The Thermal Conductivity Apparatus, Model-8050PTH, is a microprocessor based instrument designed to measure and display the thermal conductivity of insulating materials using the Guarded Hot Plate Method. The equipment satisfies the latest guidelines of Indian Standards IS-3346 & broadly conforms to American standard ASTM177. The instrument is automatic, programmable and designed with latest Integrated Circuit Technology. The instrument displays the “K” value directly in engineering units. No expertise and adjustments are required for installation. Windows based software is provided to display temperature of thermocouples and power fed to central heater. K-Value is automatically calculated and displayed as per sample parameters and temperature data.