Overview
The WIKA 9425640 is a mechanical Bourdon tube analog pressure gauge designed for accurate, direct pressure measurement in industrial and pneumatic applications. Classified as a mechanical pressure measuring instrument, it operates without any supply voltage, making it reliable for harsh environments where electronic gauges may fail. This used unit comes in a lot of 2, providing cost-effective options for systems requiring multiple pressure monitoring points.
Key Features
- Bourdon Tube Technology – The pressure of the measuring medium acts on the inside of the tube and produces a motion in the non-clamped end, which is the measure of the pressure and is indicated via the movement
- No Power Required – Mechanical pressure measuring instruments operate without any supply voltage, ensuring continuous operation without electrical dependency
- Wide Application Range – Suitable for liquid or gaseous media, which are not highly viscous or crystallising, so long as they do not attack copper alloy parts
- EN 837-1 Compliance – Bourdon tube pressure gauges are developed, qualified and manufactured to EN 837-1 by WIKA
- Used Condition, Lot of 2 – Cost-effective alternative for multiple measurement points
Technical Specifications
| Measurement Range | 0–30 PSI (0–200 kPa) |
| Measurement Type | Gauge pressure |
| Sensing Element | Bourdon tube (C-shaped) |
| Display Type | Analog dial pointer |
| Operating Principle | Mechanical (no power required) |
| Suitable Media | Compressed air, neutral gases, water, non-viscous liquids |
| Material Construction | Copper alloy measuring element typical for standard version |
| Manufacturing Standard | EN 837-1 |
| Manufacturer | WIKA |
| Model | 9425640 |
| Condition | Used, Lot of 2 |
Typical Applications
- Compressed air monitoring in pneumatic systems
- Industrial equipment pressure verification
- Plant instrumentation and maintenance
- Process control and measurement stations
- HVAC and refrigeration systems
- Backup or redundant pressure indication
Compatibility & Replacements
Compatible With
- Standard 1/4″ NPT or 1/2″ NPT process connections (typical for WIKA gauges)
- Compressed air systems and pneumatic circuits
- Industrial pressure monitoring panels
- Process equipment requiring gauge pressure indication
- Any application requiring 0–30 PSI mechanical measurement
Replaces / Drop-In Replacement For
The WIKA 9425640 is a direct replacement for earlier WIKA 9425640 units. For specific interchangeability with other gauge models, verify dial size, connection type, and accuracy class with your system integrator before ordering.
Works With
- Standalone mechanical measurement (no integration required)
- Manual pressure monitoring stations
- Analog data logging systems with manual readings
- Any application accepting standard gauge connections
