Customizing Temperatures - Cannon TE-1500 Instruction & Operation Manual

Adjusting Trimpots

Customizing Temperatures

EXAMPLE
EXAMPLE procedure
IMPORTANT
Revision 1.1b—November, 1998; CANNON
Figure 9: TE-1500 trimpots
With the TA - FIXED dial set at its midpoint (500), use the small screw-
driver included with the TE-1500 to adjust the trimpot corresponding to
the selected temperature. Turning the trimpot clockwise will increase
temperature; turning the trimpot counterclockwise will decrease bath
temperature. Allow several minutes between adjustments for the tempera-
ture in the bath to stabilize. Verify the bath temperature using a calibrated
reference thermometer. Continue adjusting the trimpot until the equilib-
rium temperature matches the value on the T - SELECT dial.
If one of the temperatures listed on the T - SELECT dial is never used,
that setting may be used to set a permanent custom temperature setting.
This procedure works only if the custom temperature is relatively close to
the preset temperature.
If the temperature +10°C is never used, and the temperature +5°C is used
frequently, the TE-1500 can be customized to reach a temperature of
+5°C automatically.
To change the +10°C setting to consistently reach a temperature of +5°C:
1. Turn the T - SELECT dial to +10°C.
2. Turn the TA - FIXED dial to the midpoint (500).
3. Move the TA-SELECT switch to the right (the VARIABLE position).
4. Adjust the +10°C trimpot until the thermometer in the TE-1500 Bath
indicates that the Bath is now controlling at +5°C (this may also
involve adjusting the TA - FIXED dial).
5. Make sure to note for future reference that this temperature setting
has been changed from the preset temperature shown on the T-
SELECT dial to the customized temperature.
Whenever the customized temperature is the desired temperature for a
test, make sure the TA-SELECT switch is in the VARIABLE position.
® TE-1500 Thermoelectric Constant Temperature Bath
CANNON
2139 High Tech Road • State College, PA 16803 • USA
® Instrument Company
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