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I. Introduction

II. Procedures

A. Preparing the Instrument

B. Instrument Calibration

C. Set Measurement Parameters

D. Preparing Sections// Preparing Samples

E. Making a Measurement

F. Evaluating your Measurement

G. IMS Utilities

III. Uploading Data to LIMS

A. Data Upload Procedure

B. View and Verify Data

C. Retrieve Data from LIMS

IV. Important Notes

V. Appendix

A.1 Health, Safety & Environment

A.2 Maintenance and Troubleshooting

B.1 IMS Program Structure

a) IMS Program Structure

b) Communication and Control Setup

B.2 Motion Control Setup

C.1 Hardware

VI. Credits

VII. Archived Versions

Introduction

Thermal conductivity is the coefficient of proportionality relating conductive heat flow to a thermal gradient. The Teka Berlin TK04 system determines thermal conductivity based on a transient heat flow method. A line source is heated with constant power while recording source temperature. Thermal conductivity is calculated from the resulting heating curve.
The TK04 uses two types of probes: the full-space (VLQ) needle probe for soft sediments and the half-space (HLQ) probe for hard rock samples. Measuring a single point in a section takes ~54 min per sample, allowing for 3 replicates to be taken. A self-test including a drift study is conducted at the beginning of each cycle. To measure thermal conductivity the heater circuit is closed and the temperature rise in the probe is recorded. Thermal conductivity is calculated from the rate of temperature rise while the heater current is flowing. The thermal conductivity of each sample is the average of three repeated measurements for the full-space method and three to six repeated measurements for the half-space method.
Precision of the method is better than 2%, based on extended evaluation of the method; accuracy is about 5% because of random variations of thermal conductivity in natural materials.

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