EGE Elektronik Sensor with Integrated Amplifier Productseries ST 521/2 KH

EGE Elektronik Sensors with Integrated Amplifier Productseries ST 521/2 KH is the authoritative choice for flow control in systems where standard integrated sensors reach their thermal limits.

Description

The EGE Elektronik Sensors with Integrated Amplifier Productseries ST 521/2 KH is the authoritative choice for flow control in systems where standard integrated sensors reach their thermal limits. The “KH” designation identifies this unit as a high-temperature specialist. It utilizes a specialized thermal decoupling design—a physical separation between the measuring probe and the electronics—that protects the integrated amplifier from process heat, allowing for continuous operation in media up to 120°C. Operating on the thermodynamic principle, the ST 521/2 KH uses a solid-state sensing element to monitor flow velocity. This technology is inherently superior for high-temperature cycles because it contains no moving parts (no paddles or turbines). This eliminates the risks of mechanical seizing, spring fatigue, or material warping often caused by the high thermal expansion of metal components in hot fluids.

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

TYPEST 521/2 KH
Product IDP11261
Mediumwater, oil
Detection range water1 … 150 cm/s
Detection range air1 … 40 m/s
Detection range Oil3 … 300 cm/s
Process connectionG1/2
Sensor length L80 mm
Ambient temperature-20 … 160 °C
Medium temperatur fluids10 … 160 °C
Medium temperature air/gas10 … 135 °C
Temperature gradient fluids250 K/min
Temperature gradient gaseous media20 K/min
Start-up time typ.8 s (5 … 20 s)
Reaction time typ.3 s (2 … 20 s)
Compressive strength60 bar
Material sensor touched by mediumstainless steel AISI 316 Ti
Material housingstainless steel AISI 316 Ti
Protection [EN 60529]IP 67
Electrical connection2 m FEP-cable 4×0.25 mm²
Accessories (in scope of delivery)2 x gasket G1/2 AFM 34
Associated amplifiersSKM 420, SKZ 400

Features

  • Integrated Evaluation Amplifier: Simplifies electrical architecture by performing signal processing within the sensor head.

  • Thermodynamic Measurement: Solid-state design ensures a maintenance-free lifecycle and immunity to mechanical wear.

Applications

  • Thermal Oil Systems: Monitoring the presence of high-temperature heat transfer fluids in circulation loops.

  • Steam Condensate Return: Verifying flow in hot water return lines to ensure boiler efficiency.

  • Boiler Feed Water: Reliable monitoring of pre-heated water supply to prevent pump dry-run.