EGE Elektronik Sensor Amplifiers Productseries SKM 420 GR

Description

The EGE Elektronik SKM 420 GR is the authoritative solution for engineers who require a clear, physical switching contact from their remote sensing probes. By separating the sensor probe (located in the process) from the evaluation electronics (located in the control cabinet), the SKM 420 GR protects sensitive components from extreme process temperatures, vibrations, and high pressures. The “GR” designation specifically refers to the unit’s Relay (Galvanic/Relay) output. This change-over (SPDT) contact allows you to switch external AC or DC loads directly or provide a volt-free signal to any standard PLC input card. This flexibility makes it a favorite for retrofitting into existing systems or where high-voltage switching is necessary.

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 420 GR
Product ID	P10530
Output	switching output
Output function	relay NO
Supply voltage	24 V DC +/- 20 %
Switching voltage max.	230 V AC / 30 V DC
Switching current max.	1 A AC / 1 A DC
Switching power max.	125 VA
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	STA…, STB…, STC…, STD…, STK…, ST… (none Ex)

Features

Solid-State Logic: Internal calorimetric evaluation ensures long-term stability and repeatability.
Adjustable Time Delay: Built-in 0…25 second off-delay to stabilize signals in turbulent flow conditions.
Local Diagnostics: Bright LED indicators for Power (green) and Switching State (yellow) for instant status checks.

Applications

Pump Supervision: Protecting pumps from dry-running by triggering a shutdown via the relay if flow is lost.
Cooling Water Circuits: Monitoring flow in welding machines, laser systems, or injection molding units.
Lubrication Systems: Ensuring constant oil flow to heavy-duty bearings and gearboxes.
Filter Monitoring: Signaling a maintenance alarm when flow velocity drops below a set threshold due to clogging.