HT211 Handheld Multimeter Digital CAT III 600 V Display User Manual

HT211 Handheld Multimeter Digital CAT III 600 V Display

SAFETY PRECAUTIONS AND PROCEDURES

This meter is compliance with safety Standard IEC/EN61010-1 related to electronicmeasuring instruments. For your own safety and to avoid damaging the instrument follow the procedures described in this instruction manual and read carefully all notes preceded by this symbol .

When taking measurements:

•  Avoid doing that in humid or wet places
•  Avoid doing that in rooms where explosive gas, combustible gas, steam or excessive dust is present
•  Keep you insulated from the object under test
•  Do not touch exposed metal parts such as test lead ends, sockets, fixing objects, circuits etc.
•  Avoid doing that if you notice anomalous conditions such as breakages, deformations, fractures, leakages of battery liquid, blind display etc
•  Be particularly careful when measuring voltages exceeding 20V to avoid risks of electrical shocks The following symbols are used:

CAUTION

• refer to the instruction manual an improper use may damage the instrument or its components
• Double insulated meter
• AC Voltage and Current
• DC Voltage and Current
• Ground reference

PRELIMINARY

•  This instrument has been designed for use in environments of pollution degree 2

•  It can be used for VOLTAGE and CURRENT measurements on installations of CAT III600V
  You must comply with the usual safety regulations aimed at protecting you against thedangerous electric current and protecting the instrument against an incorrect operation

•  Only the original test leads supplied along with the instrument guarantee compliancewith the safety standards in force. They must be in a good conditions and, if necessary,replaced with identical ones

•  Do not test nor connect to any circuit exceeding the specified overload protection

•  Do not take measurements under environmental conditions exceeding the limitsindicated in § 6.2.1

•  Make sure that battery is correctly installed

•  Before connecting the test probes to the installation make sure that the rotary selectoris positioned on the right function

•  Make sure that LCD and rotary selector indicate the same function

DURING USE

• Read the recommendations which follow and the instructions in this manual:
•  When changing the range, first disconnect the test leads from the circuit under test in order to avoid any accident
•  When the instrument is connected to measuring circuits never touch any unused terminal
•  When measuring resistors do not add any voltage. Although there is a protection circuit, excessive voltage could cause malfunctioning
•  If during measurement the displayed values remain constant check whether the HOLD function is active

AFTER USE

•  After using the instrument turn it off
•  If you expect not to use the instrument for a long period remove the battery to avoid leakages of battery liquids which may damage its inner components

MEASURING (OVERVOLTAGE) CATEGORIES DEFINITIONS

• The IEC/EN61010-1: Safety requirements for electrical equipment for measurement, control and laboratory use, Part 1: General requirements, gives a definition of measuring category, usually called overvoltage category. § 6.7.4: Measuring circuits:
• Circuits are divided into the following measurement categories:
• Measurement category IV is for measurements performed at the source of the lowvoltage 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 arevariable; for that reason, the norm requires that the transient withstand capability of the equipment is made known to the user

GENERAL DESCRIPTION

The instrument performs the herewith measurements:

•  DC Voltage
•  AC TRMS Voltage
•  DC Current
•  AC TRMS Current
•  Resistance and Continuity test
•  Capacitance
•  Frequency
•  Duty cycle
•  Diode test
•  Temperature with type K probe

All selectable by means of a rotary selector. Also are available the function keys (see §and backlight feature.. The instrument disposes of an Auto Power OFF function consisting in an automatic switching off 15 minutes after last selector rotation.

PREPARATION FOR USE

INITIAL
This instrument was checked both mechanically and electrically prior to shipment. All possible cares and precautions were taken to let you receive the instrument in perfect conditions. Notwithstanding we suggest you to check it rapidly (eventual damages may have occurred during transport – if so please contact the local distributor from whom you bought the item). Make sure that all standard accessories mentioned in § 7.3.1 are included. Should you have to return back the instrument for any reason please follow the instructions mentioned in § 8.
SUPPLY VOLTAGE
The instrument is supplied by 2×1.5V battery type AAA IEC LR03 When battery is low, a “ ” low battery indication is displayed. To replace/insert battery please refer to § 6.2.
STORAGE
After a period of storage in extreme environmental conditions exceeding the limits mentioned in § 7.2.1 let the instrument resume normal measuring conditions before using

NOMENCLATURE

INSTRUMENT DESCRIPTION

DESCRIPTION OF FUNCTION KEYS

HOLD/ key

By pressing HOLD key the measured value is frozen on the display where the symbol “”HOLD”appears. Pressing again HOLD to disable this function and resume normal operation. By pressing the key at least 1s the enable/disable of backlight feature can be performed. This feature is active for any position of rotary selector and automatically disabled after approx. 30s.

RANGE key

By pressing RANGE key, the manual mode is activated and the “AUTO” symbol disappears from the display. Press RANGE cyclically to change the measuring range and fix the decimal point on the display. To restore the autorange keep RANGE key pressed for at least 1s or rotate the selector to another position. This feature is not active in Hz%, / , °C°F and positions. 4.2.3. 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 flashing symbol “MAX MIN” shows the current value on the display. The MAX MIN key is not active when the HOLD function is activated. The function is not active for measurements Hz%, / and . Long pressing the MAX MIN key (or upon switching on the instrument again) allows quitting the function.

MODE key

By pressing MODE key the selection of a double measured functions which are present at display is performed. In particular this key is active in Hz%,  / , °C°F positions and to select between AC or DC voltage/current measurements.
Auto Power OFF
The instrument automatically turns off 15 minutes after last pressure of keys or last selector rotation. To resume operation turn the selector on OFF and turn on the instrument again

OPERATING INSTRUCTIONS

•  Switch on V position. “DC” symbol is displayed
•  Insert the test leads into the jacks, the red plug into mAμAVHz% jack and black plug into COM jack
•  Connect the red and black test leads to the positive and negative poles of the circuit under test respectively (see Fig. 2). The voltage value is displayed
•  If the message “O.L” is displayed the higher range is reached
•  The symbol “-” on the instrument display indicates that voltage has opposite direction with regard to the connection of Fig. 2
•  For use of HOLD, RANGE, MAX MIN functions please refer to § 4.2

AC VOLTAGE MEASUREMENT

•  Switch on V Hz% position
•  Insert the test leads into the jacks, the red plug into mAμAVHz% jack and black plug into COM jack
•  Connect the test leads to the circuit under test (see Fig. 3). The voltage value is displayed
•  If the message “O.L” is displayed the higher range is reached
•  For use of HOLD, RANGE, MAX MIN functions please refer to § 4.2

FREQUENCY AND DUTY CYCLE MEASUREMENTS

•  Switch on V Hz% position
•  Press the MODE key until the symbol “Hz” is shown at display
•  Insert the test leads into the jacks, the red plug into mAμAVHz% jack and black plug into COM jack
•  Connect the test leads to the circuit under test (see Fig. 4). The frequency value is displayed
•  If the message “O.L” is displayed the higher range is reached
•  Press the MODE key until the symbol “%” is shown at display to meaning the Duty Cycle test and connect the meter as frequency measurement. The measured value is displayed
•  For HOLD function please refer to § 4.2

RESISTANCE MEASUREMENTS

•  Switch on  . position. “M” symbol is displayed
•  Insert the test leads into the jacks, the red plug into mAμAVHz% jack and black plug into COM jack
•  Connect the test leads to the circuit under test (see Fig. 5). The resistance value is displayed
•  If the message “O.L” is displayed the higher range is reached
•  For HOLD function refer to § 4.2

DIODE TEST AND CONTINUITY TEST

•  Switch on  position
•  Press the MODE key until the symbol “ ” is shown at display
•  Insert the test leads into the jacks, the red plug into mAμAVHz% jack and black plug into COM jack
•  Connect the test leads to the diode under test observing the proper polarities
• – right part). The threshold voltage value under this situation is displayed
•  If the threshold voltage value is 0V the diode P-N junction is shorted circuit
•  If the message “O.L” is displayed the diode terminals are reversed, the diode P-N junction is damaged
•  Press the MODE key until the symbol “ ” is shown at display to meaning the continuity test and connect the meter as resistance measurement (Fig. 6 – left part). Buzzer emits sound if the measured resistance value is <50
•  For HOLD function refer to § 4.2

CAPACITANCE MEASUREMENT

•  Switch on
•  Press the MODE key until the “nF” symbol is shown at display
•  Insert the test leads into the jacks, the red plug into mAμAVHz% jack and black plug into COM jack
•  Connect the red and black test clamps to the capacitor terminals respecting if necessary the proper polarities (see Fig. 7). The capacitance value is shown on display
•  If the message “O.L” is displayed the higher range is reached
•  For HOLD function refer to § 4.2

TEMPERATURE MEASUREMENT WITH TYPE K PROBE

•  Switch on °C°F position.
•  Press the MODE key selecting the “°C” or “°F” unit
•  Insert the standard adapter accessory into mAμAVHz% jack (+ polarity), and COM jack (- polarity) (see Fig. 8)
•  Connect the standard bead type K probe or the optional type K probe (see § 7.3.2) into the adapter with respect the correct positive and negative polarity then temperature reading is displayed
•  If the message “O.L” is displayed the higher range is reached
•  For HOLD function measurement refer to § 4.2

DC CURRENT MEASUREMENT

•  Power off the circuit under test
•  Switch on “A ”, “mA ” o “10A ”
•  Press the MODE key until the “DC” symbol is shown at display
•  Insert the test leads into the jacks, the red plug into 10A or mAμAVHz% jack and black plug into COM jack
•  Connect the red and the black plugs in series with the circuit whose current is to be measured respecting the polarities (see Fig. 9)
•  Energize the circuit under test. The current value will be displayed.
•  The message “O.L” means that the detected current exceeds the limits.
•  The symbol “-” on the instrument display indicates that voltage has opposite direction with regard to the connection.
•  For use of HOLD, RANGE, MAX MIN functions please refer to § 4.2

AC CURRENT MEASUREMENT

1.  Power off the circuit under test
2.  Switch on “A ”, “mA ” o “10A ”
3.  Insert the test leads into the jacks, the red plug into 10A or mAμAVHz% jack and black plug into COM jack
4.  Connect the red and the black plugs in series with the circuit whose current is to be measured (see Fig. 9)
5.  Energize the circuit under test. The current value will be displayed.
6.  The message “O.L” means that the detected current exceeds the limits.
7.  For use of HOLD, RANGE, MAX MIN functions please refer to § 4.2

MAINTENANCE

GENERAL INFORMATION

While using and storing the instrument, carefully observe the recommendations listed in this manual in order to prevent possible damage or danger during use. 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 instruments internal circuits

BATTERIES AND FUSES REPLACEMENT

When the “ ” indication is displayed the batteries are to be replaced

•  Turn OFF the instrument
•  Disconnect the test leads from the input terminals
•  Remove the two fixing screws and detach the battery cover
•  Replace the batteries with a new one of the same type (refer to § 7.1.2) observing the proper polarities
•  Replace the battery cover and screws
•  Use the appropriate battery disposal methods for your area Fuses replacement
  •  Turn OFF the meter and disconnect the test leads from the input terminals
  •  Remove the two fixing screws and detach the battery cover
  •  Remove the defective fuse and install a new fuse of the same size and rating (see § 7.1.2)
  •  Restore the battery cover

CLEANING

Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.
END OF LIFE
this symbol indicates that equipment, the battery and its accessories shall be subject to a separate collection and correct disposal

TECHNICAL SPECIFICATIONS

• DC Voltage (Autorange)
  Range| Resolution| Accuracy| Input impedance| Overload protection
  ---|---|---|---|---
  400.0mV| 0.1mV| ±(2.0%rdg+8dgt)| ****

10MW

| ****

600VDC/ACrms

4.000V| 0.001V| ****

±(2.0%rdg+3dgt)

40.00V| 0.01V
400.0V| 0.1V
600V| 1V| ±(1.2%rdg+3dgt)

• AC TRMS Voltage (Autorange)
  Range| Resolution| *Accuracy ()**

(50Hz ¸ 400Hz)

| Input impedance| Overload protection
---|---|---|---|---
4.000V| 0.001V| ±(2.0%rdg+5dgt)| ****

10MW

| ****

600VDC/ACrms

40.00V| 0.01V| ±(1.5%rdg+3dgt)
400.0V| 0.1V
600V| 1V| ±(2.0%rdg+4dgt)

• DC Current
  Range| Resolution| Accuracy| Overload protection
  ---|---|---|---
  400.0mA| 0.1mA| ****

±(1.5%rdg+3dgt)

| ****

Fast fuse 500mA / 600V

4000mA| 1mA
40.00mA| 0.01mA
400.0mA| 0.1mA
4.000A| 0.001A| ±(2.5%rdg+5dgt)| Fast fuse 10A / 600V
10.00A| 0.01A

• AC TRMS Current
  Range| Resolution| *Accuracy ()**

(50Hz ¸ 400Hz)

| Overload protection
---|---|---|---
400.0mA| 0.1mA| ±(2.0%rdg+5dgt)| ****

Fast fuse 500mA/600V

4000mA| 1mA| ****

±(2.5%rdg+5dgt)

40.00mA| 0.01mA
400.0mA| 0.1mA
4.000A| 0.001A| ±(3.0%rdg+7dgt)| Fast fuse 10A/600V
10.00A| 0.01A

• Resistance and Continuity test
  Range| Resolution| Accuracy| Buzzer| Overload protection
  ---|---|---|---|---
  400.0W| 0.1W| ±(1.0%rdg + 4dgt)| ****

<50W

| ****

250VDC/ACrms

4.000kW| 0.001kW| ****

±(1.5%rdg + 5dgt)

40.00kW| 0.01kW
400.0kW| 0.1kW
4.000MW| 0.001MW
40.00MW| 0.01MW

• Diode Test
  Feature| Max open voltage| Overload protection
  ---|---|---
  ****| approx 1.5VDC| 250VDC/ACrms
• Frequency (Autorange)
  Range| Resolution| Accuracy| Sensitivity| Overload protection
  ---|---|---|---|---
  9.999Hz| 0.001Hz| ****

±(1.0%rdg + 5dgt)

| ****

5Vrms

| ****

250VDC/ACrms

99.99Hz| 0.01Hz
999.9Hz| 0.1Hz
9.999kHz| 0.001kHz

• Duty cycle (Autorange)
  Range| Resolution| Accuracy| Sensitivity| Overload protection
  ---|---|---|---|---
  0.1%¸99.9%| 0.1%| ±(1.2%rdg + 3dgt)| >1Vrms| 250VDC/ACrms
• Capacitance (Autorange)
  Range| Resolution| Accuracy| Overload protection
  ---|---|---|---
  40.00nF| 0.01nF| ±(5.0%rdg + 35dgt)| ****

250VDC/ACrms

400.0nF| 0.1nF| ****

±(3.0%rdg + 5dgt)

4.000mF| 0.001mF
40.00mF| 0.01mF
400.0mF| 0.1mF| ±(4.0%rdg +5dgt)
4000mF| 1mF| ±(5.0%lrdg +5dgt)

• Temperature with type K probe
  Range| Resolution| *Accuracy ()| Overload protection**
  ---|---|---|---
  -20.0°C ÷ 760.0°C| 0.1°C| ±(3.0%rdg + 5°C)| 250VDC/ACrms
  -4.0°F ÷ 1400.0°F| 0.1°F| ±(3.0%rdg + 9°F)

SERVICE

WARRANTY CONDITIONS

This instrument is guaranteed against material or production defects, in accordance with our general sales conditions. During the warranty period the manufacturer reserves the right to decide either to repair or replace the product. Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the locadistributor from whom you bought it. Do not forget to enclose a report describing the reasons for returning (detected fault). Use only original packaging. Any damage occurredin transit due to not original packaging will be charged anyhow to the customer. The manufacturer will not be responsible for any damage to persons or things.

The warranty doesn’t apply to:

• Accessories and batteries (not covered by warranty)
• Repairs made necessary by improper use (including adaptation to particular applications not foreseen in the instructions manual) or improper combination with incompatible accessories or equipment
• Repairs made necessary by improper shipping material causing damages in transit
• Repairs made necessary by previous attempts for repair carried out by not skilled or unauthorized personnel
• Instruments for whatever reason modified by the customer himself without explicit authorization of our Service Dept
• Faults due to adaptation to a particular application not provided for by the definition of
  the equipment or by the instruction manual The contents of this manual may not be reproduced in any form whatsoever without the manufacturer’s authorization.Our products are patented and our logotypes registered. We reserve the right to modify specifications and prices in view of technological improvements or developments which might be necessary.

AFTER-SALE SERVICE
Shouldn’t the instrument work properly, before contacting your distributor make sure that batteries are correctly installed and working, check the test leads and replace them if necessary. Make sure that your operating procedure corresponds to the one described in this manual. Should you need for any reason to return back the instrument for repair or replacement take prior agreements with the local distributor from whom you bought it. Do not forget to enclose a report describing the reasons for returning (detected fault). Use only original packaging. Any damage occurred in transit due to not original packaging will be charged anyhow to the customer. The manufacturer will not be responsible for any damage to persons or things.

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