Product details
Weiss Bimetal Dial Thermometer | 5VBM4-130 | 5″ Dial | 4″ Stem
Product Description
The 5VBM4-130 is specifically engineered for applications where temperature must be monitored clearly from a distance. The “5VBM” designation identifies this as a 5-inch (125 mm) Dial thermometer with a Vertical (Bottom) Mount connection. This vertical orientation is ideal for mounting on top of horizontal pipelines, ensuring the dial faces the operator directly in Dubai and Abu Dhabi mechanical rooms.
This model features a temperature range of 30 to 130°F (0 to 55°C), which is optimized for Chilled Water (CHW) and cooling systems. The narrow range provides higher resolution, allowing technicians to easily detect small temperature fluctuations in the cooling loop. The 4-inch (100 mm) stem offers an ideal immersion depth for standard 4″ to 8″ diameter pipes, ensuring an accurate thermal reading.
Key Features
- Oversized 5″ High-Visibility Dial: The large display with bold black markings allows for easy temperature checks from a distance, improving efficiency in large plant rooms.
- 4″ Industrial Stem: Specifically sized for common pipeline diameters, providing optimal immersion for reliable thermal accuracy.
- 304 Stainless Steel Construction: Both the case and the stem offer superior resistance to rust and corrosion in the high-humidity environments 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 common.
- External Reset: Includes an easy-to-access calibration screw on the back of the case for simple field adjustment to maintain accuracy.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | 5VBM4-130 |
| Dial Size | 5″ (125 mm) |
| Stem Length | 4″ (100 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 5″ dial instead of the standard 3″ dial?
- A: In large district cooling plants or high-rise mechanical floors, thermometers are often mounted high up. A 5″ dial ensures the operator can read the temperature safely from floor level.
- Q: Is this thermometer suitable for outdoor installation?
- A: The 304 Stainless Steel case and hermetic seal make it highly resistant to the UAE’s intense sunlight and humidity.
- Q: Does this require a thermowell?