LIQUID HYDROCARBON LEAK DETECTORS

Different technologies in line with your applications and needs

There are many potential sources of leaks in a hydrocarbon depot: retention tanks, pumping units, settling tanks, etc…

The different liquid hydrocarbon leak detectors :
DOCIL HK detector

DOCIL HK 1H detector : Standard hydrocarbon leak detector
DOCIL HK 2EH detector : Hydrocarbon leak detector with water presence detection
DOCIL HK 2HH detector : Hydrocarbon leak detector using two redundant optical sensors
DOCIL HK 1F detector : Hydrocarbon leak detector when water can reach levels higher than 1 m (storm basin, for example)

DOCIL HK probe

Liquid hydrocarbon leak detectors

The DOCIL HK probe probe operation is based on :

The LARCO optical sensor : DOCIL SENSOR

DOCIL C HK DETECTOR CHARACTERISTICS

Detection :

Detects the hydrocarbons whether or not water is present

Testability :

Very simple test. Simply plunge the float into a bucket of water making sure that the optical sensor is immersed.

Simple wiring :

A single one-pair cable is necessary to connect the detector to the processing cabinet.

Adaptability :

LARCO offers various models of liquid hydrocarbon detectors to suit the various installation conditions (settling tank, retention tank, etc.) and requirements of its customers

PRINCIPLE OF THE DOCIL C HK DETECTOR

The DOCIL C HK detector operation is based on the principle of buoyant force

A DOCIL optical sensor is fixed to a float designed to include the following properties :

  • The float density and shape make it sink far more into the hydrocarbon than into water
  • This therefore means that no unwanted alarm will be tripped due to the presence of water
  • In addition, this guarantees that an alarm will be tripped in the presence of hydrocarbon, whether or not water is present

Standard hydrocarbon leak detector :
DOCIL C HK1H detector

Out of hydrocarbon, the plunger is subject to two forces: A single DOCIL sensor is fixed to the float.

Hydrocarbon leak detector when water can reach levels higher than 1 m (storm basin, for example) :
DOCIL C HK 1F detector

A single sensor is fixed to the float.

Hydrocarbon leak detector with water presence detection :
DOCIL C HK2EH detector

Two optical sensors are fixed to the float.

Hydrocarbon leak detector by 2 redundant optical sensors :
Détecteur DOCIL C HK2HH

Two optical sensors are fixed to the float.

DOCIL sensor - LARCO

The DOCIL sensor comprises a glass cone and an electronic circuit with, among other things, an infrared luminous signal transmitter and a receiver.
The DOCIL sensor works on the optical reflection/refraction principle.

DOCIL sensor characteristics

  • Accuracy: 0.1 mm
  • Response time: 1 ms
  • This sensor is ATEX certified

When the glass cone is not immersed in the liquid, the optical signal is reflected entirely towards the transmitter :

Conversely, when the cone is immersed in a liquid (hydrocarbon), the luminous signal is refracted and the receiver no longer receives the signal, thereby triggering an alarm :

NECESSARY INFORMATION

Characteristics of the product to be detected (origin, density, colour)
Location of the desired detection (pump house, bowl…..)
User site