Product details
Weiss Bimetal Dial Thermometer | 5VBM9-30-130 | 5″ Dial | 9″ Stem
Product Description
The 5VBM9-30-130 is designed for applications where temperature must be monitored from a distance. The “5VBM” designation identifies this as a 5-inch (125 mm) Dial thermometer with a Vertical (Bottom) Mount connection. Unlike smaller gauges, the 5-inch face provides a high-resolution scale that is easily readable in large mechanical rooms in Dubai and Abu Dhabi.
This model features a 9-inch (225 mm) stem, specifically designed to penetrate thick insulation and reach the core of large-diameter pipes. The temperature range of 30 to 130°F (0 to 55°C) is optimized for Chilled Water (CHW) and cooling tower systems. Built with an all-stainless steel construction and a hermetically sealed case, it is immune to the high humidity and corrosive saline air common in the Middle East.
Key Features
- Massive 5″ High-Visibility Dial: Provides an oversized display with bold markings, allowing operators to check temperatures accurately from across a plant room.
- 9″ Extra-Long Stem: Engineered for large pipes and heavily insulated systems, ensuring the sensor is fully immersed in the fluid flow.
- All-Stainless Steel Construction: Both the case and the stem are made of 304 Stainless Steel, offering superior durability against rust and chemicals.
- Hermetically Sealed: The case is vacuum-sealed to prevent internal fogging and moisture ingress, a critical requirement for chilled water applications in the UAE.
- External Reset: Features a calibration adjustment screw on the back of the case, allowing for easy field recalibration to maintain accuracy.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | 5VBM9-30-130 |
| Dial Size | 5″ (125 mm) |
| Stem Length | 9″ (225 mm) |
| Range | 30 to 130°F / 0 to 55°C |
| Mounting Type | Vertical (Bottom) Mount |
| Connection Size | 1/2″ NPT |
| Case Material | 304 Stainless Steel |
| Internal Type | Bimetal Helix |
| Accuracy | $\pm$
1% of Span (ASME B40.3 Grade A) |
Frequently Asked Questions
- Q: Why use a 9″ stem?
- A: In large UAE infrastructure projects, pipes are often 12″ or larger and wrapped in thick insulation. The 9″ stem ensures the thermometer reaches the water flow rather than just measuring the temperature near the pipe wall.
- Q: Is the dial glass or plastic?
- A: This model typically comes with a heavy-duty Instrument Glass window, though shatter-proof acrylic is an available option for high-safety areas.
- Q: Does this require a thermowell?
- A: For pressurized piping, it must be installed in a 9″ Weiss Thermowell (typically model E9-35BS) to prevent leaks and allow for maintenance without system shutdown.
