Description
The conductive electrodes EF3...5 are approved by the "DIBt" as overfill prevention devices for liquids hazardous to water.
Technical Data
Properties
- connection
- integrierter Anschlusskopf
- Protection class
- IP 65
- connection thread
- G 1¼"
- Material Screw connection
- PPH
- Material electrode rods
- Edelstahl (1.4571), Hastelloy C, Titan, Tantal
- material coating
- PTFE
- Coating length
- voll = ganzer Stab (10 mm am Stabende sind blank) teil = ca. 250 mm von oben
- Rod diameter
- 4 mm, 6 mm
- rod length
- max. 6 m
- Operating temperature
- 85 °C
- Operating pressure
- atmosphärisch
- Spacer
- ab Länge > 1000 mm je 1000 mm 1 Abstandshalter
Properties electronic part
- Operating temperature
- –20...+85 °C
- Storage temperature
- –30...+85 °C
- nominal voltage
- 24 V DC ± 15%
- Power consumption
- max. 2 W (Klemme A1, A2)
- Switching voltage
- max. 250 V AC, 150 V DC min. 5 V DC (Relais mit Kombi-Goldkontakten)
- Switching current
- max. 3 A AC, 3 A DC min. 1 mA
- Switching capacity
- max. 750 VA, 150 W
- Sensitivity
- 3k ... 100 kΩ in vier Stufen (3 k, 10 k, 30 k, 100 kΩ) wählbar
EF 3…5 24 V configuration
Your Configuration
- Basename
- E
- Sicherheitsfunktion
- Elektrodenanzahl
- Anschlussgewinde
- Stabmaterial
- Stabdurchmesser
- Beschichtung
- Auswerteelektronik
- Stablänge
- SIL
Further product information
With the additional rods of the conductive electrode EF3...5 further limit values or a min-max circuit can be realized. The connection head is prepared for the installation of an electronic unit (ET-4xx, see next page). With this electronic evaluation unit (24 V DC supply voltage and 4 NO contacts), an overfill contact with up to 3 limit values or 1 limit value with a min-max circuit can be implemented.
Electronic part in connection head
The electrode relay (circuit board) in the connection head of the multiple electrodes (EF-3...5-fold) can convert 4 independent input signals into 4 switching signals (normally open contact). With 4 measuring points, measuring tasks such as overfill protection, dry run protection and two-point control of pumps can be realized.
- Relay outputs in closed-circuit operation Normally open contact / NO
- Standard setting for the most common conductive liquids: no adjustment required
- Four measuring ranges (3 k, 10 k, 30 k and 100 k) selectable at DIP switches
- Switching delay (rise / fall) 0.5 or 2 sec. selectable at DIP switch
- Additional function selectable at DIP switch: Two-point control (min/max) with the functions at terminal 12 (E1) Overfill protection at terminal 22 (E2) Emptying at terminal 32 (E3) Filling at terminal 42 (E4) Dry run
Documents and Downloads
Data sheet
Mounting and installation instructions
test certificate
declaration of conformity
Accessoires
OAA-300
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