ELEKTROGAS – Scheda tecnica EE141 - 07/12 Description The PSG 901 is an adjustable pressure switch for monitoring overpressure of gaseous media. Features The pressure switch has a knob for adjusting the switching pressure (Fig. 1) selectable within a predefined range. It is suitable for monitoring overpressure of air and non-aggressive gases (families 1-2-3 EN437). Special versions are available for use with aggressive gases. The compact, robust and functional design permits a simple, quick, and essentially maintenance free installation. A special filter (20µm) protect the sensing element from...

ELEKTROGAS – Scheda tecnica EE141 - 07/12 Functioning and application The PSG pressure switch is designed for the monitoring of operating overpressures on air and gas line. When the pressure exceeds the set value, the electrical contact switches. When pressure decrease, the contact switches again (Fig. 2). The pressure switch has a threaded connection G¼ that allows installation on the gas line or directly on components of the Elektrogas range with pressure test point. Fig. 3 shows an example of a typical installation. Manometer Pressure Switch PSG Consumer Ball valve Gas filter FG/FGS Pressure...

ELEKTROGAS – Scheda tecnica EE141 - 07/12 Technical specifications Tab. 1 Connection Environmental temperature Diaphragm material NBR Viton® (special version for aggressive gases) On horizontal and vertical piping Air and non aggressive gases (fam. 1-2-3 EN437) Special versions for aggressive gases Electrical loads AgNi contacts Gold-plated contacts Electrical connection Quick-connect terminals ISO16 cable gland ISO4400 plug with PG11 cable gland Materials in contact with media Brass PE UHMW (filter) Plated steel Nitrile rubber (NBR) Stainless steel (aggressive gases version) FPM (aggressive...

ELEKTROGAS – Scheda tecnica EE141 - 07/12 Ordering information The pressure switch is available in different versions, all with threaded connection G ¼. It is possible to choose the pressure range depending on the Tab. 2 and 3. Versions for aggressive gases should be specified when ordering. Tab.2 Type PSG Maximum pressure [mbar] Differential pressure [mbar] Pressure range [mbar] Contacts [none] 230 VAC - 24VDC 2A AgNi .C 24V AC/DC Gold plated air and non aggressive gases bio and coke gas Standards and approvals Pressure switches are designed and built by Beck GmbH for Elektrogas. These products...

ELEKTROGAS – Scheda tecnica EE141 - 07/12 Installation, wiring and adjustment WARNING Shut off the gas and disconnect the power before attempting any work on the system INSTALLATION (qualified personnel only) Check the integrity of the pressure switch before fitting. It may be unsafe, if externally damaged. Choose an area protected from rain and splashing or dripping water. Mount the pressure switch on a suitable pipe, using the necessary seals (vertical position is preferable). Avoid excessive tightening (< 15Nm) and use a suitable key. WARNING Perform a leak test WARNING Danger of death! Verify...