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Red
Slide button
Slide pole
Ring plate
Sensor
Blue
Terminal
Tip
Fresh solder
Measuring point
Grounded outlet
Receptacle (for soldering iron)
Ground clip
Measuring point
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Monitor Output
The HAKKO 192 converts the measurements to DC voltage values and
outputs these values from the monitor output terminal. See the
"Specifications" table on the previous page for voltage values.
Be careful when using monitor output; as measurements are converted to
DC voltage values, monitor output may not match the values shown on the
display. There will also be some error on the part of the instrument to
which these values are output.
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Ground Terminal (GND)
The ground terminal (GND) is connected to the ground line for the
soldering iron outlet on the HAKKO 192. It is used when deriving the
values for V1 and R1 during measurement of the difference in potential
and the resistance, respectively, between the tip and ground.
When using a type of soldering iron that is grounded with an alligator clip,
connect the clip to the GND terminal.
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Maintenance and Calibration
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Replacement Parts
To replace the conduction plate, remove the set screws.
The life of the temperature sensor will vary depending on the temperature
at which measurements are made and the type of solder and flux being
used. In general, temperature sensors can be used for 50 measurements.
Replace the sensor as soon as the measuring point wears out.
HAKKO can calibrate the instrument for a nominal fee. Please contact
your dealer for further information.
Part No.
191-212
B1752
B1754
B1950
B2705
Part Name
Temperature sensors (10 pcs.)
Conduction plate
Ground clip
Conduction wire
Midzet fuse (5A)
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Procedure
①
Preparations
1. Attach the ring plate to the slide pole.
2. Move the slide button in the direction indicated by the arrow in the figure
below, then attach the sensor as shown in the drawing (place the red end
on the side with the red dot, and blue end on the other side of the
terminal).
3. Insert the power plug into the outlet and turn the power switch on.
●
Be sure to insert the power plug into a grounded (3-hole) outlet.
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Power will be supplied to the outlet on the HAKKO 192 only when the
unit is plugged in and the power switch is turned on.
9. When the display has stabilized, read the value. (V2)
If the soldering iron power plug uses an alligator clip rather than a 3-
prong grounded plug, connect it to the GND terminal with the ground clip
and then perform measurements.
10.Subtract V1 from V2 to derive the difference in potential between
the tip and the and the ground.
V = V2 - V1
②
Measuring the tip temperature
③
Measuring the difference in potential between tip
and ground
1. Press the
select switch.
2. Clean the tip and coat it with fresh solder
3. Quickly place the tip on the measuring point on the temperature sensor.
As shown in the figure below, place the tip properly on the measuring
point in accordance with the type of tip being used, as if you were
soldering that point.
4. The value shown in the display will increase; wait two (2) to three (3)
seconds for it to stabilize.
④
Measuring the resistance between tip and ground
1. Press the OHM select switch. Using the same procedure as when
measuring the difference in potential, measure the values for R1 and R2
(which correspond to V1 and V2 in that procedure).
2. Subtract R1 from R2 to derive the resistance between the tip and
ground. R = R2 - R1
⑤
Over range display
1. Plug in the soldering iron by inserting the plug on the power cord into the
receptacle on the HAKKO 192.
2. Wait until the tip reaches the set temperature. If the soldering iron is a
variable tip temperature model, set temperature to the maximum.
3. Press the mV select switch.
4. Using the ground clip, connect the ground terminal (GND) on the HAKKO
192 to the conduction plate.
5. Read the value on the display. (V1)
6. Disconnect the ground clip.
7. Clean the tip and coat it with fresh solder.
8. Place a tiny bead of solder in the center of the conduction plate and heat
the bead until the solder has completely melted.
TEMP
The over range code is . An over range occurs during temperature
measurement when the temperature sensor is not attached, and during
voltage and resistance measurement when the tip is not in contact with the
conduction plate.
Note:
When using fine tips at low temperatures and the solder is hardly melted
on the conduction plate, use the attached conduction wire. Measuring
with conduction plate meets MIL standard; always use the conduction
plate except for the above written cases.
1. Remove the two (2) screws which secure the conduction plate.
2. Remove the conduction plate.
3. Secure the conduction wire with the same screws in place of the
conduction plate.
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Optional Parts
Part No.
A1310
B1753
C1220
Part Name
Temperature probe (for soldering pot)
Monitor cord
Temperature probe (for automatic machine)
Conduction plate
