capacity of Trees (Western Arborist, Spring 2016)
When is Bottleneck Dangerous? (Western Arborist, Summer 2015)
Understanding Size-Related Principles of Tree Growth for Better Tree-Risk Evaluation (Western Arborist, Winter 2015)
Error Calculation in Tree Inspection – You’ve Got to be Kidding! (Western Arborist, Summer 2014)
How Much Crown Pruning is Needed for a Specific Wind-Load Reductions? (Western Arborist, Spring 2014)
Shell-Wall Thickness Breaking Safety of Mature Trees (Western Arborist, Fall 2013)
Basic Aspects of Mechanical Stability of Tree Cross Sections (Western Arborist, Winter 2011)