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Filling

Overfill prevention systems

Overfill prevention system LS for Ex (WHG)

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parts All wet ted less ain st f o e ad m i steel 316 T

Transducer LS 500

Level probe LS 300 EU

Application

To avoid overfilling of stationary tanks and stationary-use tanks. Approved without list of substances for water-polluting liquids, also with flash point < 55 °C.

Level probe for transducers as part of an overfill prevention system for stationary and stationary-use tanks. Suitable for installation in all tank versions. Approved without list of substances for water-polluting liquids, also with flash point < 55 °C.

Description

Transducer with test button. Type-approved together with the level probes LS 300 EU, LS 300 FU or LS 300 ESPU as part of an overfill prevention system. The transducer supplies the level probe via an intrinsically safe circuit, evaluates the change in resistance of the PTC thermistor, continuously checks the PTC thermistor operation and monitors the system (power outage, short circuit, line interruption, etc.). Negative results cause the overfill prevention system to respond. The additional alarm unit ZAG 01 can also be connected.

Approved part of an overfill prevention system according to WHG together with the LS 500 transducer – self-monitoring and with automatic corrosion monitoring. LS 300 EU consists of a height-adjustable probe tube made of stainless steel with a PTC thermistor sensor element at the lower end, a screw fitting and a brass junction box with integrated overvoltage protection. Standard length 500 mm, max. length 3,000 mm. The level probe can be used in liquids up to 3 bar overpressure.

The overfill prevention system must be set up in such a way that visual and audible alarms are triggered when the maximum permissible level is reached. The transducer must be installed outside of the hazardous area.

Material Junction box: Probe tube: Screw fitting: PTC thermistor:

Technical specifications

Supply circuit Supply voltage: AC 230 V Power input: max. 4 VA (Supply voltage: DC 24 V or AC 24 V at extra charge) Output current circuit 1 voltage-free changeover contact Sensor current circuit (intrinsically safe) Voltage: < DC 15.8 V Current: < 154 mA Power: < 600 mW Operating temperature range -25 °C/+50 °C Housing (degree of protection) Wall mounting housing (IP 40) W x H x D: 75 x 150 x 110 mm Approval for construction products DIBt: Z-65.11-228 EC Type Examination Certificate: TÜV 00 ATEX 1641 Ex II (1)G [Ex ia] IIC

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Brass, chrome-plated Stainless steel 316 Ti Stainless steel 316 Ti Stainless steel-encapsulated

Process connection Screw fitting G 3/8 Operating temperature range Medium: -25/+50 °C Degree of protection IP 67 (EN 60529) Approval for construction products DIBt: Z-65.11-228 EC Type Examination Certificate: TÜV 00 ATEX 1656X Ex II 1G Ex ia IIC T4 Ex II 1/2G Ex ia IIC T4

DG: H, PG: 4

Part no.

LS 500

53310

Level probe LS 300 EU, 500 mm

53300

Extra charge per 100 mm (> 500 mm)

Price €

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AFRISO Catalogue Domestic Technology 2019/20  

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