Trafag PST4B 9B4 Picostat Pressure Switch

Trafag PST4B 9B4 Picostat Pressure Switch stands as a benchmark in precision engineering, specifically designed to provide high-accuracy monitoring in demanding industrial environments. Leveraging a robust bellows sensing element and a compact, vibration-resistant design, this Picostat ensures rapid response times and long-term stability for critical system control. Whether integrated into hydraulic systems or general mechanical engineering applications, the PST4B 9B4 delivers the reliable pressure management essential for maintaining operational safety and efficiency.

Trafag’s electromechanical pressure switches, also known as pressostats, can be operated maintenance-free for decades, even under harsh conditions. Various versions with bellows, diaphragm, and piston sensors cover a wide range of pressure ranges, media, and load profiles for the most diverse applications.

Technical data of Trafag PST4B 9B4 Picostat Pressure Switch

Product code	9B4
Name	PST4B
Designation	Picostat Pressure switch
Product category	Mechanical pressure switches
Measuring range	-0.6 … 3.4 to 4 … 40 bar -8 … 45 to 60 … 500 psi
Measuring principle	Bellow
Applications	Engine manufacturing Machine tools Railways Shipbuilding
Approval/conformity	ABS, BV, CCS, DNV-GL, KRS, LR, NKK, RINA, RMRS EN60730-1/ EN60730-2-6: Type 2.B.H
Repeatability	± 0.5 % FS typ.
Output signal	1 Floating change-over contact (SPDT)
Electrical connections	EN175301-803-A (DIN43650-A)
Pressure connections	G1/8″ f, G1/4″ f, M10x1.0 f, G1/4″ m
Media temperature	Standard: –25°C … +125°C with sensor 789/790/791: –40°C … +125°C
Ambient temperature	Standard: –25°C … +85°C with sensor 789/790/791: –40°C … +85°C

Main Features

Improved vibration resistance
Compact design
Rugged housing
Protection IP65
Any mounting position is possible

Applications

The Energy Sectorused: in boilers, energy combustion systems, and power production to monitor and regulate pressure.
The Chemical and Pharmaceutical Sector: to regulate pressure in systems used in chemical and pharmaceutical processes that need precise and consistent pressure management.
HVAC stands for ventilation, air conditioning, and heating.: ensuring precise measurement and regulation of pressure in heating, cooling, and ventilation systems.
Sewage and Water Treatment: used to keep an eye on pump and related installation pressure in water treatment and filtration systems.
Manufacturing and the Automobile Sector: can be used to test and regulate the pressure in heavy machinery or automobile hydraulic and pneumatic systems.
The Oil and Gas Sector: To maintain system efficiency and integrity, oil or gas pipeline and system pressure should be monitored.

Source: trafag.com