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Copyright HT ITALIA 2016

Release EN 1.02 - 06/04/2016

ENGLISH

User manual

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Summary of Contents for HT25N

Page 1: ... Copyright HT ITALIA 2016 Release EN 1 02 06 04 2016 ENGLISH User manual ...

Page 2: ... HOLD key 5 4 2 2 Backlight key 5 4 3 Measurements 6 4 3 1 DC Voltage measurement 6 4 3 2 AC Voltage measurement 7 4 3 3 DC Current measurement 8 4 3 4 Resistance measurement 9 4 3 5 Continuity test and Diode test 10 4 3 6 Battery test 11 5 MAINTENANCE 12 5 1 Battery and fuses replacement 12 5 2 Cleaning 12 5 3 End of life 12 6 TECHNICAL SPECIFICATIONS 13 6 1 Technical features 13 6 1 1 Reference ...

Page 3: ...may damage the instrument or its components Double insulated meter AC Voltage DC Voltage or Current Ground reference 1 1 PRELIMINARY This instrument has been designed for use in environments of pollution degree 2 It can be used for VOLTAGE and DC CURRENT measurements on installations of CAT III 600V measurement This instrument is not suitable for measurements of not sine wave voltage When using th...

Page 4: ...egory 6 7 4 Measuring circuits 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 installatio...

Page 5: ...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 6 3 1 are included Should you have to return back the instrument for any reason please follow the instructions mentioned in 7 3 2 SUPPLY VOLTAGE The instrument is supplied by 1x9V battery type IEC 6F22 When battery are low a low ba...

Page 6: ...minal COM 7 Input terminal V mA A Fig 1 Instrument description 4 2 DESCRIPTION OF FUNCTION KEYS 4 2 1 HOLD key By pressing HOLD key the measured value is frozen on the display where the symbol HOLD appears Press again HOLD to disable this function and resume normal operation 4 2 2 Backlight key By pressing key it s possible to activate disabled the backlight function on the display ...

Page 7: ...mV 2000mV 20V 200V or 600V 2 Insert the test leads into the jacks the red plug into V mA A jack and black plug into COM jack 3 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 4 If the message OL is displayed select a higher range 5 The symbol on the instrument display indicates that voltage has ...

Page 8: ...strument Fig 3 Using the instrument for AC Voltage measurement 1 Selecting the position 200V or 600V 2 Insert the test leads into the jacks the red plug into V mA A jack and black plug into COM jack 3 Connect the test leads to the circuit under test see Fig 3 The voltage value is displayed 4 If the message OL is displayed select a higher range 5 For HOLD function refer to 4 2 1 ...

Page 9: ... 200mA or 10A 3 Insert the test leads into the jacks the red plug into 10A jack or V mA A 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 respecting the polarities see Fig 4 5 Energize the circuit under test The current value will be displayed 6 The message OL means that the detected current exceeds the limits 7 The...

Page 10: ... the instrument for Resistance measurement 1 Selecting the position 200 2000 20k 200k or 2000k 2 Insert the test leads into the jack the red plug into V mA A jack and black plug into COM jack 3 Connect the test leads to the circuit under test see Fig 5 The resistance value is displayed 4 If the message OL is displayed a higher range must be selected 5 For HOLD function refer to 4 2 1 ...

Page 11: ... Connect the test leads to the circuit under test see Fig 6 left part 4 The resistance value just indicative is displayed and the instrument emits a sound signal if the resistance value results to be 30 Diode test 5 Connect the test leads to the diode under test observing the proper polarities see Fig 6 right part 6 The threshold voltage value of direct polarization expressed in mV is shown at dis...

Page 12: ...est or 9V 9V battery test 2 Insert the test leads into the jacks the red plug into V mA A jack and black plug into COM jack 3 Connect the red and black test leads to the positive and negative poles of the battery under test respectively see Fig 7 The battery voltage value is displayed 4 For HOLD function refer to 4 2 1 ...

Page 13: ... input terminals 3 Remove the fixing screw from the battery cover and detach it 4 Remove the battery replacing it with new one of the same type see 6 1 2 respecting the polarity signs 5 Replace the battery cover and screw 6 Use the appropriate battery disposal methods for your area Fuses replacement 1 Turn OFF the meter and disconnect the test leads from the input terminals 2 Unscrew the four fixi...

Page 14: ... 0V 0 1V 1 5 rdg 12dgt 1M 600V DC AC 600V 1V DC Current Range Resolution Accuracy Internal voltage drop Overload protection 2000 A 1 A 1 5 rdg 3dgt 200mV Fast fuse 200mA 600V 20 00mA 0 01mA 200 0mA 0 1mA 10 00A 0 01A 2 5 rdg 2dgt Fast fuse 10A 600V Resistance and Continuity test Range Resolution Accuracy Buzzer Overload protection 200 0 0 1 1 2 rdg 4dgt 30 250Vrms 15sec 2000 1 20 00k 0 01k 200 0k ...

Page 15: ... F10A 600V 5 x 20mm 10A input F200mA 600V 5 x 20mm mA A input Display Specifications 3 LCD with max reading 2000 counts sign and decimal point 6 2 ENVIRONMENT 6 2 1 Environmental conditions Reference temperature 18 C 28 C 64 82 F Working temperature 0 50 C 32 122 F Relative humidity 70 HR Storage temperature 20 60 C 4 140 F Storage humidity 80 HR This instrument satisfies the requirements of Low V...

Page 16: ...rried out by unskilled or unauthorized personnel Instruments for whatever reason modified by the customer himself without explicit authorization of our Technical Dept 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...

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