Triplett CM1070 Manuel utilisateur

User Manual

CM1070

TRMS AC/DC Clamp with Dual Type K and A

Introduction

Congratulations on your purchase of the CM1070 True RMS Clamp Meter. This meter

measures AC Current, DC Current, AC/DC Voltage, Resistance, Capacitance, Frequency,

Diode Test, Duty Cycle and Continuity. Special features include Dual Input Thermocouple

Temperature and Non-Contact Voltage detector. The double molded case is designed for

heavy duty use. This meter is shipped fully tested and calibrated and, with proper use, will

provide years of reliable service.

Safety

International Safety Symbols

This symbol, adjacent to another symbol or terminal, indicates the user

must refer to the manual for further information.

This symbol, adjacent to a terminal, indicates that, under normal use,

hazardous voltages may be present

Double insulation

This WARNING symbol indicates a potentially hazardous situation, which

if not avoided, could result in death or serious injury.

This CAUTION symbol indicates a potentially hazardous situation, which

if not avoided, may result damage to the product.

PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY

OVERVOLTAGE CATEGORY I

Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in

which measures are taken to limit the transient overvoltages to an appropriate low level.

Note –Examples include protected electronic circuits.

OVERVOLTAGE CATEGORY II

Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be

supplied from the fixed installation.

Note –Examples include household, office, and laboratory appliances.

OVERVOLTAGE CATEGORY III

Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.

Note –Examples include switches in the fixed installation and some equipment for industrial

use with permanent connection to the fixed installation.

OVERVOLTAGE CATEGORY IV

Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.

Note –Examples include electricity meters and primary over-current protection equipment.

WARNING

CAUTION

SAFETY NOTES

•Do not exceed the maximum allowable input range of any function.

•Do not apply voltage to meter when resistance function is selected.

•Set the function switch OFF when the meter is not in use.

•Remove the battery if meter is to be stored for longer than 60 days.

WARNINGS

•Set function switch to the appropriate position before measuring.

•When measuring volts do not switch to current/resistance modes.

•Do not measure current on a circuit whose voltage exceeds 600V.

•When changing ranges always disconnect the test leads from the circuit under test.

CAUTIONS

•Improper use of this meter can cause damage, shock, injury or death. Read and

understand this user manual before operating the meter.

•Always remove the test leads before replacing the battery or fuses.

•Inspect the condition of the test leads and the meter itself for any damage before

operating the meter. Repair or replace any damage before use.

•Use great care when making measurements if the voltages are greater than 25VAC

rms or 35VDC. These voltages are considered a shock hazard.

•Always discharge capacitors and remove power from the device under test before

performing Diode, Resistance or Continuity tests.

•Voltage checks on electrical outlets can be difficult and misleading because of the

uncertainty of connection to the recessed electrical contacts. Other means should be

used to ensure that the terminals are not "live".

•If the equipment is used in a manner not specified by the manufacturer, the protection

provided by the equipment may be impaired.

•This device is not a toy and must not reach children’s hands. It contains hazardous

objects as well as small parts that the children could swallow. In case a child

swallows any of them, please contact a physician immediately.

•Do not leave batteries and packing material lying around unattended; they can be

dangerous for children if they use them as toys.

•In case the device is going to be unused for an extended period of time, remove the

batteries to prevent them from draining.

•Expired or damaged batteries can cause cauterization on contact with the skin.

Always, therefore, use suitable hand gloves in such cases

•See that the batteries are not short-circuited. Do not throw batteries into the fire.

•Do not directly view or direct the laser pointer at an eye. Low power visible lasers

do not normally present a hazard but may present some potential for hazard if viewed

directly for extended periods of time.

Function

Maximum Input

A AC,

1000A AC

V DC, V AC

600V DC/AC

Resistance, Capacitance, Frequency, Diode Test

250V DC/AC

A

4000 A

Type K Temperature

30V DC, 24V AC

Description

Meter Description

1. Current clamp

2. Clamp opening trigger

3. HOLD/BACKLIGHT button

4. MODE /oC/oF

5. Backlit LCD Display

6. Type K input jacks

7. Multimeter input jacks

8. Non-Contact Voltage Detector

9. LAMP

10. NCV LED indicator

11. LAMP/ZERO button

12. Function switch

13. MAX/MIN button

14. RANGE/PEAK / Thermocouple display button

15. Input shutter

Display icons Description

HOLD Data Hold

Auto Power Off

AUTO Autoranging

PPeak Hold

DC Direct Current

AC Alternating Current

MAX Max reading

MIN Min reading

Low battery

ZERO DCA or CAP zero

mV or V Milli-volts or Volts (Voltage)

Ohms (Resistance)

A Amperes (Current)

F Farad (Capacitance)

Hz Hertz (Frequency)

% Duty Ratio

oF and oC Fahrenheit and Celsius units (Temperature)

T1, T2, T1-T2Therocouple 1, Thermocouple 2, Thermocouple difference

n, m, , M, k Unit of measure prefixes: nano, milli, micro, mega, and kilo

•))) Continuity test

Diode test

Operation

NOTES: Read and understand all Warning and Caution statements in this operation

manual prior to using this meter. Set the function select switch to the OFF position when

the meter is not in use.

Input Shutter

The Input Shutter inhibits simultaneous connection to the thermocouple jacks and the

DMM input jacks. This is a safety feature which prevents a potentially hazardous condition

from existing during high voltage measurements. Slide the shutter up for test lead

measurements or slide it down for thermocouple temperature measurements.

Non-Contact Voltage Detector

WARNING: Risk of Electrocution. Before use, always test the Voltage Detector on a

known live circuit to verify proper operation.

1. Rotate the Function switch to any measurement position.

2. Place the detector probe tip on the conductor to be tested.

3. If AC voltage is present, the NCV detector light will turn on with a steady red light.

NOTE: The conductors in electrical cord sets are often twisted. For best results, move the

probe tip along a length of the cord to assure placing the tip near the live

conductor.

NOTE: The detector is designed with high sensitivity. Static electricity or other sources of

energy may randomly trip the sensor. This is normal operation.

AC/DC Current Measurements

WARNING: Disconnect the test leads before making clamp measurements.

1. Rotate the Function switch to the 1000AAC/DC

position

2. Press the MODE button to select AC or DC.

3. Press the trigger to open jaw. Fully enclose only

one conductor.

4. Read the current value in the display.

5. If the value is less than 50A, rotate the function

switch to the 50AAC/DC position to improve

resolution.

DCA Zero

The Zero feature removes offset values and improves accuracy for DC current

measurements. To perform a zero, select ADC and, with no conductor in the jaw, press

and hold the MODE ZERO button for two beeps. The display will zero. The offset value

is now stored and removed from all measurements.

Frequency

When ACV is selected, the measured frequency can be viewed in the lower display.

AC/DC Voltage Measurements

CAUTION: Do not measure voltages if a motor on the circuit is being switched ON or

OFF. Large voltage surges may occur that can damage the meter.

1. Slide the input shutter to the up position.

2. Rotate the function switch to the V position.

3. Press the MODE button to select AC or DC Voltage.

4. Insert the black test lead banana plug into the negative COM

jack.

Insert the red test lead banana plug into the positive Vjack.

5. Touch the black test probe tip to the negative side of the circuit.

Touch the red test probe tip to the positive side of the circuit.

6. Read the voltage value in the display.

Frequency

When ACA is selected, the measured frequency can be viewed in th

lower display.

Resistance Measurements

Note: Remove power from the device under test before making

resistance measurements

1. Slide the input shutter to the up position.

2. Set the function switch to the  position.

3. Insert the black test lead banana plug into the negative COM

jack.

Insert the red test lead banana plug into the positive Vjack.

4. Touch the black test probe tip to one side of the device.

Touch the red test probe tip to the other side of the device.

5. Read the resistance value in the display.

Continuity Test

1. Connect as described for resistance measurements.

2. Press the MODE button to select continuity•))).

3. Touch the test probe tips across the circuit or component

under test.

4. If the resistance is < 50, a tone will sound.

Diode Test

1. Connect as described for resistance measurements

2. Press the MODE button to select diode test .

3. Touch the test probe tips to the diode or semiconductor junction under test. Note the

meter reading.

4. Reverse the test lead polarity by reversing the red and black leads. Note this reading.

5. The diode or junction can be evaluated as follows:

▪If one reading displays a value (typically 0.400V to 01.800V) and the other

reading displays OL, the diode is good.

▪If both readings display OL the device is open.

▪If both readings are very small or ‘0’, the device is shorted.

Capacitance Measurements

WARNING: To avoid electric shock, discharge the capacitor before measuring.

1. Slide the input shutter to the up position.

2. Rotate the function switch to the capacitance position.

3. Insert the black test lead banana plug into the negative COM jack.

Insert the red test lead banana plug into the positive jack.

4. Touch the black test probe tip to one side of the device.

Touch the red test probe tip to the other side of the device.

5. Read the capacitance value in the display.

Note: For very large values of capacitance measurement time can be

several seconds before the final reading stabilizes.

Note: The Zero feature removes stray test lead capacitance to improve

the accuracy of low value capacitance measurements. To perform a

zero, Press and hold the MODE ZERO button for two beeps. The

display will zero. The offset value is now stored and is removed

from all measurements.

Frequency and Duty Ratio Measurements

1. Slide the input shutter to the up position.

2. Rotate the function switch to the Hz % Position.

3. Insert the black test lead banana plug into the negative COM jack.

Insert the red test lead banana plug into the positive Hz jack.

4. Touch the black test probe tip to one side of the device.

Touch the red test probe tip to the other side of the device.

5. Read the Frequency value on the upper large display.

Read the Duty Ratio on the lower small display.

6. Press the MODE button to display the Duty Ratio on the large

display.

A DC/AC Current Measurements

1. Slide the input shutter to the up position.

2. Rotate the function switch to the A position.

3. Press the MODE button to select AC or DC.

4. Insert the black test lead banana plug into the negative COM jack.

Insert the red test lead banana plug into the positive Ajack.

5. Turn power to the circuit under test off and make a break in the

circuit.

6. Insert the meter in series with the circuit;

Touch the black test probe tip to the negative side of the break.

Touch the red test probe tip to the positive side of the break.

7. Turn circuit power on.

8. Read the current value in the display.

Type K Temperature Measurements

1. Slide the input shutter to the down position.

2. Rotate the function switch to the TYPE K temperature position.

3. Press the MODE button to select °F or °C.

4. Insert the Temperature Probe(s) into the T1 and/or T2 type k

sockets.

5. Place the temperature probe tip(s) where needed.

6. Read the temperature on the display.

7. Press the T1-T2 button to step through the display combinations:

Upper display Lower display

a. T1 T2

b. T2 T1

c. T1-T2 T1

d. T1- T2 T2

Note: In case of an open input or a temperature overrange, the meter will

display “- - - -” .

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