Baumer AF Capsule Pressure Gauge

A. Product Overview

Baumer AF capsule pressure gauge is a precision mechanical pressure gauge used for low pressure measurement. It is available in DN 63, DN 100, DN 125 and DN 150 mm dial sizes, making it suitable for both compact panels and larger industrial installations.

This gauge is designed with an AISI 304 stainless steel bayonet case, with optional AISI 316L stainless steel case for more demanding environments. The sensing element is made from AISI 316 stainless steel capsule material, and the process connection is also made from AISI 316 stainless steel, making the gauge suitable for clean and non-corrosive applications.

The pressure range covers negative and positive low pressure applications from -6000 to -250 mmWC and 250 to 6000 mmWC. With accuracy class 1.6 and reference standard EN 837-3, the Baumer AF pressure gauge is suitable for reliable measurement in industrial and process applications.

It is available with multiple process connection options including 1/4 inch BSP(M), 1/4 inch NPT(M), 1/2 inch BSP(M) and 1/2 inch NPT(M). Mounting options vary based on dial size, allowing flexible installation in panels, pipelines and equipment.

B. Working Principle

The Baumer AF capsule pressure gauge works on the capsule sensing principle. Inside the gauge, a capsule type sensing element responds to low pressure applied through the process connection. When pressure enters the gauge, the capsule expands or contracts depending on whether the applied pressure is positive or negative.

This movement is transferred through a mechanical linkage and gear mechanism to the pointer. The pointer then moves across the calibrated dial and displays the pressure reading in mmWC.

Capsule pressure gauges are specially used for low pressure measurement because the capsule element is sensitive enough to detect small pressure changes. This makes the Baumer AF gauge suitable for applications where a standard bourdon tube pressure gauge may not provide accurate low pressure readings.

C. Why It Is Used

Baumer AF capsule pressure gauge is used where accurate low pressure measurement is required. It is suitable for applications involving clean air, gas pressure, ventilation systems, draft pressure, low pressure process lines and non-corrosive media.

It is preferred because it provides stable mechanical indication without requiring external power. The stainless steel construction improves durability and corrosion resistance in suitable environments. The availability of different dial sizes, process connections, mounting types and protection classes makes it useful for many industrial installations.

The gauge is also useful where operators need direct visual pressure indication for monitoring, safety checking, process control and maintenance inspection.

D. Suitable Buyers

Baumer AF capsule pressure gauge is suitable for the following buyers and industries:

Pharmaceutical companies requiring low pressure measurement in cleanrooms, process areas and utility systems.

Food and beverage plants needing stainless steel pressure gauges for clean air and process applications.

HVAC contractors and cleanroom contractors requiring low pressure gauges for air pressure and ventilation monitoring.

Power plants and boiler auxiliary systems where draft and low pressure monitoring is required.

Panel builders and OEMs who need compact and reliable mechanical pressure indication.

Instrumentation engineers and maintenance teams looking for low pressure measurement in mmWC range.

System integrators working on air handling units, duct pressure systems, gas lines and industrial automation panels.

Purchase managers looking for Baumer capsule pressure gauges with stainless steel construction and standard industrial connections.

FAQ

1. What is Baumer AF capsule pressure gauge used for?

Baumer AF capsule pressure gauge is used for measuring low pressure and vacuum pressure in mmWC range. It is commonly used for clean air, gases, draft measurement, HVAC systems, cleanrooms, process equipment and non-corrosive media.

2. What dial sizes are available in Baumer AF pressure gauge?

Baumer AF pressure gauge is available in DN 63, DN 100, DN 125 and DN 150 mm dial sizes.

3. What is the pressure range of Baumer AF capsule pressure gauge?

The pressure range is available from -6000 to -250 mmWC and 250 to 6000 mmWC.

4. What is the accuracy class of Baumer AF pressure gauge?

Baumer AF capsule pressure gauge has accuracy class 1.6.

5. What is the sensing element material?

The sensing element is made from AISI 316 stainless steel capsule material.

6. What is the case material of Baumer AF gauge?

The standard case is AISI 304 stainless steel with bayonet type construction. Optional AISI 316L stainless steel case is also available.

7. What process connection options are available?

Available process connections include 1/4 inch BSP(M), 1/4 inch NPT(M), 1/2 inch BSP(M) and 1/2 inch NPT(M).

8. What is the protection class of this gauge?

DN 63 mm has IP55 protection. DN 100, DN 125 and DN 150 mm have IP65 protection. Optional IP66, IP67 and IP68 protection classes are also available.

9. Is Baumer AF suitable for liquid applications?

Baumer AF is mainly suitable for clean air, gases and low pressure non-corrosive media. For liquid applications, compatibility with the process media, pressure range and installation condition should be confirmed before selection.

10. Which standard does Baumer AF pressure gauge follow?

Baumer AF capsule pressure gauge follows EN 837-3 reference standard.

11. Why should I choose a capsule pressure gauge instead of a bourdon pressure gauge?

A capsule pressure gauge is better for low pressure measurement because its sensing element is more sensitive to small pressure changes. Bourdon gauges are generally used for higher pressure ranges, while capsule gauges are preferred for low pressure and mmWC applications.

12. Is Baumer AF pressure gauge suitable for cleanroom applications?

Yes, Baumer AF pressure gauge can be used in cleanroom and HVAC applications where low pressure, air pressure or differential air pressure indication is required, provided the installation and range selection match the application.

13. Can Baumer AF pressure gauge measure negative pressure?

Yes, Baumer AF is available in negative pressure ranges from -6000 to -250 mmWC, making it suitable for vacuum and draft pressure applications.

14. Who should buy Baumer AF capsule pressure gauge?

Baumer AF is suitable for pharmaceutical plants, food and beverage industries, HVAC contractors, cleanroom contractors, power plants, OEMs, panel builders, system integrators, instrumentation engineers and maintenance departments.