9
• Press the
button. The
units
digit will
flash, indicating that the value can be
changed (data may be entered).
5. Entering the
unit
digit
• Press the
or
button to enter the
units
place digit of the offset value being
entered. Press the
button. The tip offset
data are entered into memory, the station
switches to normal operation, and temper-
ature will be controlled using the entered
value.
NOTE:
The allowable ranges for offset values are: –50° to
+50°C.; –90° to +90°F. If a value outside these ranges is
entered, the
hundreds
digit will blink, indicating that the
system has reverted to the beginning of the mode and
the procedure must be repeated from the beginning.
1. Insert the control card into the slot in the
station.
• The station will default to the temperature
setting mode. Set the temperature at
400°C. (750°F.).
2. Press the
button on the front panel
and hold for one second.
• This will set the station to the data entry
mode. The existing offset will be displayed.
3. Measure the tip temperature.
4. Enter the offset value
• Determine the difference, if any, between
400°C. (750°F.) and the measured tip
temperature. Record this value. See the
example following to determine what value
to enter as the offset for that particular tip.
• Enter the actual offset value into system
memory by following the procedure given
for Method 1, above.
●
●
●
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Method 2. How to enter the tip offset value into the Hakko 941
This method requires measuring the tip temperatures with a tip thermometer and is recommended
for the most accurate process control.
Press the button once.
Press the button once.
NOTE:
Allow the tip temperature to become stable. During offset
data entry mode, the tip temperature is controlled using
an offset value of 0. The flashing value displayed is not
meaningful.
EXAMPLE:
If the measured temperature is 395°C. (740°F.), the
difference between the set temperature is +5°C. (+10°F.)
(the tip is five (ten) degrees too cool) and the offset is
thus +5°C. (+10°F.). If the measured temperature is
405°C./760°F., the difference between the set temper-
ature is –5°C. (–10°F.) (the tip is five (ten) degrees too
hot) and the offset is –5°C. (–10°F.).
