Thermal Conductivity of Insulating Slabs Manufacturer,Supplier and Exporter in India
Product Code : EL-HTL-10054
Jlab Export is a leading Thermal Conductivity of Insulating Slabs Manufacturer,and suppliers in India
Thermal Conductivity of Insulating Slabs (code EL-HTL-10054) is a guarded hot plate apparatus for measuring how readily an insulating material conducts heat. Two slab specimens of equal thickness sit on either side of a 110 mm main heater ringed by a radial guard heater, with water-cooled plates on their outer faces, all inside an insulated enclosure. JLab manufactures this two-slab conductivity apparatus in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Main heater | Plate 110 mm dia., mica heater sandwiched between copper plates |
| Radial guard heater | Plate ID 120 mm, OD 200 mm, mica heater between copper plates |
| Cooling plates | Water circulated, 2 nos. |
| Heater control | Dimmerstat, 2 A, 2 nos., one for each heater |
| Instruments | Voltmeter and ammeter with selector switches; multichannel digital temperature indicator, 0.1 °C least count |
| Services | 230 V AC stabilised supply with earthing; water about 4–5 litre/min; bench area 1 m x 1 m x 0.5 m height |
| Documentation | Technical manual |
| Quality check | Each slab apparatus is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Product code | EL-HTL-10054 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
Why the Guard Heater Matters
The stack is symmetrical: cooling plate, specimen, heater plates, specimen, cooling plate. If the edge of the main heater plate were hotter than its surroundings, part of its heat would leak sideways and the result would read too high. The radial guard heater, run on its own dimmerstat, is brought to the same temperature as the main heater plate, so there is no temperature difference across the gap between them. All the main heater input then flows axially through the two slabs to the cooling plates, giving the one-dimensional heat flow that Fourier’s law assumes.
Calculating k From the Readings
The selector switches put the voltmeter and ammeter on the main heater, so Q = V × I. Half of Q passes through each slab, so k = Q t / (2 A (Th − Tc)), where t is the slab thickness, A the face area of the 110 mm main heater plate, and Th and Tc the hot and cold face temperatures. Insulating slabs take a long time to settle, so readings are logged until the temperatures stop changing; the 0.1 °C least count shows when they have.
Other Thermal Conductivity Apparatus
- Thermal Conductivity of Liquid — guarded hot plate over a liquid test cavity, with ring and top guard heaters.
- Thermal Conductivity of Insulating Powder — powder packed between two concentric copper spheres, heated from inside.
- Composite Walls Apparatus — three pairs of plates of different materials in series around a heater.
- Thermal Conductivity of Metal Rod — a metal bar heated at one end and cooled by a water jacket.
All four sit with this apparatus in Heat Transfer Lab, a section of Engineering Lab Equipment.
Request a Quote
To order, add the apparatus through Add To Cart or give the quantity and the delivery address on the contact page, and a quotation will follow.
Last updated: 30 October 2026
