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Trafag AG sensors & controls
Pressostat P/PS 900/904/912

Pressostat P/PS 900/904/912

Product catalog summary

Overview: Trafag is a Swiss-based international supplier of high-quality sensors and monitoring instruments for pressure and temperature measurement. The document provides detailed specifications for the P/PS 900/904/912 series of pressostats, which are used in various industries such as shipbuilding, engine manufacturing, railways, machine tools, and hydraulics.

Features: The pressostats feature a rugged aluminum housing with IP65 protection and can be mounted in any position. They are designed to operate in harsh environments with media temperatures ranging from -40°C to +150°C and ambient temperatures from -25°C to +70°C.

Technical Specifications: The measuring principle is based on a bellow with a repeatability of ±1.0% FS. The measuring range varies from -0.9 to 100 bar (5 to 1500 psi). The output signal is a floating change-over contact (SPDT), and the switching differential is not adjustable. The devices conform to various international standards and approvals, including ABS, BV, CCS, DNV-GL, KRS, LRS, RINA, and EN60730-1/EN60730-2-6.

Ordering Information: The type code provides options for customization, including display features, microswitch types, and sensor materials. The document lists various configurations with different pressure ranges, overpressure, and burst pressure ratings.

Mechanical and Electrical Data: The housing is made of AlSi10Mg with epoxy coating, and the sealing is NBR with EPDM 75 SH housing seal. The devices have a maximum mounting torque of 25 Nm and can be installed in any position. The electrical connection is via screw terminals with a cable gland M20x1.5, suitable for cable diameters of 6 to 13 mm.

Performance and Durability: The microswitches have different ratings and life cycles, with some models capable of up to 20 million mechanical cycles. The devices are designed to withstand vibrations and shocks, with specific models offering increased vibration resistance.

Additional Information: The document includes references to additional resources such as data sheets, instructions, and flyers available on the Trafag website.

Catalog excerpts

Swiss based Trafag is a leading international supplier of high quality sensors and monitoring instruments for measurement of pressure and temperature. Applications ■ shipbuilding ■ engine manufacturing ■ railways ■ Machine tools ■ Hydraulics Features ■ rugged aluminium housing ■ Protection IP65 ■ any mounting position possible subject to change Data sheet H72252t 05/2019 Trafag sensors & controls Switzerland trcifciqsensors controls

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P/PS 900/904/912 XXX Custom With display and adjusting screw 900 build code Without display, with adjusting screw 904 With display and adjusting knob 912 Sensor material Sensor material H72252t page 2/6 trofaq sensors ^^controls

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Dimension X and Y see data sheet H72271

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Switching differential (not adjustable) Microswitch 11/21/23 [bar] 0.1 0.2 0.4 1.0 3.0 switching differential (not adjustable) Microswitch 26 [bar] 0.1 0.3 0.8 2.0 5.0 switching differential (not adjustable) Measuring range of bellows sensor [psi] 5 ... 50 10 ... 100 50 ... 500 125 ... 1500 switching differential (not adjustable) Microswitch 11/21/23 [psi] 3 6 14.5 44 switching differential (not adjustable) Microswitch 26 [psi] 4.4 12 30 72.5 switching differential (not adjustable) trofaq sensors ^^controls

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