EGE Elektronik Sensor Amplifiers Productseries SKM 421 GSP

Description

The EGE Elektronik SKM 421 GSP is the authoritative solution for complex process monitoring. While standard amplifiers only evaluate flow, the SKM 421 series is designed to work with EGE’s specialized dual-function probes to provide a comprehensive picture of your media’s status. By monitoring both the flow rate and the temperature, you can ensure that cooling systems are not only flowing but are also effectively removing heat. The “GSP” designation signifies the use of a PNP transistor output. This solid-state switching technology is vastly superior to mechanical relays in high-cycle environments, offering an infinite mechanical lifespan and nearly instantaneous response times. This makes the SKM 421 GSP a perfect match for high-speed PLC inputs and modern digital control architectures.

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	SKM 421 GSP
Product ID	P11393
Output	switching output
Output function	PNP-NO
Supply voltage	24 V DC +/- 20 %
Switching current max.	400 mA (20 °C)
Reverse polarity protection	✓
Ambient temperature	-20 … 60 °C
Protection [EN 60529] terminal	IP 20
Protection [EN 60529] housing	IP 40
Electrical connection	terminal screws
Accessories (in scope of delivery)	screwdriver
Amplifier for probe	LTZ…

Features

Independent Threshold Adjustment: Separate controls for Flow and Temperature setpoints.
Adjustable Time Delay: Includes a 0…25 second switch-off delay to prevent false trips during turbulent flow conditions.
Diagnostic LED Array: Dedicated LEDs for Power (green), Flow status (yellow), and Temperature alarm (red/yellow).

Applications

Induction Furnaces: Ensuring cooling water is flowing and remains below critical temperature thresholds.
Plastic Injection Molding: Supervising mold temperature and coolant flow to ensure consistent product quality.
Power Electronics Cooling: Monitoring heat sinks in large inverters or transformers where overheating is as dangerous as flow loss.
Dosing Systems: Verifying that temperature-sensitive chemicals are within range during delivery.