EGE Elektronik Air Flow Sensor Productseries LC 521/2 GSP-Ex22

The EGE Elektronik LC 521/2 GSP-Ex22 is the authoritative solution for monitoring airflow in large-scale industrial systems where combustible dust hazards are present.

Description

The EGE Elektronik LC 521/2 GSP-Ex22 is the authoritative solution for monitoring airflow in large-scale industrial systems where combustible dust hazards are present. Certified to ATEX Category 3D, this sensor is engineered for Zone 22, providing a safe and reliable monitoring point for heavy-duty extraction systems, silos, and pneumatic lines without the need for additional intrinsically safe barriers. The defining feature of the LC 521/2 is its significantly extended probe length. In large-diameter ventilation shafts or heavily insulated piping, standard-length probes often fail to reach the laminar flow zone, leading to inaccurate readings. The double-length probe of the /2 variant ensures the calorimetric sensor tip is positioned perfectly in the air stream. Because it utilizes the thermal (calorimetric) principle, the sensor is completely solid-state—ideal for dusty environments where mechanical vanes or paddles would quickly jam or corrode.

Brand

EGE-Elektronik

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

TYPELC 521/2 GSP-Ex22
Product IDP11407
Thread/sleeveG1/2
Mediumgaseous media
Detection range air0.5 … 20 m/s
Sensor length L101 mm
Outputswitching output
Output functionPNP-NO
Supply voltage24 V DC +/- 10 %
Current consumption max.35 mA
Switching current max.200 mA
Ex area uf useZone 2, Zone 22
Certificate of conformityEGE 21.0010 X
ATEX marking gasEx II 3 G Ex ic mc IIC T4…T3 Gc
Ex Marking ATEX DustEx 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 strength1 bar
Material housingstainless steel AISI 316 Ti, ceramics, PBT-GF30, PUR
Display flow3-colour-illuminated dot red / yellow / green
Protection [EN 60529]IP 67
Electrical connection2 m PUR-cable 3×0.5 mm²

Features

  • High-Grade Stainless Steel (V4A): Maximum protection against abrasive dust and corrosive gaseous media.

  • Integrated LED Trend Chain: Immediate visual diagnostics of flow velocity and switching state.

  • Adjustable Sensitivity: Wide detection range for air velocities from 0.5 to 20 m/s.

Applications

  • Industrial Kilns & Ovens: Deep-insertion monitoring of cooling or process air in high-volume heating systems.

  • Pneumatic Conveying: Supervising the transport of powders in large-bore Zone 22 pipelines.