13
EXCEL TECHNOLOGY GROUP
ABN
88 010 990 208
CE Conformity Declaration
In-pavement Vehicle Detector Loop Tester
Report No: ETG-010807CE
Date Issued 1
st
August 2007
Equipment Type:
LTM1000 In-pavement Loop Tester
Serial Number ET-0703-0000
Equipment Description
The in-pavement loop is a primary source of vehicle detection on the
public road network. The device under test (DUT) excites an in-
pavement loop coil (typically 100micorhenries) to a resonant state
(typically 50-140khz). Upon detecting resonance the device reverse
calculates the coil inductance based on frequency, resistance and preset
capacitance. The LT1000 generates a <500V DC pulse for typically
100 milliseconds to determine insulation quality. The LT1000
incorporates a highly sensitive receiver circuit which detects in-
pavement loop frequencies in the range of 40Khz to 140Khz
1)
The loop tester (referred to as LT1000) has been constructed such that generated
electromagnetic disturbances shall not interfere with other equipment. A report of
compliance in relation to IEC1000-4-5/ EN61000-4-5 has been formally recorded.
2)
The Loop tester (referred to as LT1000) has been constructed to conform to a level of
external electromagnetic disturbance immunity relative to equipment defined within
ASNZS 4251.1 and CE compliance as stated electrical Power surge 1kV - rise time
1.2sec/hold 50m secs for industrial, scientific and medical equipment .
Power Supply
9VDC Battery Source – located internally
Microcontroller
PIC16F876-04 / 11.0592 Mhz Oscillator
Road Loops
Typically 4 Turns of wire 2 Metres x 2 Metres Square roadbased
Surge Protection (Lightning Discharge) each roadbased loop
1500 V 1/2 W 100kohms 90V
Communication
No Provision - not used
Signature
________________________________
Date
1_ / 08_ / 2007
Excel Technology Group Pty Ltd
ABN # 88 010 990 208
18 Staple Street
Seventeen Mile Rocks QLD 4073
Australia
