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Pressostat PK 944/947

Product catalog summary

Overview
Trafag is a Swiss-based international supplier of high-quality sensors and monitoring instruments for pressure and temperature measurement. This document provides technical specifications for the PK 944/947 pressostat series, suitable for applications in shipbuilding, engine manufacturing, railways, machine tools, and hydraulics.

Features

Rugged aluminium housing
Protection class IP65
Flexible mounting positions

Technical Specifications

Measuring Principle: Piston
Repeatability: ± 1.0% FS typical
Measuring Range: 1 to 600 bar
Media Temperature: O-ring NBR: -30°C to +100°C, O-ring FKM: -15°C to +150°C
Output Signal: 1 Floating change-over contact (SPDT)
Ambient Temperature: -20°C to +70°C
Approvals: ABS, BV, CCS, DNV-GL, KRS, LRS, RINA, EN60730-1/EN60730-2-6: typ 2.B.H

Ordering Information

Custom build codes available with or without display and adjusting screw
Microswitch options for different switching differentials and vibration resistances

Pressure Ranges and Overpressure/Burst Pressure

Ranges from 1-10 bar to 60-600 bar with corresponding overpressure and burst pressure limits

Materials and Connections

Sensor Material: 1.4435
Housing Material: AlSi10Mg/epoxy coated
Thread Options: G1/4” female, G1/2” male

Environmental and Mechanical Data

Protection: IP65
Humidity: Max. 95% relative
Vibration and Shock Resistance: Specified for different microswitch types
Mounting Torque: Max. 25 Nm
Installation: Any position
Weight: ~710 g

Electrical Data

Microswitch Ratings: Detailed for resistive and inductive loads
Electrical Connections: Terminal screw, cable gland M20x1.5

Additional Information

Documents and instructions available online

Catalog excerpts

PRESSOSTAT Swiss based Trafag is a leading international supplier of high quality sensors and monitoring instruments for measurement of pressure and temperature. ■ shipbuilding ■ rugged aluminium housing ■ engine manufacturing ■ Protection IP65 ■ railways ■ any mounting position possible ■ Machine tools ■ Hydraulics subject to change Data sheet H72259s 05/2019 Trafag sensors & controls Switzerland trcifciqsensors controls

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PK 944/947 Ordering information/type code XXX XX XX XXX XX XX Custom build code With display and adjusting screw Without display, with adjusting screw Small switching differential, standard vibration resistance 1) 2) Average switching differential, standard vibration resistance 1) Average switching differential, increased vibration resistance s 1) Large switching differential, high vibration resistance s 1) With gold plated contacts, standard vibration resistance 1) Sensor material 1.4435, O-Ring NBR 1.4435, O-ring FKM 1.4435, O-ring NBR 1.4435, O-ring FKM 1.4435, O-Ring NBR 1.4435, O-Ring FKM...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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