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Electrode relays and contact protection relays

The electrode relays are used for conductive level detection. levels. The possible applications extend areas where conductive, liquid media are to be detected, controlled to be detected, controlled or regulated. Hereby level detection (overflow / dry run) as well as minimum / maximum as well as minimum / maximum controls can be realised. The contact protection relays are universal measuring transducers, which input signals (resistance values) with "Namur" specification (DIN EN 60947). Namur" specification (DIN EN 60947) into switching signals of floating output contacts.

Protection class EN60529

• clamp : IP20
• Housing : IP40

Technical Data

• Operating temperature : -20...+60 °C
• Storage temperature : -30...+80 °C
• Output contacts : potentialfrei
• Switching voltage : min. 5 V | max. 250 V AC / 150 V DC
• Switching current : min. 5 mA | max. 5 A AC / 5 A DC
• Switching capacity : min. 300 mW | max. 100 VA / 50 W
• Weight : ca. 170g
• CE marking : siehe Konformitätserklärung
• Ex-protection/IECEx : siehe Prüfbescheinigung

Compact Ultrasonic Level Sensor

The LU-150 is a short-range integrated ultrasonic level transmitter, intrinsically safe as Ex-version LU-180. This general purpose, 2 wire, 4 to 20 mA loop powered transmitter is ideal for liquids, slurries, and bulk materials in open or closed vessels to 5 m (16.4 ft).

Properties

• Protection class EN60529 : IP 68
• Power supply : 12...30 V DC / 0.1A Spitze
• Power consumption : Max. 0,75 W (25 mA bei 24 V DC)
• Output : 4...20 mA
• Max. Load : 600 Ω bei 24 V DC
• Measuring span : Proportional oder umgekehrt proportional
• Measurable materials : Flüssigkeiten, Schlämme, Schuttgüter
• operating temperature : –20...+60 °C
• Opening angle : 12°
• working pressure : Atmosphärisch
• Display : 3-stelliges LCD
• Process connection : Gewinde G 2" (BSPP) EN 10226 PVDF
• Weight : 1,3 Kg
• Cable entry : Kabelverschraubung M 20 x 1.5
• Material housing electronics : Polybutylenterephthalat PBT
• Material sensor / thread : PVDF-Copolymer

Input

• Measuring range : 0,25...5,0 m
• frequency : 54 kHz

Measuring Accuracy

• Measurement deviation : ± 0,25 % vom Messbereich (in Luft)
• Resolution : 3 mm
• Temperature compensation : im Sensor integriert
• Echo processing : „Sonic Intelligence“ von Siemens