Product details
Weiss Bimetal Dial Thermometer | 5VBM12-0-130 | 5″ Dial | 12″ Stem
Product Description
The 5VBM12-0-130 is engineered for environments where temperature must be monitored clearly from floor level, such as high-ceiling plant rooms or large district cooling galleries. The “5VBM” designation identifies this as a 5-inch (125 mm) Dial thermometer with a Vertical (Bottom) Mount connection. This orientation is ideal for installation on top of horizontal pipelines, providing a clear, upright display for operators in Dubai and Abu Dhabi.
This model features a range of 0 to 130°F (-17 to 55°C), which is perfectly optimized for Chilled Water (CHW) and cooling tower applications. The standout feature is the 12-inch (300 mm) stem, specifically designed for extra-large diameter pipes or systems with thick thermal insulation (3-4 inches), ensuring the sensor reaches the true core of the fluid flow for an accurate reading.
Key Features
- Massive 5″ High-Visibility Dial: The oversized display with bold black markings allows technicians to check critical cooling temperatures from a distance without needing special access.
- 12″ Extra-Long Industrial Stem: Provides the necessary reach for very large pipelines and heavily insulated cooling systems common in UAE infrastructure projects.
- All-Stainless Steel Construction: Both the case and the stem are crafted from 304 Stainless Steel, offering superior resistance to the high humidity and corrosive air of the Middle East.
- Hermetically Sealed Case: Vacuum-sealed to prevent internal fogging and moisture ingress, a critical feature for chilled water applications where condensation is a constant challenge.
- External Recalibration: Includes an easy-to-use adjustment screw on the back of the case for simple field calibration to maintain precision.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | 5VBM12-0-130 |
| Dial Size | 5″ (125 mm) |
| Stem Length | 12″ (300 mm) |
| Range | 0 to 130°F / -17 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 12″ stem for chilled water?
- A: Large district cooling pipes (16″ diameter and above) often have 4 inches of insulation. A 12″ stem ensures the sensor bypasses the insulation and is fully immersed in the active water flow.
- Q: Does this thermometer require a power source?
- A: This is a purely mechanical bimetal thermometer that requires no batteries or wiring, making it ideal for “install and forget” applications.
- Q: Does this include the thermowell?
- A: For pressurized piping, it must be installed in a 12″ Weiss Thermowell (typically model E12-35BS) to prevent system leaks and allow for maintenance without shutdown.
