Ramset Diablo Loop Detector (DSP-11) Single Relay

Details

Ramset Diablo Loop Detector (DSP-11) Single Relay

The Ramset 800-85-35 is a top quality fail safe loop detector from Diablo Controls featuring the industry standard 11 pin base. The DSP-11 / 800-85-35 operates on any voltage ranging from 11 - 30 volts of AC or DC and draws about 35 milliamps of current with no vehicle presently on the loop. This micro-sized loop detector will automatically adjust its own sensitivity levels when used on different sized loops. The DSP-11's detector loop inductance should be between 20 and 2000 microhenries.

The DSP-11 features LED indicators, a green Power LED blinks that will blink once per second to indicate the detector is powered on and currently operating, and a red Detect LED that will only turn on when a vehicle is over the loop detection area. If there happens to be a loop circuit failure then the green LED flashes at twice per second to alert you of an open circuit failure, and will flash ten times per second if there is a shorted loop circuit.

Fail Safe vs Fail Secure

A fail safe loop detector will output "detect" when a loop circuit is failed. This is always much more useful on a safety loop. On the free exit loop this will keep your gate open until the situation is fixed. This will be useful in an application where it is important to allow traffic flow to continue.

Alternatively a fail secure loop detector will never output "detect" when the loop circuit is failed, keeping the gate closed or secure, useful in high security areas where containment or security is needed.

Remember that the DSP-11 is a fail safe detector and you should never use a fail secure detector on any safety loop.