All SS measuring system, Socket-case direct welded, Dry/liquid filled
Solid front with full blowback, Dry/liquid filled, Lightweight, Stabilized accuracy
All SS measuring systems, External Zero adjustment, Electric contact version, Dry/liquid filled
All SS measuring systems, Static pressure 40 bar max., External Zero adjustment, Electric contact version, Suitable for direct valve mounting
Compact design, Migrated pressure chambers, Static pressure up to 200 bar
Diaphragm operated, Compact design, Isolated pressure chambers, Static pressure up to 100 bar
All SS measuring system, Socket-case direct welded, Liquid filled versions
A trusted industrial pressure instruments manufacturer and supplier provides the complete range of pressure measurement and control devices that keep process plants running safely, efficiently, and within design limits. From simple mechanical gauges to advanced smart transmitters, pressure instruments are fundamental to every industrial process, protecting equipment, ensuring product quality, and enabling precise automation.
Industrial pressure instruments are devices that measure, indicate, transmit, or control the pressure of liquids, gases, and steam inside process pipelines, vessels, and equipment. They form a critical part of any plant’s instrumentation system — providing the pressure data needed for safe operation, process control, and regulatory compliance.
Accurate pressure measurement directly impacts:
A pressure gauge is a mechanical instrument that provides a direct, local visual indication of process pressure. The most common type uses a Bourdon tube that flexes under pressure, moving a pointer across a graduated dial. Simple, reliable, and requiring no power supply, pressure gauges are the most widely used pressure instruments in industry.
Key features:
A pressure switch is an instrument that outputs an ON/OFF electrical signal when process pressure reaches a preset high or low set point. It protects equipment, triggers alarms, and automates process control without requiring a continuous signal or control system input.
Key features:
A pressure transmitter continuously measures process pressure and transmits a proportional 4-20 mA, HART, Modbus, or digital fieldbus signal to a PLC, DCS, or SCADA system. It is the preferred instrument wherever remote monitoring, continuous control, or integration with an automation system is required.
Key features:
A diaphragm seal, also known as a chemical seal or remote seal, isolates a pressure instrument from direct contact with aggressive, viscous, toxic, or high-temperature process media. A thin flexible diaphragm separates the process fluid from the instrument, with a fill fluid transmitting the pressure to the gauge, switch, or transmitter.
Key features:
Oil & Gas: Wellhead pressure monitoring, pipeline pressure control, separator vessel instrumentation, compressor protection, and custody transfer metering systems.
Chemical & Petrochemical: Reactor pressure control, distillation column instrumentation, storage tank pressure monitoring, and aggressive media measurement using diaphragm seals.
Water & Wastewater: Pump discharge pressure monitoring, filter differential pressure measurement, pipeline pressure management, and dosing system pressure control.
Power Generation: Boiler steam pressure measurement, turbine inlet monitoring, condenser pressure control, and feedwater system instrumentation.
Pharmaceuticals: Sterile process pressure measurement, autoclave monitoring, hygienic pressure transmitters, and CIP/SIP system pressure control.
Food & Beverage: Hygienic pressure gauges and transmitters for filling lines, pasteurizers, homogenizers, and CIP systems.
Refineries: Column pressure control, heat exchanger differential pressure, fired heater instrumentation, and compressor surge control.
HVAC & Utilities: Compressed air system monitoring, chilled water pressure management, cooling tower instrumentation, and building services pressure control.
Q: What is the difference between a pressure gauge and a pressure transmitter?
A: A pressure gauge provides local visual indication only; an operator must be physically present to read it. A pressure transmitter converts the pressure measurement into an electrical signal transmitted to a remote control system, enabling automated control, data logging, and remote monitoring.
Q: When should I use a diaphragm seal with a pressure instrument?
A: Use a diaphragm seal when the process fluid is corrosive, toxic, viscous, crystallizing, or at extreme temperatures that would damage or clog the instrument directly. The seal isolates the instrument completely while accurately transmitting pressure via a hydraulic fill fluid.
Q: What is the difference between a pressure switch and a pressure transmitter?
A: A pressure switch outputs a simple ON/OFF signal when pressure reaches a set point — used for alarms and equipment protection. A pressure transmitter provides a continuous proportional signal representing the exact pressure at all times — used for process control and monitoring.
Q: What fluid should I use in a diaphragm seal?
A: Fill fluid selection depends on process temperature and application. Glycerine is standard for most applications. Silicone oil suits low-temperature and wide-temperature-range service. Food-grade oil is required for hygienic applications. High-temperature oil is used for steam and elevated temperature processes.
Q: What does SIL 2 mean for a pressure transmitter?
A: SIL 2 certification means the transmitter has been independently verified to perform a defined safety function with a probability of dangerous failure on demand between 1% and 0.1%. SIL-rated pressure transmitters are required in Safety Instrumented Systems for overpressure protection in oil, gas, and chemical plants.
Q: How do I select the right pressure gauge for my application?
A: Key selection factors include process pressure range, fluid type, process temperature, connection size and standard, dial size for readability, and whether vibration or pulsation dampening is needed. For aggressive or hygienic media, wetted material selection is critical.
Q: Can pressure transmitters be used in hazardous areas?
A: Yes. ATEX and IECEx certified pressure transmitters are specifically designed for use in explosive atmospheres, including Zone 0 (continuous explosive atmosphere), Zone 1, and Zone 2 installations. Always confirm the area classification and select the appropriate certification category.
