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MA140

en

GB_V1.0

   

1/15

 

7

Inrush

 

Current

 

Mode

 

In

 

the

 

Inrush

 

mode

 

the

 

meter

 

waits

 

until

 

at

 

least

 

5A

 

is

 

detected

 

and

 

then

 

starts

 

a

 

100ms

 

sample

 

window

 

in

 

which

 

to

 

capture

 

an

 

inrush

 

current

 

RMS

 

value.

 

Refer

 

to

 

illustration

 

below.

 

1.

 

Press

 

and

 

hold

 

the

 

INRUSH

 

button

 

for

 

>

 

2

 

seconds

 

to

 

access

 

the

 

Inrush

 

Current

 

mode.

 

2.

 

The

 

display

 

will

 

show

 

the

 

INRUSH

 

icon.

 

3.

 

When

 

ready,

 

take

 

a

 

current

 

measurement.

 

The

 

meter

 

will

 

capture

 

the

 

highest

 

reading

 

detected

 

during

 

a

 

100ms

 

window.

 

Note

 

that

 

the

 

100ms

 

window

 

does

 

not

 

open

 

until

 

at

 

least

 

5A

 

is

 

detected.

 

4.

 

To

 

exit

 

the

 

Inrush

 

Current

 

mode

 

press

 

the

 

INRUSH

 

button

 

again

 

momentarily.

 

The

 

INRUSH

 

icon

 

will

 

switch

 

OFF.

 

  

100ms Sample Window

Measured Inrush

Sample time
trigger

Inrush
Button
Press

Current

Start

Stop

Threshold

 

Low

 

Pass

 

Filter

 

The

 

Low

 

Pass

 

Filter

 

mode

 

offers

 

high

 

frequency

 

rejection

 

when

 

measuring

 

Variable

 

Speed

 

Drives.

 

The

 

Low

 

Pass

 

Filter

 

mode

 

offers

 

a

 

cut

off

 

frequency

 

of

 

160Hz

 

(approx.)

 

with

 

an

 

attenuation

 

characteristic

 

of

 ‐

24db

 

per

 

octave

 

(approx.).

  

1.

 

Momentarily

 

press

 

the

 

LPF

 

button

 

to

 

access

 

the

 

LPF

 

mode

 

2.

 

The

 

LPF

 

display

 

icon

 

is

 

shown

 

on

 

the

 

display

 

in

 

the

 

LPF

 

mode

 

3.

 

Press

 

the

 

LPF

 

button

 

again

 

to

 

exit

 

the

 

LPF

 

mode,

 

the

 

LPF

 

icon

 

will

 

switch

 

OFF

 

 

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Summary of Contents for MA140

Page 1: ...USER GUIDE True RMS 300A AC Mini Clamp Meter with Non Contact Voltage Detector Model MA140 www com information itm com 800 561 8187...

Page 2: ...Individual protective equipment should be used if HAZARDOUS LIVE parts in the installation where measurements are to be carried out could be accessible If the equipment is used in a manner not specifi...

Page 3: ...TEGORY I Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in which measures are taken to limit the transient over voltages to an appropriate low level Note Examples include...

Page 4: ...play digits 3 In Rush Current mode 4 Low Pass Filter 5 Data Hold 6 AC Measurement 7 Amperes current 8 Battery status icon 9 Minus negative sign Control Button Description Press for 2 seconds to access...

Page 5: ...o the next section Note The meter displays the battery capacity when powering up Disable Auto Power OFF The meter will auto power OFF after 20 minutes of inactivity To defeat this feature follow the s...

Page 6: ...ess the AC Current measurement mode The A symbol will appear on the display in the lower right hand side indicating Amperes Amps 2 Press the jaw trigger to open the clamp jaw 3 Position the clamp arou...

Page 7: ...ast 5A is detected 4 To exit the Inrush Current mode press the INRUSH button again momentarily The INRUSH icon will switch OFF 100ms Sample Window Measured Inrush Sample time trigger Inrush Button Pre...

Page 8: ...ontact Voltage Detect mode 2 Note the voltage detection display icons as shown in the Description section of this guide 3 Place the meter near a source of electrical energy The tip of the clamp offers...

Page 9: ...teries observing correct polarity 4 Re assemble the meter before use 5 Safety Please dispose of batteries responsibly never dispose of batteries in a fire batteries may explode or leak never mix batte...

Page 10: ...tion Accuracy of reading Inrush Current 300 0 A 0 1 3 5 5 digits Integration time 100ms Trigger current threshold 5A Volt Detection 80V 600VAC n a n a The tip of the clamp offers the optimum sensitivi...

Page 11: ...ture Coefficient 0 2 x specified accuracy C 20 C 68 F 26 C 79 F Operating Altitude 2000m 6562ft Battery power 2 LR 44 1 5V batteries battery life 50 hours typical Weight 140g 4 9 oz Dimensions 60 x 14...

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