HESS Hydraulic Equipment Systems and Solutions

Гидравлическое Оборудование Системы и Решения

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Hydro-electric piston type pressure switches HED 8 -2X

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Hydro-electric piston type pressure switches HED 8 -2X

  • Component series 2X
  • Maximum operating pressure 630bar
  • Pressure ratings 50, 100, 200, 350 and 630 bar
  • UL recognized component, CCC-certified
  • For subplate mounting/pipeline installation
  • For flange connection according to ISO 16873
  • As vertical stacking element in connection with sandwich plates according to ISO 4401
  • 5 pressure ratings
  • 4 adjustment types:
    – Spindle with/without protective cap
    – Spindle with scale, with/without protective cap
    – Rotary knob with scale
    – Lockable rotary knob with scale
  • Electrical connection
    – with valve plug-in connector design A (large cubic connector)
    – with M12 x 1 connector
  • Micro switch with NC/NO contact function
  • Potential-free switching of currents from 1 mA to 2 A
  • UL approval for pressure ranges up to 350 bar

Weight

m

kg

0.8

Installation position

    any

Ambient temperature ranges (NBR seals)

ϑ

°C

-25 … +50

Ambient temperature ranges (FKM seals)

ϑ

°C

-20 … +50

Ambient temperature range (low-temperature seal)

ϑ

°C

-40 … +50

Sine test

    DIN EN 60068-2-6:1996-05: 10…2000 Hz / max. 10 g / 10 double cycles

Transport shock

    DIN EN 60068-2-27:1995-03: 15 g / 11 ms

Bump test

    DIN EN 60068-2-29:1995-03: 25 g / 6 ms

Noise test

    DIN EN 60068-2-64:1996-05: 20…2000 Hz / 10 g RMS / 30 min

Conformity/certification

CE

    DIN EN 61058-1: 2002 / A2: 2008
DIN EN 60947-1: 2007 / A1: 2011
DIN EN 60947-5-1: 2004 / A1: 2009
DIN EN 60529: 1991 / A2: 2013

UL

    UL, 508 17th edition File No E223220 (up to 350 bar)

CCC

    GB 14048.5-2008

 

The hydro-electric pressure switch type HED 8 is a piston type pressure switch. It basically comprises of housing (1), installation kit with piston (2), compression spring (3), adjustment element (4) and micro switch (5).

If the pressure to be monitored is below the set value, the micro switch (5) is operated. The pressure to be monitored is applied via the nozzle (7) at the piston (2). The piston (2) is supported by the spring plate (6) and acts against the continuously adjustable force of the compression spring (3). The spring plate (6) transmits the movement of the piston (2) onto the micro switch (5) and releases the latter when the set pressure is reached. This switches the electric circuit on or off, depending on the circuit set-up. The mechanical positive stop of the spring plate (6) protects the micro switch (5) in case of a sudden pressure drop from mechanical destruction and, in case of overpressure, prevents solid compression of the compression spring (3).

Notices:

In order to increase the life cycle, the pressure switch should be mounted with low vibrations and protected from hydraulic pressure surges.

Type HED 8 OH-2X/…K14
Type HED 8 OH-2X/…K14S

Type HED 8 OP-2X/…K14A
Type HED 8 OP-2X/…K14AS

Type HED 8 OA-2X/…K14KW
Type HED 8 OA-2X/…K14KS

 

 

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