Capacitive Vacuum Pressure Gauge 0 to 10 Torr

The JW-VM01(JY11) Capacitive Vacuum Pressure Gauge is designed for accurate low-vacuum pressure measurement in industrial process equipment and scientific vacuum systems.

Based on a metal capacitive sensing principle, the gauge converts diaphragm deformation caused by pressure changes into a stable electrical output. Multiple full-scale ranges are available from 0–1 Torr to 0–1000 Torr, while the 0–10 Torr configuration is suitable for applications requiring precise monitoring and control of low vacuum pressure.

With a nickel alloy sensing diaphragm, 304 stainless steel housing, standard voltage output and a response time of ≤20 ms, the sensor can be integrated into vacuum equipment, controllers and data acquisition systems. It is part of JW-IoT’s broader Industrial Automatic Sensors portfolio for pressure, level, flow and process monitoring.

What Is a Capacitive Vacuum Pressure Gauge?

A capacitive vacuum pressure gauge measures pressure by detecting the movement of a flexible diaphragm.

Inside the JW-VM01(JY11), a nickel alloy diaphragm is positioned between electrode structures. When the pressure applied to the diaphragm changes, the diaphragm deforms and the distance between the diaphragm and the electrode changes.

This produces a corresponding change in capacitance.

The internal electronics then perform signal conditioning, amplification, linearization and anti-interference processing before converting the measurement into a standard voltage output.

This measurement principle is widely used for applications where stable and repeatable low-pressure measurement is required.

JW-VM01(JY11) Capacitive Vacuum Gauge Working Principle

The measurement process can be summarized in four steps:

1. Pressure Acts on the Diaphragm

Process gas enters through the vacuum connection and applies pressure to the nickel alloy sensing diaphragm.

2. Diaphragm Position Changes

As the pressure changes, the diaphragm deforms accordingly.

3. Capacitance Changes

The displacement changes the distance between the diaphragm and electrode, producing a measurable change in capacitance.

4. Electrical Signal Is Generated

The internal electronics condition and linearize the signal and convert it into a standard 0–10 VDC or 0–5 VDC output.

The resulting voltage signal can then be used by a controller, data acquisition system or other compatible process monitoring equipment.

Technical Specifications

Typical 0–10 Torr Configuration

For applications requiring a 0 to 10 Torr capacitive vacuum gauge, a typical JW-VM01 configuration is:

The exact configuration should be confirmed according to the required measurement range, output and mechanical connection before ordering.

Why Use a 0–10 Torr Capacitive Vacuum Gauge?

Vacuum systems often require more than simply detecting whether vacuum is present.

In process equipment, the pressure level may need to be continuously measured so that operators or controllers can monitor how the chamber behaves during evacuation, gas introduction or process operation.

A 0–10 Torr vacuum pressure gauge provides a defined full-scale measurement range for these low-pressure applications.

The JW-VM01 converts the measured pressure into a continuous voltage signal, allowing the pressure information to be used by downstream monitoring or control equipment.

Typical applications include:

• Process chamber vacuum monitoring
• Vacuum equipment control
• Low-pressure gas process monitoring
• Vacuum coating systems
• Laboratory vacuum equipment
• Plasma processing systems

Semiconductor Process Chamber Monitoring

Semiconductor manufacturing and related vacuum processes use controlled chamber environments during different stages of production.

The JW-VM01 capacitive vacuum gauge can be used as a pressure sensing component in compatible process chambers where the required vacuum range falls within the available sensor configurations.

Available full-scale ranges include:

• 1 Torr
• 10 Torr
• 100 Torr
• 1000 Torr

This allows the gauge range to be selected according to the required process pressure.

The 0–10 Torr version is particularly relevant where a dedicated low-pressure measurement range is required.

PECVD Vacuum Pressure Measurement

PECVD—plasma-enhanced chemical vapor deposition—uses controlled process conditions inside a vacuum chamber.For general background on vacuum pressure measurement and calibration, engineers can also refer to the NIST Pressure and Vacuum Metrology resources.

Pressure is one of the parameters that may need to be measured during system operation.

The JW-VM01 provides a continuous voltage output representing the measured vacuum pressure, allowing it to be connected to compatible control or data acquisition equipment.

When selecting a gauge for PECVD equipment, engineers should confirm:

• Required full-scale pressure range
• Required measurement accuracy
• Process gas compatibility
• Process connection
• Electrical connector
• Required output voltage

Gas compatibility must be evaluated against the nickel alloy diaphragm material before use.

Vacuum Coating Equipment

Vacuum coating equipment requires pressure monitoring during chamber evacuation and process operation.

A capacitive vacuum pressure gauge can be used as part of the pressure monitoring system where its measuring range and material compatibility meet the application requirements.

For the JW-VM01, available ranges extend from 0–1 Torr to 0–1000 Torr, providing different options for vacuum equipment manufacturers and system integrators.

Its standard voltage output makes it suitable for connection to compatible monitoring and control electronics.

Plasma Sterilization Equipment

Vacuum conditions are also used in some plasma sterilization equipment.

The JW-VM01 can provide continuous pressure measurement for compatible vacuum sections of such systems.

Its ≤20 ms response time allows pressure changes to be reflected quickly in the output signal.

However, users should select the gauge according to the actual operating pressure range and confirm that the process gas is compatible with the nickel alloy sensing diaphragm.

Laboratory Vacuum Systems

Research laboratories and test systems may require continuous pressure measurement for vacuum chambers, experimental equipment or process development platforms.

The compact electrical output architecture of the JW-VM01 allows it to act as a pressure sensing element within a larger measurement system.

Depending on the application, engineers can select among:

• 0–1 Torr
• 0–10 Torr
• 0–100 Torr
• 0–1000 Torr

The selected full-scale range should match the expected working pressure as closely as practical.

Industrial Vacuum Process Control

Industrial vacuum systems often combine several components, such as:

Vacuum chamber → vacuum pump → pressure sensor → controller → process equipment

Within this architecture, the JW-VM01 provides the pressure measurement signal. For projects requiring sensors to be integrated into a wider factory monitoring architecture, explore JW-IoT’s Industrial IoT Monitoring solutions.

Its 0–10 V or 0–5 V voltage output can be connected to compatible controllers or data acquisition hardware.

The sensor itself measures pressure; any automatic control logic, alarm functions or remote communication depend on the external controller or monitoring system used with the gauge.

Choosing the Correct Measuring Range

Correct range selection is important when specifying a capacitive vacuum gauge.

The JW-VM01 is available with four listed ranges:

0–1 Torr

For applications where the required measurement is concentrated within a lower full-scale pressure range.

0–10 Torr

A key configuration for low-vacuum process monitoring and the primary configuration represented on this product page.

0–100 Torr

For processes operating over a broader pressure range.

0–1000 Torr

For applications requiring measurement across a substantially higher full-scale pressure range.

Selecting the correct range should be based on the expected process pressure rather than automatically choosing the widest possible range.

Output Signal Options

The JW-VM01 supports two standard voltage output options:

• 0–10 VDC
• 0–5 VDC

Before ordering, users should check which analog input range is supported by their controller or acquisition system.

The output load requirement is:

>10 kΩ

The sensor supply voltage is:

15–30 VDC

Current consumption is:

≤10 mA

These specifications should be considered when designing the power and signal interface.

Material Compatibility

The sensor housing is manufactured from 304 stainless steel, while the pressure-sensitive diaphragm is made from a nickel alloy.

According to the current product specification, the measuring medium should be:

Gas compatible with nickel alloy.

This point is important for vacuum systems using special process gases.

The gauge should therefore not be selected only according to pressure range. The compatibility between the actual process medium and the wetted sensing material should also be confirmed before installation.

For corrosive or special gases, provide the gas composition or application information to JW-IoT before final model selection.

Temperature Considerations

The specified temperature parameters are:

• Compensation temperature: 0–50°C
• Media temperature: -20–80°C
• Storage temperature: -40–85°C
• Temperature drift: ≤0.04%FS/°C

For precision measurement applications, operating temperature should therefore be considered as part of the overall system design.

Typical System Integration

A typical integration can include:

Vacuum Chamber
↓
JW-VM01 Capacitive Vacuum Pressure Gauge
↓
0–10 V / 0–5 V Analog Signal
↓
Controller or Data Acquisition System
↓
Process Monitoring / Control

The JW-VM01 functions as the pressure sensing component within this architecture.

For broader industrial sensing requirements, explore JW-IoT’s Industrial Automatic Sensors.

For projects involving sensors, data acquisition and intelligent industrial monitoring, visit Industrial IoT Monitoring.

Applications

The JW-VM01 capacitive vacuum pressure gauge can be considered for compatible applications including:

• Semiconductor processing chambers
• PECVD process equipment
• Plasma sterilizers
• Vacuum coating equipment
• Industrial vacuum systems
• Laboratory vacuum systems
• Low-vacuum process monitoring
• Nuclear industry vacuum systems
• Vacuum control equipment

Final selection should always consider pressure range, accuracy requirement, media compatibility, connection type and system interface.

How to Select the Correct JW-VM01 Configuration

When requesting a quotation or technical recommendation, it is helpful to provide the following information:

1. Required pressure range
   For example: 0–10 Torr.
2. Required output
   0–10 V or 0–5 V.
3. Required accuracy
   Confirm the accuracy option required for the project.
4. Process gas or medium
   Especially important when special or potentially corrosive gases are used.
5. Process connection
   Confirm the required vacuum connection.
6. Electrical connection
   Confirm the connector required by the equipment.
7. Operating temperature
   Provide the expected media and ambient conditions where relevant.

Providing this information helps avoid selecting a gauge based only on pressure range.

JW-IoT Industrial Pressure and Vacuum Measurement

JW-IoT supplies industrial sensing products for pressure, vacuum and process monitoring applications.

For projects involving a broader industrial measurement system, related product categories include:

• Industrial Automatic Sensors
• High Accuracy Pressure Transmitters
• Industrial Pressure Transmitters
• Capacitive Differential Pressure Transmitters
• Industrial IoT Monitoring

For a new project, provide the measurement range, process conditions, required signal and connection requirements so that the appropriate sensor configuration can be evaluated.

Request a Vacuum Gauge Configuration

If you are selecting a capacitive vacuum pressure gauge for semiconductor equipment, PECVD, vacuum coating, plasma processing, laboratory vacuum systems or industrial vacuum control, send JW-IoT your required:

Pressure range + output + accuracy + process gas + process connection + electrical connection

JW-IoT can then evaluate the appropriate JW-VM01(JY11) configuration for the project.

Explore: Industrial Automatic Sensors
Solution: Industrial IoT Monitoring
Contact JW-IoT: Send your vacuum measurement requirements for model selection and project support.