Cannon TE-1500, Instruction & Operation Manual

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CANNON
® TE-1500 Thermoelectric Constant Temperature Bath
Revision 1.1b—November, 1998;
CANNON
® Instrument Company
2139 High Tech Road • State College, PA 16803 • USA
Figure 9: TE-1500 trimpots
Adjusting 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.
Customizing Temperatures
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.
EXAMPLE
If the tempe10°C is never used, and the tempe5°C is used
frequently, the TE-1500 can be customized to reach a temperature of
+5°C automatically.
EXAMPLE procedure
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.
IMPORTANT
Whenever the customized temperature is the desired temperature for a
test, make sure the
TA-SELECT switch is in the VARIABLE position.