EGE Elektronik Sensor with Integrated Amplifier Productseries SNS 450-A4-WR2

Description

The EGE Elektronik Sensors with Integrated Amplifier Productseries SNS 450-A4-WR2 is engineered for decentralized automation where 230V AC power is the standard. The “WR2” designation indicates its internal configuration for high-voltage AC operation, featuring a built-in relay that provides a flexible changeover (SPDT) contact. This allows the sensor to act as a standalone safety switch, directly triggering alarms, valves, or motor starters when flow rates drop below a specified threshold.

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	SNS 450-A4-WR2
Product ID	P11365
Detection range water	1 … 150 cm/s
Detection range Oil	3 … 300 cm/s
Process connection	M18x1,5
Sensor length L	47 mm
Output	switching output
Output function	relay / change-over
Supply voltage	230 V AC +/- 15 %
Current consumption max.	35 mA
Switching voltage max.	250 V AC / 60 V DC
Switching current max.	4 A AC / 4 A DC
Switching power max.	1000 VA / 60 W
Reverse polarity protection	✓
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
Display flow	LED-Array
Protection [EN 60529]	IP 67
Electrical connection	2 m PVC-cable 5×0.5 mm²
Accessories	adapter SDA-SCS-G1/4 (Z01200), adapter SDA-SCS-G1/2-37 (Z01208), adapter SDA-SCS-G1/2 (Z01201)
Accessories (in scope of delivery)	2 x gasket G1/2 AFM 34, screwdriver
Note	with longer cable available on request

Features

Potential-Free Relay Output: Features a changeover (SPDT) contact for versatile switching of AC or DC loads.
Thermodynamic Measurement: Solid-state design with no moving parts prevents mechanical failure and clogging.

Applications

Industrial Cooling Towers: Monitoring water circulation in AC-powered large-scale cooling systems.
Safety Interlocks: Providing flow-based interlocks for industrial ovens, heaters, and high-power transformers.
Pump Dry-Run Prevention: Protecting high-capacity pumps in wastewater and water treatment facilities.