Kyoritsu Electrical Instruments Works, Ltd. KEW SNAP 2033 User manual

INSTRUCTION MANUAL
DIGITAL AC/DC CLAMP METER
KEW SNAP SERIES
MODEL 2033

Contents
1. Safety Warnings ............................................................................... 1
2. Features ........................................................................................... 5
3. Specifications ................................................................................... 6
4. Instrument Layout ............................................................................. 8
5. Preparation for Measurement ........................................................... 9
5-1 Checking Battery Voltage ........................................................... 9
5-2 Checking Switch Setting ............................................................. 9
6. Measurement .................................................................................. 10
6-1 AC Current Measurement ......................................................... 10
6-2 DC Current Measurement ........................................................ 11
7. Other Functions .............................................................................. 12
7-1 Sleep Function ......................................................................... 12
7-2 Data Hold Function ................................................................... 12
8. Battery Replacement ...................................................................... 13

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1. Safety Warnings
○This instrument has been designed and tested according to IEC
Publication 61010; Safety Requirements for Electronic Measuring
Apparatus. This instruction manual contains warnings and safety
rules which must be observed by the user to ensure safe operation of
the instrument and retain it in safe condition. Therefore, read through
these operating instructions before using the instrument.
#WARNING
●Read through and understand instructions contained in this
manual before using the instrument.
●Save and keep the manual handy 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.
Failure to follow the 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 this cautionary note.
○The symbol #indicated on the instrument means that the user
must refer to related parts in the manual for safe operation of the
instrument. Be sure to carefully read the instructions following each
symbol in this 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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○The following symbols are used and marked on the instrument and in
the instruction manual. Please carefully check before starting to use
the instrument.
#User must refer to the explanation in the instruction manual.
Instrument with double or reinforced insulation.
Indicates that this instrument can clamp on bare conductors when
measuring a voltage corresponding to the applicable measurement
category, which is marked next to this symbol.
Indicates AC (Alternating Current).
Indicates DC (Direct Current).
#DANGER
●Never make measurement on a circuit above 300V AC or DC.
●Do not attempt to make measurement in the presence of
flammable gasses. Otherwise, the use of the instrument may
cause sparking, which can lead to an explosion.
●Never attempt to use the instrument if its surface or your hand is
wet.
●Do not exceed the maximum allowable input of any measurement
range.
●Never open the battery compartment cover when making
measurement.
●Transformer jaw tips are designed not to short the circuit under
test. If equipment under test has exposed conductive parts,
however, extra precaution should be taken to minimize the
possibility of shorting.
●Keep your fingers and hands behind the barrier during
measurement.

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#WARNIG
●Never attempt to make any measurement, if the instrument has any
structural abnormality such as cracked case and exposed metal
part.
●Ensure that the Clamp sensor is disconnected from the object
under test, and that the instrument is powered off when opening the
battery compartment cover for battery or fuse replacement.
●Do not install substitute parts or make any modification to the
instrument. Return the instrument to Kyoritsu or your distributor for
repair or re-calibration.
●Do not try to replace the battery if the surface of the instrument is
wet.
#CAUTION
●Do not expose the instrument to the direct sun, extreme
temperatures or dew fall.
●Be sure to set the function selector switch to the OFF" position
after use. When the instrument will not be in use for a long period of
time, place it in storage after removing the battery.
●Use a damp cloth and detergent for cleaning the instrument. Do not
use abrasives or solvents.
●This instrument isn't dust & water proofed. Keep away from dust and
water.

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○Measurement categories(Over-voltage categories)
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 enviroments can endure greater momentary energy than
one desined for CAT II.
０:Circuits which are not directly connected to the mains power
supply.
CAT II :Primary 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, and
to the power meter and primary overcurrent protection device
(distribution panel).
O: Device which is
not directly
connected to the
mains power supply

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2. Features
●Small Clamp Meter capable of AC/DC current measurement.
●Tear-drop-shaped jaws for ease of use in crowded cable areas and
other tight places
●Provides a wide measuring range from 0 up to 300A
●Designed to CAT Ⅲ300V and pollution degree 2 specified by the
international safety standard, IEC 61010-1.
●Data hold function to allow easy readings in dimly lit or hard-to-read
locations
●Sleep function to conserve battery life.
●Provides a dynamic range of 4,000 counts full scale
●Wide frequency range from 20Hz to 1kHz
●Transformer jaws fitted with Guard to further improve safety

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3. Specifications
●Measurement Ranges and Accuracy
DC current (Auto-ranging)
Range Measuring Range Accuracy
40A 0～±40.00A ±1.0％rdg±4dgt
300A ±20.0～±200.0A ±1.5％rdg±4dgt
±200.0～±300.0A ±3.0％rdg
AC current (Auto-ranging)
Range Measuring Range Accuracy
40A 0～40.00A ±1.0％rdg±4dgt (50/60Hz)
±2.5％rdg±4dgt (20Hz～1kHz)
300A
20.0～200.0A ±1.5％rdg±4dgt (50/60Hz)
±2.5％rdg±4dgt (20Hz～1kHz)
200.0～300.0A ±3.5％rdg (50/60Hz)
±4.0％rdg (20Hz～1kHz)
●Operating System : Dual Integration
●Display : Liquid crystal display with a maximum count
of 4,000
●Over-range Indication :OLis displayed
●Response Time : Approx. 2 sec.
●Sample Rate : Approx. 2.5 counts / sec
●Location for use : Indoor use. Altitude up to 2000m
●Temperature and Humidity for Guaranteed Accuracy
: 23℃±5℃, relative humidity up to 85％
without condensation
●
Operating Temperature : 0～40℃, relative humidity up to 85％
without condensation
●Storge Temperature and Humidity
: −20～60℃, relative humidity up to 85％
without condensation
●Power Souce :Two LR44 or SR44 (DC3V) batteries

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●Current Consumption : Approx. 9mA
●Sleep function : Automatically goes into the sleep mode
in about 5 minutes after the last switch
operation. (Current consumption: approx.
20 A)
●Conductor Size : Approx. 24mm diameter max.
●Dimentions : 147(L)×59(Ｗ)×25(Ｄ)ｍｍ
●Weight : Approx. 100g (batteries included)
●Safety Standards : IEC 61010-1 Pollution degree CAT III 300V
IEC 61010-2-32
●EMC Standards : IEC 61326 (EMC)
●RoHS : EN 50581
●Overload protection : AC / DC current ranges; 360A AC / DC for
10sec
●Withstand voltage : 3470V AC for 5 seconds between housing
case and jaws
●Insuration Resistance : 10 MΩor greater at 1000V between
housing case and jaws
●Accessories : Two LR44 batteries
Carrying case MODEL 9090
Instruction manual

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4. Instruction Layout
Barrier is a part providing protection against electrical shock and
ensuring the minimum required air and creepage distances.
●LCD INDICATOR
Transformer Jaws
Barrier Jaw Trigger Function Selector Switch
Safety Hand Strap
Display
Zero ADJ. Button
Data Hold Button
Data Hold Mode
Negative Potential
Current
AC Current
DC Current
Battery Voltage Alert

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5. Preparation for Measurement
5-1 Checking Battery voltage
Set Function Selector switch to any position other thanOFF.
When the display is clear without is showing, proceed to
measurement.
When the display blanks or is shown, replace the batteries
according to section 8: Battery Replacement.
NOTE
The Sleep function automatically turns the instrument off in about
five minutes after the last switch operation. Therefore, the display
may be blank with the Function Selector switch set to a position other
thanOFF.
To operate the instrument in this case, set the switch back to the
OFF position, then to the desired position, or press any button. If the
display still blanks, the batteries have exhausted. Then, replace the
batteries.
5-2 Checking Switch Setting
Make sure that the Function Selector switch is set to the correct
position and the Data Hold function is deactivated. Otherwise,
desired measurement cannot be made.

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6. Measurement
6-1 AC Current Measurement
#DANGER
●Do not make measurement on a circuit above 300V AC. This may
cause shock hazard.
●Do not make measurement with the battery compartment cover
removed from the instrument.
●Keep your fingers and hands behind the barrier during
measurement.
(1) Set the Function Selector switch to the "A" position. "AC" should
be shown on the lower left corner of the display.
(2) Press the jaw trigger to open the transformer jaws and clamp them
onto the conductor under test, then take the reading on the display.
Position the conductor at the center of the transformer jaws for
accurate measurement.
Note :
◇During current measurement, keep the transformer jaws fully closed.
Otherwise,accurate measurement cannot be made. The maximum
measurable conductor size is approx. 24mm in diameter.
◇Unlike in DC current measurement, zero adjustment is not necessary
in AC current measurement. There is no polarity in the reading either.
Correct Wrong

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6-2 DC Current Measurement
#DANGER
●Do not make measurement on a circuit above 300V AC. This may
cause shock hazard.
●Do not make measurement with the battery compartment cover
removed from the instrument.
●Keep your fingers and hands behind the barrier during
measurement.
(1) Set the Function Selector switch to the " A" position DC should be
shown on the upper left corner of the display.
(2) With the transformer jaws closed and without clamping them onto
the conductor, presses the Zero ADJ. Button for about one second
to zero adjust the display.
(3) Press the jaw trigger to open the transformer jaws and clamp them
onto the conductor under test and take the reading on the display.
Position the conductor at the center of the transformer jaws for
accurate measurement.
Note
◇During current measurement, keep the transformer jaws fully closed.
Otherwise, accurate measurement cannot be made. The maximum
measurable conductor
size is approx. 24mm in
diameter.
◇When the current flows
from the upside (the display
side)to the underside of the
instrument, the polarity of
the reading is positive and
vice versa. (See the figure
at the left.)
Correct
Wrong
“+” Current
“-” Current

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7. Other functions
7-1 Sleep Function
NOTE
The instrument consumes small amount of current even in the Sleep
(power-down) mode. Make sure to turn the Function Selector switch
to the "OFF" position, when the instrument is not in use.
This is a function to prevent the instrument from being left powered on
in order to conserve battery life. This function causes the instrument to
go into the Sleep (powered-down) mode about 5 minutes after the last
switch or button operation. To exit the Sleep mode, turn the Function
Selector switch back to "OFF", then to any other position, or press any
button.
7-2 Data Hold Function
This is a function used to freeze the measured value on the display.
Press the Data Hold button to freeze the reading. The reading will
be held regardless of the subsequent variation in current under test.
The " " symbols is shown on the upper right corner of the display
while the instrument is in the Data Hold mode.
To exit the Data Hold mode, press the Data Hold button again to
release it.
NOTE:
If the instrument in the Data Hold mode goes into "sleep," the Data
Hold function will remain effective when the instrument is powered
on again

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8. Battery Replacement
#WARNING
●To avoid electric shock hazard, never try to replace batteries
during measurement.
#CAUTION
●Do not mix new and old batteries.
●Make sure to install batteries in correct polarity as indicated in the
battery compartment.
If the instrument is powered on, but the display blanks or "BATT" is
shown on the display, replace the batteries
(1) Set the Function Selector switch to the "OFF" position.
(2) Press in the hole on the battery compartment cover with the tip of a
pointed object, then slide open the cover.
(3) Replace the batteries observing correct polarity. Make sure to use
two new LR44 or SR44 batteries.
(4) Slide the battery compartment cover back in place.
Battery Compartment Cover

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DIRECTIVE 2006/66/EC.
This directive is valid only in the EU. When you remove batteries
from this product and dispose them, discard them in accordance
with domestic law concerning disposal. Take a right action on
waste batteries, because the collection system in the EU on waste
batteries are regulated.
This instrument satisfies the marking requirement defined
in the WEEE Directive (2002/96/EC). This symbol indicates
separate collection for electrical and electronic equipment.

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Memo

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Memo

5-20 92-1401D
DISTRIBUTOR
Kyoritsu reserves the rights to change specifications or designs
described in this manual without notice and without obligations.