Product details
Weiss Liquid Filled Gauge | LF445 | 4″ Dial | 0-200 PSI/BAR
Product Description
The LF445 is engineered to provide stable and accurate readings where standard dry gauges would suffer from pointer oscillation. The gauge is Glycerin Filled, which dampens the internal movement and protects the gear mechanism from mechanical wear. This is essential for industrial control panels in Dubai and Abu Dhabi that are mounted on or near high-vibration pump skids and compressors.
Equipped with a 4-inch (100 mm) dial and a dual-scale range of 0-200 PSI (0-14 BAR), the LF445 offers excellent visibility. The “5” in the LF445 designation typically identifies it as a Center Back Mount (CBM) configuration, allowing for a clean, recessed installation into panels. The case is constructed from 304 Stainless Steel, ensuring it remains rust-free even in the humid, coastal air of the Middle East.
Key Features
- Vibration Dampening: Glycerin filling ensures a steady pointer and extends instrument life by protecting internal parts from vibration-induced fatigue.
- Streamlined Back Mount: The Center Back Mount (CBM) design is ideal for panel installations where a professional, flush-fit appearance is required.
- Large 4″ Dial face: Provides high resolution and is easily readable from across a plant room, reducing the risk of operator error.
- Stainless Steel Durability: The hermetically sealed 304 SS case protects against moisture ingress and internal fogging.
- Dual Scale Readout: Simultaneously displays PSI and BAR, making it universally applicable for international project standards in the UAE.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | LF445 |
| Dial Size | 4″ (100 mm) |
| Range | 0 – 200 PSI / 0 – 14 BAR |
| Filling | Glycerin (Standard) |
| Connection Location | Center Back Mount (CBM) |
| Connection Size | 1/4″ NPT |
| Case Material | 304 Stainless Steel |
| Internal Material | Copper Alloy / Brass |
| Accuracy | $\pm$
1.0% of Full Scale (ASME B40.100 Grade 1A) |
Frequently Asked Questions
- Q: Can this gauge be used for potable water?
- A: Yes, the brass internals are perfectly safe for domestic water monitoring.
- Q: Does it include a mounting flange?
- A: While the LF445 is a back-mount gauge, for flush panel mounting, you may require a separate U-clamp or front flange accessory depending on your specific model variant.
- Q: Why is there a bubble at the top of the dial?
- A: This is normal. The bubble allows for the natural expansion and contraction of the glycerin due to ambient temperature changes without affecting the accuracy or the seal.