Laser > Criterion™ RD 1000

The CriterionTM RD 1000 is the first-of-its-kind measurement unit engineered exclusively for the forest industry. This small, lightweight instrument can be used as a stand-alone instrument or attached to an Impulse or TruPulse 200 laser and data recorder as a fully automatic data acquisition system.

Timber cruisers have long desired an instrument which is slope-corrected, easy-to-use under various light conditions and provides a direct read-out of heights and diameters. In addition, it needs to be accurate, lightweight, multifunctional, dependable and inexpensive.

The RD 1000 meets all these requirements. One of the instrument’s unique features is a row of LEDs in the sighting scope which can be viewed as a “solid bar” or as a “gap bar,” as defined by illuminated red segments on each end. The illuminated segments and display readings offer variable brightness levels which give you accurate readings under all lighting conditions. Another feature is the direct read-out of slope, heights and diameters displayed right in the eyepiece, which will update continuously as you adjust the controls.

Diameter accuracy of +/- 0.25 inch can be maintained out to 80 feet away from the tree by utilizing the included, detachable magnifying lens. The RD 1000 can be used as a slope-corrected Basal Area scope for variable plot cruising (BAFs 1-127) and is quickly able to determine if questionable “borderline” trees are in or out of the plot. Used as a dendrometer, the RD 1000 will measure diameters anywhere on the stem and also the height at which a specific diameter occurs. And if that wasn’t enough, we designed it to be affordable too.


Specifications:

• Dimensions: 2.75" x 2" x 6.5" (7 cm x 5 cm x 16.5 cm)
• Weight: 1.1 lbs. (500 g)
• Data communication: Serial, via wired RS232 Input/Output, NMEA 0183
• Power: 3.0 volts DC nominal; (2) AA batteries or (1) CRV3 battery
• Battery duration: AA – approx. 20 hours;
• CRV3 – approx. 40 hours Environmental: Impact, water and dust resistant;
• NEMA 3, IP 54
• Temperature: -22°F to +140°F (-30°C to +60ºC)
• Optics: Normal, 1X;
• Magnified, 2.5X nominal
• Displays: External LCD and Internal LED
• Units: Imperial and Metric
• Mount: Monopod/tripod (¼” 20 thread)
  

Measurement Range:

• Diameter: 2” to 100” (5 cm to 254 cm)*
• Basal Area Factor: 1 to 127 ft2/acre (0.2 to 29.1 m2/hectare)
• Inclination: +/- 90 degrees
  

Accuracy:

• Diameter: +/- ¼” at 80 ft (6 mm at 24 m)*
• Inclination: +/- 0.1º typical

Measurement Modes / Features:

• BAF: Visually estimates if trees fall in or out of a given plot as related to the specified Basal Area Factor.
• In/Out: Internally computes the limiting distance for questionable, borderline trees and determines if they are in or out of the plot.
• Diameter: Determines the diameter of a tree at any given height.
• Height/Diameter: Provides the ability to determine the height at which a specific diameter occurs.
• Raw Inclination: Measures inclination in percent slope.
  

What The Make The RD 1000 Better- Which scope would you rather look through when you are standing underneath dense canopy and don't have the luxury of good lighting?

• The RD 1000 can be used as a Basal Area scope for variable plot cruising (with selectable BAF). Now you can quickly determine if questionable “borderline” trees are In or Out of the plot.
  
• Used as a dendrometer, the RD 1000 will measure diameters anywhere on the stem and also the height at which a specific diameter occurs.

from : http://www.lasertech.com