Extech 382068 Clamp on power datalogger User Manual

Table of Contents

Specifications

General Specifications …………………………………………………………. 3

Range Specifications……………………………………………………………. 3

Safety Information ……………………………………………….………………. 5

Meter and Display Descriptions………………………………..……….……… 6

Measurements

AC/DC Power Measurements………………………………………………….. 7

AC/DC Voltage Measurements………………………………………………… 16

AC/DC Current Measurements………………………………………….……… 17

Resistance and Continuity Measurements…………………………….……… 18

Diode Tests …………………….…………….……………………………..…… 19

Min/Max Mode ………………………………….……………………………..…… 19

Peak Detector ………………………………….……………………………..…… 19

Data Hold .………………………………….…………………………………..…… 19

Datalogging …………………………………….……………………………...…... 20

Maintenance

Battery Replacement..………………………………….…………………..…… 21

Cleaning ………………………………….……………………………..……….. 21

Repair and Calibration Services ………………………………………….……. 21

Tech Support Hotlines..………………………………….………………………. 21

Introduction

Congratulations on your purchase of the Extech 382065/382068 Datalogging AC/DC Power Clampon Meter. Measurements include DC and AC True Power, Apparent Power, Power Factor, and True

RMS Voltage, Current, & Watts. Status indication for Lead/Lag and PF is included as well as dual displays of KW + PF, KVA + PF, V + A, A + Hz, and V + Hz. The frequency of Voltage and Current measurements can be displayed also. Datalogger and PC interface features are built into the meter.

The Datalogger/Data Acquisition Software package is for exclusive use with the Model

382065/382068 Clamp on Power Datalogger. Windows® XP, Vista, Window’s 7-32 bit, and 7-64 bit operating systems are supported. Users can download readings stored in the datalogger to a PC, program sample rates for datalogging, remotely monitor readings, and save readings to ASCII files for export to spreadsheet and other programs. Careful use will provide years of reliable service.

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Specifications

General Specifications

Main display

Bargraph display

Datalogger

Peak hold

Maximum voltage

Meter power

4-digit (10,000 count) multi-function LCD

40-segment bargraph

4000 data point continuous logging (25 point manual logging) with MIN / MAX and Peak detect recording

Built-in detector captures positive and negative peaks to .1ms

600Vrms between any terminal and earth ground

9V battery

Battery life

Low battery indication

Auto power off

Display update rate

30 hours (approx.)

Battery icon is displayed

After 30 minutes (approx.)

Jaw opening

2 times per second (Bargraph); 5 times per second (Digits),

(once every 6 seconds for the KW function)

For Cables φ 1.8” (46mm)

32 to 122 o

F (0 to 50 o

C) Operating temperature

Operating Humidity

Storage temperature

Storage Humidity

Dimensions/Weight

R.H. < 80% non-condensing.

14 o

to 140 o

F (-10 to 60 o

C)

RH < 70% non-condensing

10.24 x 3.66 x 1.77" (260 x 93 x 45mm) / 1 lb. (450g)

Accessories

Range Specifications

Carrying case, test leads, and 9V battery

Accuracy specs are

± (reading + no. of digits) at 64 o

to 82 o

F (18 o

to 28 o

C) and RH to 80%

True power & Apparent power measurements (600KW Max.)

Overload protection

V<130V, A<150A

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ACA

Overload protection

1100A 2 to 1000A 0.1A

±

(1.5% + 5)

Crest factor < 3 for stated accuracy

DCV

Range Resolution Accuracy

2 to 600V 0.1V

±

(0.5% + 5)

45Hz to 500Hz

Input impedance

1MΩ

Overload protection

600V

ACV

Range Resolution Accuracy

Input impedance

2 to 600V 0.1V

± (0.5%+5)

Crest factor < 3 for stated accuracy

1MΩ

Frequency range

Overload protection

45Hz to 500Hz 600Vrms

Peak indication

Range Resolution Accuracy Overload

20A~80A 0.1A

80A~1000A 0.1A

±

(10% + 10)

±

(6% + 10)

1100A

1100A

Peak detect acquisition time .1ms

Peak indication

Range Resolution Accuracy Overload

20V~80V 0.1V

±

(10% + 10) 600Vrms

80V~600V 0.1V

Peak detect acquisition time .1ms

± (6% + 10) 600Vrms

Audible continuity

Range

Continuity beeper

< 50 Ω

Open circuit voltage

Overload protection

3.2V 600Vrms

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Safety Information

1. Read the following safety information carefully before attempting to operate or service the meter.

2. Read all operating instructions before use.

3. To avoid damage to the instrument do not exceed the published input limits.

4. Do not use the meter or test leads if they appear damaged. Use extreme caution when working around bare conductors or bus bars. Accidental contact with a conductor could result in electric shock.

5. Use the meter only as specified in this manual otherwise the protection provided by the meter may be impaired.

6. Use caution when working with voltages above 60VDC or 30VAC RMS. Such voltages pose a shock hazard.

7. Before taking resistance or continuity measurements, disconnect the circuit from the main power supply and disconnect all loads from the circuit.

8. Safety Specifications:

• Installation categories III

• Pollution degree 2

• Altitude: 2000m max

• Indoor use only

Safety symbols

Caution: Refer to this manual before using the meter.

Dangerous voltages.

Meter is protected throughout by double insulation or reinforced insulation.

When servicing, use only specified replacement parts.

Complies with EN-61010-1, IEC 1010-2-32

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WL123 MEM READ

3 3W

P P-

3 4W

PF lead lag

HOLD MAX MIN

Hz

KVA

RECORD

K

KW

KVA

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AC/DC Power Measurements

AC/DC 1

φ2W Power (W) and Power Factor (PF) Measurements

600V

HOLD

Hz

1000A

V OFF

KW

3 3W

3 4W

PF lag

KW

600V MAX CAT

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Note: When calculating KVAR, the KVAR accuracy greatly depends on V, A and KW measurement accuracy (especially when PF is very close to 1). To get a more accurate value when PF is greater than 0.91 (φ < 25°), use the following equation for a pure sine wave

PF

=

KW

KVA

KVA (Apparent Power): KVA =

V

* A

1000

KVAR (Reactive Power): KVAR=

(KVA)

2

−

(KW)

2

Note

: The "+" sign printed on the jaw must face the power source.

3φ3W AC/DC Power Measurement

WL12

3 3W

WL12

3 3W

PF lag

KW

600V MAX CAT

Figure 4

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A. With the Clamp jaws empty

, turn the meter on by setting the rotary switch to the 3φ3W position.

WL12

will appear on the upper left side of the LCD prompting the user to take a

W

RS (L2 L1)

measurement.

1. Insert the test leads into the input terminals (black to COM terminal and red to '+').

2. Select one phase (eg. S or L2) as COM and connect the probe end of the black lead to that phase (eg. S or L2).

3. Connect the probe end of the red test lead to the second phase (eg. R or L1).

4. Clamp the meter onto the same phase as the red test lead (eg. R or L1).

5. The meter will automatically select the proper range.

6. Wait until the reading is stable (about 6 seconds), and then press the READ button. WL23 will appear prompting the user to take a measurement of W

TS

(W

L3 L2

).

B. Measure W

TS (L3 L2)

(refer to figure 5).

1. Disconnect the red test lead from the phase where the clamp is connected.

2. Connect the red test lead to the third phase (eg. T or L3).

3. Clamp onto the third phase (where the red test lead is connected; eg. T or L3).

4. The meter will automatically select the proper range.

5. Wait until the reading is stable (about 6 seconds) and then press the READ button.

C. The power clamp will process these measurements and display the result. WL123 appears in the upper left corner of the LCD and the 3φ3W power measurement is displayed in watts (this value is now stored in meter memory). The following equations are provided for your information.

W

3

φ3W

= W

RS(L1L2)

+ W

TS(L3L2)

KVA

3

φ

3

W

=

K

W

2

3

φ

3

W

+

KVAR

2

3

φ

3

W

PF

3

φ

3

W

=

KW

3

φ

3

W

KVA

3

φ

3

W

Notes:

1.

Once a phase is designated as common (COM) it should remain as such in all subsequent measurements. For example, if the S (or L2) phase is selected, S

(or L2) phase is connected to COM during the measurements of W

RS

(or

W

L1L2

) and W

TS

(or W

L3L2

) in 3φ 3W unbalanced power.

2.

The "+" sign printed on the jaw must face the power source.

3.

In 3φ3W unbalanced power measurements, if either WRS or WTS is negative

(connection error) ensure that all test lead and clamp connections are correct.

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WL123

3 3W

PF lag

KW

600V MAX

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3

φ4W AC/DC Power Measurement

KW

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WL 3

3 4W

PF lag

KW

600V MAX CAT

600V MAX CAT

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A. Measure W

R (L1)

/ P

FR (L1)

(refer to figure 6).

1. With the jaw enclosure empty, turn the meter on by setting the rotary switch to the 3φ4W position.

2. Insert the test leads into the input terminals (black lead to the COM terminal and red to '+').

3. Connect the black lead's probe end to the neutral line.

4. Connect the red lead's probe end to the first phase (eg. R or L1).

5. Clamp on to the same phase as the red test lead (eg. R or L1).

6. The meter will automatically select the proper range.

7. Wait until the reading is stable (about 6 seconds) then press the READ button. WL1 will disappear and WL2 will appear prompting the user to take a W

S (L2)

/ P

FS (L2) measurement.

B. Measure W

S (L2)

/PF

S (L2)

(refer to figure 7)

1. Disconnect the red test lead from the phase where the jaws are clamped.

2. Connect the red test lead to the second phase (eg. S or L2).

3. Clamp onto the phase where the red test lead is connected (eg. S or L2 phase)

4. The meter will automatically select the proper range.

5. Wait until the reading is stable (about 6 seconds) then press the READ button. WL2 will disappear and WL3 will appear prompting the user to take a W

T (L3)

/ P

FT (L3)

measurement.

C. Measure W

T (L3)

/P

FT (L3)

(refer to figure 8)

1. Disconnect the red test lead from the phase where the meter's jaws are clamped.

2. Connect the red test lead to the third phase (eg. T or L3 phase).

3. Clamp onto the phase where the red test lead is now connected (eg. T or L3).

4. The meter will automatically select the proper range.

5. Wait until the reading is stable (about 6 seconds) and then press the READ button. WL3 will disappear from the upper left hand area of the LCD.

6. The meter will process these three sets of data (refer to figure 9) and display the 3φ4W power measurement (WL123 will be displayed). The 3φ4W measurement will then be stored in memory. The following equations are provided for your information.

W

3

φ4W

= W

R(L1)

+ W

S(L2)

W

T(L3)

KVA

3

φ

4

W

=

K

W

2

3

φ

4

W

+

KVAR

2

3

φ

4

W

PF

3

φ

4

W

=

KW

3

φ

4

W

KVA

3

φ

4

W

Notes:

1. The "+" sign printed on jaw must face the power source.

2. For 3φ4W power measurements, WR or WS and WT must be positive. If any are negative, check the test lead and clamp connections for polarity errors.

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1

φ3W Power Measurement

WL12

3 3W

PF lag

KW

600V MAX CAT

KW

600V MAX CAT

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1φ3W power measurements are similar to 3φ3W unbalanced power measurement except for the nomenclature. Two measurements are required:

(L1G)

and W

TS (L2G)

.

A. Measure W

RS (L1G)

(refer to figure 11).

1. With the Clamp jaws empty, turn the meter on by setting the rotary switch to the 3φ3W position.

2. Insert the test leads into the input terminals.

3. Connect the probe end of the black lead to ground.

4. Connect the probe end of the red lead to the second phase (eg. L1).

5. Clamp onto the second phase (eg. L1).

6. The meter will automatically select the proper range.

WL123

3 3W

PF lag

600V

HOLD

MAX CAT

KW

W

RS

7. Wait until the reading is stable (about 6 seconds) and then press the READ button.

8. WL23 will appear prompting the user to take the

W

TS (L2G)

measurement.

Figure 13

B. Measure W

TS

or W

L2G

(refer to figure 12).

1. Disconnect the red test lead from the phase where the jaws are clamped.

2. Connect the red test lead to the L2 line.

3. Clamp onto the L2 line (where the red test lead is connected).

4. The meter will automatically select the proper range.

5. Wait until the reading is stable (about 6 seconds) and then press the READ button.

C. The power clamp sums the

two values, displays the result, and stores the 1φ3W power measurement in memory. Note the following equation:

W

1

φ3W

= W

RST

= W

RS(L1G)

+ W

TS(L2G)

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Current and Voltage Measurements

AC, DC, and AC+DC Voltage Measurements

Hz

HOLD

V

1000A

KW

OFF

3 3W

3 4W

Hz

V

600V MAX CAT

Figure 14

Warning:

The maximum input is 600V. Do not attempt to take voltage measurements that exceed this limit; electrical shock and damage to the clamp meter can result.

1. Set the rotary switch to the 'V' position (refer to figure 14).

2. Insert the test leads into the input terminals (black lead to COM and red to '+').

3. Connect the probe ends of the test leads in PARALLEL to the circuit to be measured.

4. The meter will automatically select the appropriate range and units (AC or DC).

5. Read the voltage and frequency values displayed on the LCD.

Note:

The sensitivity for frequency measurements is 10V. The frequency range is 45 –

500Hz. If the frequency is less than 45 Hz, the LCD will display "------".

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AC, DC, and AC+DC Current Measurements

A

HOLD

Hz

1000A

V OFF

KW

3 3W

3 4W

Hz

A

Hz

A

600V CAT

600V MAX CAT

Figure 15

1. Set the rotary switch to the '1000A' position (refer to figure 15).

2. For DC, press and hold the ZERO button until a beep is heard to zero the reading; the LCD will display “- - - -” while zeroing.

3. Press the trigger to open the jaw.

4. Fully enclose the conductor to be measured. Do not allow a gap between the two jaw halves when measuring.

5. The clamp will automatically select the appropriate range.

6. Read the current and frequency values displayed on the LCD.

Note:

The current sensitivity for frequency measurements is 10A. The frequency range is 45 - 500Hz. If the frequency is less than 45 Hz, the LCD will display "------"

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Resistance and Continuity Measurements

Warning:

Before taking any in-circuit resistance measurements, remove power from the circuit under test and discharge all capacitors.

1. Set the function switch to the Ω position for both resistance and continuity measurements.

2. Connect the black test lead to the COM terminal and the red test lead to the '+' terminal.

3. Connect the test leads to the circuit being measured and read the displayed resistance value.

Refer to Figure 16.

4. For Continuity measurements, an audible tone will sound when the reading is below 50Ω.

Hz

HOLD

V

1000A

KW

3 3W

3 4W

OFF

600V MAX CAT

K

Figure 16

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Diode and Continuity Measurements

1. Connect red test lead to the "+" terminal and black test lead to the "COM" terminal.

2. Set the range switch to the diode test position " ".

3. Connect the red test lead to the anode side and black test lead to the cathode side of the diode being tested.

4. Read the forward voltage value on LCD. The value for a good diode is 0.3VDC for germanium diodes and 0.7VDC for silicon diodes.

5. If the test lead connection is reversed, the digital reading should reflect an open circuit condition if the diode is good.

6. Continuity measurement: When the reading is below 50mV an audible tone will sound.

MIN/MAX Recording

1. Set the Function Switch to the Voltage or Current position.

2. To record and view MIN and MAX values while taking measurements, press the MIN MAX button.

3. Now while measurements are being taken, the display only the MIN or the MAX reading. Use the MIN MAX button to toggle between MIN and MAX readings. The LCD will display MIN or

MAX as selected.

4. To exit this mode, press and hold the MIN MAX button until the MIN and MAX display icons disappear from the LCD.

Peak Detection

Peak Detect mode is used to capture fast transients signals (to 0.1ms) such as those caused by motor startup surges or arc welding equipment switching.

1. Set the Function Switch to the Current or Voltage position.

2. Engage the Peak detector by pressing and holding the READ button until a short beep is heard.

(Note that if the button is held longer, a longer beep will sound and the meter will be in the datalogging view mode; refer to the datalogging section for more info).

3. The LCD will display 'P-P+' when the Peak Detect mode is accessed correctly. Use the PEAK button to toggle between ' P+ Max' (captures positive polarity peaks) and 'P- MIN' (captures negative polarity peaks).

4. To exit the Peak mode, press and hold the PEAK button for two seconds (until the P- and P+ icons disappear).

5. Take a Voltage or Current measurement on a transient signal and the display will show the peak of the pulse. The fastest surge the meter can detect is 0.1ms.

Data Hold

1. To freeze a displayed reading, press the HOLD key.

2. The HOLD icon will appear on the top of the LCD to let the user know that the meter is in the

Data Hold mode.

3. To return the meter to the normal operation mode, press the HOLD key again. The HOLD icon will extinguish.

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Datalogging

Single mode

1. Single mode datalogging records one reading at a time.

2. To record one reading, press the RECORD key until one beep heard. (Note that if the button is held longer, 2 beeps will sound and the meter will be in continuous mode; see below). The record number (1 through 25 or FULL) will briefly appear on the LCD.

3. The meter can store up to 25 readings. When the memory is full, FULL will display.

4. To view the readings, press and hold the READ button until two tones are heard. The second tone is longer and louder than the first.

5. Now use the yellow and keys to scroll through the recorded readings.

Continuous mode (for use with PC interface only)

1. In continuous mode the meter records one reading after another automatically. Up to 4000 records can be recorded.

2. Press and hold the RECORD until two tones are heard (not available in 3φ3W and 3φ4W function positions). The meter will begin recording data and the RECORD icon will appear on the LCD.

3. To exit the Record mode, press and hold the RECORD button until the RECORD display icon disappears.

4. Readings can only be transferred to a PC with optional Windows® software and interface cable.

Instructions for use are provided with optional software/hardware kit.

Clearing Datalog Data

1. Turn the meter off and hold down the RECORD button while turning the meter on.

2. Release the RECORD key when CLR appears. The datalog memory is now clear.

Maintenance

Battery Replacement

Warning: To prevent electrical hazard or shock, turn off the clamp meter and disconnect the test leads before removing the back cover.

When the 9V battery expires, the LCD will display the battery icon. To replace the battery:

1. Set the Range switch to the OFF position.

2. Remove the meter's three rear screws and carefully open the meter housing.

3. Replace the 9V battery and re-assemble the meter housing.

Cleaning

Periodically wipe the case with a dry cloth; do not use abrasives or solvents.

Copyright © 2011 Extech Instruments Corporation

All rights reserved including the right of reproduction in whole or in part in any form.

more infor for

Extech 382068

Phone: 01235 838 555

Email: [email protected]

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