EGE Elektronik Sensor Air Flow Sensors Productseries LG 518 GA

Description

The EGE Elektronik LG 518 GA is the authoritative choice for industrial processes that demand quantitative data rather than a simple switching signal. The “GA” designation identifies this unit as an analog transmitter, converting the detected air velocity into a standardized 4-20 mA signal. This allows for sophisticated integration into PLCs for variable speed fan control, energy usage logging, and precise process regulation. The G1/2 process thread distinguishes this model from standard flange-mounted sensors. It allows the LG 518 GA to be screwed directly into a T-piece or a welded sleeve, creating a hermetic, pressure-resistant seal capable of withstanding up to 20 bar. This makes it the ideal solution for monitoring secondary compressed air lines, inert gas blankets, or specialized ventilation pipes.

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	LG 518 GA
Product ID	P11240
Medium	air, non-explosive gas
Detection range air	0.5 … 15 m/s
Process connection	M18x1
Output	analog output 4…20 mA
Output function	non linear
Supply voltage	24 V DC +/- 20 %
Current consumption max.	100 mA
Load RL	200 … 500 Ω
Reverse polarity protection	✓
Ambient temperature	-20 … 70 °C
Medium temperature	-20 … 70 °C
Temperature gradient gaseous media	200 K/min
Start-up time	20 … 40 s
Reaction time typ.	3 s
Material sensor touched by medium	BR-Ni, PBT
Material housing	brass-Ni, PBT
Protection [EN 60529]	IP 67
Electrical connection	2 m PVC-cable 3×0.5 mm²
Accessories (in scope of delivery)	2 x lock nut M18x1, screwdriver

Features

Continuous Analog Output (4-20 mA): Provides precise, real-time data for automated process control and trend logging.
Threaded G1/2 Mounting: Ensures a secure, leak-proof, and pressure-resistant (up to 20 bar) installation in piping systems.
Solid-State Reliability: Thermodynamic measurement principle eliminates moving parts for a maintenance-free service life.

Applications

Compressed Air Management: Continuous monitoring of flow rates to optimize compressor efficiency and detect leaks.
Nitrogen Line Monitoring: Precise tracking of inert gas flow in pharmaceutical or chemical processing.
Variable Speed Fan Control: Using the 4-20 mA signal to modulate fan intensity based on actual air demand.