Tenmars TM-1012 User manual
DIGITAL CLAMP METER User’s manual TM-
1012
HB2TM1012UL1
CONTENTS
1. Features...........................................................1
2. Specifications....................................................1
3. Instrument Description......................................6
3.1.Alignment marks .......................................6
3.2.Use of rubber test leads holster ................6
4. Measurement....................................................7
4.1.4-1. Notes .................................................7
4.2.AC Current (ACA) measurement...............8
4.3.AC Voltage (ACV) measurement ..............9
4.4.DC Voltage (DCV) measurement............10
4.5.Resistance measurements......................11
4.6.Continuity test .........................................12
4.7.Diode Check ...........................................13
5. Symbols Description.......................................14
6. Safety precaution............................................14
7. Maintenance Notes.........................................15
7.1.Maintenance and Care............................16
EN-1
TM-1012
Thank you for purchasing this instrument. Please read
this instruction manual carefully and completely before
using your digital clamp meter correct operation will
insure the best performance and decrease the possibility
of damages.
Safety Precaution
CAUTION
Take extreme care for the following
conditions while measuring
1. FEATURES
* Jaws opening up to 30mm.
* The maximum conductor size is ψ30mm.
* Safety sockets designed.
* Data Hold.
*Impedance in circuit is below 25ΩThe buzzer will
sound.
2. SPECIFICATIONS
a. Display: 3 1/2 digits LCD with maximum reading
1999, Plus decimal point, unit symbol indication.
b. Polarity Indication: Automatic polarity, “-“ display for
negative input.
c. Overload Indication: LCD will show a “OL” in the left
highest position.
d. Low Battery Indication : Replace battery as LCD
display “ ”.
EN-2
TM-1012
e. Battery Life: 200 hours approx.(alkaline battery
recommended)
f. Sampling Rate: 2 times per second for digital display.
g. Power Supply: R03 (AB)/SIZE AAA 1.5V/UM4
battery x2.
h. Operation Altitude: up to 2000m.
i. Operating Environment: Indoor use. This instrument
has been designed for use in an environment of
pollution degree 2.
j. Auto Power Off: The power will be automatically turn
off while the range set is unchanged formorethan 10
minutes.
k. Disabling Auto Off: Set the range selector OFF
position to any range and also press down RANGE
button.
l. Operating Temperature : 5℃to 40℃
m. Operating Humidity: 80% relative humidity for
temperatures up to31℃decreasing linearly to 50%
relative humidity at 40℃.
n. Storage Temperature & Humidity: -10℃to 60℃,
0~70% RH.
o. Safety: EN 61010-1(2001) and EN 61010-2-
032(2002) ,UL61010B-1, UL1010B-2-032 CATIII
600V (between ground and input terminal)
p. EMC:This apparatus was designed in accordance
with EMC standards in force and its compatibility has
been tested in accordance EN61326 (1997) + A1
(1998) + A2 (2001).
q. Dimension: 205mm(L)x64mm(W)x39mm(H).
r. Weight: About 280g.(including batteries)
EN-3
TM-1012
s. Accessories: Test Leads 、manual 、Carrying
case、1.5V Batteries x2,Rubber test lead holster.
Electrical Specifications
Accuracy: ±(…..%rdg……dgt)
ACA (Auto/Manual)
Range
Resolution
Accuracy
50Hz~60 Hz
Overload Protection
200A
0.1A
±(1.5%+10)
600A rms
(60 second)
400A
1A
ACV (Auto/Manual)
Range
Resolution
Accuracy
50Hz~500 Hz
Input
Impedance
Overload
Protection
2V
1mV
±(1.0%+3)
11MΩ
DC/AC
660V rms
20V
10mV
10MΩ
200V
100mV
600V
1V
±(1.2%+3)
DCV (Auto/Manual)
Range
Resolution
Accuracy
Input
Impedance
Overload
Protection
2V
1mV
±(0.8%+2)
11MΩ
DC/AC
660V rms
20V
10mV
10MΩ
200V
100mV
600V
1V
±(1.0%+2)
Continuity Test
EN-4
TM-1012
Range Buzzer Max. Open Overload
Voltage Protection
below 25ΩAbout-1.5VDC 600V
rms Diode Check
Range
Resolution
Accuracy
Max. Open
Voltage
Overload
Protection
10mV
±(0.5%+3)
About-
3.VDC
600V rms
Resistance (Auto/Manual)
Range
Resolution
Accuracy
Max. Open
Voltage
Overload
Protection
200Ω
0.1Ω
±(1%+5)
about -1.5VDC
DC/AC
600V rms
(60Second)
2KΩ
1Ω
±(1%+3)
About-0.45VDC
20KΩ
10Ω
200KΩ
100Ω
2MΩ
1KΩ
20MΩ
10KΩ
±(3%+3)
3. INSTRUMENT DESCRIPTION(SEE FIG.1)
1. Inductive clamp jaw.
2. Safety guard.
3. Jaw Trigger.
4. DATA HOLD button: The reading data shown on
LCD can be locked while pressing the button.
EN-5
TM-1012
5. Note: When this button is pressed, the range is
unchanged.
6. Rotary Range Selector.
7. RANGE Button: Manual ranging is allowed while the
button is pressed, and the symbol MANU is shown
on LCD, The auto ranging mode is activated again
while pressing the button more than 2 seconds or
setting the range.
8. LCD.
9. V/ΩJack: It is used for the connection of positive
signal input while measuring DCV,ACV,Ω/.
10. COM Jack: it is used for the connection of negative
signal input while measuring DCV, ACV,Ω/.
1.Inductive clamp Jaw
2.Safety guard
3.Data hold
4.Rotary Range
Selector
5.Range button
6.LCD
7.V/ΩJack
8.Jaw Trigger
9.COM Jack
EN-6
TM-1012
Fig1. Instrument Description
3.1. ALIGNMENT MARKS
Put the conductor within the jaws on intersection of the
indicated marks as much as possible (see Fig.2)in order
to meet the meter accuracy specifications.
LEGEND:
1) Alignment marks. 2)
Conductor.
Fig. 2:Alignment marks
3.2. USE OF RUBBER TEST LEADS HOLSTER
In standard accessories of instrument there is a rubber
holster that, inserted on clamp, can bring one of two test
leads, like showed in Fig.3
1
2
EN-7
TM-1012
Fig. 3: Use of rubber test lead holster
With this rubber holster its possible to have a very
practical use of instrument, executing measures with test
leads and at the same time see value at display of
instrument.
4. MEASUREMENT
4.1. 4-1. NOTES
1. Check if the batteries are installed properly.
2. Check if the LCD and the range indicator show the
same as the function desired.
3. When changing range, firstly remove the tested
conductor or electrical circuit from the clamp jaw in
order to avoid and accident.
4. Strong vibrations and impacts, may cause damage
to the instrument.
EN-8
TM-1012
5. Do not test on or connect to any circuit with voltage
or current exceeding the specified overload
protection.
6. When measuring resistor, Please do not add any
voltage, though there is a protection circuit,
excessive voltage will still cause malfunction.
7. When measuring current, firstly remove the test
leads of common and voltage / resistance.
8. Whenmeasuring current, anystrong current nears or
closes to the clamp jaw will affect the accuracy.
9. This instrument is not availablefor the non-sine wave
AC signal, otherwise there will be a great error.
10. When measuring current, always put the tested
conductor in the center of the clamp jaw so as to
obtain a more accurate reading.
11. Duringmeasuring, ifthe value of readingorindication
of sign remain unchanged, check if the DATA HOLD
function is active and the symbol HOLD MANU is
displayed on the LCD.
12. In order to avoid reading incorrect data, you have to
replace the batteries immediately when the symbol
BAT appears on the LCD.
13. Do not touch the circuit board before you take any
adequate action, and thus prevent from any damage
of contamination and static electricity.
4.2. AC CURRENT (ACA) MEASUREMENT
CAUTION WAR
EN-9
TM-1012
Make sure that all the test leads are
disconnected with the meter’s terminal for
current measurement.
1. Select “~A” range.
2. Open the clamp and put the tested conductor in the
center of the clamp jaws (See Fig.4).(No gap is
allowed between the connections of clamp jaws)
3. The current value will be indicated on the LCD.
4. If the reading is difficult, press the DATA HOLD
button to hold the obtained value. To exit from this
function press DATA HOLD button again.
Fig.(4)Use of the clamp during AC current
measurement
4.3. AC VOLTAGE (ACV) MEASUREMENT
WCAUTION ARNING
EN-10
TM-1012
Max. Input for DCV or ACV is 600V. Do not
attempt to take any voltage measurement which
exceeds the limits. Exceeding the limits could
cause electrical shock and damage the clamp
meter.
1. Select “V~" range.
2. Insert the test leads into the jacks. The red test lead
plug into V/Ωjack, and the black test lead plug into
COM jack.
3. Connect the two long ends of test leads to the
desired circuit, and then reading will be displayed.
4. If the reading is difficult, Press DATA HOLD button to
hold the obtained value. To exit from this function,
press DATA HOLD button again.
4.4. DC VOLTAGE (DCV) MEASUREMENT
WCAUTION ARNING
Max. Input for DCV or ACV is 600V. Do not
attempt to take any voltage measurement which
exceeds the limits. Exceeding the limits could
cause electrical shock and damage the clamp
meter.
EN-11
TM-1012
Fig.5 Use of clamp for DC voltage measures
1. Select “ V” range.
2. Insert the test leads into the jacks. The red test lead
plug into V/Ωjack and the block test lead plug into
COM jack.
3. Connect the two long ends of test leads to the
desired circuit.
4. If the reading is difficult, press DATA HOLD button to
hold the obtained value. To exit from this function,
press DATA HOLD button again.
4.5. RESISTANCE MEASUREMENTS
WARNING CAUTION
EN-12
TM-1012
Before measuring the resistance, please be sure
to remove power from the circuit being tested
and discharge all the capacitors. If the reading
is over range, the symbol ”OL” will be displayed.
Fig.6 Use of clamp for resistance measures
1. Select “Ω” range.
2. Insert the test leads into the jacks, the red test lead
play into” V/Ω” jack, and the black test lead plug into
COM jack.
3. Connect the two long ends of test leads to the
desired circuit, then reading will be displayed.
4. Press DATA HOLD button to hold the value when
takes the resistance measurement, if it’s necessary.
4.6. CONTINUITY TEST
1. Select “ “ range.
EN-13
TM-1012
2. Insert the test leads into the jacks. The red test lead
plug into V/Ωjack, and the black test lead plug into
COM jack.
3. Connect the two long ends of test leads to the
desired circuit, then reading will be displayed while
the buzzer sounds the resistance value is lower than
25Ωapproximately.
4.7. DIODE CHECK
1. Select “ “ range.
2. Insert the test leads into the jacks. The red test lead
plug into V/Ωjack, and the black test lead plug into
COM jack.
3. Insert the two long ends of test leads to the P-N
junction under test. The RED terminal is the positive
terminal and the BLACK terminal is the negative one.
4. The threshold voltage will be shown on the display.
Fig7. Diode test
+
-
RED
BLACK
EN-14
TM-1012
5. SYMBOLS DESCRIPTION
DC Voltage or Current.
AC Voltage or Current.
DC/AC Voltage or Current.
Ground.
Meter Double insulated.
Caution: Refer to the manual.
Danger: high voltage: risk of electric shock.
Application around and removal from hazardous
live conductors is permitted.
6. SAFETY PRECAUTION
CAUTION
Take extreme care for the following conditions
while measuring
1. Measuring voltage over 20V as it may cause human
body electricity conduction.
2. Measure AC power.
3. Do not measure voltage, current under humid or wet
environment.
4. If any unusual condition of test leads end (metal
part). And attachment of the meter, such as
EN-15
TM-1012
breakage, deformation, fracture, foreign substance,
No display, etc., do not conduct any measuring.
5. Do not contact anyexposedmetal (conductive) parts,
such as end of test lead, jack, fixing object, circuit
etc,.
6. Keep you insulated from the object waiting for
measuring.
7. Do not operate the meter under the environment with
explosive gas (material),
combustible gas(material) steam or filled with
dust.
8. In order to avoid reading incorrect data, you have to
replace the batteries immediatelywhen the symbol “
”appears on the LCD.
9. In order to avoid the damage caused by
contamination and static electricity, do not touch the
circuit board before you take any adequate action.
7. MAINTENANCE NOTES
CAUTION
If the symbol ” ” appears on the LCD, please
replace the battery immediately.
1. Remove all test leads and the conductor under test
before performing of battery replacement.
2. Set the range to OFF position.
3. Remove the screws from the battery cover with
screwdriver, and detach the battery cover from the
bottom cover.
EN-16
TM-1012
4. Remove the batteries from battery holder carefully,
(replace them with new batteries UM-4 or IEC LR03
AAA 1.5V x 2).
5. Attach the battery cover back to its right place, and
tight it with screws.
7.1. MAINTENANCE AND CARE
1. This meter is a precision digital instrument. Whether
in use or in storage, please do not exceed the
specification requirements to avoid any possible
damage or danger during use.
2. Do not use strong or abrasive detergents, water, and
wet cloth to clean the instrument. Do use a dry cloth
to clean the instrument.
3. Do not place this meter in high temperature or
humidity or expose to direct sunlight.
4. Once the measurement is completed, turn the rotary
switch to off. Remove the batteries from battery
holder if the instrument is not be used for a long
period in order to avoid the liquid leakage from the
battery.
5. That all necessary requirements of inspection and
maintenance are not mentioned in this manual, a
qualified technician should perform it.
TENMARS ELECTRONICS CO., LTD 6F, 586, RUI
GUANG ROAD, NEIHU, TAIPEI 114, TAIWAN.
E-mail:service@tenmars.com
http://www.tenmars.com
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