HT61 TRMS Digital Multimeter with 6000 Counts and Current Up To 10a User Manual

61/ 62 TRMS Digital Multimeter with 6000 Counts and Current Up To 10a
User Manual

PRECAUTIONS AND SAFETY MEASURES

In this manual, the word “instrument” generically indicates models HT61 and HT62 if not specified otherwise. The instrument has been designed in compliance with standard IEC/EN61010-1 relevant to electronic measuring instruments. For your safety and in order to prevent damaging the instrument, please carefully follow the procedures described in this manual and read all notes preceded by symbols with the utmost attention. Before and after carrying out measurements, carefully observe the following instructions:

• Do not carry out any measurements in humid environments.
• Do not carry out any measurements in case gas, explosive materials or flammables are present, or in dusty environments. Avoid any contact with the circuit being measured if no measurements are being carried out.
• Avoid any contact with exposed metal parts, with unused measuring probes or circuits
• Do not carry out any measurement in case you find anomalies in the instrument such as deformation, breaks, substance leaks, absence of display on the screen, etc.
• Pay special attention when measuring voltages higher than 20V, since a risk of electrical shock exists.

In this manual, and on the instrument, the following symbols are used:
Warning: observe the instructions given in this manual; improper use could damage the instrument or its components.
Double-insulated meter
AC voltage
DC voltage or current
Connection to earth

PRELIMINARY INSTRUCTIONS

• This instrument has been designed for use in environments of pollution degree 2.
• It can be used for VOLTAGE and CURRENT measurements on installations with CAT IV 600V and CAT III 1000V.
• We recommend following the normal safety rules devised by the procedures for carrying out operations on live systems and using the prescribed PPE to protect the user against dangerous currents and the instrument against incorrect use.
• In case the lack of indication of the presence of voltage may represent a danger for the operator, always carry out a continuity measurement before carrying out the measurement on the live system, in order to confirm the correct connection and condition of the leads.
• Only the leads supplied with the instrument guarantee compliance with the safety standards. They must be in good condition and be replaced with identical models, when necessary.
• Do not test circuits exceeding the specified voltage limits.
• Do not perform any test under environmental conditions exceeding the limits indicated in § 6.2.1.
• Check that the battery is correctly inserted.
• Make sure that the LCD display and the rotary switch indicate the same function.

DURING USE

Please carefully read the following recommendations and instructions:
CAUTION
Failure to comply with the caution notes and/or instructions may damage the instrument and/or its components or be a source of danger for the operator.

• Before activating the rotary switch, disconnect the test leads from the circuit being measured.
• When the instrument is connected to the circuit being measured, do not touch any unused terminal.
• Do not measure resistance in case external voltages are present; even if the instrument is protected, an excessive voltage may cause malfunction.
• While measuring, if the value or the sign of the quantity being measured remains unchanged, check if the HOLD function is enabled.

AFTER USE

• When the measurement is complete, set the rotary switch to OFF to switch off the instrument.
• If the instrument is not to be used for a long time, remove the batteries.

DEFINITION OF MEASUREMENT (OVERVOLTAGE) CATEGORY

Standard “IEC/EN61010-1: Safety requirements for electrical equipment for measurement, control, and laboratory use, Part 1: General requirements”, define what the measurement category, commonly called overvoltage category, is. § 6.7.4: Measured circuits, reads:
(OMISSIONS)
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 on installations inside buildings. 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 a 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 standard requires that the transient withstand capability of the equipment is made known to the user.

GENERAL DESCRIPTION

The instrument carries out the following measurements:

• DC Voltage
• AC TRMS voltage
• DC/AC voltage with low impedance (LoZ)
• DC Current
• AC TRMS Current
• Resistance and Continuity test
• Diode test Capacitance (HT62)
• Current and voltage frequency
• Duty Cycle
• Temperature with K probe (HT62)

Each of these functions can be selected by means of the appropriate switch. The instrument is also equipped with function keys (see § 4.2), an analog bar graph, and a backlight. The instrument is also equipped with an Auto Power OFF function (which can be disabled), which automatically switches off the instrument 15 minutes after the last time a function key was pressed or the rotary switch was turned. To switch on the instrument again, turn the rotary switch.

MEASURING AVERAGE VALUES AND TERMS VALUES

Measuring instruments of alternating quantities are divided into two big families:

• AVERAGE-VALUE meters: instruments measuring the value of the sole wave at the fundamental frequency (50 or 60 Hz).
• TRMS (True Root Mean Square) VALUE meters: instruments measuring the TRMS value of the quantity being tested.

With a perfectly sinusoidal wave, the two families of instruments provide identical results. With distorted waves, instead, the readings shall differ. Average-value meters provide the RMS value of the sole fundamental wave; TRMS meters, instead, provide the RMS value of the whole wave, including harmonics (within the bandwidth of the instrument). Therefore, by measuring the same quantity with instruments from both families, the values obtained are identical only if the wave is perfectly sinusoidal. In case it is distorted, TRMS meters shall provide higher values than the values read by average-value meters.

DEFINITION OF TRUE ROOT MEAN SQUARE VALUE AND CREST FACTOR

The root means the square value of current is defined as follows: “In a time equal to a period, an alternating current with a root means the square value of 1A intensity, circulating on a resistor, dissipates the same energy that, during the same time, would be dissipated by a direct current with an intensity of 1A”. This definition results in the numeric expression:
The root means the square value is indicated with the acronym RMS.
The Crest Factor is defined as the relationship between the Peak Value of a signal and its RMS value: CF (G)= This value changes with the signal waveform, for a purely sinusoidal wave it is √2 =1.41. In case of distortion, the Crest Factor takes higher values as wave distortion increases.

PREPARATION FOR USE

INITIAL CHECKS

Before shipping, the instrument has been checked from an electric as well as mechanical point of view. All possible precautions have been taken so that the instrument is delivered undamaged.
However, we recommend generally checking the instrument in order to detect possible damage suffered during transport. In case anomalies are found, immediately contact the forwarding agent.
We also recommend checking that the packaging contains all components indicated in § 6.3.1. In case of discrepancy, please contact the Dealer. In case the instrument should be returned, please follow the instructions given in § 7.

INSTRUMENT POWER SUPPLY

The instrument is supplied with 1x9V alkaline battery type IEC 6F22, included in the package. When the battery is flat, the symbol “ ” appears on the display. o replace/insert the battery, see § 6.1.

STORAGE

In order to guarantee precise measurement, after a long storage time under extreme environmental conditions, wait for the instrument to come back to normal condition (see § 6.2.1).

NOMENCLATURE

DESCRIPTION OF THE INSTRUMENT

CAPTION:

1. LCD display
2. RANGE key
3. MAX MIN key
4. Hz% key
5. REL key
6. MODE key
7. HOLD key| 8. Rotary selector switch
9. Input terminal 10A
10. Input terminal
VHz%Ω (HT61) or
Hz%V Ω (HT62).
11. Input terminal mAΩA
12. Input terminal COM
---|---

DESCRIPTION OF FUNCTION KEYS

HOLD key
Pressing the HOLD key freezes the value of the measured quantity on the display. After pressing this key, the message “HOLD” appears on the display. Press the HOLD  key again to exit the function. Press and hold the HOLD key for a long time in order to activate/deactivate the display’s backlight. This function is activated in any position of the rotary switch and is automatically deactivated after approx. 10s.

RANGE key
Press the RANGE key to activate the manual mode and to disable the Auto range function. The symbol “AUTO” disappears from the upper left part of the display. In manual mode, press the RANGE key to change the measuring range: the relevant decimal point will change its position. The RANGE key is not active in the Frequency measurement and Duty cycle test and in positions  and (HT62) of the rotary switch. In Auto range mode, the instrument selects the most appropriate ratio for carrying out the measurement. If the reading is higher than the maximum measurable value, the indication “O.L” appears on the display. Press and hold the RANGE key for more than 1 second to exit the manual mode.

MAX MIN key
Pressing the MAX MIN key once activates the detection of maximum and minimum values of the quantity being tested. Both values are constantly updated and are displayed cyclically every time the same key is pressed again. The display shows the symbol associated with the selected function: “MAX” for maximum value and “MIN” for minimum value. The MAX MIN key is not active when the HOLD function is activated. Pressing the MAX MIN key the “AUTO” and bargraph disappear. The MAX MIN key is not active in the Frequency measurement and Duty cycle test and in positions  and (HT62) of the rotary switch. Press and hold the MAX MIN key for more than 1 second or turn the selector to exit the function.
Hz% key
Press the Hz% key to select frequency measurement and duty cycle test in positions V Hz%, 10AHz%, mA (AC), μA (AC), and Hz% of the rotary switch. The frequency range is different in the different positions.
REL key
Press the REL key to activate relative measurement. The instrument zeroes the display and saves the displayed value as a reference value to which subsequent measurements will be referred. The symbol “REL” appears on the display. This function is not active for the following measurements: Hz, Duty Cycle, Continuity Test, Diode test, and Temperature (HT62). Pressing the REL key the “AUTO” and bargraph disappears Press the key again to exit the function.
MODE key
Pressing the MODE key allows selecting a double function on the rotary switch. In particular, it is active in positions Ω and Ω (HT62) to select diode test, continuity test, capacitance measurement (HT62), and resistance measurement, in position °C°F (HT62) to select temperature measurement in °C or °F, in positions V Hz% and LoZV for AC or DC voltage selection and mA , μA to select AC or DC measurements
LoZ feature
This model permits to performance of the AC/DC voltage measurement with a low input impedance in a way to avoid the wrong readings due to stray voltage in capacitive coupled.
CAUTION
Inserting the instrument between phase and ground conductors, the RCDs protection devices can be tripping out during the test. For phase-PE voltage measurement after an RCD device preliminarily connect the test leads between phase and neutral cables at least for 5s, then perform the phase measurement to avoid unexpected trips-out
Disabling the Auto Power Off function
The instrument switches off automatically approximately 15 minutes after it was last used. The symbol “ ” appears on the display. To disable the Auto Power Off function, proceed as follows:
** Switch off the instrument (OFF)
** Press and hold the MODE key, and switch on the instrument by turning the rotary switch. The symbol “ ” disappears from the display
**** Switch off and then on again the instrument to enable the function.

OPERATING INSTRUCTIONS

DC VOLTAGE MEASUREMENT

CAUTION
The maximum input DC voltage is 1000V. Do not measure voltages exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

1. Select position V Hz%
2. Press the MODE key until the symbol “DC” is displayed
3. Insert the red cable into the input terminal VHz% Ω (HT61) or **Hz%V Ω (HT62) and the black cable into the input terminal COM.**
4. Position the red lead and the black lead respectively in the spots with the positive and negative potential of the circuit to be measured (see Fig. 2). The display shows the value of voltage.
5. If the display shows the message “O.L”, select a higher range.
6. When the symbol “ – ” appears on the instrument’s display, it means that voltage has the opposite direction with respect to the connection in Fig. 2.
7. To use the HOLD, RANGE, MAX MIN, and REL functions, see § 4.2.

AC VOLTAGE MEASUREMENT

CAUTION
The maximum input AC voltage is 1000V. Do not measure voltages exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

1. Select position V Hz%
2. Press the MODE key until the symbol “AC” is displayed
3. Insert the red cable into the input terminal VHz% Ω (HT61) or **Hz%V Ω (HT62) and the black cable into the input terminal COM.**
4. Position the red lead and the black lead respectively in the spots with the positive and negative potential of the circuit to be measured (see Fig. 3). The display shows the value of voltage.
5. If the display shows the message “O.L”, select a higher range.
6. Press the Hz% key to select measurements “Hz” or “ % ” in order to display the values of frequency and duty cycle of input voltage. The bar graph is not active in these functions.
7. To use the HOLD, RANGE, MAX MIN, and REL functions, see § 4.2.

AC/DC VOLTAGE MEASUREMENT WITH LOW IMPEDANCE (LOZ)

CAUTION
The maximum input AC/DC voltage is 600V. Do not measure voltages exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

1. Select position LoZV
2. Press the MODE key until the symbol “DC” is displayed
3. Insert the red cable into the input terminal VHz% Ω (HT61) or **Hz%V Ω (HT62) and the black cable into the input terminal COM.**
4. Position the red lead and the black lead respectively in the spots with the positive and negative potential of the circuit to be measured (see Fig. 4). for AC voltage measurement or in the spots with the positive and negative potential of the circuit to be measured (see Fig. 2) for DC voltage measurement. The display shows the value of voltage.
5. If the display shows the message “O.L”, select a higher range.
6. When the symbol “ – ” appears on the instrument’s display, it means that voltage has the opposite direction with respect to the connection in Fig. 2.
7. To use the HOLD, RANGE, MAX MIN, and REL functions, see § 4.2.

FREQUENCY AND DUTY CYCLE MEASUREMENT

CAUTION
The maximum input AC voltage is 1000V. Do not measure voltages exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

1. Select position Hz%.

2. Press the Hz% key to select measurements “Hz” or “%” in order to display the values of frequency and duty cycle of input voltage.

3. Insert the red cable into the input terminal VHz% Ω (HT61) or **Hz%V Ω (HT62) and the black cable into the input terminal COM.**

4. Position the red lead and the black lead respectively in the spots of the circuit to be measured (see Fig. 5). The value of frequency (Hz) or duty cycle (%) is shown on
   the display. The bar graph is not active in these functions.

5. If the display shows the message “O.L”, select a higher range.

6. To use the HOLD function, see § 4.2.

RESISTANCE MEASUREMENT AND CONTINUITY TEST

CAUTION
Before attempting any resistance measurement, cut off the power supply from the circuit to be measured and make sure that all capacitors are discharged, if present.

1. Select position Ω (HT61) or Ω (HT62).
2. Insert the red cable into the input terminal VHz % Ω (HT61) or Hz%V Ω (HT62) and the black cable into the input terminal COM.
3. Position the test leads in the desired spots of the circuit to be measured (see Fig. 6). The display shows the value of resistance.
4. If the display shows the message “O.L”, select a higher range.
5. Press the MODE key to select “ ” measurement, relevant to the continuity test, and position the test leads in the desired spots of the circuit to be measured.
6. The value of resistance (which is only indicative) is displayed in Ω and the instrument sounds if the value of resistance is <100 Ω
7. To use the HOLD, RANGE, MAX MIN, and REL functions, see § 4.2.

DIODE TEST

CAUTION
Before attempting any resistance measurement, cut off the power supply from the circuit to be measured and make sure that all capacitors are discharged, if present.

1. Select position Ω (HT61) or Ω (HT62).
2. Press the MODE key to select “ ” measurement.
3. Insert the red cable into input terminal VHz%Ω (HT61) or Hz%V **Ω (HT62) and the black cable into input terminal COM.**
4. Position the leads at the ends of the diode to be tested (see Fig. 7), respecting the indicated polarity. The value of directly polarized threshold voltage is shown on the display.
5. If the threshold value is equal to 0mV, the P-N junction of the diode is short-circuited.
6. If the display shows the message “O.L”, the terminals of the diode are reversed with respect to the indication given in Fig. 7, or the P-N junction of the diode is damaged.

CAPACITANCE MEASUREMENT (HT62)

CAUTION
Before carrying out capacitance measurements on circuits or capacitors, cut off the power supply from the circuit being tested and let all capacitance in it be discharged. When connecting the multimeter and the capacitance to be measured, respect the correct polarity (when required).

1. Select position Ω
2. Press the MODE key until the symbol “nF” is displayed.
3. Insert the red cable into input terminal **Hz%V Ω and the black cable into input terminal COM.**
4. Press the REL button before carrying out measurements.
5. Position the leads at the ends of the capacitor to be tested, respecting, if necessary, the positive (red cable) and negative (black cable) polarity (see Fig. 8). The display shows the value of capacitance.
6. The message “O.L.” indicates that the value of capacitance exceeds the maximum measurable value.
7. To use the HOLD function, see § 4.2.

TEMPERATURE MEASUREMENT WITH K PROBE (HT62)

CAUTION
Before attempting any temperature measurement, cut off the power supply from the circuit to be measured and make sure that all capacitors are discharged, if present.

1. Select position **°C°F**
2. Press the MODE key until the symbol “°C” or “°F” is displayed.
3. Insert the provided adapter into input terminals **Hz%V Ω (polarity +) and COM** (polarity -) (see Fig. 9)
4. Connect the provided K-type wire probe or the optional K-type thermocouple (see § ) to the instrument by means of the adapter, respecting the positive and negative polarity on it. The display shows the value of temperature.
5. The message “O.L.” indicates that the value of temperature exceeds the maximum measurable value.
6. To use the HOLD function, see § 4.2.

DC CURRENT MEASUREMENT

CAUTION
Maximum input DC current is 10A (input 10A) or 600mA (input mAμA). Do not measure currents exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

1. Cut off power supply from the circuit to be measured.
2. Select position μA , mA , or 10AHz%.
3. Insert the red cable into input terminal 10A or into input terminal mAμA and the black cable into input terminal COM.
4. Connect the red lead and the black lead in series to the circuit whose current you want to measure, respecting polarity and current direction (see Fig. 10).
5. Supply the circuit to be measured. The display shows the value of the current.
6. If the display shows the message “O.L”, the maximum measurable value has been reached.
7. When the symbol “ – ” appears on the instrument’s display, it means that the current has the opposite direction with respect to the connection in Fig. 10.
8. To use the HOLD, RANGE, MAX MIN, and REL functions, see § 4.2.

AC CURRENT MEASUREMENT

CAUTION
Maximum input AC current is 10A (input 10A) or 600mA (input mAμA). Do not measure currents exceeding the limits given in this manual. Exceeding voltage limits could result in electrical shocks to the user and damage to the instrument.

1. Cut off power supply from the circuit to be measured.
2. Select position μ A , mA , or 10AHz%.
3. Press the MODE key to select the “AC” measurement.
4. Insert the red cable into input terminal 10A or into input terminal mAμA and the black cable into input terminal COM.
5. Connect the red lead and the black lead in series to the circuit whose current you want to measure, respecting polarity and current direction (see Fig. 11).
6. Supply the circuit to be measured. The display shows the value of the current.
7. If the display shows the message “O.L”, the maximum measurable value has been reached.
8. Press the Hz% key to select measurements “Hz” or “%” in order to display the values of frequency and duty cycle of input current. The bar graph is not active in these functions.
9. To use the HOLD, RANGE, MAX MIN, and REL functions, see § 4.2.

MAINTENANCE

CAUTION

• Only expert and trained technicians should perform maintenance operations. Before carrying out maintenance operations, disconnect all cables from the input terminals.
• Do not use the instrument in environments with high humidity levels or high temperatures. Do not expose to direct sunlight.
• Always switch off the instrument after use. In case the instrument is not to be used for a long time, remove the battery to avoid liquid leaks that could damage the instrument’s internal circuits.

REPLACING THE BATTERIES AND THE INTERNAL FUSES

When the LCD display shows the symbol “” ”, it is necessary to replace the battery. Replacing the battery

1. Position the rotary switch to OFF and remove the cables from the input terminals.
2. Turn the fastening screw of the battery compartment cover from position “ ” to position “ ” and remove it.
3. Remove the battery and insert a new battery of the same type (see § ), respecting the indicated polarity.
4. Restore the battery compartment cover into place and turn the fastening screw from position “ ” to position “ ”.
5. Do not scatter old batteries into the environment. Use the relevant containers for disposal.

Replacement of fuses

1. Position the rotary switch to OFF and remove the cables from the input terminals.
2. Turn the fastening screw of the battery compartment cover from position “ ” to position “ ” and remove it.
3. Remove the damaged fuse and insert a new one of the same type (see § ), respecting the indicated polarity.
4. Restore the battery compartment cover into place and turn the fastening screw from position “ ” to position “ ”.

CLEANING THE INSTRUMENT

Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.

END OF LIFE

WARNING: the symbol on the instrument indicates that the appliance and its accessories must be collected separately and correctly disposed of.

TECHNICAL SPECIFICATIONS

TECHNICAL CHARACTERISTICS

Accuracy calculated as [%reading + (num. digits*resolution)] at 18°C ÷28°C <75%HR
DC Voltage

Range| Resolution| Accuracy| Input impedance| Protection against overcharge
---|---|---|---|---
600.0mV| 0.1mV| ±(0.8%rdg + 5dgt)| >10MW| 1000VDC/ACrms
6,000V| 0,001V
60.00V| 0.01V
600.0V| 0.1V
1000V| 1V

AC TRMS Voltage

Range| Resolution| *Accuracy ()| Protection against overcharge
---|---|---|---
(50Hz ¸ 60Hz)| (61Hz ¸ 400Hz)**
6.000V| 0.001V| ±(1.0%rdg + 8dgt)| ±(2.0%rdg + 8dgt)| 1000VDC/ACrms
60.00V| 0.01V
600.0V| 0.1V
1000V| 1V| ±(1.2%rdg + 8dgt)| ±(2.5%rdg + 8dgt)

(*) Accuracy specified from 5% to 100% of the measuring range, Input impedance: > 10M Ω Crest factor: ≤3 (up to 500V), ≤1.5 (up to 1000V)
DC/AC TRMS voltage with low impedance (LoZ)

Range| Resolution| Accuracy

(50 ¸ 400Hz)

| Input impedance| Protection against overcharge
---|---|---|---|---
600.0mV(*)| 0.1mV| ±(3.0%rdg + 40dgt)| approx. 3kW| 600VDC/ACrms
6.000V| 0.001V
60.00V| 0.01V
600.0V| 0.1V
600V| 1V

(*) DC only
DC Current

Range| Resolution| Accuracy| Protection against overcharge
---|---|---|---
600.0mA| 0.1mA| ±(1.0%rdg + 3dgt)| Quick fuse 800mA/1000V
6000mA| 1mA
60.00mA| 0.01mA
600.0mA| 0.1mA
6.000A| 0.001A| ±(1.5%rdg + 3dgt)| Quick fuse 10A/1000V
10.00A (*)| 0.01A

(*) 20A for max 30s with not declared accuracy
AC TRMS Current

Range| Resolution| *Accuracy ()**

(40Hz ¸ 400Hz)

| Protection against overcharge
---|---|---|---
600.0mA| 0.1mA| ±(1.5%rdg + 8dgt)| Quick fuse 800mA/1000V
6000mA| 1mA
60.00mA| 0.01mA
600.0mA| 0.1mA
6.000A| 0.001A| ±(2.0%rdg + 8dgt)| Quick fuse 10A/1000V
10.00A (**)| 0.01A

(*) Accuracy specified from 5% to 100% of the measuring range, () 20A for max 30s with not declared accuracy
Diode test**

Resistance and Continuity test

Range| Resolution| Accuracy| Buzzer| Protection against overcharge
---|---|---|---|---
600.0W| 0.1W| ±(1.0%rdg + 4dght)| <100W| 1000VDC/ACrms
6.000kW| 0.001kW
60.00kW| 0.01kW
600.0kW| 0.1kW
6.000MW| 0.001MW
60.00MW| 0.01MW| ±(2.0%rdg + 10dgt)

Frequency (electronic circuits)

Range| Resolution| Accuracy| Protection against overcharge
---|---|---|---
10Hz ¸ 400Hz| 0.001Hz| ±(1.5%rdg + 5dgt)| 1000VDC/ACrms

Sensitivity: 15Vrms (voltage), 10Arms (current)
Frequency (electronic circuits)

Range| Resolution| Accuracy| Protection against overcharge
---|---|---|---
9.999Hz| 0.001Hz| **** ±(0.1%rdg + 8dgt)| 1000VDC/ACrms
99.99Hz| 0.01Hz
999.9Hz| 0.1Hz
9.999kHz| 0.001kHz
99.99kHz| 0.01kHz
999.9kHz| 0.1kHz
9.999MHz| 0.001MHz
40.00MHz| 0.01MHz

Sensitivity: >0.8Vrms (@ 20% ÷80% duty cycle) and f<100kHz; >5Vrms (@ 20% ÷80% duty cycle) and f>100kHz
Duty Cycle

Temperature with K probe (HT62)

Range| Resolution| Accuracy| Protection against overcharge
---|---|---|---
40.00nF| 0.01nF| ±(3.5%rdg + 50dgt)| 1000VDC/ACrms
400.0nF| 0.1nF| ** ±(3.5%rdg + 4dgt)
4,000mF| 0,001mF
40.00mF| 0.01mF
400.0mF| 0.1mF
1000mF| 1mF| ±(5.0%rdg + 5dgt)
Range| Resolution| Accuracy (*)| Protection against overcharge**
---|---|---|---
-45.0°C ÷ 400.0°C| 0.1°C| ±(3.5%rdg + 5°C)| 1000VDC/ACrms
401°C ÷ 750°C| 1°C
-50.0°F ÷ 752.0°F| 0.1°F| ±(3.5%rdg + 9°F)
752°F ÷ 1382°F| 1°F

Reference standards

General characteristics
Mechanical characteristics

Power supply

F800mA/1000V, 6 x 32mm (input mAA)

Display

sign and point, backlight, and bar graph.
Sampling frequency:| 2 times/s

ENVIRONMENT

Environmental conditions for use

This instrument satisfies the requirements of the Low Voltage Directive 2014/35/EU (LVD) and of EMC Directive 2014/30/EU
This instrument satisfies the requirements of European Directive 2011/65/EU (RoHS) and 2012/19/EU (WEEE)

ACCESSORIES

Accessories provided

• Pair of test leads with 2/4mm tips
• Adapter + K-type wire probe (HT62)
• Battery
• Carrying bag
• User manual

Optional accessories

• K-type probe for air and gas temperature (HT62) -Code TK107
• K-type probe for semisolid substance temperature (HT62) -Code TK108
• K-type probe for liquid substance temperature (HT62) -Code TK109
• K-type probe for surface temperature (HT62) -Code TK110
• K-type probe for surface temperature with 90° tip (HT62) Code -TK111

ASSISTANCE

WARRANTY CONDITIONS

This instrument is warranted against any material or manufacturing defect, in compliance with the general sales conditions. During the warranty period, defective parts may be
replaced. However, the manufacturer reserves the right to repair or replace the product. Should the instrument be returned to the After-sales Service or to a Dealer, transport will be at the Customer’s charge. However, shipment will be agreed upon in advance. A report will always be enclosed in a shipment, stating the reasons for the product’s return. Only use the original packaging for shipment. Any damage due to the use of non-original packaging material will be charged to the Customer. The manufacturer declines any responsibility for injury to people or damage to property.
The warranty shall not apply in the following cases:

• Repair and/or replacement of accessories and battery (not covered by warranty).
• Repairs that may become necessary as a consequence of incorrect use of the instrument or due to its use together with non-compatible appliances.
• Repairs that may become necessary as a consequence of improper packaging.
• Repairs may become necessary as a consequence of interventions performed by unauthorized personnel.
• Modifications to the instrument were performed without the manufacturer’s explicit authorization.
• Use not provided for in the instrument’s specifications or in the instruction manual.

The content of this manual cannot be reproduced in any form without the manufacturer’s authorization.
Our products are patented and our trademarks are registered. The manufacturer reserves the right to make changes in the specifications and prices if this is due to improvements in technology.

ASSISTANCE

If the instrument does not operate properly, before contacting the After-sales Service, please check the conditions of the battery and cables and replace them, if necessary. Should the instrument still operate improperly, check that the product is operated according to the instructions given in this manual. Should the instrument be returned to the After-sales Service or to a Dealer, transport will be at the Customer’s charge. However, shipment will be agreed upon in advance. A report will always be enclosed in a shipment, stating the reasons for the product’s return. Only use the original packaging for shipment; any damage due to the use of non-original packaging material will be charged to the Customer.

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