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Instruction PK 944/947

Instruction PK 944/947

Product catalog summary

Pressure Switch Technical Document Summary

Specifications:
- Operating pressure ranges from 0.03 to 100 bar, with maximum overpressure limits varying from 2 to 100 bar depending on the model.
- Operating temperature ranges from -25°C to +70°C, with specific types allowing for temperatures from -40°C to +150°C.
- Media temperature is specified at -25°C to +85°C.
- Storage temperature is between -25°C and +85°C.
- IP Protection rating is IP65.

Electrical Connection:
- The micro switch can function as a cut-in, cut-out, or change-over switch.
- Terminals 2-1 open with rising pressure, while terminals 1-4 close with rising pressure.

Setpoint Adjustment:
- Dial accuracy is ±2% of the range, and each unit is individually calibrated.
- For types with invariable differential: Loosen lock screw (A), adjust upper switching point with range spindle (B), and tighten lock screw (A).
- For types with variable differential: Loosen lock screw (C), adjust lower switching point with range spindle (D), tighten lock screw (C), and adjust upper switching point with a screwdriver at differential adjusting screw (E).

Installation:
- Avoid holding the housing of the pressure switch while tightening the pressure connection to prevent altering the sensing element adjustments.

Additional Information:
- The document includes various pressure ranges and types, with specific torque moments for pressure connections and dimensions for installation.

Catalog excerpts

Druckschalter Pressostat Pressure Switch Betriebsanleitung Mode d‘emploi Instructions Elektrischer Anschluss / Connexion électrique / Electrical connection Mikroschalter als Ein-, Aus- oder Umschalter anschliessbar Klemmen 2 - 1: Bei Druckanstieg Kontakt öffnend Klemmen 1 - 4: Bei Druckanstieg Kontakt schliessend Le micro switch est utilisable comme enclencheur, déclencheur ou commutateur Bornes 2 - 1: Déclenchant avec pression montante Bornes 1 - 4: Enclenchant avec pression montante It is possible to connect the micro switch as a cut-in, cut-out or change-over switch. Terminals 2 - 1: Opening at rise of pressure Terminals 1 - 4: Closing at rise of pressure IP-Schutzart / IP-Protection / IP-Protection IP65 Anziehdrehmoment Druckanschluss / Couple de serrage raccord de pression / Torque moment pressure connection max. 25Nm Betriebstemperatur / Température de service / Operating temperature -25°C ... +70°C (-13°F ... +158°F) Medientemperatur / Température du fluide / Media temperature -40°C ... +150°C (-40°F ... +300°F) for Types: Lagertemperatur / Température de stockage / Storage temperature -25°C ... +85°C (-13°F ... +185°F) Betriebsdruck / Pression de fonctionnement / Operating pressure Type: 900.../901.../902.../904.../905.../906.../912.../915 903.../907.../940.../941.../942... bar bar Bereich Plage Range [bar] Trafag AG Industriestrasse 11 CH-8608 Bubikon Bereich Plage Range [bar]

Open the catalog to page 1

Massbilder / Cotes d‘encombrement / Dimensions 2x Einstellen des Schaltpunktes / Ajustage de seuil / Setpoint adjustment Ausführung mit verstellbarer Schaltdifferenz 1. Lösen der Arretierschraube (C) 2. Einstellen des unteren Schaltpunktes mit der Bereichsspindel (D) 3. Festziehen der Arretierschraube (C) 4. Einstellen des oberen Schaltpunktes mittels Schraubenzieher an der Differenzverstellschraube (E) Exécution avec différentiel réglable 1. Desserrer le dispositif d’arrêt (C) 2. Régler la valeur de pression inférieure (point d’enclenchement) avec la tige filetée (D) 3. Serrer le dispositif...

Open the catalog to page 2

Instruction PK 944/947

Instruction PK 944/947

Catalog excerpts

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