Product details
Weiss Liquid Filled Gauge | LF251 | 2.5″ Dial | 0-300 PSI/BAR
Product Description
The LF251 is engineered to provide stable and accurate readings where standard “dry” gauges would fail. The gauge is Glycerin Filled, which dampens the internal movement to eliminate “needle flutter” caused by mechanical vibration or rapid pressure surges. This makes it an essential instrument for compact booster pump sets and pneumatic equipment in Dubai and Abu Dhabi.
This model features a 2.5-inch (63 mm) dial with a dual-scale range of 0-300 PSI (0-20 BAR). The “1” in the LF251 designation identifies it as a Lower (Bottom) Mount configuration. Housed in a polished 304 Stainless Steel case with a crimped bezel, the gauge is hermetically sealed to prevent internal fogging and protect against the humid, saline air common in Middle Eastern coastal regions.
Key Features
- Compact Vibration Dampening: Glycerin filling ensures a steady pointer and extends the life of the instrument in high-vibration, space-limited applications.
- Corrosion-Resistant Housing: The 304 Stainless Steel case offers exceptional resistance to rust and environmental degradation in UAE plant rooms.
- Dual Scale Readout: Simultaneously displays pressure in PSI and BAR, satisfying international engineering and safety specifications.
- Hermetically Sealed: Prevents moisture ingress and internal fogging, ensuring a clear display in high-humidity environments.
- Precision Brass Internals: Built with a high-grade copper alloy/brass movement for consistent and accurate performance with non-corrosive media.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | LF251 |
| Dial Size | 2.5″ (63 mm) |
| Range | 0 – 300 PSI / 0 – 20 BAR |
| Filling | Glycerin (Standard) |
| Connection Location | Lower Mount (Bottom) |
| Connection Size | 1/4″ NPT |
| Case Material | 304 Stainless Steel |
| Internal Material | Copper Alloy / Brass |
| Accuracy | $\pm$
1.6% of Span (ASME B40.100 Grade B) |
Frequently Asked Questions
- Q: Can this gauge be used for high-rise water systems?
- A: Yes, the 300 PSI range is common for secondary chilled water loops and domestic water distribution in many UAE buildings.
- Q: Why is there an air bubble at the top of the dial?
- A: This is normal and necessary. The bubble acts as an expansion chamber to allow the glycerin to expand and contract with temperature changes without damaging the seals.
- Q: Is this gauge suitable for compressed air?
- A: Yes, it is excellent for industrial air compressors where mechanical vibration is present.
