40mm Compound Liquid Filled Vacuum Gauge -1-5 Bar Dual Range for Negative Positive Pressure Systems
40mm Compound Pressure Gauge 5 Bar Liquid Filled
Product Introduction
Featuring a compact 40mm dial size and a compound measuring range up to 5 Bar, this gauge is suitable for vacuum pumps, compressors, pneumatic equipment and industrial machinery. The glycerin or silicone oil filling helps dampen pointer oscillation caused by vibration and pressure pulsation, contributing to improved readability in demanding operating environments.
Key Features
- Measures both vacuum and positive pressure
- 40mm (1.5 inch) compact dial size
- Compound measuring range up to 5 Bar
- Liquid filled design for vibration resistance
- Glycerin or silicone oil filling options
- Bourdon tube measuring mechanism
- Dual scale display available
Technical Specifications
| Item | Specification |
|---|---|
| Product Type | Liquid Filled Pressure Gauge |
| Measuring Principle | Bourdon Tube |
| Dial Size | 40 mm (1.5 Inch) |
| Pressure Units | Bar / PSI |
| Filling Medium | Glycerin / Silicone Oil |
| Accuracy | Class 2.5 |
| Design Standard | EN 837-1 |
| Pressure Element | Copper Alloy Bourdon Tube |
| Movement | Brass |
| Connection Material | Brass |
| Case Material | Stainless Steel |
| Window Material | Polycarbonate |
| Mounting Type | Bottom Mount |
| Thread Options | BSP / PT / NPT |
| Protection Rating | IP65 |
| Customization | Dial, Thread and Logo Available |
Applications
- Vacuum pump monitoring systems
- Air compressor pressure indication
- Pneumatic equipment and control systems
- HVAC servicing and maintenance applications
- OEM industrial machinery and equipment
- General industrial vacuum and pressure monitoring
Product Advantages
1. Dual Vacuum and Pressure Measurement
The compound design allows operators to monitor both negative and positive pressure conditions using a single instrument.
2. Enhanced Stability in Vibrating Environments
The liquid-filled construction helps reduce pointer flutter caused by equipment vibration and pressure pulsation, supporting clearer readings during operation.
3. Compact Space-Saving Design
The 40mm dial size is suitable for equipment with limited installation space while maintaining good readability.
4. Improved Reading Performance
Glycerin or silicone oil filling provides a damping effect that contributes to smoother pointer movement and easier interpretation of pressure values.
Working Principle
Changes in vacuum or positive pressure cause the Bourdon tube to deform elastically. This movement is transferred through an internal linkage mechanism, rotating the pointer across the dial face to indicate the corresponding compound pressure value.
Frequently Asked Questions
What is a compound pressure gauge?
A compound pressure gauge measures both vacuum and positive pressure within a single instrument.
Why choose a liquid filled compound gauge?
Liquid filling helps reduce pointer oscillation caused by vibration and pressure pulsation, improving readability under dynamic conditions.
Can this gauge be used with vacuum pumps?
Yes. Compound pressure gauges are commonly used in vacuum pump systems where both vacuum and positive pressure indication may be required.
What filling liquids are available?
Glycerin and silicone oil are commonly used depending on operating temperatures and application requirements.
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