Itm HT9021 User manual

©Copyright HT ITALIA 2012 Release EN 1.04 - 19/04/2012
ENGLISH
User manual
www. .com [e-mail]1.800.561.8187

HT9021
EN - 1
Contents:
1. SAFETY PRECAUTIONS AND PROCEDURES ..........................................................2
1.1. Preliminary ........................................................................................................................ 2
1.2. During use......................................................................................................................... 3
1.3. After use............................................................................................................................ 3
1.4. Measuring (overvoltage) categories definitions................................................................. 3
2. GENERAL DESCRIPTION ...........................................................................................4
2.1. TRMS and Mean value measuring instruments ................................................................ 4
2.2. True Root Mean Square value and Crest Factor definitions ............................................. 4
3. PREPARATION FOR USE ...........................................................................................5
3.1. Initial.................................................................................................................................. 5
3.2. Power supply..................................................................................................................... 5
3.3. Calibration ......................................................................................................................... 5
3.4. Storage.............................................................................................................................. 5
4. OPERATING INSTRUCTIONS.....................................................................................6
4.1. Instrument description....................................................................................................... 6
4.1.1. Command description................................................................................................................. 6
4.1.2. Alignment marks......................................................................................................................... 6
4.2. Function key description.................................................................................................... 7
4.2.1. H key........................................................................................................................................... 7
4.2.2. key ........................................................................................................................................ 7
4.2.3. MODE key .................................................................................................................................. 7
4.2.4. MAX/MIN key.............................................................................................................................. 7
4.2.5. Hz% key...................................................................................................................................... 7
4.2.6. PEAK/REL key ........................................................................................................................... 7
4.3. Functions of rotary switch description ............................................................................... 8
4.3.1. AC Voltage measurement .......................................................................................................... 8
4.3.2. DC Voltage measurement .......................................................................................................... 9
4.3.3. Resistance measurement......................................................................................................... 10
4.3.4. Continuity test and Diode test................................................................................................... 10
4.3.5. Capacitance measurement....................................................................................................... 12
4.3.6. Temperature measurement ...................................................................................................... 13
4.3.7. AC and DC Current measurement ........................................................................................... 14
4.3.8. Frequency and Duty cycle measurement................................................................................. 14
5. MAINTENANCE .........................................................................................................16
5.1. General informations....................................................................................................... 16
5.2. Battery replacement ........................................................................................................ 16
5.3. Cleaning .......................................................................................................................... 16
5.4. End of life ........................................................................................................................ 16
6. TECHNICAL SPECIFICATIONS ................................................................................17
6.1. Characteristics................................................................................................................. 17
6.1.1. Safety........................................................................................................................................ 18
6.1.2. General data............................................................................................................................. 18
6.2. Environmental conditions ................................................................................................ 19
6.2.1. Climatic conditions.................................................................................................................... 19
6.3. Standard accessories...................................................................................................... 19
6.4. Optional accessories....................................................................................................... 19
7. SERVICE....................................................................................................................20
7.1. Warranty conditions......................................................................................................... 20
7.2. Service ............................................................................................................................ 20
www. .com [e-mail]1.800.561.8187

HT9021
EN - 2
1. SAFETY PRECAUTIONS AND PROCEDURES
This clamp complies with IEC/EN61010-1. For your own safety and in order to avoid
damaging the instrument, you’re recommended to keep to the instructions contained in this
manual and read carefully all the notes preceded by the symbol .
Take extreme care for the following conditions while measuring:
•Do not measure voltage or current in humid or wet environment.
•Do not use the meter in presence of explosive gas (material), combustible gas
(material), steam or dust.
•Insulate yourself from the object to be tested.
•Do not touch exposed metal (conductive) parts such as test lead ends, sockets, fixing
objects, circuits, etc.
•If you detect anomalies of testing end (metal part) and attachment of the meter such as
breakages, deformations, foreign substances, no display, etc., do not take any
measurement.
•Measuring voltage over 20V as it might cause human body electricity conduction.
The followings symbols are used on meter and in this manual:
Caution: refer to the instruction manual. An incorrect use may damage the tester
or its components
High Voltage ranger: electrical shock risk
Double insulated instrument
AC Voltage or Current
DC Voltage or Current
Ground reference
1.1. PRELIMINARY
•This apparatus has been designed for use in an environment of pollution degree 2.
Indoor use.
•It measures CURRENT and VOLTAGE on CAT IV 600V and CAT III 1000V plants. For
measurement categories please see § 1.4.
•You must comply with the usual safety regulations aimed at protecting you against the
dangerous electric current and protecting the instrument against an incorrect operation.
•Only the leads supplied with the instrument guarantee compliance with the safety
standards. They must be in good conditions and they must be replaced, if necessary,
with an identical model.
•Do not test or connect to any circuit whose voltage or current exceeds the specified
overload protection.
•Make sure that the batteries are installed correctly.
•Before connecting the test probes to the installation, check that the function selector is
positioned on the required measurement.
•Make sure that the LCD and the range indicator show the same as the function
desired.
www. .com [e-mail]1.800.561.8187

HT9021
EN - 3
1.2. DURING USE
Always keep to the instructions contained in this manual.
CAUTION
Non compliance with the CAUTIONs and/or the instructions may damage
the tester and/or its components or injure the operator.
•Before changing the switch position, take off the clamp jaw from the tested conductor
or the electrical circuit in order to avoid any accident
•When the clamp is connected to the circuits to be tested, never touch unused terminals
•When testing resistors, do not add voltage. Although there is a protection circuit,
excessive voltage would cause malfunctioning
•Before measuring current, remove the voltage-resistance test leads
•When measuring current, any strong current close to the clamp jaw will affect the
accuracy
•When measuring current, always put the tested conductor in the middle of the clamp
jaw in order to obtain a more accurate reading
•If the reading value or the sign indication remains unchanged during the measurement,
check if the HOLD function is active
1.3. AFTER USE
•Once the measurements are completed, turn the rotary switch to OFF.
•If you expect not to use the clamp for a long time, remove the battery.
1.4. MEASURING (OVERVOLTAGE) CATEGORIES DEFINITIONS
The norm EN 61010-1: Safety requirements for electrical equipment for measurement,
control and laboratory use, Part 1: General requirements, defines what measuring
category, usually called overvoltage category, is. On § 6.7.4: Measuring circuits, it says:
(OMISSIS)
circuits are divided into the following measurement categories:
•Measurement category IV is for measurements performed at the source of the low-
voltage installation.
Examples are electricity meters and measurements on primary overcurrent protection devices
and ripple control units.
•Measurement category III is for measurements performed in the building installation.
Examples are measurements on distribution boards, circuit breakers, wiring, including cables,
bus-bars, junction boxes, switches, socket-outlets in the fixed installation, and equipment for
industrial use and some other equipment, for example, stationary motors with permanent
connection to fixed installation.
•Measurement category II is for measurements performed on circuits directly
connected to the low voltage installation..
Examples are measurements on household appliances, portable tools and similar equipment..
•Measurement category I is for measurements performed on circuits not directly
connected to MAINS.
Examples are measurements on circuits not derived from MAINS, and specially protected
(internal) MAINS-derived circuits. In the latter case, transient stresses are variable; for that
reason, the norm requires that the transient withstand capability of the equipment is made
known to the user.
www. .com [e-mail]1.800.561.8187

HT9021
EN - 4
2. GENERAL DESCRIPTION
HT9021 meter can perform the herewith measurements:
•DC and AC TRMS Voltage up to 1000V
•DC and AC TRMS Current up to 1000A
•Resistance and continuity test with buzzer
•Capacitance
•Frequency with test lead and jaws
•Duty cycle
•Diode test
•Temperature with type K probe
•AC voltage detection with and without contact with integrated sensor
Each parameter can be selected by rotating the 8 positions switch. To abilitate the hold
function the HOLD key is available. There are also the following keys: “MODE "MAX/MIN",
“Hz%“, “PEAK/REL” and “ ”. For their use please see § 4.2. The selected quantity
appears on a LCD display with indication of measurement units and functions. An
analogical bargraph it is also availbale
2.1. TRMS AND MEAN VALUE MEASURING INSTRUMENTS
Safety testers for alternate parameters are divided into two big families:
•MEAN VALUE instruments: instruments which measure only the value of the wave at
the fundamental frequency (50 or 60 Hz)
•TRUE ROOT MEAN SQUARE instruments, also defined as TRMS: instruments which
measure the true root mean square value of the quantity under test.
In presence of a perfectly sinusoidal wave, both families provide identical results. In
presence of distorted waves the readings are different. Mean value instruments provide
only the value of the fundamental wave while True RMS instruments provide the value of
the entire wave, including harmonics (within the passband of the instrument). Accordingly,
if the same quantity is measured with both kinds of instruments, the measured values are
identical only if the wave is purely sinusoidal. Should it be distorted, True RMS instruments
provide higher values than medium value instruments.
2.2. TRUE ROOT MEAN SQUARE VALUE AND CREST FACTOR DEFINITIONS
The current effective value is defined as follows: “In an interval of time equivalent to a
period, an alternate current with effective value having an intensity of 1A, by passing on a
resistor, disperses the same energy which would be dispersed in the same period of time
by a direct current having an intensity of 1A”. From this definition comes the numerical
expression: G= ∫
+Tt
t
dttg
T
0
0
)(
12The effective value is indicated as RMS (root mean square).
The Crest Factor is defined as the ratio between the Peak Value of a signal and its
effective value: CF (G)=
RMS
p
G
G. This value varies according to the waveform of the signal,
for a purely sinusoidal wave it’s worth 2=1.41. In presence of distortions the Crest Factor
assumes higher values as long as the wave distortion is higher.
www. .com [e-mail]1.800.561.8187

HT9021
EN - 5
3. PREPARATION FOR USE
3.1. INITIAL
The tester has been checked from a mechanical and electrical point of view before
shipment.
Every care has been taken to make sure that the instrument reaches you in perfect
conditions.
However, it’s advisable to make a rapid check in order to detect any damage which may
have occurred in transit. Should this be the case, enter immediately the usual claims with
the carrier.
Make sure that all the accessories listed in § 6.3 are contained in the package. In case of
discrepancies contact Your dealer.
In case of returning of the tester please keep to the instructions given in § 7.
3.2. POWER SUPPLY
The instrument is battery supplied. One battery 9V NEDA 1604 IEC 6F22 JIS 006P is
included in the package. Battery life: about 200 hours.When batteries are low, the symbol
“” appears on the display. Replace them immediately, following the instructions
given in § 5.2.
The instrument disposes of the Auto Power OFF function (not disable) consisting in an
automatic switching off 15 minutes of idleness
3.3. CALIBRATION
The tester complies with the technical features listed in this manual. Its performances are
guaranteed for one year.
3.4. STORAGE
In order to guarantee the accuracy of the measurements, after a period of storage under
extreme environmental condition, wait for the necessary time so that the tester returns to
normal measuring conditions (see environmental specifications, § 6.2.1).
www. .com [e-mail]1.800.561.8187

HT9021
EN - 6
4. OPERATING INSTRUCTIONS
4.1. INSTRUMENT DESCRIPTION
4.1.1. Command description
LEGEND:
1. Inductive clamp jaw
2. LED for AC voltage
detection
3. Jaw trigger
4. Function selector
5. HOLD / key
6. MODE, MAX/MIN,Hz%,
PEAK/REL function keys
7. LCD display
8. VΩCAP Temp input
jack
9. COM input jack
Fig. 1: Instrument description
4.1.2. Alignment marks
Put the conductor within the jaws on intersection of the indicated marks as much as
possible (see Fig. 2) in order to meet the meter accuracy specifications
LEGEND:
1. Alignment marks
2. Conductor
Fig. 2: Alignment marks
www. .com [e-mail]1.800.561.8187

HT9021
EN - 7
4.2. FUNCTION KEY DESCRIPTION
4.2.1. H key
By pushing “H” key the parameter measured value is frozen on the display and the symbol
”HOLD” appears on it.
This mode is disabled by pushing “H” key or moving the rotary switch.
4.2.2. key
Keep pressed the “H” key for the backlight activation. This light could help the operator
reading the display while he’s measuring in dark sites. For sake of battery saving after 10
seconds the light is automiatically switched off.
4.2.3. MODE key
By pushing MODE key the selection of double measured functions which are present at
display is possible. In particular this key is active in ΩCAP position to select among
resistance test, diode test, continuity test and capacitance test, and in Temp position to
select between °C and °F in temperature test and in 60A , 600A ,1000A position to
select between AC or DC current measurements
4.2.4. MAX/MIN key
By pushing MAX/MIN key the parameter maximum and minimum values are measured.
Both values are stored in memory and they can be shown cyclically when pressing “MIN
MAX” key. The display shows the symbol linked to the selected function: “MAX” for
maximum value, the symbol “MIN” for minimum value.
This mode is activated on each measurement except for continuity test, diode test
capacitance test, frequency test and duty cycle test
This mode is disabled keeping pressed MAX/MIN key or moving the rotary switch.
4.2.5. Hz% key
With rotary switch on , 60A , 600A and 1000A positions, the Hz% key permits to
select the frequency test (Hz) or the duty cycle test (%)
4.2.6. PEAK/REL key
With rotary switch on , , CAP and DC current the PEAK/REL key permits to perform
the zeroing of value at display and a relative measurement of the parameter under test.
By pushing PEAK/REL key the instrument takes the actual parameter’s value as on offset
and performs a relative measurement. The relative value is displayed, it’s calculated as
actual value – offset value, the “REL” symbol is shown at display and the bargraph is
disabled.
This mode is disabled for resistance test, continuity test, AC current test, temperature test,
frequency test, duty cycle test and diode test and with MAX/MIN mode activated. This
mode is disabled pressing PEAK/REL key or moving the rotary switch
With rotary switch on 60A , 600A or 1000A positions the PEAK/REL key permits to
activated the maximum peak measurement of AC current (calculated with response time
<10ms). The “P” symbol is shown at display and the value is continuously updated by the
meter.
This mode is disabled pressing PEAK/REL key or moving the rotary switch
www. .com [e-mail]1.800.561.8187

HT9021
EN - 8
4.3. FUNCTIONS OF ROTARY SWITCH DESCRIPTION
4.3.1. AC Voltage measurement
CAUTION
Maximum input for AC Voltage measurements is 1000Vrms. Do not take
any voltage measurement exceeding this limit in order not to risk electrical
shock or damaging the tester
Fig. 3: Taking AC voltage measurements
1. Approach the meter closest to AC source and note the turn on of red LED which is
placed to the bottom of clamp jaws (see Fig. 1 – part 2) which detect the AC voltage
2. Rotate the switch on position
3. Insert the red test lead plug into VΩCAP Temp jack and the black test lead plug
into COM jack (Fig. 3)
4. Connect the two long ends of test leads to the desired circuit, then reading will be
displayed
5. When “O.L." symbol is displayed, the result exceeds the maximum value that the
instrument is capable of measuring
6. For HOLD, MAX/MIN and REL features please refer to § 4.2
CAUTION
•Due to the high input impedance is possible that the meter performs the
zero of the display taking longer
•The possible blinking values shown at display with open input terminals
are not a problem of the meter and these values will not be added to
the measured value
www. .com [e-mail]1.800.561.8187

HT9021
EN - 9
4.3.2. DC Voltage measurement
CAUTION
Maximum input for DC Voltage measurements is 1000V. Do not take any
voltage measurement exceeding this limit in order not to risk electrical
shock or damaging the tester.
Fig. 4: Taking DC voltage measurements
1. Rotate the switch on position
2. Insert the red test lead plug into VΩCAP Temp jack and the black test lead plug
into COM jack (Fig. 4)
3. Connect the two long ends of test leads to the desired circuit, then reading will be
displayed
4. When “O.L." symbol is displayed, the result is over the maximum value that the
instrument is able to measure
5. For HOLD, MAX/MIN and REL features please refer to § 4.2
CAUTION
•Due to the high input impedance is possible that the meter performs the
zero of the display taking longer
•The possible blinking values shown at display with open input terminals
are not a problem of the meter and these values will not be added to
the measured value
www. .com [e-mail]1.800.561.8187

HT9021
EN - 10
4.3.3. Resistance measurement
CAUTION
Before taking any in circuit resistance measurement, remove power from
the circuit to be tested and discharge all the capacitors.
Fig. 5: Taking Resistance measurement
1. Rotate the switch on ΩCAP position
2. Insert the red test lead plug into VΩCAP Temp jack and the black test lead plug
into COM jack (Fig. 5)
3. Connect the two long ends of test leads to the desired circuit, then reading will be
displayed
4. When “O.L.” symbol is displayed, the result under test exceeds the maximum value
that the instrument is capable of measuring
5. For HOLD and MAX/MIN features please refer to § 4.2
4.3.4. Continuity test and Diode test
www. .com [e-mail]1.800.561.8187

HT9021
EN - 11
CAUTION
Before taking any in circuit resistance measurement, remove power from
the circuit to be tested and discharge all the capacitors.
Fig. 6: Taking Continuity test and Diode test
1. Rotate the switch on ΩCAP position
2. Pushing MODE key and select continuity test. The symbol is shown at display
3. Insert the red test lead plug into VΩCAP Temp jack and the black test lead plug
into COM jack and perform continuity test on the object under test (see Fig. 6 – left
side). Buzzer emits sound if the measured resistance value is less about 60Ω
4. Pushing MODE key and select diode test. The “ ”symbol is shown at display
5. Connect the red test leads to the anode of diode on test and the black test lead on the
cathode ones (see Fig. 6 – right side). Reverse position of test leads to reading reverse
polarization voltage
6. The correspondent threshold voltage of P-N junction is showed on display. Bargraph is
disabled in diode test
www. .com [e-mail]1.800.561.8187

HT9021
EN - 12
4.3.5. Capacitance measurement
CAUTION
When testing in-circuit capacitors, turn off the power of the circuit to be tested
and discharge all the capacitors
Fig. 7: Taking Capacitance measurement
1. Rotate the switch on ΩCAP position
2. Pushing MODE key and select capacitance test. The “nF”symbol is shown at display
3. Insert the red test lead plug into VΩCAP Temp jack and the black test lead plug
into COM jack (Fig. 7)
4. Connect the two long ends of test leads to the desired circuit, then reading will be
displayed. Bargraph is disabled in capacitance measurement
5. When “O.L.” symbol is displayed, the result under test exceeds the maximum value that
the instrument is capable of measuring
6. For HOLD and REL features please refer to § 4.2
CAUTION
For readings of capacitance <40nF push PEAK/REL key before making test in
order to improve the measured result
www. .com [e-mail]1.800.561.8187

HT9021
EN - 13
4.3.6. Temperature measurement
CAUTION
Do not allow the temperature sensor to contact a surface that is energized
above 30 V RMS or 60 V DC, such voltages pose a shock hazard
Fig. 8: Taking Temperature measurement
1. Rotate the switch on Temp position
2. Pushing MODE key and select the kind of measure. “°C” or “°K” symbols are shown at
display respectively for Celsius or Farheneit temperature measurements
3. Insert the type K bead probe in VΩCAP Temp and COM inputs terminals using
the standard adapter and observing the correct polarity (see Fig. 8). The temperature
value is shown at display
4. For HOLD and MAX/MIN features please refer to § 4.2
www. .com [e-mail]1.800.561.8187

HT9021
EN - 14
4.3.7. AC and DC Current measurement
CAUTION
Make sure that all the test leads are disconnected from the meter terminals for
current measurement.
Fig. 9: Taking AC and DC current measurements
1. Rotate the switch on 60A , 600A or 1000A position
2. Pushing MODE key and select the kind of measure “AC” or “DC”
3. On DC measure pushing PEAK/REL key to perform the zeroing of residual magnetization
current
CAUTION
On AC measure the possible blinking values shown at display with open input
terminals are not a problem of the meter and these values will not be added
to the measured value.
On DC measurement the zeroing operation of residual magnetization current is
essential to obtain accurate results
4. Put the conductor to be tested inside to the center of clamp jaw to perform accurated
measurements. Consider the notches on jaws as reference (see Fig. 2). The reading
will be displayed
5. On DC current measurement the “-“ symbol at display means that the meter is
connected in the opposite side compared with current direction (see Fig. 9)
6. When “O.L.” symbol is displayed, the result exceeds the maximum value that the
instrument is capable of measuring. Select an higher range
7. For HOLD, MAX/MIN, REL and PEAK features please refer to § 4.2
www. .com [e-mail]1.800.561.8187

HT9021
EN - 15
4.3.8. Frequency and Duty cycle measurement
CAUTION
•On frequency test with test leads the maximum input for AC Voltage
measurements is 1000Vrms. Do not take any voltage measurement
exceeding this limit in order not to risk electrical shock or damage the
tester
•On frequency test with jaws make sure that all the test leads are
disconnected from the meter terminals for current measurement.
Fig. 10: Taking frequency and duty cycle measurements
1. Rotate the switch on position for frequency measurement with test leads or 60A ,
600A or 1000A positions for frequency measurements with jaws
2. Pushing Hz% key the “Hz” symbol for frequency measurement or the “%” symbol for
duty cycle measurement are shown at display
3. Insert the red test lead plug into VΩCAP Temp jack and the black test lead plug
into COM jack (see Fig. 10 – left side) for frequency measurement with test leads.
Open the clamp and put the conductor to be tested in the middle of the clamp jaw (see
Fig. 10 – right side) for frequency measurements with jaws, then reading will be
displayed. Bargraph is disabled in frequency and duty cycle test
4. When “O.L.” symbol is displayed, the result exceeds the maximum value that the
instrument is capable of measuring
5. For HOLD feature please refer to § 4.2
www. .com [e-mail]1.800.561.8187

HT9021
EN - 16
5. MAINTENANCE
5.1. GENERAL INFORMATIONS
1. This digital clamp meter is a precision instrument. Whether in use or in storage, please
do not exceed the specification requirements to avoid possible damages or dangers.
2. Do not place this meter at high temperatures or humidity or expose it to direct sunlight.
3. Be sure to turn off the meter after use. If you expect not to use the tester for a long
time, remove the battery in order to avoid leakages of battery liquid that would damage
the internal parts.
5.2. BATTERY REPLACEMENT
When “ ” appears on the display, replace the battery.
CAUTION
Only expert and trained technicians must perform this operation. Remove
the test leads or the conductor under test before replacing the battery
1. Rotate the switch on OFF.
2. Remove the test leads or the objects to be tested.
3. Remove the screw from the battery cover, and detach the battery cover from the
bottom cover.
4. Remove the battery
5. Replace the battery with a new one same type (see § 6.1.2)
6. Replace the battery cover and screw
7. Use the appropriate battery disposal methods for Your area
5.3. CLEANING
For cleaning the instrument use a soft dry cloth. Never use a wet cloth, solvents or water,
etc.
5.4. END OF LIFE
CAUTION: this symbol indicates that equipment its accessories and battery shall
be subject to a separate collection and correct disposal.
www. .com [e-mail]1.800.561.8187

HT9021
EN - 17
6. TECHNICAL SPECIFICATIONS
6.1. CHARACTERISTICS
Accuracy is calculated as [% rdg + (number of dgt) x resolution]. It is referred to the
following reference conditions: 18°C ÷28°C (65°F ÷83°F), < 75%RH
DC Voltage (Autorange)
Range Resolution Accuracy Input impedance Overload
protection
600.0mV 0.01mV
±(1.0%rdg + 3dgt) 10MΩ1000VDC/ACrms
6.000V 0.001V
60.00V 0.01V
600.0V 0.1V
1000V 1V
The meter emits a “bip-bip” sound with VDC >1000V
AC Voltage TRMS (Autorange)
Range Resolution Accuracy Input
impedance Bandwidh Overload protection
6.000V 0.001V
±(1.0%rdg+4dgt)
(50 ÷60Hz)
±(3.5%rdg+5dgt)
(61 ÷400Hz)
10MΩ50-400Hz 1000VDC/ACrms
60.00V 0.01V
600.0V 0.1V
1000V 1V
Integrated sensor for AC voltage detection: LED turn on for phase-earth voltage > 100V, 50/60Hz
The meter emits a “bip-bip” sound on 1000V range for VAC>770V
Resistance and Continuity test (Autorange)
Range Resolution Accuracy Buzzer Overloadprotection
600.0Ω0.1Ω
±(1.0%rdg+5dgt) ≤60Ω600VDC/ACrms
6.000kΩ0.001kΩ
60.00kΩ0.01kΩ
600.0kΩ0.1kΩ
6.000MΩ0.001MΩ
60.00MΩ0.01MΩ±(2.0%rdg.+10dgt)
Test current of continuity test: < 0.35mA
DC Current
Range Resolution Accuracy (*) Overloadprotection
60.00A 0.01A
±(2.2%rdg.+10dgt)
1000AACrms
600.0A 0.1A
±(2.0%rdg+8dgt)
1000 1A
(*) Referred to cable inside to the center of clamp jaws. Position sensitivity: ±2.0%rdg
AC TRMS Current
Range Resolution Accuracy (*) Bandwidh Overloadprotection
60.00A 0.01A
±(2.2%rdg+12dgt)
50 ÷60Hz
1000AACrms
600.0A 0.1A
±(2.2%rdg+8dgt)
1000A 1A
60.00A 0.01A
±(3.5% rdg+12dgt)
61 ÷400Hz
600.0A 0.1A
±(3.5%rdg+8dgt)
1000A 1A
PEAK function: response time <10ms ; Accuracy PEAK function: ±(5%rdg+10dgt)
(*) Referred to cable inside to the center of clamp jaws. Position sensitivity: ±2.0%rdg
www. .com [e-mail]1.800.561.8187

HT9021
EN - 18
Capacitance (Autorange)
Range Resolution Accuracy Overloadprotection
40.00nF 0.01nF
±(3.5%rdg+40dgt)
600VDC/ACrms
400.0nF 0.1nF
±(2.5%rdg+5dgt)
4.000µF 0.001µF
40.00µF 0.01µF
400.0µF 0.1µF
4000µF 1µF ±(5.0%rdg+5dgt)
Diode test
Range Test current Open voltage
0.9mA typical 2.8VDC
Frequency with test leads (Autorange)
Range Resolution Accuracy Sensitivity Overloadprotection
99.99Hz 0.01Hz
±(1.0%rdg+5dgt) ≥15Vrms 600VDC/ACrms
999.9Hz 0.1Hz
9.999kHz 0.001kHz
60.00kHz 0.01kHz
Input current for frequency measurement with jaws: > 8% selectable full scale
Frequency with jaws (Autorange)
Range Resolution Accuracy Sensitivity Overloadprotection
99.99Hz 0.01Hz
±(1.0%rdg+5dgt) ≥10A (60A)
≥50A(600A) 1000VACrms
999.9Hz 0.1Hz
9.999kHz 0.001kHz
Duty Cycle (Autorange)
Range Resolution Sensitivity Accuracy
0.5% ÷99.0% 0.1% ≥15Vrms ±(1.2%rdg+2dgt)
Pulse width: 100µs ÷100ms ; Pulse frequency: 5.000Hz ÷100.0kHz
Temperature with type K probe (Autorange)
Range Resolution Accuracy (*) Overloadprotection
-20.0 ÷400.0°C 0.1°C ±(2.0%rdg +3°C)
600VDC/ACrms
400 ÷760°C 1°C ±(2.0%rdg +5°C)
-4.0 ÷752.0°F 0.1°F ±(2.0%rdg +6°F)
752 ÷1400°F 1°F ±(2.0%rdg +9°F)
(*) Accuracy of type K probe not considered
6.1.1. Safety
Comply with: IEC/EN 61010-1
Insulation: double insulation
Pollution: Level 2
Max height of use: 2000m (6562 ft)
Installation category: CAT IV 600V, CAT III 1000V to ground,
6.1.2. General data
Mechanical characteristics
Dimensions (L x W x H): 252 x 88 x 44mm ; 10 x 3 x 2 in
Weight (including battery): 442g (16 ounces)
Max conductor size: 45mm (2 in)
www. .com [e-mail]1.800.561.8187

HT9021
EN - 19
Supply
Battery type: 1 battery 9V NEDA 1604 IEC 6F22 JIS 006P.
Low battery indication: “ ” is displayed when the battery level is low
Battery life: about 200 hours
AutoPowerOff: after 15 minutes of idleness
Display
Characteristics: 4 LCD (max 6000 counts), decimal point, unit symbol
indication, bargraph and backlight
Sample rate: 2 times/sec
Conversion mode: TRMS
6.2. ENVIRONMENTAL CONDITIONS
6.2.1. Climatic conditions
Reference temperature: 18°C ÷28°C (65°F ÷83°F)
Operating temperature: 0 ÷ 40 °C (32°F ÷104°F)
Operating humidity: < 75%RH
Storage temperature: -20 ÷ 60 °C (-4°F ÷140°F)
Storage humidity: < 80% RH
This product conforms to the prescriptions of the European directive on low voltage
2006/95/EEC and to EMC directive 2004/108/EEC
6.3. STANDARD ACCESSORIES
•Test leads – Code 4413-2
•Adapter + type K bead probe
•Carrying bag
•User manual
•Battery
6.4. OPTIONAL ACCESSORIES
The herewith type K probes are avaliable:
Model Description
Temperature
range Accuracy
(at 100°C)
Probe length
(mm) Probe diameter (mm)
TK107 Air and gas
temperature -40 ÷800 °C ± 2.2rdg 200 1.5
TK108
Inner temperature of
semisolid
substances
-40 ÷800 °C ± 2.2rdg 200 3
TK109 Inner temperature of
fluids -40 ÷800 °C ± 2.2rdg 200 4
TK110 Surface temperature -40 ÷400 °C ± 2.2rdg 200 5
TK111 Surface temperature
with fixed tip at 90° -40 ÷400 °C ± 2.2rdg 260 5
www. .com [e-mail]1.800.561.8187