Keysight U1586B Operating Instructions Manual

Keysight U1586B Temperature Adapter

Operating Instructions

The U1586B temperature adapter is designed for Keysight handheld digital multimeter (DMM), Keysight
handheld oscilloscope, and K-Type thermocouple.

OUTPUT: mV output proportional
to inside battery. °C and °F as the
position of slider switch

Slider switch:

• OFF: inside battery level

• °C: 1 mV/°C

• °F: 1 mV/°F

INPUT: K-type thermocouple
with miniature connector

Assistance

For technical assistance, contact your nearest Keysight Sales Ofce or visit the Keysight website at

www.keysight.com/nd/assist for further information.

Safety Informations

Please use the Keysight U1586B temperature adapter only as specied in this manual. Otherwise, the protec­tion provided may be impaired. Refer to the safety information below.

WARNING

To avoid possible electric shock, personal injury or damage to this instrument and ensure that you use the
adapter safely, follow these guidelines:

- Do not use the adapter if it is damaged. Before you use the adapter inspect the case. Look for cracks or

missing
plastic. Pay particular attention to the insulation surrounding the connectors.

- Do not touch thermocouple probe to hazardous voltage.

- Do not operate the adapter around explosive gas, vapor or dust.

- When servicing the adapter, use only specied replacement parts.

- Removed all connections as battery replacement

- Use caution when working above 30 V ac rms, 42 V peak or 60 V dc. Such voltage pose a shock hazard.

- Avoid working alone.

- Do not operate the adapter as the cover removed or loosened.

CAUTION

To avoid possible damage to the temperature adapter or to the equipment under test, follow below guide­lines:

- Do not connect output banana plugs to any power source.

- Use the proper terminals, function, and range for your measurements.

AC - Alternating Current Caution, risk of danger (Refer to the user’s

Conform to European Union Directives

IEC/ EN 61010-12001 (2nd Edition)

and service guide for details)

Double Insulation DC - Direct Current

Ground

Battery Voltage Test

Set the adapter’s slider switch to OFF position, the output will output the proportional mili-volt to represent
the battery voltage inside. The proportional scale is DC 9.9 mV per 1 V of battery voltage inside. The operat­ing voltage suggested is up to 7.5 V of battery. So, always make sure the mili-volt output is up to 74.2 mV

before temperature measurement.

Battery Voltage

Output of U1586B

Introductions

The U1586B temperature adapter accepts any K-Type thermocouple with miniature connector and converts
it to 1 milli-volt per degree (Celsius or Fahrenheit).

Standard Item Purchased Checklist

The following items are included when you make a purchase:

• U1586B temperature adapter

• K-Type bead probe

• Operation Instructions sheet (this sheet)

10 V 9 V 8 V 7.5 V

99.0 mV 89.1 mV 79.2 mV 74.2 mV

General Specications

Specications Temperature Adapter

Operating Temperature 0 °C to 55 °C (14 °F to 131 °F)

Storage Temperature –20 °C to 70 °C (–4 °F to 158 °F)

Relative Humidity Max 80% RH for temperature up to 35 °C decreasing linearly to 50% RH at 55 °C

Battery life 1600 hours approximately based on alkaline battery

Altitude 2000 meters

EMC Compliance Susceptibility and Emissions: Commercial Limits per EN61326-1

Dimensions (HxWxD) 31 mm (H) x 59 mm (W) x 113.5 mm (L)

Weight 120 grams

Power Supply:

Single standard 9 V Battery can use Alkaline or Carbon-zinc.

Battery Types ANSI/NEDA IEC

Alkaline 1604A 6LR61

Carbon-zinc 1604D 6F22

Electrical Specications

Range Resolution

–50 °C ~ 1000 ° C 1 mV/°C –50 ~ –21 °C 2.5% + 2 °C

–58 °F ~ 1832 °F 1 mV/°F –58 ~ –5.8 °F 2.5% + 3.6 °F

± (% of reading + no. of least signicant digits) at 23 °C ± 5 °C, with

relative humidity less than 80% R.H.

–20 ~ 350 °C 0.5% + 2 °C

351 ~ 500 °C 1.75% + 2 °C

501 ~ 1000 °C 2% + 2 °C

–4 ~ 662 °F 0.5% + 3.6 °F

664 ~ 932 °F 1.75% + 3.5 °F

933 ~ 1832 °F 2% + 3.6 °F

Accuracy

• The accuracy specications does not include the error of the probe or the digital multimeter, and this
adapter should be stabilized for at least one hour on the DUT to be measured. Please refer to the probe
accuracy specications for additional details.

• Accuracy enhancement for 351 °C ~ 500 °C, subtract 3 degrees from the reading. The accuracy is now

0.75% ±2 °C.

• Accuracy enhancement for 663 °F ~ 932 °F, subtract 5.4 degrees from the reading. The accuracy is now

0.75% ±3.6 °F.

Operation

Follow the procedures provided to select Celsius or Fahrenheit temperature unit in proportion to mili-volt
output using slider switch:

1. Ensure the temperature adapter is stabilized in operating environment.

2. Switch the adapter slider’s switch to set °C or °F.

3. Plug the banana plugs into V/COM terminals on multimeter.

4. Set the DC voltage measurement and adequate range on multimeter or oscilloscope in use.

5. Plug the miniature K-Type thermocouple probe into adapter.

6. Observe the DC mili-volt on a multimeter which is proportional to the temperature. (1 mV is 1 °C or ° F)

7. Select a better resolution to 0.1 mV on a multimeter if want to see the difference to 0.1 degree.

Calibration Equipment

The pre-calibration guide lines are shown as follows:

• Be sure you are a qualied person to perform the calibration

• The environment should be 23 °C ±2 °C and the relative humidity (RH) shall be < 80%.

The test equipment requirements listed in table below or equivalents are required to perform the calibration
and performance verication test procedures. Alternative equipment may be used as long as the accuracy is as
good as or better than the specications listed.

Standard Source Operating Range

K-Type Thermocouple

Simulator or Calibrator

Multimeter DC 1000.0 mV ≤ ±0.1% Keysight-U1251A, U1252A or Keysight-34405A

Ice Point Reference
Chamber

Adjustment Procedures

The following procedures are to be performed in sequence after another to ensure a correct calibration se­quence.

Celsius Temperature Offset Adjustment

1. Set the operating range of the digital multimeter to DC 1000.0 mV.

2. Set the reference standard to 0 ºC.

3. Switch the adapter’s slider to the ºC 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 digital

multimeter.

6. Wait for at least 30 seconds for the signal conversion from ºC to Volts to stabilize at the multimeter

display.

7. Observe that the multimeter reading should display a voltage of 0.0 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 VR3 (refer to Figure 1 for the location of VR3 in the adjustment diagram) and carefully
adjust the variable resistor using a small Phillips tip screwdriver until the display of the multimeter
meets the required reading of 0.0 mV ± 0.2 mV.

10. After performing the adjustment of VR3, remember to replace the rear cover of the adapter or
proceed to the next calibration process.

–50 ~ 1000 °C
–58 ~ 1832 °F

–5 ~ 38 °C

Accuracy
Required

≤ ±0.1% + 1 °C CL-300-1000C from OMEGA or Fluke-5520A

≤ ±0.1% + 0.5 °C

TRCIII from OMEGA or Fluke -5520A

Recommended

Equipment

Celsius Temperature Gain Adjustment

1. Set the operating range of the digital multimeter to DC 1000.0 mV.

2. Set the reference standard to 300 ºC.

3. Switch the adapter’s slider to the ºC 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 digital

multimeter.

6. Wait for at least 30 seconds for the signal conversion from ºC to Volts to stabilize at the multimeter

display.

7. Observe that the multimeter reading should display a voltage of 300.0 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 VR1 (refer to Figure 1 for the location of VR1 in the adjustment diagram) and carefully
adjust the variable resistor using a small Phillips tip screwdriver until the display of the multimeter
meets the required reading of 300.0 mV ± 0.2 mV.

10. After performing the adjustment of VR1, remember to replace the rear cover of the adapter or
proceed to the next calibration process.

Fahrenheit Temperature Offset Adjustment

1. Set the operating range of the digital multimeter to DC 1000.0 mV.

2. Set the reference standard to 32 ºF.

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 digital

multimeter.

6. Wait for at least 30 seconds for the signal conversion from ºC to Volts to stabilize at the multimeter

display.

7. Observe that the multimeter reading should display a voltage of 32.0 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 VR4 (refer to Figure 1 for the location of VR4 in the adjustment diagram) and carefully
adjust the variable resistor using a small Phillips tip screwdriver until the display of the multimeter
meets the required reading of 32.0 mV ± 0.2 mV.

10. After performing the adjustment of VR4, remember to replace the rear cover of the adapter or
proceed to the next calibration process.

VR3: To adjust °C
offset values

VR4: To adjust °F
offset values

VR2: To adjust °F
gain values

Miniature
connector for
Temperature
source

VR1: To adjust °C
gain values

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 qualied personnel.

To avoid electrical shock or damage to the adapter, do not get water inside the case .

Banana Ends to be

plugged into a
multi-meter

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 specied 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 specied 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.

© Keysight Technologies 2009-2017
Edition 3, November 2017

Printed in Malaysia

U1586-90101

www.keysight.com