EGE Elektronik Sensor with Integrated Amplifier Productseries ST 421 S-L80

Description

The EGE Elektronik Sensors with Integrated Amplifier Productseries ST 421 S-L80 is the authoritative choice for facilities requiring decentralized flow monitoring in large-bore piping. The 80mm (L80) probe length ensures that the sensing tip bypasses the slower-moving fluid layers near the pipe wall, reaching the center of the flow profile for a more accurate and representative measurement. The “S” designation indicates the inclusion of an M12 plug connector, which is essential for modern “Industry 4.0” maintenance strategies. This allows for rapid installation, tool-free sensor replacement, and significantly reduced downtime during service intervals.

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	ST 421 S-L80
Product ID	P10904
Medium	water, oil
Detection range water	1 … 150 cm/s
Detection range Oil	3 … 300 cm/s
Process connection	G1/2
Sensor length L	80 mm
Ambient temperature	-20 … 80 °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	stainless steel AISI 316 Ti
Protection [EN 60529]	IP 67
Electrical connection	M12 connector
Accessories	connecting cable SLW 4-2 (Z00446), connecting cable SLG 4-2 (Z00445)
Accessories (in scope of delivery)	2 x gasket G1/2 AFM 34
Associated amplifiers	SKM 420 GR, SKM 420 GSP, SKM 420 GA, SKM 522 GR, SKM 522 WR, SKZ 400 GR, SKZ 400 WR-115, SKZ 400 WR

Features

Integrated Evaluation Amplifier: Signal processing is performed within the sensor head, saving valuable control cabinet space.
Thermodynamic Measurement: Solid-state technology ensures a maintenance-free lifecycle with high resistance to debris.
Premium V4A Stainless Steel: High-grade 1.4571 construction for maximum durability in aggressive media.

Applications

Large Diameter Infrastructure: Monitoring main cooling headers in industrial plants and data centers.
Insulated Piping Systems: Reaching through thermal insulation layers to ensure direct fluid contact.
Process Water Treatment: Monitoring flow in large aeration or filtration pipes where mechanical switches would fail.