TENMA UT-204 User Manual

Download

Page 1

Clamp Meter

TRMS

Page <1> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Table of Contents

Title Page

Overview --------------------------------------------------------------------------------------------------------------- 2

Unpacking Inspection -------------------------------------------------------------------------------------------------- 2 Safety Information ------------------------------------------------------------------------------------------------------ 2 Rules for Safe Operation -------------------------------------------------------------------------------------------- 3 International Electrical Symbols ----------------------------------------------------------------------------------- 4 The Meter Structure --------------------------------------------------------------------------------------------------- 4 Rotary Switch ---------------------------------------------------------------------------------------------------------- 5 Functional Buttons --------------------------------------------------------------------------------------------------- 5 The Effectiveness of Functional Buttons ----------------------------------------------------------------------- 5 Display Symbols ------------------------------------------------------------------------------------------------------- 6 Measurement Operation --------------------------------------------------------------------------------------------- 7

A. DC/AC Voltage Measurement ---------------------------------------------------------------------- 7 B. Measuring Resistance -------------------------------------------------------------------------------- 7 C. Testing Diodes ----------------------------------------------------------------------------------------- 8 D. Testing for Continuity ------------------------------------------------------------------------------ 8 E. Frequency Measurement ---------------------------------------------------------------------------- 9 F. Duty Cycle Measurement ---------------------------------------------------------------------------- 9 G. DC/AC Current Measurement ---------------------------------------------------------------------- 10

Sleep Mode ------------------------------------------------------------------------------------------------------------- 10 Specifications --------------------------------------------------------------------------------------------------------- 11

A. General Specifications ------------------------------------------------------------------------------ 11 B. Environmental Requirements ------------------------------------------------------------------ 11

Accuracy Specifications ----------------------------------------------------------------------------------------- 12

A. DC Voltage ----------------------------------------------------------------------------------------- 12 B. AC Voltage ----------------------------------------------------------------------------------------- 12 C. Resistance ----------------------------------------------------------------------------------------- 13 D. Diode Test ----------------------------------------------------------------------------------------- 13 E. Continuity Test ---------------------------------------------------------------------------------------- 13 F. Frequency ----------------------------------------------------------------------------------------- 14 G. Duty Cycle ----------------------------------------------------------------------------------------- 14 H. DC Current ----------------------------------------------------------------------------------------- 14 I. AC Current ----------------------------------------------------------------------------------------- 15

Maintenance ----------------------------------------------------------------------------------------------------- 16

A. General Service -------------------------------------------------------------------------------------- 16 B. Replacing the Battery ----------------------------------------------------------------------------- 16

Page 2

Clamp Meter

Trms

Page <2> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Overview

This Operating Manual covers information on safety and cautions. Please read the relevant information carefully and observe all the Warnings and Notes strictly.

Warning

To avoid electric shock or personal injury, read the “Safety Information” and “Rules for Safe Operation” carefully before using the Meter.

Digital Multimeter Model UT204 (hereafter referred to as “the Meter”) are 3 3/4 digits with steady operations, fashionable structure and highly reliable measuring instrument. The Meter uses large scale of integrated circuit with double integrated A/D converter as its core and has full range overload protection.

The Meter can not only measure AC/DC Voltage, AC/DC Current, Frequency, Duty Cycle, Resistance, Diodes, Continuity but also it has Data Hold, Sleep Mode and Relative Mode features.

UT204 has an extra True RMS feature.

Unpacking Inspection

Open the package case and take out the Meter. Check the following items carefully to see any missing or damaged part:

Item Description Quantity

1 English Operating Manual 1 piece

2 Test Lead

1 pair

3 Carrying Bag 1 piece

4 9V Battery (NEDA1604, 6F22 or 006P) 1 piece

In the event you find any missing or damage, please contact your dealer immediately.

Safety Information

This Meter complies with the standards IEC61010: in pollution degree 2, overvoltage category (CAT. II 600V, CAT. III 300V) and double insulation.

CAT. II: Local level, appliance, PORTABLE EQUIPMENT etc., with smaller transient overvoltages than CAT. III. CAT. III: Distribution level, fixed installation, with smaller transient overvoltages than CAT. IV

Use the Meter only as specified in this operating manual, otherwise the protection provided by the Meter may be impaired.

In this manual, a Warning identifies conditions and actions that pose hazards to the user, or may damage the Meter or the equipment under test.

A Note identifies the information that user should pay attention to. International electrical symbols used on the Meter and in this Operating Manual are explained on page 4.

Page 3

Clamp Meter

Trms

Page <3> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Rules For Safe Operation

Warning

To avoid possible electric shock or personal injury, and to avoid possible damage to the Meter or to the equipment under test, adhere to the following rules:

••

Before using the Meter inspect the case. Do not use the Meter if it is damaged or the case (or part of the case) is removed. Look for cracks or missing plastic. Pay attention to the Insulation around the connectors.

••

Inspect the test leads for damaged insulation or exposed metal. Check the test leads for continuity. Replace damaged test leads with identical model number or electrical specifications before using the Meter.

••

Do not apply more than the rated voltage, as marked on the Meter, between the terminals or between any terminal and grounding. If the value to be measured is unknown, use the maximum measurement position and reduce the range step by step until a satisfactory reading is obtained.

••

When measurement has been completed, disconnect the connection between the test leads and the circuit under test, remove the testing leads away from the input terminals of the Meter and turn the Meter power off.

••

The rotary switch should be placed in the right position and no any changeover of range shall be made during measurement is conducted to prevent damage of the Meter.

••

Do not carry out the measurement when the Meter’s back case and battery compartment are not closed to avoid electric shock.

••

Do not input higher than 600V between the two Meter’s input terminal to avoid electric shock and damages to the Meter.

••

When the Meter working at an effective voltage over 60V in DC or 30V rms in AC, special care should be taken for there is danger of electric shock.

••

Use the proper terminals, function, and range for your measurements.

••

Do not use or store the Meter in an environment of high temperature, humidity, explosive, inflammable and strong magnetic field. The performance of the Meter may deteriorate after dampened.

••

When using the test leads, keep your fingers behind the finger guards.

••

Disconnect circuit power and discharge all high -voltage capacitors before testing resistance, continuity and diode.

••

Replace the battery as soon as the battery indicator appears. With a low battery, the Meter might produce false readings

that can lead to electric shock and personal injury.

••

When servicing the Meter, use only the same model number or identical electrical specifications replacement parts.

••

The internal circuit of the Meter shall not be altered at will to avoid damage of the Meter and any accident.

••

Soft cloth and mild detergent should be used to clean the surface of the Meter when servicing. No abrasive and solvent should be used to prevent the surface of the Meter from corrosion, damage and accident.

Page 4

Clamp Meter

Trms

Page <4> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

••

The Meter is suitable for indoor use.

••

Turn the Meter off when it is not in use and take out the battery when not using for a long time.

••

Constantly check the battery as it may leak when it has been using for some time, replace the battery as soon as leaking appears. A leaking battery will damage the Meter.

International Electrical Symbols

AC (Alternating Current).

DC (Direct Current).

AC or DC.

Grounding.

Double Insulated.

Warning. Refer to the Operating Manual.

Deficiency of Built-In Battery

Continuity Test.

Diode.

Fuse.

Application around and removal from HAZARDOUS LIVE conductors is permitted.

Conforms to Standards of European Union.

The Meter Structure (see figure 1)

1. Input Terminals

2. LCD Display

3. Functional Buttons

4. Rotary Switch

5. Trigger: press the lever to open the transformer jaws. When the pressure on the lever is released, the jaws will close.

6. Hand Guards: to protect user’s hand from touching the dangerous area.

7. Transformer Jaw: designed to pick up the AC and DC current flowing through the

conductor. It could transfer current to voltage. The tested conductor must vertically go through the Jaw center.

Page 5

Clamp Meter

Trms

Page <5> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Functional Buttons

Below table indicated for information about the functional button operations.

Rotary Switch Position Function

OFF Power is turned off.

AC/DC voltage measurement.

ΩΩ

Resistance measurement.

: Diode

: Continuity Test

Frequency Measurement and Duty Measurement

AC and DC current measurement range

Button Operation Performed

HOLD

••

Press HOLD to enter the Hold mode in any mode, the Meter beeps.

••

Press HOLD again to exit the Hold mode, the Meter beeps.

REL∆

••

Press to select manual ranging measurement mode. The meter is default to auto ranging measurement mode.

••

When the Meter is at manual ranging measurement mode, press to step down the range.

At range:

••

Press to enter the REL mode.

••

It subtracts a stored value from the present measurement value and displays a result.

At Hz/Duty% range:

••

Press to switch between Hz measurement mode and Duty % measurement mode.

SELECT

••

Press SELECT button to select the alternate functions marked in blue colour on the Meter’s faceplate

including

••

After the Meter entering Sleep Mode, press and hold SELECT to turn the Meter on, it will disable the Sleep Mode feature.

The Effectiveness of Functional Buttons

Not every functional buttons can be used on every rotary switch positions. Below two tables describe which functional buttons can be used on which rotary switch positions

Model: UT201

Rotary Switch

Positions

Functional Buttons

SELECT

REL∆

HOLD

• • •

N/A

• •

•

N/A

•

N/A

• •

• • •

Rotary Switch

Below table indicated for information about the rotary switch positions.

At and

ΩΩ

range

Page 6

Clamp Meter

Trms

Page <6> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Display Symbols (see figure 2)

Number Symbol Meaning

1 AC Indicator for AC voltage or current

2 DC Indicator for DC voltage

The battery is low. Warning: To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator appears.

The Meter is in the auto range mode in which the Meter automatically selects the range with the best resolution.

5 Test of diode

6 The continuity buzzer is on

7 Indicator for Duty.

8 Data hold is active

9 Indicator for REL mode

Ohm. The unit of resistance.

Kilohm. 1x103or 1000 ohms

Megohm. 1x10

or 1,000,000 ohms

11 Hz The unit of Frequency

12 A Amperes (amps). The unit of current.

13 mV, V

Volts. The unit of voltage. mV: Millivolt. 1x10

-3

or 0.001 volts

14 Indicates negative reading

15 TRMS Indicator for TRMS mode

16 OL The input value is too large for the selected range

Page 7

Clamp Meter

Trms

Page <7> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Measurement Operation

A. DC/AC Voltage Measurement (see figure 3)

Warning

To avoid harms to you or damages to the Meter from eletric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained.

The DC Voltage ranges are: 400mV, 4V, 40V, 400V and 600V.

The AC Voltage ranges are: 4V, 40V, 400V and 600V.

To measure DC voltage, connect the Meter as follows:

1. Insert the red test lead into the Hz Duty%

terminal and the black test lead into the COM terminal.

2. Set the rotary switch to

. DC measurement mode and auto ranging is a default.

Press SELECT to switch to AC measurement mode or press REL∆ to switch to manual ranging measurement mode.

3. Connect the test leads across with the object being measured. The measured

value shows on the display.

Note

• When DC/AC voltage measurement has been completed, disconnect the connection between the testing leads and the circuit under

test and remove testing leads from the input terminals.

B. Measuring Resistance (see figure 4).

To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring resistance.

The resistance ranges are: 400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ and 40MΩ .

To measure resistance, connect the meter as follows:

1. Insert the red test lead into the Hz duty%

terminal and the black test lead into the COM terminal.

2. Set the rotary switch to Ω. Resistance measurement is default to auto range mode, press

REL∆ to switch to manual ranging measurement mode.

3. Connect the test leads across with the object being measured. The measured value shows

on the display.

Warning

Note

••

To obtain a more precise reading, you could remove the objects being tested from the circuit when measuring.

••

When resistance measurement has been completed, disconnect the connection between the testing leads and the circuit under test

and remove testing leads from the input terminals.

Figure 4

Page 8

Clamp Meter

TRMS

Page <8> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Warning

C. Testing Diodes (see figure 5)

(Figure 5)

To avoid damages to the Meter or to the devices under test, is connect circuit power and discharge all the high-voltage capacitors before testing diodes. Use the diode test to check diodes, transistors, and other semiconductor devices. The diode test sends a current through the semiconductor junction, then measure the voltage drop across the junction. A good silicon junction drops between 0.5V and 0.8V.

To test the diode out of a circuit, connect the meter as follows:

1. Insert the red test lead into the Hz Duty%

terminal and the black test lead into the COM terminal.

2. Set the rotary switch to

. Diode measurement mode is a default or press SELECT to select

measurement mode.

3. For forward voltage drop readings on any semiconductor component, place the red test lead

on the component’s anode and place the black test lead on the component’s cathode

••

To obtain a more precise reading, you could remove the objects being tested from the circuit when measuring.

••

When diode testing has been completed, disconnect the connection between the testing leads and the circuit under test and

remove testing leads from the input terminals.

Note

D. Testing for Continuity (see figure 6)

Warning

To avoid damages to the Meter or to the devices under test, disconnect circuit power and discharge all the high-voltage capacitors before measuring continuity. To test for continuity, connect the meter as follows:

1. Insert the red test lead into the Hz Duty%

terminal and the black test lead into the COM terminal.

2. Set the rotary switch to

and press SELECT button to select

measurement mode.

3. The buzzer sounds if the resistance of a circuit under test is less than 50Ω.

4. The buzzer may or may not sounds if the resistance of a circuit under test is between

50Ω to 100Ω.

5. The buzzer does not sound if the resistance of a circuit under test is higher than

100Ω.

Note

••

When continuity testing has been completed, disconnect the connection between the testing leads and the circuit under test and

remove testing leads from the input terminals.

Page 9

Clamp Meter

TRMS

Page <9> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

E. Frequency Measurement (see figure 7)

Warning

To avoid harms to you or damages to the Meter from electric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained.

The resistance ranges are: 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, 1MHz and 10MHz.

1. Insert the red test lead into the Hz Duty%

terminal and the black test lead into the COM terminal.

2. Set the rotary switch to Hz.

3. Connect the test leads across with the object being measured. The measured value

shows on the display.

To measure frequency, connect the Meter as follows:

Note

When frequency measurement has been completed, disconnect the connection between the testing leads and the circuit under test, and remove the testing leads away from the input terminals of the meter.

F. Duty Cycle Measurement (see figure 8)

Warning

To avoid harms to you or damages to the meter from electric shock, do not attempt to measure voltages higher than 600V AC/DC, although readings may be obtained.

The duty cycle range is: 0.1% to 99.9%.

To measure duty cycle, connect the Meter as follows:

1. Insert the red test lead into the Hz Duty%

terminal and the black test lead into the COM terminal.

2. Set the rotary switch to Hz and press REL∆ to select Duty Cycle

measurement mode.

3. Connect the test leads across with the object being measured.

The measured value shows on the display.

Note

••

When duty cycle measurement has been completed, disconnect the connection

between the testing leads and the circuit under test, and remove the testing leads away from the input terminals of the meter.

Figure 8

Figure 7

Page 10

Clamp Meter

TRMS

Page <10> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

G. DC/AC Current Measurement (see figure 9)

The measurement ranges of current are: 40.00 and 400.0

To measure current, do the following:

1. Set the rotary switch to 40 or 400

DC measurement mode is a

default. Press SELECT to switch between DC and AC measurement mode.

2. Hold the meter tight, don’t release. The hall components are very sensitive not

only to the magnet but also to heat and machines reaction force. Any shock will cause the changing in reading in the short time.

3. Press the lever to open the transformer jaw.

4. Center the conductor within the transformer jaw, then release the meter slowly

until the transformer jaw is completely closed, Make sure the conductor to be tested is placed at the center of the transformer jaw, otherwise it will casue deviation. The Meter can only measure one conductor at a time, to measure more than one conductor at a time will cause deviation.

Figure 9

Note

••

Press REL∆ to subtracts a stored value from the present measurement value and displays a result.

••

When current measurement has been completed, disconnect the connection between the conductor under test and the jaw, and

remove the conductor away from the transformer jaw of the meter.

Sleep Mode

To preserve battery life, the Meter automatically turns off if you do not turn the rotary switch or press any button for around 15 minutes.

The Meter can be activated by turning the rotary switch or pressing the button based on “The Effectiveness of Functional Buttons” on page 14. Press SELECT to activate the Meter will disable the Sleep Mode feature.

The Meter beeps 5 times in about 1 minute before entering Sleep Mode and it will have a 1 long beep just before entering Sleep Mode.

To disable the Sleep Mode function, press and hold SELECT button while turning on the Meter.

Page 11

Clamp Meter

TRMS

Page <11> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Specifications

A. General Specifications:

••

Maximum Voltage between any Terminals and grounding: Refer to different range input protection voltage.

••

Display: 3 3/4 digits LCD display, Maximum display 3999

••

Polarity: Automatically display.

••

Overloading: Display OL or –OL

••

Measurement Speed: Updates 3 times/second.

••

Measurement Deviation: The conductor being meaured is not placed in the center of the jawt during AC/DC current measurement, it

will cause extra 1% deviation based on the stated accuracy.

••

Drop Test: 1 meter drop test passed.

••

Max. Jaw Size: 28mm diameter.

••

Projected Max. Current conductor size: 26mm diameter.

••

Electro-Magnetic: When carrying out measurement near the electro-magnetic, it may cause unstable or wrong reading.

••

Power: 1 x 9V battery (NEDA1604 or 6F22 or 006P)

••

Battery Life: typically 150hours (alkaline battery)

••

Sleep Mode (can be disabled)

••

Dimensions (H x W x L): 208mm x 76mm x 30mm.

••

Weight: Approximate 260g (battery included)

B. Environmental Requirements

••

The Meter is suitable for indoor use.

••

Altitude: Operating: 2000m

Storage: 10000m

••

Safety/ Compliances: IEC 61010 CAT.II 600V, CAT.III 300V over voltage and double insulation standard.

••

Temperature and humidity: Operating: 0ºC to 30ºC ( 85%R.H); 30ºC to 40ºC ( 75%R.H); 40ºC to 50ºC ( 45%R.H);

Storage: -20ºC to +60ºC ( 85%R.H)

••

Battery Deficiency: Display

Page 12

Clamp Meter

TRMS

Page <12> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Accurate Specifications

Accuracy : ±(a% reading + b digits), guarantee for 1 year. Operating temperature : 23ºC ± 5ºC Relative humidity : ≤85%R.H Temperature coefficient : 0.1x(specified accuracy)/1ºC

Range Resolution Accuracy Overload Protection

400.0mV 0.1mV ±(0.8%+3)

600V DC/AC

4.000V 1mV

±(0.8%+1)

40.00V 10mV

400.0V 100mV

600V 1V ±(1%+3)

A. DC Voltage

Remarks: Input impedance: 10MΩ.

B. AC Voltage

Range Resolution Accuracy Overload Protection

4.000V 1mV

±(1%+5)

600V DC/AC

40.00V 10mV

400.0V 100mV

600V 1V ± (1.2%+5)

Remarks:

••

Input impedance: 10MΩ // less than 100pF

••

Frequency response: 40Hz to 400Hz.

••

Change to AC:

UT204:

Combine AC and True RMS response method. Input sine wave to adjust. Non sine wave must follow the below data to adjust: Peak factor: 1.4 to 2.0, add 1.0% on the stated accuracy Peak factor: 2.0 to 2.5, add 2.5% on the stated accuracy Peak factor: 2.5 to 3.0, add 4.0% on the stated accuracy.

Page 13

Clamp Meter

TRMS

Page <13> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

C. Resistance

Range Resolution Accuracy Overload Protection

400.0Ω 100mΩ ±(1.2%+2)

600Vp

4.000kΩ 1Ω

±(1%+2)

40.00kΩ 10Ω

400.0kΩ 100Ω

4.000MΩ 1kΩ

±(1.2%+2)

40.00MΩ 10kΩ ±(1.5%+2)

D. Diode Test

Range Resolution Accuracy Overload Protection

1mV Display forward voltage

drop nearest value

600Vp

Remark: Open circuit voltage approximate 1.48V.

E. Continuity Test

Range Resolution Accuracy Overload Protection

100mΩ Around ≤ 50Ω,

the buzzer beeps

600Vp

Remark:

••

Open circuit voltage approximate 0.45V.

••

The buzzer may or may not beeps when the resistance of a circuit under test is between 50Ω to 100Ω

••

The buzzer will not beep when the resistance of a circuit under test is >100Ω.

Page 14

Clamp Meter

TRMS

Page <14> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Range Resolution Accuracy Overload Protection

10Hz 0.001Hz

±(0.1%+3)

600Vp

100Hz 0.01Hz

1kHz 0.1Hz

10kHz 1Hz

100kHz

10Hz

1MHz 100Hz

10MHz 1kHz For reference only

F. Frequency

Remark:

Input Sensitivity as follows: When ≤ 100kHz: ≥ 300mV rms; When > 100kHz: ≥ 600mV rms When > 1MHz: ≥ 800mV rms

Range Resolution Accuracy Overload Protection

0.1% to 99.9% 0.1% For reference only 600Vp

G. Duty Cycle

H. DC Current

Range Resolution Accuracy Overload Protection

40.00A 0.01A ±(2%+5) 400A DC/AC

400.0A 0.1A ±(2%+3)

Page 15

Clamp Meter

TRMS

Page <15> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

Warning

The operating temperature must be 0ºC to 40ºC when measuring current.

Remark:

••

If the reading is positive, the current direction is from bottom to up. See figure 10, the front case face up while the bottom case

face down. Hold the Meter tight, do now release. The Hall components are very sensitive not only to the magnet but also to heat and machines reaction force. Any shock will cause the changing in reading in the short time. Follow the below procedure to measure current will be more precise:

••

Hold the Meter tight and press the lever to open the transformer jaw. Center the conductor within the transformer jaws, then release the Meter slowly until the transformer jaw is completely closed. Make sure the conductor to be tested is placed at the center of the transformer jaw, otherwise it will cause +1.0% deviation based on the stated accuracy.

••

Remove the transformer jaw.

••

Press REL

∆∆

to display zero.

••

Repeat the above 1. procedure.

••

The obtained reading will be more precise.

I. AC Current

Range Resolution Accuracy Frequency Response Overload Protection

40.00A 0.01A ±(2.5%+8) 50Hz to 60Hz

400A DC/AC

400.0A 0.1A ±(2.5%+5)

Warning

The operating temperature must be 0ºC to 40ºC when measuring current.

Remark:

••

It may have 10 digits or less unstable or wrong digits, it will not affect measurement result.

••

Hold the Meter tight, do now release. The Hall components are very sensitive not only to the magnet but also to heat and machines reaction force. Any shock will cause the changing in reading in the short time. Follow the below procedure to measure current will be more precise:

1. Hold the Meter tight and press the lever to open the transformer jaw. Center the conductor within the transformer jaws, then

release the Meter slowly until the transformer jaw is completely closed. Make sure the conductor to be tested is placed at the center of the transformer jaw, otherwise it will cause +1.0% deviation based on the stated accuracy.

2. Remove the transformer jaw.

3. Press REL

∆∆

to display zero.

4. Repeat the above 1. procedure.

5. The obtained reading will be more precise.

••

Change to AC:

UT204:

Page 16

Clamp Meter

TRMS

Page <16> 20/09/10 V1.1

http://www.farnell.com http://www.newark.com http://www.cpc.co.uk

MAINTENANCE

This section provides basic maintenance information including battery replacement instruction.

Warning

Do not attempt to repair or service your Meter unless you are qualified to do so and have the relevant calibration, performance test, and service information.

To avoid electrical shock or damage to the Meter, do not get water inside the case.

A. General Service

••

Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents.

••

To clean the terminals with cotton bar with detergent, as dirt or moisture in the terminals can affect readings.

••

Turn the Meter power off when it is not in use.

••

Take out the battery when it is not using for a long time.

••

Do not use or store the Meter in a place of humidity, high temperature, explosive, inflammable and strong magnetic field.

B. Replacing the Battery (see figure 10)

Warning

To avoid false readings, which could lead to possible electric shock or personal injury,

replace the battery as soon as the battery indicator appears.

Make sure the transformer jaw and the tets leads are disconected from the circuit being tested before opening the case bottom.

To replace the battery:

1. Turn the Meter off and remove all the connections from the input terminals

2. Turn the Meter’s front case down.

3. Remove the screw from the battery compartment, and separate the battery compartment from the case bottom.

4.Take out the old battery and replace with a new 9V battery (NEDA1604, 6F22 or 006P).

5. Rejoin the case bottom and the battery compartment, and reinstall the screw.

Disclaimer This data sheet and its contents (the "Information") belong to the Premier Farnell Group (the "Group") or are licensed to it. No licence is granted for the use of it other than for information purposes in connection with the products to which it relates. No licence of any intellectual property rights is granted. The Information is subject to change without notice and replaces all data sheets previously supplied. The Information supplied is believed to be accurate but the Group assumes no responsibility for its accuracy or completeness, any error in or omission from it or for any use made of it. Users of this data sheet should check for themselves the Information and the suitability of the products for their purpose and not make any assumptions based on information included or omitted. Liability for loss or damage resulting from any reliance on the Information or use of it (including liability resulting from negligence or where the Group was aware of the possibility of such loss or damage arising) is excluded. This will not operate to limit or restrict the Group's liability for death or personal injury resulting from its negligence. TENMA is the registered trademark of the Group. © Premier Farnell plc 2010.

Part Number Table

Description Part Number

Clamp Meter, TRMS UT-204