Hantek HT824 Use and care manual

HT824
Multifunction Process Calibrator
Calibration Manual
V 1.1

Index
Introduction................................................................................................................. 1
Safety Information......................................................................................................1
Required Equipment..................................................................................................2
Lower Display Voltage (V) Measurement Calibration.......................................... 3
Lower Display Voltage (mV) Measurement Calibration....................................... 4
Lower Display Current (mA) Measurement Calibration....................................... 5
Lower Display Thermocouple Measurement Calibration.....................................6
Lower Display Resistance Measurement Calibration.......................................... 7
Lower Display Voltage (V) Source Calibration.................................................... 11
Lower Display Voltage (mV) Source Calibration.................................................12
Lower Display Current (mA) Source Calibration.................................................13
Lower Display Thermocouple (TC) Source Calibration..................................... 14
Lower Display Resistance (Ω) Source Calibration............................................. 15
Upper Display Voltage (V) Measurement Calibration........................................ 17
Upper Display Current (mA) Measurement Calibration..................................... 19
Upper Display Current (LOOP) Measurement Calibration................................21

HT824 Calibration Manual
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1
Introduction
Warning
The information provided in this manual is for the use of qualified personnel
only. Do not perform the calibration procedures described in this manual
unless you are qualified to do so.
This Calibration Manual provides the following information for the Hantek824
Multifunction Process Calibrator (also referred to as "the Calibrator" ):
Safety Information
Warnings
To avoid possible electric shock or personal injury:
• Follow all safety procedures for the test and calibration equipment you use.
• Examine the Calibrator before use. DO NOT use the Calibrator if it looks
damaged.
• Do not use the Calibrator if it operates abnormally. Protection may be
impaired.
• Never touch the probes to a voltage source when the test leads are lugged
into the current terminals.
• Select the proper function and range for each measurement.
• Disconnect the test leads before changing to another measure or source
function.
• Use caution when working above 30 V, or 24mA. Such voltages pose a shock
hazard.
• Connect the common lead (COM) before connecting the live test lead. When
disconnecting test leads, disconnect the live test lead first.
• Do not operate the Calibrator around explosive gas, vapor, or dust.
• Make sure the battery door is closed and latched before you operate the
Calibrator.
• During calibration, use only specified calibration equipment listed in Table 1-3.

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Required Equipment
Equipment required to perform the procedures in this manual are identified in
Table 1-3.
Table 1. Required Equipment for Lower Measurement Calibration
Equipment
Minimum Specifications
DC voltage Source
Range: 0 V to 30.0000 V
Resolution: 0.0005 V
Accuracy: 0.02 % rd + 2
DC milivoltage Source
Range: -20 mV to 100.0000 mV
Resolution: 0.0005 mV
Accuracy: 0.02 % rd + 2
DC Current Source
Range: 0 mA to 30.0000 mA
Resolution: 0.0005 mA
Accuracy: 0.02 % rd + 2
Standard Resistance Box
Accuracy: 0.01 Ω
Table 2. Required Equipment for Lower Source Calibration
Equipment
Minimum Specifications
Voltmeter
Range: 0 V to 20.000 V
Accuracy: 0.01 %
Milivoltmeter
Range: -20 mV to 100.00 mV
Accuracy: 0.01 %
Ammeter
Range: 0 mA to 30.000 mA
Accuracy: 0.01 %
Ohmmeter
Range: 0 Ω to 5000.0 Ω
Accuracy: 0.01 %
Table 3. Required Equipment for Upper Measurement Calibration
Equipment
Minimum Specifications
DC voltage Source
Range: 0 V to 30.0000 V
Resolution: 0.0005 V
Accuracy: 0.02 % rd + 2
DC Current Source
Range: 0 mA to 30.0000 mA
Resolution: 0.0005 mA
Accuracy: 0.02 % rd + 2
Analog Current Output Device

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Lower Display Voltage (V) Measurement Calibration
1. Turn on the Calibrator, press to get to the measure mode, then
press until MEAS and VOL appear on the lower display.
2. Set up the standard voltage output source to output 0.000V; Connect positive
electrode to terminal V/Ω and connect negative electrode to terminal COM.
- +
Figure 1
3. When the Calibrator display readings stable, if the reading is not 0.000V, please
press and simultaneously until the Calibrator display
0.000V, then readings are within the limit -0.003V to +0.003V.
4. Set up the voltage output source to output 20.000V.
5. When the Calibrator display readings stable, if the reading is not 20.000V,
please press and simultaneously until the Calibrator
display 20.000V, then readings are within the limit 19.997 V to 20.003V.

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Lower Display Voltage (mV) Measurement Calibration
1. Turn on the Calibrator, press to get to the measure mode, then press
until MEAS and MVOL appear on the lower display.
2. Set up the standard voltage output source to output 0.000mV; Connect positive
electrode to terminal V/Ω and connect negative electrode to terminal COM.
- +
Figure 2
3. When the Calibrator display readings stable, if the reading is not 0.000mV,
please press and simultaneously until the Calibrator
display 0.000mV, then readings are within the limit -0.004mV to +0.004mV.
4. Set up the voltage output source to output 80.000mV.
5. When the Calibrator display readings stable, if the reading is not 80.000mV,
please press and simultaneously until the Calibrator
display 80.000mV, then readings are within the limit 79.996 mV to 80.004 mV.

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Lower Display Current (mA) Measurement Calibration
1. Turn on the Calibrator, press to get to the measure mode, then press
until MEAS and CURR appear on the lower display.
2. When the Calibrator display readings stable, if the reading is not 0.000mA,
please press and simultaneously until the Calibrator
display 0.000mA, then readings are within the limit -0.003mA to +0.003mA.
3. Set up the standard current output source to output 22.000mA. Connect
positive electrode to terminal mA+/3W and connect negative electrode to terminal
mA-/4W.
- +
Figure 3
4. When the Calibrator display readings stable, if the reading is not 22.000mA,
please press and simultaneously until the Calibrator
display 20.000mA, then readings are within the limit 21.997mA to 22.003mA.

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Lower Display Thermocouple Measurement Calibration
1. Turn on the Calibrator, press to get to the measure mode, then press
until MEAS and TC appear on the lower display.
2. Set up the standard voltage output source to output -10.000mV; Connect a
Type-J thermocouple lead between the TC jack on the top of the Calibrator and
the TC jack on the voltage output source.
- +
Figure 4
3. When the Calibrator display readings stable, if the reading is not -10.000mV,
please press and simultaneously until the Calibrator
display -10.000mV, then readings are within the limit -10.004mV to -9.996mV.
4. Set up the voltage output source to output 70.000mV.
5. When the Calibrator display readings stable, if the reading is not 70.000mV,
please press and simultaneously until the Calibrator
display 70.000mV, then readings are within the limit 69.996 mV to 70.004 mV.
NOTE When calibrate thermocouple measurement, must calibrate mV voltage
first.

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7
Lower Display Resistance Measurement Calibration
1. Turn on the Calibrator, press to get to the measure mode, then press
until MEAS and RTD appear on the lower display.
2. Use or to get to the 2W mode.
3. Make the connections shown in Figure 5. When the Calibrator display readings
stable, if the reading is not 0Ω, please press and
simultaneously until the Calibrator display 0Ω, then resistance readings are within
the 0Ω to 0.03Ω.
Connect these two terminals by a DMM Test Leads with 2 banana plugs
Figure 5
4. Set up the standard resistance box to source 400Ω and connect it to terminal
V/Ω and COM. When the Calibrator display readings stable, if the reading is not
400Ω, press and simultaneously until the Calibrator display
400Ω, then resistance readings are within the 399.7Ω to 400.3Ω.

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Set up the standard resistance box to output 4000.0Ω resistance. When the
Calibrator display readings stable, if the reading is not 4000.0Ω, press
and simultaneously until the Calibrator display 4000.0Ω,
then resistance readings are within the 3999.7Ω to 4000.3Ω.
5. Use or to get to the 3W mode.
6. Make the connections shown in Figure 6. When the Calibrator display readings
stable, if the reading is not 0Ω, please press and
simultaneously until the Calibrator display 0Ω, then resistance readings are within
the 0Ω to 0.03Ω.
Connect these three terminals by a DMM Test Leads with 3 banana plugs
Figure 6
7. Set up the standard resistance box to source 400Ω and connect it to terminal
V/Ω,COM and mA+/3W . When the Calibrator display readings stable, if the
reading is not 400Ω, press and simultaneously until the
Calibrator display 400Ω, then resistance readings are within the 399.7Ω to
400.3Ω.