The EGE Elektronik Sensors with Integrated Amplifier Productseries STK 421 K-A4 is the authoritative choice for decentralized flow monitoring where durability and space efficiency are equally important.
The EGE Elektronik Sensors with Integrated Amplifier Productseries STK 421 K-A4 is the authoritative choice for decentralized flow monitoring where durability and space efficiency are equally important. The “STK” series is recognized for its shortened housing length compared to the standard ST series, making it ideal for integration into manifold blocks, machine frames, and modern, dense piping layouts.
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.
| TYPE | STK 421 K-A4 |
|---|---|
| Product ID | P10408 |
| Medium | water, oil |
| Detection range water | 1 … 150 cm/s |
| Detection range Oil | 3 … 300 cm/s |
| Process connection | G1/2 |
| Sensor length L | 31 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, brass |
| Protection [EN 60529] | IP 68 |
| Electrical connection | 2 m PVC-cable 4×0.25 mm² |
| 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 |
Ultra-Compact “STK” Design: Shortened housing is optimized for installations where space is at a premium.
Integrated Evaluation Amplifier: Signal processing is performed within the sensor head, eliminating the need for external rail-mounted modules.
Thermodynamic Measurement: Solid-state design ensures long-term reliability and zero maintenance.
Machine Tool Coolant: Monitoring the flow of cutting fluids to prevent tool overheating in compact CNC machines.
Welding Robot Cooling: Verifying water flow through the welding gun and power cables.
Pump Dry-Run Protection: Acting as a safety interlock for high-value pumps in space-restricted skids
