EGE Elektronik Sensor Air Flow Sensors Productseries LTZ 421 K-A2

Description

The EGE Elektronik LTZ 421 K-A2 is the authoritative choice for facilities that need to integrate airflow monitoring directly into AC control circuits. The “LTZ” series is recognized for its space-saving design, making it perfectly suited for installation inside control cabinets, small air ducts, and housing units where larger industrial sensors cannot fit. The “A2” designation signifies the 230V AC power supply, while the Relay output provides a versatile, potential-free contact. This allows the sensor to switch external loads—such as alarm beacons, secondary fans, or PLC inputs—without the need for an additional power supply or signal converter.

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	LTZ 421 K-A2
Product ID	P11100
Medium	air, non-explosive gas
Detection range air	0.5 … 30 m/s
Process connection	G1/2
Sensor length L	48 mm
Ambient temperature	-20 … 80 °C
Medium temperature	-20 … 80 °C
Temperature gradient gaseous media	20 K/min
Start-up time	10 … 90 s
Reaction time	2 … 30 s
Compressive strength	30 bar
Material sensor touched by medium	stainless steel AISI 303
Material housing	stainless steel AISI 303, 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 421 GR, SKM 421 GSP, SKM 420 GA, SKM 522 GR, SKM 522 WR, SKZ 400 GR, SKZ 400 WR-115, SKZ 400 WR

Features

Potential-Free Relay Output: Versatile switching for both AC and DC signal chains or direct load control.
Space-Saving LTZ Housing: Optimized for restricted mounting areas in cabinets and specialized machinery.
Integrated Fixed Cable (-K): 2-meter factory-sealed cable provides a robust and moisture-proof connection.

Applications

Mains-Powered Ventilation: Directly monitoring exhaust or supply fans that operate on 230V AC.
Control Cabinet Safety: Interlocking heating elements or triggering alarms if cooling airflow is lost.
Small HVAC Units: Monitoring airflow in localized air conditioning systems for server rooms or labs.
Industrial Drying Enclosures: Ensuring constant air circulation in small-scale curing or drying processes.