Hilti Ferroscan PS 250 Operating Instructions Manual page 45

∅ Bar diameter
↧ [mm] Depth in mm
0 Bar is visible at this depth but no depth is calculated.
X Bar cannot be detected at this depth.
The value indicates the typical accuracy of the depth measurement (deviation
en
from actual) in mm.
4.3.1 Imagescan and Blockscan: Rebar diameter is known
Please refer to the bar diameter tables in the annex (1.).
4.3.2 Imagescan and Blockscan: Rebar diameter is not known
Please refer to the bar diameter tables in the annex (2.).
4.3.3 Quickscan recording: Rebar diameter is known
Please refer to the bar diameter tables in the annex (3.).
4.3.4 Quickscan detection with depth measurement: Rebar diameter is known
Please refer to the bar diameter tables in the annex (4.).
4.3.5 Quickscan detection
Depth measurement is accurate to within ±10% of the effective depth.
4.3.6 Accuracy of bar diameter measurement
± 1 standard diameter when rebar spacing : depth of cover ≥ 2 : 1. Bar diameter measurement is possible only at
depths of up to 60 mm.
4.3.7 Reinforcing bar location accuracy
Bar center locating accuracy (all modes): Typically ± 3 mm relative to the measured position, when the ratio of bar
spacing : depth of cover is ≥ 1.5:1.
4.4 Technical data for PS 200 S scanner
Maximum scanning speed
Memory type
Memory capacity
Screen type / size
Screen resolution
Dimensions
Weight (with PSA 80 battery pack)
Minimum battery life (with PSA 80 battery pack)
Automatic power-off
Backup battery type / life
Scanner-monitor data interface
Scanner-monitor data transfer time
Infrared range
Infrared output power
42
0.5 m/sec
Built-in flash memory for data
9 Imagescans plus up to 30 m of recorded Quickscan
(max. 10 scans)
LCD / 50 × 37 mm
128 × 64 pixels
260 × 132 × 132 mm
1.4 kg
8 hours under typical conditions
5 min. after last press of a button
Lithium / 10 years (typically)
Infrared
≦16 s for 9 images, ≦2 s for 1 image
0.3 m (typically)
Max. 500 mW