10
Detector Test Equipment General Specification
General Performance Specification
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Vehicle detector function self tuning in the range of 50 to 800 microHenries
•
Typical Loop frequency range between 40kHz and 150kHz.
•
Typical Loop inductance range 40 to 800 Microhenries
•
Optimised measurement accuracy ‘mid inductance range’ between 100 and 400 microhenries
•
Measurement accuracy typically 3% >120microhenries
General Operational Specification
Manual ON - momentary switch actuation ON (Circuit operation sustained by internal microcontroller)
Manual OFF – momentary switch actuation OFF.
Shutdown timer approximately 15 seconds – after removal from loop connection
Loop location from moving vehicle ‘sweep’ – maximum speed 110khr
Loop winding location from walking ‘sweep’ +/- 1 CM
Loop insulation integrity >100Megohms
General Electrical Specification
Serial Ports (Where applicable)
Ethernet, RS232C and RS422 IEEE electrical signal level compatible. Configuration port baud 300baud -115kbit.
Digital I/O (Where applicable)
OUTPUT Devices: PVAZ172 MOSFET Photovoltaic Relay 60volt 500 milliamp S/capability
INPUT Devices:
PC844 Opto-isolator 5000V rms Isolation, Input 20milliamps @ 1.2volts
LOOP Interface: Transorb and Line isolation transformers 1:1 Typical 100 millihenries
Connector Specification (Where applicable)
DB Series Current rating 1 Amp, Contact Resistance 20Mohmsmax@DC100mA.
DIN41612 Current rating 2Amp, Contact Resistance 30Mohmmax @ DC100mA.
Mate-enlock Current rating 3amp per pin, Contact Resistance 30Mohmmax @DC100mA
PCB Modular Terminal ‘Phoenix style’ 10Amp Rated Voltage 300VAC
IDC Style Connectors Withstanding Voltage 500v RMS for 1 minute, .5amp Current rating
TEST LEADS – 4mm’bannana’ style plug-socket, Cable Length 700mms Withstanding 500V < 1 minute
Environmental, Power Supply and Physical Specification
Circuitry implemented on all cards is rated from –25
0
C to 65
0
C operation with a relative non-condensing humidity
of 90%. Circuit cards are conformal coated and will operate within ISO and Australian Standard Guidelines for
Traffic Control Devices. PCB CONFORMAL coating Electrolube SCC3 CC dielectric strength of 90KV/mm and
an operational temperature range of –70
0
C to +200
0
C and is self extinguishing when exposed to a flame.
Specification LT100 Enclosure 185mm x 100mm x H30 mms, Weight 0.45kgs, 9Volt DC battery
Specification LTM1000 Enclosure 260mm x 120mm x 60mms, Weight 0.75kgs 9Volt DC battery
* Some degree of variation in current consumption will occur due to operational states and usage – anticipated 2
hours continuous usage with regular Alkaline Battery.
LTM-100 Tester – Portable device requiring a 9VDC battery
Legislative and Regulatory Compliance
RoHS - EU Directive 2002/95/EC per Category 9 / Annex IA – Exempt until 2010
Electrical Power surge 1kV - rise time 1.2sec/hold 50 secs
CE / C
√
tick compliant IEC1000-4-5/ EN61000-4-5
MTBF for loop detectors
Statistical MTBF individual component extrapolation (MIL-STD-217-E)
* Using chi-squared test, we can state with 90% confidence: > 100,000hrs
Field History – based on reasonable care
