Description
The conductive electrode EFV2 is approved by the "DIBt" as an overfill prevention device for liquids hazardous to water.
Technical Data
Connection
- Box
- Polyesterdose (PO)
- Cable
- Kabel (TPK)
- Plug
- Stecker (ST)
Properties
- Protection class
- IP 65
- connection thread
- G2"
- Union nut
- G2¾", S 100x8
- Material Screw connection
- PE, PVC, PPH, PVDF
- Material Sensor rods
- Edelstahl (1.4571), Hastelloy C, Titan, Tantal, Kohlestifte
- Operating temperature
- PE, PVC: atmosphärisch PPH : 90 °C, PVDF: 100 °C
- Operating pressure
- atmosphärisch
- Resistance value of line monitoring
- 22 kΩ / 100 kΩ je nach Ausführung
Operating temperature
- PE
- atmosphärisch
- PVC
- atmosphärisch
- PPH
- 90 °C
- PVDF
- 100 °C
Technical specifications electronic part
- Operating temperature
- –20...+85 °C
- Storage temperature
- –30...+85 °C
- nominal voltage
- 24...30 V DC
- Power consumption
- max. 2 W
- Switching voltage
- max. 230 V AC / V DC min. 5 V DC (CMOS-Relais)
- Switching current
- max. 0,12 A AC / A DC min. <1 mA
- Switching capacity
- max. 25 VA / W
- Sensitivity
- 3k … 100 kΩ
EFV2 | EFV2 24V configuration
Your Configuration
- Basename
- E
- Sicherheitsfunktion
- Verstellbar
- Elektrodenanzahl
- Verschraubungsmaterial
- Stabmaterial
- Anschluss
- Anschlussgewinde
- Kabelbruchwiderstand
- Auswerteelektronik
- Standaufnehmerlänge
- SIL
Further product information
Fitting and tube of the EFV2 are made of PE, PPH, PVC or PVDF. The electrode rods are made of stainless steel 1.4571, Hastelloy C, titanium, tantalum or glass-carbon pins. This makes the conductive electrode EFV2 suitable for use with highly aggressive media.
The conductive electrode EFV2 is adjustable, the response height can be adjusted on site.
The electrode relays ER-107..., ER-217... or ER-145... (intrinsically safe control circuit) supply a measuring voltage which causes an operating current to flow through the signal line via the resistor installed in the conductive electrode. If the conductive medium rises to the level of the electrode tips of the level detector, a circuit is closed. This causes the potential-free output contacts on the electrode relay to switch over.
In order to cope with the different conductivities of the liquids, the electrode relays ER-107..., ER-217... or ER-145... can be supplied in two different response ranges (1...30 k / 6...90 k). Within these ranges, the response value can be adjusted by means of a potentiometer. Alternatively, an evaluation circuit (ET-470a 24V) can be integrated directly in the connection head.
If there is a line interruption, the output contacts are switched over (as in the case of an alarm caused by reaching the response level or voltage failure). If a line short-circuit occurs, this corresponds to an "alarm message" (as in the case of reaching the response level). The electrode relay operates according to the closed-circuit current principle, i.e. in the event of a power failure, the output contacts switch as they do when the response height is reached.
- High chemical resistance
- Adjustable response height
- Use in category 2 (Ex zone 1) with ER-145...
- Line monitoring for cable short circuit / cable breakage
System structure
The overfill protection consists of the conductive electrode EFV2 and the electrode relays ER-107, ER-217 or ER-145. The overfill protection can be connected to our "Optical Acoustic Alarm Devices" of the type series OAA-300.
PO Junction box with evaluation electronics
The ET-470a electronic part is installed in the connection head of the EF2 electrode and has a supply voltage of 24 DC. The electronic part has 1 changeover contact and 1 optocoupler.
Documents and Downloads
Data sheet
Mounting and installation instructions
test certificate
declaration of conformity
Accessoires
OAA-300
go to product
