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Hydropa
DS-4*7/4*2

DS-47/42

Product catalog summary

Overview: The document provides technical specifications and guidelines for the DS-4*7/4*2 pressure switches, designed for high-security applications with dual micro-switches to minimize faults.

Specifications:

Design: Spring-loaded piston with interchangeable dimensions to DS-307/302.
Electrical Connection: Appliance inlet according to DIN 43650 (PG 9), with protection class IP 65.
Switching Capacity: Supports both AC and DC currents, with specific resistive, bulb, and inductive load capacities.
Materials: Housing made of aluminum, standard body of brass, with micro-switch contacts in gold and silver.

Hydraulic Data:

Switching Pressure Range: Varies from 5-350 bar depending on the model.
Switching Accuracy: Variations of less than 1%.
Fluid Compatibility: Suitable for oil and oil-in-water emulsions.

Electric Data:

Switch Type: Electro-mechanical double-throw switch, available in double NCC or double NOC configurations.
Current and Voltage: Maximum conduction capacity of 0.12 VA, with current up to 400 mA and voltage up to 30 V.

Features:

Mounting Options: Available in flange mounting, panel mounting, and with integrated subplate options.
Safety: Includes a locking screw for safety and a knurled knob for adjustment.

Applications: Ideal for use in aircraft plants and lifting platforms due to its high security and reliability.

Installation Notes:

Installation should be performed by technical specialists.
Comply with national and international regulations for electro-technical equipment installation.
Ensure the equipment is not energized before connection.

Additional Information: The document emphasizes the importance of avoiding vibrations, oscillations, and high switching currents to extend the service life of the equipment.

Catalog excerpts

Pressure Switches nyaropa®- HYDROSTAR

Open the catalog to page 1

The Pressure Switch for Safety Switching • Reduction of faults, caused by Micro-Switches, to a minimum. Statistically up to 106 switching cycles without faulty switching. • Fully interchangeable to DS-307/302. - Same dimensions. • Electrical lifetime considerably increased. a) different contact design b) different contact material. Preferred application: air craft plants, lifting platforms Electrical Connection Switching symbols without pressure Function pressure increase Function pressure increase Function pressure decrease Function pressure decrease

Open the catalog to page 2

Pressure Switch, Characteristics DS-4*7 Switching capacity lectrical Connection Standard Contact: Micro-Switch 1 = gold in silver Standard value of permissable load of gold surface of standard Conduction capacity should not be higher than 0,12 VA function pressure increase function pressure increase function pressure decrease function pressure decrease Switching symbols without pressure

Open the catalog to page 3

Additionals notes F/P = Pressure Switch with integrated V2 = scale and knurled knob PO = lead seal (not for version with scale) SS** = special sealing (low function) only for following pressure ranges: Viton® is a registered trademark of DuPont Performance Elastomers. The unit may only be installed by technical specialists. Comply with the national and international regulations for the installation of electro-technical equipment. Voltage supply in compliance with EN 50178, SELV, PELV. Ensure that the equipment is not energized before connecting the unit. In order to retain service-life over a...

Open the catalog to page 4

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