TCi Operator Manual
37
Step 5 – Check the Get Ambient Temperature for Each Measurement option.
Step 6 – Enter the minimum measurement period.
The measurement period is the interval between tests beyond the cooling time. The time must be
entered in hh:mm:ss format (for a period of ten minutes, enter 00:10:00). Leave the field empty if
tests can be performed as soon as the cooling time is complete.
Step 7 – Enter the number of measurements.
For unlimited measurements, enter 0.
Step 8 – Enter the number of sensors.
Enter 0 for any number of sensors.
Step 9 – Enter the number of samples/sensor/measurement.
This is the number of times each sensor fires during an interval. If one sensor is left for a long
test, multiple samples can be taken in each interval so an RSD can be calculated for each
interval.
Step 10 – Select the user prompts.
Do not turn on the measurement prompts.
Step 11 – Click the Save button.
Step 12 – Prepare the sample.
Step 13 – Perform the test.
4.11
Contact Agents
The C-Therm TCi sensor surface is made of a solid material. It can measure liquids, powders,
and pastes by direct contact with these materials. However, when it comes in contact with solids,
there is always a contact resistance. Using a contact agent minimizes the contact resistance.
For optimal performance and convenience, C-Therm has built into each factory calibration the
error corrections for the material groups provided with the following contact agents as listed.
Not
using a contact agent when testing with these material groups will likely result in less than
optimal results.
Three standard contact agents are currently offered with the C-Therm TCi system: Water, Glycol,
and Wakefield 120 thermal grease. Contact agents have correction factors to prevent them from
negatively affecting measurements.
Material
Type
Contact Agent
Liquids
None
Powders
Foams
Polymers
-20 to 5°C
3 drops glycol
5 to 70°C
3 drops water
70 to 200°C
Wakefield 120 thermal grease*
Ceramics
Metals
* Use Wakefield 120 thermal grease with absorbent or porous materials.
Summary of Contents for TCi
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