Product details
Weiss Bimetal Thermometer | 3RBM25/130 | 3″ Dial | -30 to 130°F & °C
Product Description
The 3RBM25/130 features a 3-inch (75 mm) dial with a temperature range of -30 to 130°F (-35 to 55°C). This specific range makes it highly versatile in the Middle Eastern market, covering everything from sub-zero refrigeration and cold rooms to high-ambient outdoor temperatures and chilled water return lines.
Constructed with a 304 Stainless Steel case and a clear glass lens, the 3RBM series is “Hermetically Sealed” to prevent fogging and moisture ingress—a critical feature for instruments exposed to the high humidity of coastal regions like Dubai and Sharjah. The Rear Mount (Center Back) connection allows for a clean, direct installation into tanks, pipes, or equipment panels.
Key Features
- Hermetically Sealed Case: Prevents internal condensation and fogging, ensuring the dial remains readable in humid or wash-down environments.
- Dual Scale Display: Provides temperature readings in both Fahrenheit and Celsius to meet international project standards in the UAE.
- 304 Stainless Steel Construction: Offers excellent durability and corrosion resistance for both indoor and outdoor installations.
- External Reset: Equipped with a calibration screw on the back of the case, allowing for easy field adjustments to maintain accuracy.
- Bimetal Helix Sensing: Provides a fast and accurate response to temperature changes without the use of toxic fluids or glass tubes.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | 3RBM25/130 |
| Dial Size | 3″ (75 mm) |
| Range | -30 to 130°F / -35 to 55°C |
| Connection Type | Rear Mount (Center Back) |
| Connection Size | 1/2″ NPT |
| Stem Length | 2-1/2″ (Standard) |
| Case Material | 304 Stainless Steel |
| Accuracy | $\pm$
1% of Full Scale (ASME B40.3 Grade A) |
Frequently Asked Questions
- Q: Is this thermometer suitable for walk-in freezers?
- A: Yes, the -30°F range is perfect for monitoring freezer and cold room temperatures in the UAE’s food and beverage sector.
- Q: Can I install this directly into a pipe?
- A: While it has a 1/2″ NPT thread, it is highly recommended to use a Bimetal Socket (Thermowell) like the BN series to protect the stem and allow for service without draining the system.
- Q: How do I calibrate the 3RBM25/130?
- A: There is a hex nut on the back of the case. While the stem is immersed in a known temperature (like an ice bath), you can turn the nut to align the pointer to the correct temperature.
