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LBT-2505 Wire and Cable Smoke Density Tester

The national cable industry is vigorously promoting the development of low-smoke, halogen-free cables and materials. These products all require measurement of smoke density. The primary principle behind smoke-density measurement is that, within a defined chamber, a cable or material generates smoke under specified combustion or radiant‑heat conditions. As a light beam passes through the smoke, it experiences attenuation; by measuring the beam’s transmittance and performing calculations, both the optical density and the smoke density are determined.

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Switch and socket, wire and cable testing instruments

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lbt@lbt.ltd

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+86-15102211717

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LBT-2505 Wire and Cable Smoke Density Tester

Description

Product Introduction:

The national cable industry is vigorously promoting the development of low-smoke, halogen-free cables and materials. Such products all require measurement of cable smoke density. The primary principle behind smoke‑density measurement is that, within a defined chamber, a cable or material generates smoke under specified combustion or radiant‑heat conditions; as a light beam passes through this smoke, it experiences attenuation. By measuring the transmittance of the light beam and calculating the resulting optical density, the smoke density can be determined. The wire and cable smoke‑density tester complies with GB/T 17651.1–2 and EN 1034‑1–2, “Determination of Smoke Density of Cables and Optical Fibers Under Specified Conditions,” and is a testing device used to measure the transmittance of smoke emitted when all insulated metallic‑conductor cables or optical fibers—intended for the transmission of electrical power or signals—are subjected to horizontal flame exposure under defined test conditions.

Implementation Standard

GB/T 17651.1–2, EC 1034-1–2 “Determination of Smoke Density of Cables and Optical Fibers Burning under Specified Conditions”

Technical Specifications:

Parameter Category	Parameter content
Light Source Configuration	Clean crystal bulb tungsten halogen lamp, color temperature 2900K, power 100W, DC 12V, rated luminous flux 2000lm–3000lm.
Optoelectronic Detection Module	U.S.-imported silicon photovoltaic cell module; load resistance ≤ 1000 Ω, with the recorder’s input impedance set to 10,000 times the battery’s load resistance; transmittance linearity accuracy ±1%.
Smoke density optical density measurement range	0%~100%
Filter and Optical Path Mounting Structure	It can accommodate various types of optical filters; it supports wall‑mounting with a dedicated light source and an imported high‑resolution photodiode receiver.
Laboratory Sealed Structure	Equipped with door and window sealing structures.
Standard parameters of the light source	Power: 100 W; Voltage: DC 12 V; Luminous flux: 2,000–3,000 lm; Color temperature: 2,900 K.
Optical Path Calibration System	One-touch 5‑point automatic calibration, with calibration levels at 0%, 25%, 50%, 75%, and 100%.
Heating system	Built-in chamber, capable of rapidly heating to (25±5)°C.
Control system	Computer-based measurement and control system, with a Chinese-language operation menu, supporting data curve display.
Exhaust system	Equipped with an air exhaust port, with an exhaust airflow rate of 7–15 m³/min.
Fuel combustion ratio	Ethanol 90% ± 1%, methanol 4% ± 1%, water 6% ± 1%
Combustion appliance	Alcohol combustion box
Combustion chamber installation height	100 mm ± 10 mm above the ground

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

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Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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LBT-2505 Wire and Cable Smoke Density Tester

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