Automatikprodukter - Controller and Sensor Technology

Order and logistics		Updated: 10 May 2020

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GAS DETECTION - PENTANE, ATEX DETECTORS

GAS MONITORING IN THE INDUSTRIAL SECTOR
Automatikprodukter has innovative technologies for protecting human life and plants.

In chemical and petrochemical industries, the permanent monitoring of rooms, halls and
equipments where an explosive or toxic atmosphere can form is essential.

Reliable protection of people requires constant monitoring of toxic and combustible gases and vapours.

In addition, monitoring of pentane deficiency and surplus must be performed.

AP offers a wide range of methods for the detection of gases and develops on this basis individual gas detectors for those industrial applications where extreme environmental conditions are prevailing.

Gas Detector for Zone 1 and Zone 2
with display

Press	Zone 2	Zone 1	Zone 1, sealed

Release	Datasheet	Datasheet	Datasheet

		ATEX	CE/SIL

		Guidelines	declaration

The products and solutions can be found in many buildings and industrial applications like
car parks, refrigeration systems or biogas plants.

If you opt for the safe solutions and innovative products by Automatikprodukter, you benefit from many advantages such as quality and availability, responsibility towards the customers and business partners as well as openness to new requirements.

Gas Detector for Zone 1 and Zone 2
without display

		Environment	ATEX

		Declaration	Certificate

The exchangeable sensor X-CHANGE turns the recalibration into a home game:

Delivery of recalibrated sensor cartridges
Easy exchange, no specialized company needs to come to you
Available for every gas type
At guaranteed exchange prices
Increased reliability (SIL2-software)
Important time and cost savings

The X-Change support guarantees a price based on the consumption of the sensor capacitance.

Replacement Sensor Head

ATEX Gas detectors are available for 2 explosion classes as follows:

Both Zone 1 and Zone 2 are available with or without display.

Gas detectors for ATEX Zone 1 are located in a explosion proof enclosure, EEx d

The shell is such that ignition and combustion within the shell of a potential explosive gas mixture is not propagated to the explosive mixture outside the enclosure and the enclosure can thus endure the resulting explosion pressure without damage.

In Zone 1, one can expect an explosive atmosphere to occur during normal operation but the presence of it is relatively short.

The equipment shall not be a source of ignition in normal operation or when an error occurs.

Gas detectors for ATEX Zone 2 are of the design Non-sparking EEx d

EEx nA is a non-sparking piece equipment.

In Zone 2, you need not count with an explosive atmosphere to occur during normal operation, and if it should occur, which is probably rare it is of short duration.

The equipment shall not be a source of ignition during normal operation.

Detector placement for monitoring pentane
In cases where you want to monitor pentane concentration in a room, it is important to bear in mind which gas that could displace the pentane.

Examples of gases that can displace pentane, thereby causing suffocation are the inert gases, such as Nitrogen (N), argon, helium, carbon dioxide, used in various industrial processes, hospitals, etc.

Important to mention here is that the fact that the carbon dioxide in addition to displacing the pentane is also toxic itself.

If there is leakage of pentane, which has a higher density than air and will sink, the pentane detector should be placed low.

If the pentane in a room risks being consumed by any form of combustion, the pentane concentration will be reduced across the room which means that the sensor placement here is not as critical as in the above examples.

High concentrations of pentane
If the pentane concentration in the air increases, the risk of fire dramatically increases. All combustible products will be much more flammable.

Alarm limit is set at 20% LEL.
Inhalation of high pentane concentrations over time can be harmful.

How many detectors are needed in a stationary system?

This must be decided from case to case depending on the local area that you want to monitor, but as a rule of thumb you can use the following:

One detector per 80 - 120m² with additional detectors at locations where leakage is likely occur.

Gas alarm plate for pentane detector

			Non-ATEX

			Datasheet

OAW 24
Combined warning siren and
flashlight for pentane sensors

			Non-ATEX

			Datasheet

OA 24
Flashlight

			Non-ATEX

			Datasheet

Warning Siren for pentane sensors

			Non-ATEX

			Datasheet

OAW 24T
Warning Horn/Flashlight
incl. reset button

			Non-ATEX

			Datasheet

For areas where due to explosive substances special requirements exist
AP offers an extensive repertoire of audible and visual signal devices with different approvals in the Ex area.

The visual and audible signal devices of the Ex series are characterized by a particularly robust construction and insensitivity to environmental influences and chemicals.

These are information, warning and emergency signals for safety, hazard and fire alarm systems, building, industrial and commercial automation systems, disaster warning and danger zones.

The products are suitable for the use in gas and steam atmospheres, as well as in dust atmospheres.

AP offers Ex signal towers, visual Ex signal devices, audible Ex signal devices and visual-audible Ex signal devices.

Key Features