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   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

[email protected]

1.800.561.8187

Summary of Contents for HT9021

Page 1: ...Copyright HT ITALIA 2012 Release EN 1 04 19 04 2012 ENGLISH User manual www com information itm com 1 800 561 8187...

Page 2: ...y 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...

Page 3: ...on 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...

Page 4: ...ntrol 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 fo...

Page 5: ...ults 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 inc...

Page 6: ...R 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...

Page 7: ...DE MAX MIN Hz PEAK REL function keys 7 LCD display 8 V CAP 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...

Page 8: ...d 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 k...

Page 9: ...sition 3 Insert the red test lead plug into V CAP 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 displ...

Page 10: ...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 t...

Page 11: ...Insert the red test lead plug into V CAP 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 W...

Page 12: ...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 60 4 Pushing MODE key and select diode te...

Page 13: ...ug into V CAP 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 capacit...

Page 14: ...n 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 V...

Page 15: ...hese 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 i...

Page 16: ...A 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...

Page 17: ...ly 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 o...

Page 18: ...meter emits a bip bip sound on 1000V range for VAC 770V Resistance and Continuity test Autorange Range Resolution Accuracy Buzzer Overload protection 600 0 0 1 1 0 rdg 5dgt 60 600VDC ACrms 6 000k 0 00...

Page 19: ...dg 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 100 s 100ms Pulse frequency...

Page 20: ...0 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 44...

Page 21: ...lts due to servicing carried out by a person not authorized by the company faults due to modifications made without explicit authorisation of our technical department faults due to adaptation to a par...

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