METALLIC PROTECTOR THERMOMETER WLG-421
The WLG-421 is a rugged, marine-grade metal-armored glass thermometer designed specifically for reliable temperature measurement in marine systems, industrial pipelines, boilers, and process equipment. It ingeniously combines a precision internal-scale glass thermometer with a heavy-duty metal protective casing, providing clear and intuitive readings while effectively shielding the sensing element from pressure, vibration, and corrosive media. Featuring a straight configuration and a robust V-shaped aluminum housing, this product maintains stable performance across a wide temperature range and has received extensive certification for both marine and industrial applications.
| Parameter | Specification |
|---|---|
| Model | WLG‑421 |
| Type | Straight‑type internal‑scale glass thermometer with metallic protector |
| Housing | V‑shaped die‑cast aluminum (golden anodized finish available) |
| Sensing Medium | Organic liquid (alcohol/kerosene, blue/red) for −50°C to 200°C; Mercury (Hg) for 0°C to 600°C |
| Measurement Range | −50°C to +600°C (custom ranges available) |
| Accuracy | ±1 to 2 scale division values |
| Nominal Pressure | 6.4 MPa |
| Upper Body Length (H) | 110±2 mm, 150 mm, 200 mm |
| Immersion Probe Length (L) | 25, 30, 40, 60, 80, 100, 120, 160, 200 mm |
| Probe Material | Brass (≤300°C); Carbon steel / stainless steel (SS304, >300°C) |
| Connection Thread | G1/2", G3/4", M20×1.5, M27×2 (BSP / metric) |
| Protection | Optional double‑layer metal sleeve |
| Certifications | CCS, BV, ABS, LR, DNV, GL (marine type approvals) |
| Applications | Marine vessels, boilers, pipelines, industrial process equipment |
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