Installation Manual

Appendix: Induction Loop and Vehicle Detector Board Specifications
April 24 2015 – Revision 1.0
Page 66 of 76
3M™ Drive-Thru Systems G5 Basestation Model G5B1
Installation Manual
Appendix: Induction Loop and Vehicle Detector
Board Specifications
Internal Vehicle Detector Board Specifications
Saw - In Loop Specifications
Prefab Loop Specifications
Parameter Specification or Requirement
Size 2.5 in. x 3.0 in. (5.1 cm x 7.6 cm)
Power Supply Type Supply from G5 Base Station G5B1 terminals
Voltage 12 DC nominal
Current 50 mA maximum
Connector 3 wire plug in connector to G5 Base Station G5B1
Parameter Specification or Requirement
3M Detector Loop Sealant 2 each, 1 quart cartridges.
Loop Wire 14 AWG, 19 strands of bare copper, .015
polyvinyl chloride insulation with .004 nylon
jacket, 600v U.L. listed as 90 degree Celsius
MTW, gasoline and oil resistant, 100 feet long.
Parameter Specification or Requirement
Loop inductance 100 micro henries
Loop tubing 1/2 " schedule 40 PVC
Loop wire 5 turns of 18 AWG, 7 strands copper with poly
vinyl chloride insulation
Lead - in cable 20 feet of 2 conductor (plus shield) 16 AWG. 19 x
29 stranded copper, Mylar shield with 20 AWG
Drain wire. Outer jacket to be of high density
polyethylene, suitable for direct burial.