EDI DEFLECTOMETER LMD301 Panduan Pengoperasian - Halaman 4
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1.1 DESCRIPTION
The LMD301 Loop Monitor DEFLECTOMETER
vehicle detector. The LMD302 Loop Monitor DEFLECTOMETER
inductive loop vehicle detector. The LMD304 Loop Monitor DEFLECTOMETER
four channel inductive loop vehicle detector. The units meet or exceed all requirements for
detectors as defined in Nema Standard TS1-1989 (R2005). Each channel has individual
controls for setting up sensitivity, operational mode and frequency on the front panel, along
with detection and fault status indicators.
Model
LMD301
LMD301S
LMD301T
LMD302
LMD302S
LMD302T
LMD304
LMD304S
1.2 OVERVIEW
A dynamic Overview of the LMD operation which includes an LMD Simulator is available on
the EDI Web Site; www.EDItraffic.com.
1.3 DEFLECTOMETER FEATURE
The LMD Series Loop Monitor introduces a concept to the inductive loop detector field that
revolutionizes the process of installing and programming a loop detector. The new user
interface of the LMD Series provides the feedback necessary to the signal technician to
quickly and accurately program the parameters of the detector exactly to the loop plus lead-
in system characteristics.
The DEFLECTOMETER
is in the detection zone. This provides feedback that the unit is optimally tuned to
detect vehicles of all sizes.
Setting the sensitivity level of the detector can be easily done in one step with a
"typical" vehicle parked in the detection zone. The DEFLECTOMETER
updates dynamically as the sensitivity level is changed. See section 2.1.1.
The simple push-button interface is intuitive and eliminates many of the reliability
problems found with tiny DIP switches of conventional detectors.
Operational mode, Frequency, and Sensitivity are all programmed and displayed using
the push-button interface. Settings are stored in non-volatile memory.
Loop diagnostic capabilities incorporated within the LMD Series Loop Monitor enable the
detection of short or open circuit loops and sudden changes of inductance exceeding 25
percent of the nominal inductance. Each type of fault is signified by the fault indicator
emitting a different flash sequence. This information can greatly assist the user in the
diagnosis of loop related problems.
Eberle Design Inc.
LMD301, LMD302, and LMD304
Series Operations Manual
Section 1
GENERAL
®
Channels
One Channel
One Channel
One Channel
Two Channel
Two Channel
Two Channel
Four Channel
Four Channel
Why guess when you can know!
®
display shows the relative strength of the call while a vehicle
Series is a single channel inductive loop
®
Series is a two channel
Features
Solid State Outputs
Delay and Extension Timing
Solid State Outputs
Delay and Extension Timing
Solid State Outputs
®
Series is a
®
display
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