Gn Flow Meter is a leading manufacturer of microfluidic measurement and control instruments.

Pirani Vacuum Gauge Vacuum : Functions & Applications

2026-07-21

Pirani Vacuum Gauge Vacuum : Functions & Applications 2

Pirani Vacuum Gauge Vacuum : Functions & Applications 3

Working Principle

Since the thermal conductivity of gas molecules varies with air pressure, applying a constant current to a heating wire results in varying rates of heat loss through the gas depending on the pressure; consequently, the wire maintains different temperatures and exhibits different resistance values, allowing the air pressure to be determined by measuring this resistance.

Characteristic

◆ One-button smart calibration: automatic identification of atmosphere and high vacuum

◆ Temperature monitoring corrects vacuum,accuracy is not affected by ambient temperature

◆ Analog and digital dual output form,wide range of applications

◆ KF16 standard flange and RJ45 electrical plugs are used for easy installation and wiring.

◆ Inter Highly compatible with the interface of international mainstream brands,the division is seamlessly replaced

◆ All stainless steel measuring chamber is suitable for high clean ultra high vacuum environment

◆ The shape is exquisite and compact,saving equipment space.

Application

◆ Pre-stage vacuum pressure monitoring Safety circuit in vacuum system

◆ Vacuum measurement and control in the low and medium vacuum range For example:Analytical Instruments Vacuum Furnace

◆ Vacuum Packaging Vacuum Coating Low Vacuum Pump Testing

Advantages

Simple and reliable structure.

Disadvantages

Small dynamic range for sensing near atmospheric pressure; susceptible to fluctuations caused by temperature changes.

Conclusion

Pirani gauges represent a fusion of simplicity, speed, and cost-effectiveness in vacuum measurement. Their broad pressure range and robust, vibration-resistant operation make them indispensable in industries where process stability and rapid response are critical. As vacuum automation and real-time monitoring demands increase, these gauges remain a foundational standard for routine and high-throughput applications.

Pressure Sensor：Functions & Applications

recommended for you

Pressure Sensor：Functions & Applications

Get in touch with us

input must not exceed 280 in length!

name

Please enter a valid email address!

Please enter a valid phone number!

phone/whatsApp

input must not exceed 280 in length!

Company Name

textarea must not exceed 65530 in length!

content

Shanghai Cixi Instrument CO.,LTD was founded in 2008 and is located in Shanghai Songjiang industrial park. We are the professional flow meter manufacture who integrate R&D, production and sales as one manufacturers.