ENGLISH User manual © Copyright HT ITALIA 2010 Versione EN 1.
HT9012 Contents: 1 SAFETY PRECAUTIONS AND PROCEDURES ..........................................................2 1.1 1.2 1.3 1.4 2 GENERAL DESCRIPTION ...........................................................................................4 2.1 2.2 3 4.1.1 4.1.2 4.2 4.2.1 4.2.2 4.2.3 4.2.4 4.2.5 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 Commands description............................................................................................................... 6 Alignment marks.....................
HT9012 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 .
HT9012 1.2 BEFORE USE Always keep to the instructions contained in this manual: CAUTION Non compliance with the warnings and/or the instructions may damage the tester and/or its components or injure the operator. • • • • • • • Before changing the switch’s 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.
HT9012 2 GENERAL DESCRIPTION HT9012 meter can performs the herewith measurements: • • • • • DC and AC voltage Detection of AC voltage without contact AC current Resistance and test continuity Diode test Each parameter can be selected by rotating the 8-positions switch included OFF position. key to To abilitate the hold function the HOLD key is available.
HT9012 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 eventual damages 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 § 6.3.1 are contained in the package.
HT9012 4 OPERATING INSTRUCTIONS 4.1 INSTRUMENT DESCRIPTION 4.1.1 Commands description LEGEND: 1. Clamp jaw 2. Red LED for AC voltage detection without contact 3. Clamp trigger 4. Rotary function selector 5. HOLD key backlight key 6. 7. LCD display 8. MODE key 9. MAX key 10. RANGE key 11. COM input jack 12. VΩ input jack 13. Battery cover 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.
HT9012 4.2 FUNCTION KEY DESCRIPTION 4.2.1 HOLD key By pushing HOLD key the parameter’s measured value is frozen on the display and the symbol “HOLD” appears on it. Pushing HOLD key another time deactivates this mode. key 4.2.2 By pushing and hold key for about 1s it’s possible to activate the backlight function on key again for about 3s to exit from the function or the display. By pressing and hold waiting the automatically disable after about 20 seconds.
HT9012 4.3 FUNCTIONS OF ROTARY SWITCH DESCRIPTION 4.3.1 DC Voltage measurement CAUTION Maximum input for AC Voltage measurements is 1000VDC or 1000VACrms. Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damaging the meter. Fig. 3: Taking DC voltage measurement 1. Rotate the switch on V position. The “DC” symbol is shown at display 2. Pressing the RANGE key to select the correct range or using the Autorange feature (see § 4.2.3).
HT9012 4.3.2 AC Voltage measurement CAUTION Maximum input for AC Voltage measurements is 1000VDC or 1000VACrms. Do not take any voltage measurement exceeding this limit in order not to risk electrical shock or damaging the meter. Fig. 4: Taking AC voltage measurement 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 V position.
HT9012 4.3.3 AC Current measurement CAUTION Make sure that all the test leads are disconnected from the meter terminals for current measurement. Fig. 5: Taking AC current measurement 1. Approach the meter closest to AC source. The turn on of red LED which is placed to the bottom of clamp jaws (see Fig. 1 – part 2) detect the AC voltage 2. Rotate the switch on position on a measurement range between 2A and 600A . If the current value under test is unknown, select the highest range 3.
HT9012 4.3.4 Resistance measurement CAUTION Before taking any in circuit resistance measurement, remove power from the circuit to be tested and discharge all the capacitors. Fig. 6: Taking resistance measurement 1. Rotate the switch on Ω position. The “Ω” symbol is shown at display 2. Pressing the RANGE key to select the correct range or using the Autorange feature (see § 4.2.3). If the resistance value under test is unknown, select the highest range 3.
HT9012 4.3.5 Continuity test and Diode test CAUTION Before taking any in circuit resistance measurement or diode test, remove power from the circuit to be tested and discharge all the capacitors. Fig. 7: Taking continuity test and diode test position 1. Rotate the switch on Ω 2. Pushing MODE key and select continuity test. The symbol is shown at display 3. Insert the red test lead plug into VΩ jack and the black test lead plug into COM jack and perform continuity test on the object on test (see Fig.
HT9012 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.
HT9012 6 TECHNICAL SPECIFICATIONS 6.1 CHARACTERISTICS Accuracy is calculated as [% rdg + (n°of dgt) * resolution] referred to: 23°C ± 5°C <80%RH DC Voltage Range Resolution Accuracy Input impedance Overload protection 200.0mV 2.000V 20.00V 200.0V 1000V 0.1mV 0.001V 0.01V 0.1V 1V ±(1.0%rdg + 3dgt) 10MΩ 1000VDC/ACrms Input impedance Overload protection 10MΩ 1000VDC/ACrms The meter emits a continuous sound with VDC >1000V AC Voltage Range Resolution 200.0mV 2.000V 20.00V 200.0V 1000V 0.
HT9012 6.1.1 Safety Comply with: Insulation: Pollution degree: For inside use, max height: Installation category: IEC/EN 61010-1 double insulation 2 2000m (6562 ft) CAT IV 600V, CAT III 1000V to ground 6.1.
HT9012 7 SERVICE 7.1 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 local distributor from whom you bought it.
