User manual
Figure 1: U1586B Adjustment Diagram
Always remember to adjust the gain of the temperature in Celsius before Fahrenheit.
Fahrenheit Temperature Gain Adjustment
1. Set the operating range of the digital multimeter to DC 1000.0 mV.
2. Set the reference standard to 572 ºF (300 ◦C).
3. Switch the adapter’s slider to the ºF position.
4. Connect the K-type miniature connector from the reference standard into the input of U1586B adapter.
5. Plug in the banana ends of the adapter’s output to the V and COM input terminals of the multimeter.
6. Wait for at least 30 seconds for the signal conversion from ºF to Volts to stabilize at the multimeter
display.
7. Observe that the multimeter reading should display a voltage of 572.0 mV ± 0.2 mV.
8. If the multimeter reading display does not meet the required voltage, unscrew 2 Phillips head screws
at the back panel of the adapter using a Phillips tip screwdriver and remove the rear cover.
9. Look for VR2 (refer to Figure 1 for the location of VR2 in the circuit diagram) and carefully adjust the
variable resistor using a small Phillips tip screwdriver until the display of the multimeter meets the
required reading of 572.0 mV ± 0.2 mV.
10. After performing the adjustment of VR2, remember to replace the rear cover of the adapter.
Maintenance
Repair or service not cover this manual should be performed only by qualified personnel.
To avoid electrical shock or damage to the adapter, do not get water inside the case .
Cleaning
•Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasive or solvents.
Troubleshooting
If the temperature adapter does not perform properly, follow the steps below to identify the problem:
1. Before inspecting the battery voltage, switch the adapter’s slider to OFF position. Replace the battery if
the voltage output ends less than 74.2 mV.
2. Check the K-type thermocouple probe whether has been plugged into adapter or any crack on bead end.
Replace with new one as necessary.
3. Verify that the DC voltage and range on the multimeter is correct.
Never discharge the battery by short battery or reverse polarity in any subjects.
Battery Replacement
The adapter is powered by 9 V battery. Ensure to use specified battery only.
Following is the procedures for battery replacement:
1. Removed all the connections for thermocouple probe and banana plugs.
2. Loose two screw on the bottom case and remove the bottom case.
3. Replace the specified batteries and ensure the polarity of the batteries.
4. The red and black surrounding plastic cases are for “+” and “–” banana plug ends. Please ensure the
polarity and color.
5. Once done place back the bottom case to its original place and tighten the screw.
VR3: To adjust °C
offset values
VR4: To adjust °F
offset values
VR2: To adjust °F
gain values
VR1: To adjust °C
gain values
Miniature
connector for
Temperature
source
Banana Ends to be
plugged into a
multi-meter
U1586-90101
Printed in Malaysia
© Agilent Technologies, Inc. 2009-2010
First Edition, March 30, 2010