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Trafag AG sensors & controls
Instruction PD 920/924/932

Instruction PD 920/924/932

Product catalog summary

Specifications:
The differential pressure switch PD operates within a pressure range of -1 to +18 bar, with an overpressure limit of 12 to 24 bar depending on the model. The operating temperature ranges from -40°C to +150°C, while the storage temperature is between -25°C and +85°C. The device is protected with an IP65 rating.

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

Pressure Connection:
Standard connection is R 1/8" female. High pressure is marked with "+" and low pressure with "-". Maximum pressure should not exceed 80% of the maximum pressure indicated on the dial.

Switchpoint Adjustment:
The dial accuracy is ±2% of the range. Each unit is individually calibrated, eliminating the need for a manometer. To adjust, loosen the lock screw (A), adjust the upper switching point with the range spindle (B), and then tighten the lock screw (A).

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

Dimensions:
Various connection sizes are provided, including G1/2” male, G1/8” female, and G1/4” female, with specific dimensions for different models.

Catalog excerpts

^T^Pl^^^^l^ Betriebsanleitung Mode d'emploi sensors^jKontrols Instructions DIFFERENTIAL PRESSURE PRESSOSTAT PD Elektrischer Anschluss / Connexion electrique / Electrical connection Mikroschalter als Ein-, Aus- oder Umschalter Le micro switch est utilisable comme enclencheur, It is possible to connect the micro switch as a anschliessbar declencheur ou commutateur cut-in, cut-out or change-over switch. Bei Druckanstieg Kontakt offnend Declenchant avec pression montante Opening at rise of pressure Bei Druckanstieg Kontakt schliessend Enclenchant avec pression montante Closing at rise of pressure IP-Schutzart / IP-Protection / IP-Protection Anziehdrehmoment Druckanschluss / Couple de serrage raccord de pression / Torque moment pressure connection Betriebstemperatur / Temperature de service / Operating temperature Medientemperatur / Temperature du fluide / Media temperature Lagertemperatur / Temperature de stockage / Storage temperature Betriebsdruck / Pression de fonctionnement / Operating pressure Druckanschluss / Raccord de la pression / Pressure connection Standardanschluss R 1/8" Innengewinde Raccord standard: R 1/8" femelle Standard connection: R 1/8" female Hochdruckanschlussmit+, Niederdruckanschluss Raccord pour la pression superieure marquee High pressure connection marked + mit-bezeichnet. Max. Hochdruck = 80%desMa- +, raccord pour la pression inferieure marque -. Low pressure connection marked -. ximaldruckes,welcheraufderSkalaangegebenist. Pression maximale admissible 80% de la valeur Max. pressure = 80% of max. pressure marked max. indiquee sur I'echelle. on dial.

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Massbilder / Cotes d’encombrement / Dimensions G1/4” innen femelle female G1/8” innen femelle female G1/2” aussen mâle male Die Skalengenauigkeit beträgt ±2% des Bereiches. Das Gerät ist individuell geeicht, so dass sich eine Manometer-Kontrolle erübrigt. La précision de l’échelle est garantie avec ±2% de la plage. Chaque pressostat est étalloné individuellement. L’emploi d’un manomètre n’est pas nécessaire. The dial accuracy is ±2% of the range. Every unit is individually calibrated, so a manometer verifification is not necessary. 1. Lösen der Arretierschraube (A) 2. Einstellen des oberen Schaltpunktes...

Open the catalog to page 2

Instruction PD 920/924/932

Instruction PD 920/924/932

Catalog excerpts

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