The PD270 can be used to identify the presence of vehicles by means of two independent inductive loops buried under the road and can be used for almost any vehicle detection application.
It includes A-B logic to detect the direction of vehicles, plus many new features including AFS (Automatic Frequency Selection), which ensures less set up time, thereby simplifying the installation of complex multilane access control sites. It also ensures a low cost of ownership.
PD270 detectors, part of the 7 series, are CE tested and approved and come with a 5-year manufacturer’s warranty.
|Self-tuning range:||20μH to 1500μH|
|Sensitivity:||Four step adjustable on the front panel
Ranging from 0.01% DL/L to 0.10% DL/L
ASB (Automatic Sensitivity Boost) selectable
|Frequency:||Automatic Frequency Select (AFS) and separate option to select from 4 frequencies
(Frequency determined by loop geometry)
|AB Logic:||A to B (CH1) & B to A (CH2) Presence or Pulse Selectable|
|Response Time:||200 – 300ms|
|Presence Method:||Permanent or Limited|
|Presence Time:||Permanent presence (infinite)
Limited presence - time dependant upon level of detect and environmental conditions
|Power Fail Memory:||Permanently on, Reset available to clear stored data|
|Drift Compensation:||Incorporated automatic method of tracking changes caused by environmental conditions at a rate approximating 1% DL/L per minute (Presence Time)|
|Anti-locking (Positive DL/L):||Incorporated algorithm accommodates the influence of positive inductance changes, the anti-lock time is 4 seconds|
|Recovery Time:||Set to 80ms allowing for the detector to return to the ambient mode in preparation for arrival of the next detection|
|Output Configuration:||Two output relays
User configurable for: Presence on detect. Pulse on detect
|Protection:||Loop isolation transformer, zener diode clamping on loop input, gas discharge tube|
|Power:||PD274: 12 to 24 V +/- 10% (AC/DC)
PD272: 230V +/- 10% AC