Siemens BH17 7ER - INTRODUCTION; Purpose; Scope; Related Documents

LOOP DETECTOR HANDBOOK
667/HE/20663/000 Issue 13 Page 3
TABLE OF CONTENTS
SAFETY WARNING ........................................................................................................ 2
1. INTRODUCTION ...................................................................................................... 5
1.1 Purpose ............................................................................................................ 5
1.2 Scope ................................................................................................................ 5
1.3 Related Documents .......................................................................................... 5
1.3.1 Other STC Traffic Installation Handbooks .................................................. 5
1.3.2 Peek/Sarasota Detector Handbooks .......................................................... 5
1.3.3 Maintenance Provision for Peek/Sarasota Detectors ................................. 5
1.3.4 Siemens Self-Tune Detectors .................................................................... 5
1.4 Issue State ........................................................................................................ 6
1.5 Glossary ............................................................................................................ 6
2. INSTALLATION OF TRAFFIC LOOPS AND FEEDER CABLES IN SLOTS ............ 7
2.1 Loop Cable and Slot Dimensions ...................................................................... 7
2.2 Positioning of Loops and Loop Tails/Feeders ................................................... 7
2.2.1 Metal Reinforcing ....................................................................................... 7
2.2.2 Buried Metal Objects.................................................................................. 7
2.2.3 Buried Cables ............................................................................................ 8
2.2.4 Surface Objects ......................................................................................... 8
2.2.5 Blast Furnace Slag .................................................................................... 8
2.2.6 Loop Tails .................................................................................................. 8
2.2.7 Feeders ...................................................................................................... 9
2.3 Loop Configurations .......................................................................................... 9
2.3.1 Replacement Controllers ........................................................................... 9
2.3.2 Replacement VA Loops ............................................................................. 9
2.3.3 Replacement SDE/SA Loops ..................................................................... 9
2.3.4 Use of Soundmark Test Sets ..................................................................... 9
2.3.5 Procedure for Marking Position of Diamond Loops Prior to Slot Cutting .. 10
2.3.6 Chevron type loops – marking of loops .................................................... 10
2.3.7 UD Loops – SDE/SA, SCOOT, Count and Queue ................................... 11
2.3.8 Turning Loops and SDE/SA Loops .......................................................... 12
2.3.9 MOVA Loops ........................................................................................... 12
2.3.10 Special Loops .......................................................................................... 13
2.4 Loop Slot Details ............................................................................................. 13
2.5 Loop Turns and Feeder Lengths ..................................................................... 13
2.5.1 Siemens ST4R / SLD4 Detectors ............................................................ 14
2.5.2 Peek/Sarasota and Microsense MXED Detectors ................................... 14
2.5.3 Plessey ST and Microsense MSE Detectors ........................................... 14
2.6 Cable Laying and Slot Backfilling Procedures ................................................. 15
2.6.1 Loop Cable Laying ................................................................................... 15
2.6.2 Slots Containing Loop Cable ................................................................... 15
2.6.3 Suppliers for Resins and Compounds ..................................................... 15
2.7 Feeder Cables ................................................................................................ 16
2.8 Feeder Cable Slot Details and Backfilling ....................................................... 17
2.9 Joint Loop Tails to Feeder Cables .................................................................. 18
2.10 Cable Entry Through and Under the Kerb ....................................................... 18
2.11 Loop Detector Settings ................................................................................... 19
2.11.1 Sensitivity ................................................................................................. 19
2.11.2 Presence Time ......................................................................................... 19