Description
Conductive electrodes type EF2...5 are approved by the “DIBt” (German Institute for Structural Engineering) as liquid level limit switches for the overfill protection of containers for storing water-endangering liquids
Technical Data
Properties
- Protection class EN60529
- IP 65
- connection thread
- G1" | G1¼" | G1½"
- Union nut
- G2¾" | S 100x8
- ltdata.BetriebstemperaturPE/PVC
- atmospheric
- ltdata.BetriebstemperaturPPH
- 90°C
- ltdata.BetriebstemperaturPTFE
- 100°C
- Operating pressure
- atmospheric
- Resistance value of line monitoring
- 22 kΩ / 100 kΩ
- ltdata.AbstandhalterabLänge>1000mm
- 1 per 1000 mm
- rod length
- max. 6.000 mm
- Rod diameter
- 4mm | 6 mm
Material
- Screw connection
- PPH | PE | PVC | PTFE
- Sensor rods
- Edelstahl (1.4571), Hastelloy C, Titan, Tantal
- ltdata.Beschichtung
- PTFE
- ltdata.
EF2...5 configuration
Your Configuration
- Basename
- EF
- Elektrodenanzahl
- Verschraubungsmaterial
- Stabmaterial
- Stabdurchmesser
- Elektrodenbeschichtung
- Anschlussgewinde
- Kabelbruchwiderstand
- Auswerteelektronik
- Stablänge
- SIL2
Further product information
The EF2...5 fittings are made of PE, PPH, PVC or PTFE, depending on the requirements. The electrode rods are made of stainless steel 1.4571, Hastelloy C, titanium or tantalum. This makes the EF2...5 conductive electrodes suitable for use with highly aggressive media.
The electrode relays ER-107..., ER-217... or ER-145... (intrinsically safe control circuit), approved for overfill and leakage detection (Z-65.13-100 and Z-65.13-405) supply a measuring voltage that causes an operating current to flow through the signal line via the resistor built into the conductive electrode. If the conductive medium rises to the height 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. 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 (ET450/451) 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 mains failure, the output contacts switch as when the response level is reached.
Documents and Downloads
Settings instructions
technical description
Mounting and installation instructions
test certificate
declaration of conformity
products in this series
5 variants are displayed
Accessoires
OAA-300
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ER-107
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