HSWIM Calibration Instruction TEL Equipment_Mikros

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Table of content 1 Introduction............................................................................................................................. 3 2 Equipment Needed................................................................................................................. 3 3 Methodology ........................................................................................................................... 5 4 Interpretation of the calibration results reports ....................................................................... 5 5 Format of the reports .............................................................................................................. 7 6 Statistical formulas used......................................................................................................... 7 7 Procedure to get to calibration reports in TELCOM ............................................................... 8 Calibration Report Sample ...................................................................................................... 14 2 MS001-00006-56 HSWIM_Calibration_Instruction_Issue_3 17-10-00
1 Introduction Mikros Systems recommends the following method for calibration and verification of HSWIM installations. To eliminate as many variables as possible the installation must confirm to document MS001-00005-41 (Wim Site Requirements). As a calibration and verification vehicle a two-axle truck with high quality suspension (air suspension preferred) must be used. The detail data capture and analysis procedures are part of the TELSYS suite of programs, the operation of the calibration data capture procedures are described in document MS001- 95000-86 (Tel Software Suite Telsys Manual) Alternatively more than one calibration truck can be used. The same procedure must be followed as with one truck. It is of the utmost importance that if multi (more that two) axle trucks are used all of the axle be weighed on the reference scale in one action. Enough scales must be available to do all the axles (wheels) at once. This means that for a five axle (tractor semi-trailer) truck ten wheel scales are five axle scales be used. Should a segmented weigh bridge be used it must be kept in mind that axle weights are not available. 2 Equipment Needed 2.1 Calibration truck Two-axle truck (or multi-axle trucks) with good suspension (air suspension preferred) capable of maintain the average running speeds of trucks over the HSWIM site. The truck(s) should have an evenly loaded with a stable load to at least 75% of the legal axle limits. This axle limit must be the legal road load limit. 2.2 Reference scales The truck must be weighed at a legal static weighbridge. In addition static portable scales conforming to at least OIML No. 76 Class 4 or NBS H44 Class 4. 2.3 Traffic control Adequate traffic control must be provided for the turnarounds. Under no circumstances shall turnarounds be permitted without the required authority and prescribed traffic deviations. Should it be more beneficial to close off a whole lane to allow the truck to reverse back to the start of each run adequate length of lane closure must be provided. 2.4 Trained driver A professional driver must be employed to ensure that the truck will be driven smoothly over the site. No sudden braking or gear changes are allowed over the HSWIM site. 2.5 Data collection team A team of two observers at the Data Logger, observer one to check for the truck arriving at the WIM site and observer two to tag the vehicle on the laptop connected 3 MS001-00006-56 HSWIM_Calibration_Instruction_Issue_3 17-10-00
Page 1: MIKROS SYSTEMS TRAFFIC EVENT LOGGIN
Page 5 and 6: 3 Methodology • The calibration t
Page 7 and 8: 5 Format of the reports For the wei
Page 9 and 10: Loading Cal & Run Files: 9 MS001-00
Page 11 and 12: 11 MS001-00006-56 HSWIM_Calibration
Page 13 and 14: Display the results regression plot

HSWIM Calibration Instruction TEL Equipment_Mikros

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