EGE Elektronik Sensor with Integrated Amplifier Productseries SN 450/3-A4-WR2

Description

EGE Elektronik Sensors with Integrated Amplifier Productseries SN 450/3-A4-WR2 is the authoritative solution for flow monitoring in large-scale industrial infrastructure. The “/3” designation indicates the extra-long probe variant, providing a significant reach of approximately 67mm. In large pipelines, flow velocity is often stagnant or turbulent near the pipe wall; this extended probe ensures the active thermodynamic sensor tip is positioned in the laminar flow zone, providing the most accurate “flow/no-flow” data possible.

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	SN 450/3-A4-WR2
Product ID	P11083
Medium	water, oil
Detection range water	1 … 150 cm/s
Detection range Oil	3 … 300 cm/s
Process connection	G1/2
Sensor length L	120 mm
Output	switching output
Output function	relay / change-over
Supply voltage	230 V AC +/- 15 %
Current consumption max.	30 mA
Switching voltage max.	250 V AC / 60 V DC
Switching current max.	4 A AC / 4 A DC
Ambient temperature	-20 … 70 °C
Medium temperature	-20 … 80 °C
Temperature gradient fluids	250 K/min
Start-up time typ.	8 s (2 … 15 s)
Reaction time typ.	2 s (1 … 13 s)
Compressive strength	100 bar
Material sensor touched by medium	stainless steel AISI 316 Ti
Material housing	PBT, PVC
Display flow	LED-Array
Protection [EN 60529]	IP 67
Electrical connection	2 m PVC-cable 5×0.5 mm²
Accessories (in scope of delivery)	2 x gasket G1/2 AFM 34, screwdriver
Note	with longer cable available on request

Features

Extra-Long Probe Reach (/3): ~67mm probe length, ideal for large pipes, deep-seated welding sockets, and insulated piping.
Integrated 230V AC Amplifier: Operates directly on standard AC grids, eliminating the need for DC power supplies or external transducers.
Potential-Free Relay Output: Features a changeover (SPDT) contact for universal switching of alarms, valves, or motor starters.
Thermodynamic Measurement: Solid-state design with no moving parts prevents mechanical failure and resists debris accumulation.

Applications

Large Bore Cooling Pipes: Monitoring water flow in main distribution lines for power plants and heavy manufacturing.
Insulated Piping Systems: Extra-long reach allows the sensor to bypass thick thermal insulation layers while maintaining tip immersion.
Pump Dry-Run Prevention: Protecting high-capacity pumps in large-bore intake systems.