Hydraulic Pressure Gauges (Manometers)

Hydraulic Pressure Gauge for Hydraulic and Industrial Systems

Hydraulic Pressure Gauges

A hydraulic pressure gauge is a critical measurement instrument used to monitor and control pressure in hydraulic, pneumatic, and industrial systems. Accurate pressure measurement helps operators verify system performance, identify abnormal pressure conditions, and protect hydraulic components from excessive pressure.

Hidroman supplies industrial hydraulic pressure gauges in different pressure ranges, dial sizes, connection configurations, and materials for a wide range of hydraulic applications.

Depending on the application, hydraulic pressure gauges are available as analog pressure gauges, glycerin-filled pressure gauges, and digital pressure gauges.

For demanding hydraulic applications, selecting the correct pressure range, connection type, gauge size, and pressure gauge construction is essential for reliable and long-term operation.

Glycerin-Filled Hydraulic Pressure Gauges

Glycerin-filled pressure gauges are commonly used in hydraulic systems where vibration, mechanical shock, pressure pulsation, and dynamic operating conditions can affect gauge performance.

The glycerin filling helps dampen vibration and pressure pulsation, reducing pointer movement and making the pressure reading easier to observe. It also helps protect and lubricate the internal components of the gauge.

For this reason, glycerin-filled hydraulic pressure gauges are widely used on:

• Hydraulic power units
• Hydraulic presses
• Mobile hydraulic equipment
• Construction machinery
• Mining equipment
• Industrial machinery
• Hydraulic test equipment
• Pneumatic systems
• Manufacturing equipment

Glycerin-filled gauges are particularly useful in applications where stable pressure readings are required despite vibration and pulsation.

How Does a Hydraulic Pressure Gauge Work?

Many analog hydraulic pressure gauges use a Bourdon tube as their sensing element.

When hydraulic fluid enters the gauge, the pressure causes the Bourdon tube to deform. This mechanical movement is transferred through the gauge mechanism to the pointer, which indicates the measured pressure on the dial.

The gauge can display pressure using units such as bar and psi, depending on the selected scale.

For industrial applications in the United States, psi is commonly used, while bar is also widely used in international hydraulic equipment.

Analog Hydraulic Pressure Gauges

Analog hydraulic pressure gauges use a mechanical pointer and graduated dial to display system pressure.

They are a practical solution for hydraulic machinery where direct and continuous pressure monitoring is required.

Industrial analog pressure gauges can be manufactured with stainless steel cases and different process connection materials, including brass and stainless steel, depending on the application and required level of corrosion resistance.

For demanding hydraulic environments, stainless steel construction can provide additional durability and resistance to environmental conditions.

Digital Hydraulic Pressure Gauges

Digital hydraulic pressure gauges measure pressure electronically and display the result on a digital screen.

Compared with conventional analog gauges, digital pressure gauges can provide easy-to-read numerical pressure values and may offer additional functions depending on the model.

Depending on the gauge design, digital pressure measurement systems can include features such as:

• Digital pressure display
• High-resolution pressure measurement
• Data recording
• Pressure alarms
• Measurement storage
• Connection to monitoring or control systems

Digital pressure gauges can be used in hydraulic machinery, industrial automation, testing equipment, maintenance applications, and pressure monitoring systems.

Hydraulic Pressure Gauge Pressure Ranges

Hidroman hydraulic pressure gauges are available in a wide range of pressure scales.

Depending on the model, measurement ranges can extend from vacuum/low-pressure applications up to 600 bar, while selected hydraulic pressure gauge configurations can be supplied for applications requiring pressure measurement up to 1000 bar.

The appropriate pressure range should be selected according to the normal operating pressure and maximum pressure of the hydraulic system.

For reliable operation, the gauge should not be continuously operated at the maximum end of its scale.

Hydraulic Pressure Gauge Dial Sizes

Different gauge diameters are available to accommodate various installation requirements and viewing distances.

Available dial sizes include:

• 40 mm
• 50 mm
• 63 mm
• 100 mm
• 160 mm

Larger diameter gauges can provide improved readability when the pressure gauge is installed farther away from the operator.

Compact gauges are suitable where installation space is limited.

Hydraulic Pressure Gauge Connections

Hydraulic pressure gauges can be supplied with different process connection configurations.

Available connection sizes include:

• G1/8" B
• G1/4" B
• G1/2" B

Depending on the gauge size, connections can be configured for different installation requirements.

Side-entry and rear-entry configurations can also be selected depending on the machine design and installation position.

For panel-mounted hydraulic equipment, decorative mounting rings can also be incorporated where required.

Hydraulic Pressure Gauge Specifications

The general-purpose liquid-filled pressure gauge range can include the following specifications:

Compliance: EN 837-1

Gauge Diameter: 40, 50, 63, 100, 160 mm

Pressure Units: bar / psi

Process Connections: G1/8", G1/4", G1/2"

Case / Construction: Stainless steel options available

Liquid Filling: Glycerin

Optional Filling: Silicone oil

Protection Rating: Up to IP67 depending on model

Accuracy Class: Up to Class 1.6 depending on model

Operating Temperature: Approximately -20°C to +60°C depending on application and configuration

Pressure Ranges: Available configurations from vacuum/low pressure up to high-pressure hydraulic applications

The exact pressure range, connection, materials, accuracy class, and filling should be selected according to the hydraulic system and operating conditions.

Hydraulic Pressure Gauge for High-Pressure Applications

High-pressure hydraulic systems require pressure measurement equipment designed for the actual operating conditions of the machine.

Applications involving high working pressure, pressure pulsation, vibration, or hydraulic shock require careful selection of the pressure gauge.

For high-pressure hydraulic applications, Hidroman can provide pressure gauge configurations based on:

• Maximum working pressure
• Required pressure range
• Gauge diameter
• Connection type
• Installation position
• Hydraulic fluid
• Temperature
• Vibration level
• Required accuracy
• Analog or digital measurement

For applications requiring pressure measurement up to 1000 bar, the gauge should be selected according to the actual working and test pressure of the system.

How to Select the Right Hydraulic Pressure Gauge

Choosing the correct hydraulic pressure gauge is important for accurate measurement and reliable system operation.

Before selecting a gauge, consider the following:

1. Operating Pressure

Determine the normal working pressure of the hydraulic system and select an appropriate gauge range.

2. Maximum Pressure

Consider pressure spikes, hydraulic shock, and maximum system pressure.

3. Gauge Diameter

Select the gauge diameter according to the available installation space and required viewing distance.

4. Connection Type

Check the required thread size and connection orientation before ordering.

5. Vibration and Pulsation

For machines with significant vibration or pressure pulsation, a glycerin-filled pressure gauge can provide a more stable reading.

6. Environment

Temperature, humidity, corrosion, and mechanical conditions should be considered when selecting the gauge construction and materials.

7. Measurement Accuracy

For general hydraulic applications, standard accuracy may be sufficient. Testing, calibration, and precision applications may require a higher accuracy class.

Hydraulic Pressure Gauge Applications

Hydraulic pressure gauges are used across many industries and hydraulic applications, including:

• Hydraulic power units
• Hydraulic cylinders
• Hydraulic presses
• Construction machinery
• Mining equipment
• Industrial machinery
• Agricultural machinery
• Mobile hydraulics
• Hydraulic test benches
• Hydraulic maintenance equipment
• Pneumatic systems
• Manufacturing equipment

A correctly selected hydraulic pressure gauge provides operators and maintenance teams with direct information about system pressure and helps support preventive maintenance.

Hydraulic Pressure Gauge Supplier

Hidroman provides hydraulic components and engineered hydraulic solutions for industrial and mobile hydraulic applications.

Our hydraulic pressure gauge solutions can be configured according to pressure range, gauge diameter, connection type, installation requirements, and application conditions.

If you need a hydraulic pressure gauge, glycerin-filled pressure gauge, industrial pressure gauge, digital pressure gauge, or a high-pressure gauge up to 1000 bar, contact Hidroman with your required pressure range, connection size, and application details.

We can help you select the appropriate hydraulic pressure measurement solution for your equipment.

Request a Hydraulic Pressure Gauge

Send us your required:

• Working pressure
• Maximum pressure
• Pressure range
• Gauge diameter
• Connection type
• Hydraulic fluid
• Operating temperature
• Application details

Hidroman can provide a suitable hydraulic pressure gauge solution for your hydraulic system.

Hidroman – Hydraulic Engineering and Industrial Hydraulic Solutions