UL 1278 Figure 10.1 Conical Test Probe
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The UL 1278 Figure 10.1 Conical Test Probe is a specialized compliance verification instrument engineered for safety testing of movable, wall-mounted, and ceiling-mounted electric room heaters. It incorporates a precision-machined conical geometry—essential for simulating inadvertent human contact with hazardous thermal or mechanical components. Fabricated from heat-resistant stainless steel to maintain structural integrity at elevated temperatures proximate to heating elements, it is integrated with an insulating nylon handle for secure manipulation during test procedures. Characterized by lightweight yet rigid construction, it ensures consistent compliance verification, confirming that dangerous components remain inaccessible, and strictly adheres to UL’s current safety protocols for heater manufacturers and testing laboratories.
Specifications:
• Probe Type: Conical Test Probe (UL 1278 Figure 10.1 compliant for electric heater safety testing)
• Probe Material: Heat-resistant stainless steel (maintains dimensional stability at elevated temperatures)
• Handle Material: Nylon (electrically insulating, non-slip, and thermally resistant for operator safety)
• Key Dimensions:
– Base Diameter: 1.25 inches (31.75 mm)
– Tip Diameter: 0.25 inches (6.35 mm)
– Total Length: 4 inches (101.6 mm)
(precision-machined to conform with UL 1278 Figure 10.1 dimensional requirements)
• Core Function: Verifies inaccessibility of hazardous thermal elements or mechanical components in electric room heaters
• Applied Force: Negligible force (simulates light, accidental user contact)
Test Procedures:
• Inspect the probe for physical damage (e.g., deformation, corrosion, or handle fractures).
• Energize the electric heater and allow thermal stabilization at normal operating temperature.
• Grasp the nylon handle and align the conical tip with potential access apertures (e.g., ventilation grilles, structural gaps).
• Gently advance the probe toward hazardous components (e.g., radiant heating elements).
• Determine whether the probe contacts any dangerous components.
• Document compliance status with UL 1278 safety requirements (pass/fail determination).