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Glass Thermometers and Inserts
-- Steady & Reliable Manufacturer --
Brief Description
Glass Thermometers and their protective inserts are a traditional, highly accurate, and reliable solution for local temperature measurement, particularly where simplicity and resistance to vibration are key.
In-depth Overview
These industrial thermometers typically use a colored liquid (often non-toxic alcohol or mercury-free specialized fluid) sealed in a glass capillary tube. They are usually housed within a protective V-shaped aluminum or brass case that mounts to a thermowell assembly. Glass thermometer inserts—the removable capillary and scale—are designed for easy replacement, ensuring the protective well remains in the process line. They require no calibration or power source, offering excellent long-term stability and making them a standard choice for marine and process piping applications.
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Specification
| Parameter | Details |
|---|---|
| Sensing Element | Sealed Glass Capillary Tube (Liquid-in-Glass) |
| Case/Housing | V-shaped Aluminum (Standard) or Brass |
| Temperature Range | −30∘C to 300∘C (depending on fluid) |
| Scale Type | White or Yellow Scale Plate (C and F available) |
| Stem Connection | Threaded or Flanged connections for Thermowell |
| Immersion Length | Standard 63mm to 300mm (custom lengths available) |
| Accuracy | High precision, often ±1 scale division |
| Mounting Type | Straight, 90∘ Angle, or 135∘ Angle |
Applications
Marine and Shipbuilding: Engine cooling systems, fuel lines, and cargo heating systems where robustness is vital.
Process Piping: Local temperature indication on standard water, oil, and steam lines.
Laboratories and R&D: Used as highly accurate reference thermometers in non-critical applications.
Heating Systems: Monitoring flow and return temperatures in industrial hot water loops.
Key Advantages
Absolute Reliability: No electrical power, no electronic drift—purely mechanical/physical operation.
High Visibility: Large scale and distinct colored liquid column offer clear, unambiguous readings.
Cost-Effective Maintenance: Only the glass insert needs replacement, not the entire assembly or well.
Corrosion Resistance: Protective thermowells made of brass or stainless steel shield the glass from the process media.
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Glass Thermometers and Inserts Manufacturers
Wuxi Huihua Special Instrumentation Co., Ltd. was established in December 2001, the registered capital is 5 million yuan, the existing staff of more than 50 small and medium-sized joint-stock enterprises.
The company specialises in the production of various types of special instruments, alternative to the localisation of imported instruments.To seismic pressure gauge, seismic electric contact pressure gauge, stainless steel pressure gauge, diaphragm corrosion-resistant pressure gauge, marine pressure gauge and other series as the main products. On the basis of field instruments, we have developed various kinds of pressure transmitters, pressure controllers, digital pressure gauges and so on. There are more than 30 series and 3000 specifications. Products are widely used in petroleum, chemical, paper, metallurgy, mining, chemical fibre, electric power, food, environmental protection, rubber and plastic, hydraulics and many other industries, and more than 2,000 domestic customers to establish a friendly relationship with the national large and medium-sized enterprises to establish a good partnership, won the majority of users praise, and set up a corporate brand image.
