KYORITSU KEW 2510 User manual

Instruction Manual
KEW 2510
DC Milliamp Clamp Logger
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Contents
1 ． Safety warnings …………………………………………………… 1
2
． Features …………………………………………………………… 4
3
． Specifications …………………………………………………… 4
4
． Instrument layout ………………………………………………… 6
5
． Preparation ………………………………………………………… 6
6
． Getting started …………………………………………………… 7
6 － 1 Zero-adjustment ………………………………………… 7
6 － 2 Measurement …………………………………………… 7
7
． Other functions …………………………………………………… 8
7 － 1 Data Hold function ……………………………………… 8
7 － 2 Auto-power-off function ………………………………… 8
7 － 3 Backlight & LED light …………………………………… 9
7 － 4 Analog output function ………………………………… 9
7 － 5 Memory function ………………………………………… 9
8
． Communication function/ Application software …………… 10
9
． AC adapter power supply …………………………………… 11
9 － 1 How to use AC adapter ……………………………… 11
9 － 2 Specifications of AC adapter ……………………… 11
10
． Battery replacement ………………………………………… 12
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 1 
1．Safety warnings
○
This instrument has been designed, manufactured and tested
according to IEC 61010
: Safety requirements for Electronic
measuring apparatus, and delivered in the best condition after
passing quality control tests. This instruction manual contains
warnings and safety rules which have to be observed by the user to
ensure safe operation of the instrument and to maintain it in safe
c o n d it i o n . T h e r efo r e , re a d t h ro u g h t h e s e o p e r a t i n g i n s t r u c ti o n s b e f o r e
starting to use the instrument.
#  WARNING
●
Read through and understand the instructions contained in this
manual before starting to use the instrument.
●
Keep the manual at hand to enable quick reference whenever
necessary.
● The instrument is to be used only in its intended applications.
● Understand and follow all the safety instructions contained in the
manual.
It is essential that the above instructions are adhered to. Failure to
follow the above instructions may cause injury, instrument damage
and/or damage to equipment under test. Kyoritsu is by no means
liable for any damage resulting from the instrument in contradiction to
these cautionary notes.
○ The symbol # indicated on the instrument means that the user must
refer to the related parts in the manual for safe operation of the
instrument. It is essential to read the instructions wherever the
symbol appears in the manual.
#  DANGER ： is reserved for conditions and actions that are likely
to cause serious or fatal injury.
#  WARNING：
is reserved for conditions and actions that can
cause serious or fatal injury.
#  CAUTION：
is reserved for conditions and actions that can
cause injury or instrument damage.
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 2 
Please refer to the following explanation of the symbols used on the
instrument and in this manual.
#
Use r mu st refe r to the explan ations in th e in struction man ual.
Application around hazardous live conductors is NOT
permitted.
Crossed-out wheel bin symbol (according to WEEE
Directive: 2002 / 96 /EC) indicating that this electrical
product may not be treated as household waste, but that it
must be collected and treated separately.
#  DANGER
● Never make measurements on a circuit in which earth potentials of
45 Vpk or higher exist.
●
Do not attempt to make measurements in the presence of
flammable gasses. Otherwise, the use of the instrument may cause
sparking, which can lead to an explosion.
● N eve r atte mpt to use the instrument if its surface o r your ha n d is wet.
● Do not exceed the maximum allowable input of any measuring range.
● Never open the battery compartment cover during a measurement.
● Never attempt to make any measurements if the clamp sensor and/
or the instrument has any structural abnormality, such as a crack,
or if the cover is not securely attached.
● Do not measure AC currents.
● The instrument should be used only in its intended applications or
conditions. Otherwise, safety functions equipped with the
instrument do not work, and instrument damage or serious personal
injury may be caused.
●
Keep your hands and fingers behind the safety barrier on clamp
sensor during a measurement.
#  WARNING
●
Never attempt to make any measurements if any abnormal
conditions, such as a broken cover or exposed metal parts are
present on the instrument and clamp sensor.
●
Do not install substitute parts or make any modifications to the
in st r u me nt . Retu r n t h e in st ru me n t to yo u r lo c al K YO R I T S U dist ribu to r
for repair or re-calibration in case of suspected faulty operation.
● Do not try to replace batteries if the surface of the instrument is wet.
●
Ensure that the Clamp sensor is disconnected from the object
u n d er te st , a n d that th e instru me nt is p owere d off w he n o pe nin g th e
battery compartment cover for battery replacement.
● Radio waves at Bluetooth communication may affect the operations of
medical electronic devices. Special care should be taken when using
B l u e t o o t h c o m m u n i c a ti o n i n t h e a r e a s w h e r e s u c h d e v i c e s a r e p r e s e n t .
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 3 
#  CAUTION
● Do not expose the instrument to direct sunlight, high temperature,
humidity or dew.
● This instrument is not water/ dust-proof. Do not use it in a dusty
environment or where it will get wet.
● Always power off the instrument after use. Remove batteries if the
instrumentis to be stored and will not be in use for a long period.
● Use a damp cloth with neutral detergent or water for cleaning the
instrument. Do not use abrasives or solvents.
○ Measurement Category
To ensure safe operation of measuring instruments, IEC
61010
establishes safety standards for various electrical environments,
categorized as O to CAT IV, and called measurement categories.
Higher-numbered categories correspond to electrical environments
with greater momentary energy, so a measuring instrument designed
for CAT III environments can endure greater momentary energy than
one designed for CAT II.
KEW 2510 is CAT O rate d . Do n ot u s e in CAT I I , I II o r I V e nviro n me nts .
O ： Circuits which are not directly connected to the mains power
supply.
CAT Ⅱ：
Electrical circuits of equipment connected to an AC
electrical outlet by a power cord.
CAT Ⅲ：
Primary electrical circuits of the equipment connected
directly to the distribution panel, and feeders from the
distribution panel to outlets.
CAT Ⅳ： The circuit from the service drop to the service entrance,
a n d to th e p owe r mete r a n d p rima ry ove r- c u rre nt p rote ctio n
device (distribution panel).
O: Device which is
not directly
connected to the
mains power supply
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 4 
2．Features
● Measure 4 to 20 mA instrumentation signal
● Measure 0 to 100 mA DC current without breaking the loop
● LED light for illuminating the measurement spot
● Auto-power-off function
● Percentage (%) span
● Analog output function to output the measured results to a recorder
or digital multi-meter
● Data hold function
● Memory function stores up to 192000 records
● Transfer data to PC via BluetoothⓇ
● AC adapter supplied as a standard accessory
3．Specifications
● Measuring range and accuracy ( 23 º C ± 5 º C, RH 75 % or less)
( 1 )DC current (auto-range)
Range Display range Guaranteed accuracy Accuracy Condition
20 mA 0 . 00 ～± 21 . 49 mA 0 . 00 ～± 21 . 49 mA ± 0 . 2 %rdg ± 5 dgt
After Zero-
adjustment
d e s c r i b e d a t
clause 6 - 1 .
100 mA ± 21 . 0 ～± 126 . 0 mA ± 21 . 0 ～± 120 . 0 mA ± 1 . 0 %rdg ± 5 dgt
※ Cautions for a long period of measurement or recording:
・ A b o u t 10 min of warm up is required right after powering on the
instrument.
・ Temperature coefficient defined later in this manual and also zero
point flu ctuatio n – a bout 20 c ou nts with a 10 º C rise in te mp e ratu re
- should be taken into consideration if ambient temperature varies
during a recording.
( 2 )Analog output function
Output DC voltage ( 10 mV/mA) corresponding to a reading.
Range Display range Output voltage Accuracy
20 mA 0 . 00 ～± 21 . 49 mA 0 . 0 ～± 214 . 9 mV
A c c u r a c y s p e c i f i e d a t c l a u s e
3 ( 1 ) plus ( ± 0 . 5 mV)
100 mA ± 21 . 0 ～± 126 . 0 mA ± 210 ～± 1260 mV
A c c u r a c y s p e c i f i e d a t c l a u s e
3 ( 1 ) plus ( ± 3 mV)
※ 1300 m V i s o u t p u t w h e n t h e d i s p l a y s h o w s ” OL ” . ( - 1300 m V f o r “ -OL ” .)
See clause 6 for explanations on OL display.
※ Output impedance : approx. 5 k Ω
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 5 
● Applicable standards IEC 61010 - 1
Measurement CAT O (Other), Pollution degree 2
IEC 61010 - 2 - 032
IEC 61326 - 1 (EMC)
IEC
60529 IP 40
EN 50581 RoHS Directive
● Display Liquid crystal display
(See also
“ 4 . Instrument layout ” .)
● Refresh rate Approx. once/ 0 . 6 second
● Sampling rate Approx. 4 ms
(Averaging data in about
0 . 6 sec.)
● Location for use In-door use, altitude 2000 m or less
● Operating temperature - 10 to + 50 º C RH 85 % or less (no condensation)
& humidity When using AC adapter:
0 to + 40 º C RH 85 % or less (no condensation)
● Storage temperature - 20 to + 60 º C RH 85 % or less (no condensation)
& humidity
● Power source Size AA battery x 4 pcs
(Alkaline LR
6 is recommended.)
External supply (AC adapter MODEL
8320 )
● Battery life Approx. 50 h o u r s c o n t i n u o u s w i t h a l k a l i n e b a t t e r i e s
(with Ba c kligh t, LE D light a n d Bl u eto oth Ⓡfe a t u re O F F )
● Auto-power-off Power off function op e rates in 10 min after the last
switch operation. This function is disabled when a
cord is being connected to the OUTPUT terminal
and memory function to record results is activated .
● Temperature 0 . 1 x specified accuracy/ º C
coefficient (above 28 º C or below 18 º C)
● Withstand voltage 2210 V AC for 5 sec
(between electrical circuit and enclosure)
● Insulation resistance 100 M Ω or more/ 1000 V
(between electrical circuit and enclosure)
● Rated voltage 42 Vpk (circuit – ground)
● Conductor size Max. Ф 6 mm
● Dimension 111 (L) x 61 (W) x 46 (D)mm
● Weight Approx. 310 g (including batteries)
● Accessory Soft case MODEL 9096 ･････････････････ 1 pce
Size AA Alkaline battery LR
6 ･･･････････ 4 pcs
Instruction manual
･･･････････････････････ 1 pce
AC adapter MODEL
8320 ･･･････････････ 1 pce
CD-ROM (KEW Windows for
2510 ) ････ 1 pce
Software installation manual
････････････ 1 pce
● Optional accessory Analog output cord MODEL 7256
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 6 
4．Instrument layout
5．Preparation
（ 1 ）
Power on the instrument, and then check smooth opening and
closing of clamp sensor.
（ 2 ）
When operating the instrument with battery, always check the
battery voltage, without connecting the AC adapter, before
starting to use the instrument. Battery mark doesn ’ t appear
regardless of battery status while the AC adapter is connected to
the instrument.
Press Power button and get the instrument started. If empty battery
indicator “ ” appears in the LCD, replace the batteries with new
ones according to “ 9 . Battery replacement ” in this manual.
（ 3 ）
Ensure that the Data hold function is not in active status.
Zero adjustment
(0 ADJ.) button
Memory
(MEM) button
Light button
Data hold button
Power button
Trigger
LCD
Analog output
terminal
Transformer
jaws
Polarity mark
Main unit Clamp sensor
Battery mark
Hold mark
Zero adj. mark
Sub display
Main display
LCD
LED light
Barrier
Bluetooth®mark
Memory mark
External supply
connection terminal
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 7 
6．Getting started
#  WARNING
●
Do not clamp onto an un-insulated conductor.
● A lways u s e a n alo g o ut p u t c o rd M O D E L 7256 , s p e cia lly d e s ign e d to
this instrument, when using analog output function.
#  DANGER
●
Keep your fingers and hands behind the barrier during a
measurement.
#  CAUTION
●
Dirty clamp sensor may cause false reading. Confirm that clamp
sensors are clean before making a measurement.
● When performing zero a djustment in order to minimize the influ ence
of electromagnetic waves, bring a clamp sensor close to the
conductor under test.
● Take sufficient care not to apply shock, vibration or excessive force
whenopening and closing the clamp sensor. Otherwise, accurate
results may not be obtained. Please open and close the sensor
lightly.
６−１Zero-adjustment
Perform zero adjustment prior to starting a measurement.
With the transformer jaws closed and without clamping them onto a
conductor, press the Zero ADJ. button.
Then the Zero adjustment mark “ ” is shown on the LCD for
about
1 sec.
Zero ADJ. button is disabled while;
・ the LCD showing “ OL ” , or
・ recording results with memory function.
６−２Measurement
Press the trigger to open the transformer jaws and clamp them onto a
conductor under test and take the
reading shown in main display area.
(See the figure below.)
• When a current flows in the same
direction a s in dic ate d by th e arrow
mark on the jaws, the polarity of
the reading is positive and vice
versa.
correct wrong
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 8 
※ % (Span) display
T h e su b dis play s h ows p erc e ntage value a s th e ba sis of 4 mA is 0 % a n d
20 mA is 100 %. (at 20 mA range only)
The table at the right shows the
relationship between %(Span)
v a l u e s a n d m e a s u r e d v a l u e s (m A ) .
The percentage value is
calculated based on the
following formula, assuming the
measured value as X.
Percentage = (
￨ X ￨ - 4 . 00 ) × 6 . 25
Measured
values (mA
）
Percentage
display (%)
－ 20 . 00 100 . 0
0
. 00 － 25 . 0
2
. 00 － 12 . 5
4
. 00 0 . 0
12
. 00 50 . 0
20
. 00 100 . 0
100
. 0 －－－
※
Over-limit indication
When a measured value exceeds the max display range ( 126 . 0 mA),
"OL" or “ -OL ” (for negative values) is indicated on the display.
Wh e n th e ra n ge re ac h e s to 100 mA , ba rs (- - -) a re dis playe d inste a d of
percentage values.
7．Other functions
７−１DataHoldfunction
This is a function to freeze the measured value on the display. Press
the Data hold button once to freeze the reading. The reading will be
held regardless of subsequent variation in input. The Data hold mark “
"is indicated on the display while the instrument is in the Data
Hold mode. To exit Data Hold mode, press the Data hold button again.
７−２Auto-power-offfunction
The instrument automatically powers off about 10 min after the last
operation. This function is disabled if the cord is being connected to
the analog output terminal or while recording measured data with
memory function.
Todisablethisfunction:
Hold down the Data hold button while powering on the instrument.
The LCD shows “ P.o FF ” for about 1 sec immediately after
powering on the instrument. To restore this function, power off once
and power on again.
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