EGE Elektronik Sensor for Explosive Productseries ST 104 KH

Description

EGE Elektronik Sensor for Explosive Productseries ST 104 KH is the authoritative solution for applications where explosive risks and high thermal loads coexist. Designed for Zone 0 and Zone 1 gas atmospheres (and corresponding dust zones), this sensor ensures that flow monitoring does not become an ignition source, even when the medium is significantly heated. Operating on the thermodynamic principle, the ST 104 KH uses no moving parts. This is critical in explosive areas, as it eliminates the risk of mechanical friction, sparks, or static buildup associated with paddles or turbines. The “KH” designation indicates specialized thermal decoupling, which protects the sensor’s internal components from media temperatures reaching 120°C.

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	ST 104 KH
Product ID	P11182
Medium	water, oil
Detection range water	1 … 100 cm/s
Detection range Oil	3 … 200 cm/s
Process connection	NPT1/2
Sensor length L	40 mm
Output	output with separate amplifier
Ex area uf use	Zone 1, Zone 21
ATEX Certificate	TÜV 97 ATEX 1218
ATEX marking gas	Ex II 2 G Ex ib IIC T6…T3 Gb
ATEX Marking dust	Ex II 2 D Ex ib IIIC T125°C Db
Temperature range in T6	10 … 40 °C
Temperature range in T5	10 … 55 °C
Temperature range in T4	10 … 90 °C
Temperature range in T3	10 … 120 °C
Temperature range dust-Ex	-20 … 85 °C
Maximum values	Ui = 13.65 V / li = 200 mA / Pi = 0.69 W / Ci = 0.45 nF / Li = 1.80 µH
Start-up time typ.	8 s (2 … 18 s)
Reaction time typ.	2 s (1 … 13 s)
Compressive strength	60 bar
Material sensor touched by medium	stainless steel AISI 316 Ti
Material housing	stainless steel AISI 316 Ti, brass
Protection [EN 60529]	IP 67
Electrical connection	2 m FEP-cable 4×0.25 mm²
Associated amplifiers	SZAb 400 EX-GR, SZAb 400 EX-WR115, SZAb 400 EX-WR230, SZAb 400 EX-GA

Features

Intrinsically Safe Design: Engineered to operate at energy levels insufficient to ignite flammable gases or dust.
Small G1/4″ Thread: Optimized for small pipes and compact manifold integration in hazardous zones.
Thermodynamic Reliability: Solid-state design eliminates mechanical failure points and spark risks.

Applications

Petrochemical Refining: Monitoring hot solvent or reagent flow in hazardous process areas.
Pharmaceutical Reactors: Flow verification in heated distillation columns involving flammable vapors.
Chemical Pilot Plants: High-precision flow monitoring in small-bore, high-temperature hazardous loops.