EGE Elektronik Air Flow Sensor Productseries LC 518 GA-Ex22

Description

The EGE Elektronik LC 518 GA-Ex22 is the authoritative solution for air flow supervision in areas where combustible dust poses a risk. Certified to ATEX Category 3D, this sensor is engineered for Zone 22 applications, allowing for safe installation in environments like flour mills, woodworking shops, and plastic processing plants without the complexity of intrinsically safe barriers. Unlike mechanical flow switches, the LC 518 GA-Ex22 is a thermal (calorimetric) monitor. It functions by measuring the cooling effect of the moving air on a heated sensor tip. This “no-moving-parts” design is critical in dusty environments, as it prevents the clogging, jamming, or mechanical wear common with vane-style anemometers.

Brand

EGE-Elektronik

EGE-Elektronik Spezial-Sensoren GmbH has been developing and manufacturing special purpose sensors for automation applications since 1976. The company serves leading international producers from a wide range of industries. Its product portfolio includes flow controllers, infrared, opto and ultrasonic sensors, capacitive proximity switches, light barriers and inductive proximity switches. EGE also provides sensors for highly sensitive applications, e. g. hazardous areas. The development department`s highly qualified staff cooperates closely with all customers, ensuring continuous product updates and enhancement.

EGE has been a pioneer in the field of flow controller and an innovator and decisive participant in the development of today's globally utilized thermal flow controllers. The in-house EMC and test laboratories ensure that all inspections and tests required for permits and conformity certificates are carried out quickly and reliably. Product quality is guaranteed with a continuously monitored quality management system in accordance with EN ISO 9001:2000.

Specifications

TYPE	LC 518 GA-Ex22
Product ID	P11421
Thread/sleeve	M18x1
Medium	gaseous media
Detection range air	0.5 … 20 m/s
Sensor length L	80 mm
Output	analog output 4…20 mA
Output function	non linear
Supply voltage	24 V DC +/- 10 %
Current consumption max.	35 mA
Ex area uf use	Zone 2, Zone 22
Certificate of conformity	EGE 21.0010 X
ATEX marking gas	Ex II 3 G Ex ic mc IIC T4…T3 Gc
Ex Marking ATEX Dust	Ex II 3 D Ex ic mc IIIC T135 °C Dc
Temperature range in T4	-10 … 60 °C
Temperature range in T3	-10 … 60 °C
Temperature range dust-Ex	-10 … 60 °C
Start-up time typ.	20 s
Reaction time typ.	5 s
Compressive strength	1 bar
Material housing	stainless steel AISI 316 Ti, ceramics, PBT-GF30, PUR
Display flow	2-colour-illuminated dot red / green
Protection [EN 60529]	IP 67
Electrical connection	2 m PUR-cable 3×0.5 mm²

Features

Calorimetric Detection: Solid-state sensing principle; immune to dust buildup and mechanical failure.
NPN Switching Output (GA): Reliable solid-state switching for NPN-logic control circuits.
Integrated Evaluation: No external amplifier required; all electronics are housed within the M18 probe.
Stainless Steel V4A Housing: Exceptional resistance to abrasion from airborne particles and corrosive media.

Applications

Industrial Dust Extraction: Monitoring suction flow in NPN-controlled metal grinding or sanding stations.
Pneumatic Grain Transport: Ensuring constant air velocity in silos and agricultural processing lines (Zone 22).
Plastic Powder Conveying: Supervising the transport of raw plastic polymers to prevent line blockages.
Sugar and Flour Mills: Monitoring ventilation and cooling air in explosive dust zones.
Chemical Mixing: Airflow supervision in dry-powder chemical processing plants.