Product details
Weiss Industrial Glass Thermometer | A9U9-30-180 | 9″ Stem | 30 to 180°F/C
Product Description
The A9U9-30-180 is part of the premium Weiss 9-inch scale industrial series. The “U” designation in this model typically refers to a Rigid (Fixed) Angle configuration (90-degree angle), providing maximum stability and resistance to mechanical vibration. This fixed orientation is ideal for installation on vertical pipelines where the scale needs to face the technician horizontally.
This model is scaled for 30 to 180°F (0 to 82°C), providing high resolution for Domestic Hot Water (DHW) and heating water systems where temperatures are strictly regulated. The 9-inch (225 mm) stem is specifically engineered for large-diameter pipes or headers with thick thermal insulation, ensuring the sensing bulb reaches deep into the fluid stream for an accurate and rapid thermal response.
Key Features
- Sturdy Rigid Design: The fixed 90-degree angle provides a vibration-resistant mounting, perfect for high-traffic plant rooms in Dubai and Abu Dhabi.
- Extra-Long 9″ Industrial Stem: Designed to bypass heavy insulation and penetrate deep into large pipes, ensuring the sensor captures the true core temperature.
- Precise DHW Range: The 30-180°F scale offers high readability for hot water systems, where maintaining specific temperature setpoints is critical.
- Mercury-Free Blue Liquid: Utilizes a non-toxic blue spirit liquid that is environmentally safe and provides high visibility against the white scale.
- Rugged Valox® Case: Housed in an impact-resistant GE Valox® polyester case, built to withstand the high humidity and mechanical stress of Middle Eastern mechanical spaces.
Technical Specifications
| Specification | Details |
| Brand | Weiss Instruments |
| Model | A9U9-30-180 |
| Scale Size | 9″ (225 mm) |
| Stem Length | 9″ (225 mm) |
| Range | 30 to 180°F / 0 to 82°C |
| Mounting | Rigid 90° Angle (Fixed) |
| Case Material | GE Valox® (Polyester) |
| Internal Liquid | Blue Spirit (Mercury-Free) |
| Connection | 1-1/4″ – 18 UNEF Coupling Nut |
| Accuracy | $\pm$
1% of Range |
Frequently Asked Questions
- Q: When should I use a 9″ stem instead of a 6″ stem?
- A: Use the 9″ stem if your pipe diameter is large or if the pipe has more than 2 inches of insulation. This ensures the thermometer sensor is fully submerged in the active water flow.
- Q: Why use a rigid angle thermometer instead of an adjustable one?
- A: Rigid thermometers are often preferred in high-vibration environments as they have fewer moving parts, and they are a more cost-effective solution when the viewing angle is already fixed.
- Q: Does this include the thermowell?
- A: For pressurized applications, it must be installed in a 9″ Weiss Thermowell (typically model E9-35BS) to prevent leaks and allow for maintenance without system shutdown.