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8.3. TK04 System
EQ U I P ME N T
ODP purchased the TK04 system in late 1995 and deployed it permanently on the
ship on Leg 168 (1996). The system was to replace the ailing Thermcon-85 device,
built at the Woods Hole Oceanographic Institution (WHOI) and in service on the
ship for many years. Currently, both systems are available to the user on the ship.
The TK04 was built by the Berlin company Teka based on an apparatus that had
been developed at the Technische Universität Berlin. It was used successfully for
thousands of measurements on material from the Continental Deep Drilling
Program (KTB). The TK04 consists of
• automatic self-test, heating, and measurement unit TK04,
• full-space (VLQ) and half-space (HLQ) needle probes,
• vice and manual hydraulic pump for half-space contact measurements on
rocks, and
• Macor standards for both types of needle probes.
The TK04 measuring system features a self-test at the beginning of each
measuring cycle (including probe number validation), registration of the source
temperature and its drift, and calculation of the heating power used.
The following executable programs are used to operate the system:
• TKMEAS.EXE to acquire time-temperature data series (creating *.DWL
files),
• TKEVA for standard (<5% uncertainty) or special (<2% uncertainty) reevaluation of data, creating short *.DAT or long *.ERG lists and
parameter files, and
• TKGRAPH to display all solutions and assess the quality of the
calculated solutions.
In addition, the following parameter files are used:
• TKMEAS.MNU, a list of standard menu settings for TKMEAS.EXE,
• *.INI, list of parameters for probes, where “*” is the number engraved on
the probe, and
• TKEVA.INI, list of user-modifiable parameters required for
TKEVA.EXE.
Multiple measurements can be taken under identical conditions. The instrument
cycles through the measurements automatically, creating files with the userdefined root name (e.g., Core-Section-Interval; only six characters allowed) and a
two-digit serial number incrementing by one for each measurement within a cycle.
The following files are created by the TK04 system:
• <Rootname-SerialNo>.DWL, (if “Save data” was selected); contains
measurement parameters and temperature-time series (raw data), required
for extended evaluations; it is not necessary, but strongly recommended,
to save the heating curves for routine evaluation. These files allow later
extended evaluation and graphical display of the solutions.
• <Rootname->.LST, short list of results from evaluating one root-namebatch of *.DWL files using either the “special approximation method”
8—8
PP Handbook , Peter Blum , November, 1997