INSTRUCTION MANUALCARD TYPE AUTO RANGE DIGITAL MULTIMETER

KEW 1018
1. Safety Warnings
This instrument has been designed, manufactured andtested according to the following standards.
IEC 61010-1 Measurement CATⅢ 300V Pollution degree 2
IEC 61010-031
IEC 61326
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 containedin this manual before starting using the instrument.
● Save and keep the manual handy to enable quickreference whenever necessary.
● The instrument is to be used only in its intendedapplications.
● 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 theuser must refer to related parts in the manual for safe
operation of the instrument.
Be sure to carefully read the instructions following # eachsymbol in the manual.
# DANGER is reserved for conditions and actions thatare likely to cause serious or fatal injury.
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.
# WARNING

6. Measurements
6-1  Voltage Measurement (DCV, ACV)# DANGER● To avoid the danger of getting electrical shock,never make measurement on a circuit over 600VAC/DC. (electrical potential to ground 300V AC/DC)● Do not operate Function Selector Switch during
measurement.
● Do not make measurement when opening the
instrument case.
● Keep your fingers and hands behind the protective
fingerguard during measurement.
6-1-1 DC Voltage Measurement (DCV)(1) Set the Function Selector Switch to " " position.
(Then, "AUTO"," "and"mV" symbols are indicated on
the display.)(2) Connect the black test lead to the negative side of
the circuit under the test and the red test lead to thepositive side of the circuit, then the measured value
is indicated on the display. If you connect the test
leads the other way, "-" symbol is indicated on thedisplay.
6-1-2 AC Voltage Measurement (ACV)(1) Set the Function Selector Switch to " " position.
(Then, "AUTO", "", and "V" symbols are indicatedon the display.)(2) Connect the test leads to the circuit under test.
Measured value is indicated on the display.
Note) Even if short-circuit the input line at the range of
AC4V, 2〜5dgt may remain indicated.
6-2  Resistance Measurement# DANGER● To avoid the danger of getting electrical shock, nevermake measurement of the circuit in which electric
potential exists.
● Do not make measurement when opening theinstrument case.
● Keep your fingers and hands behind the protective
fingerguard during measurement.

(1) Set the Function Selector Switch to "Ω" position.
(Then, "AUTO" and "MΩ" symbols are indicated on
the display.) Make sure that the "OL" symbol isindicated on the display at this bout, then short thetest lead tips and check "0" is indicated on thedisplay.
(2) Connect the test leads to both ends of the resistanceunder test.
Measured value is indicated on the display.
Note) Even if short the test lead tips, indicated value may
not be "0". But this is because of the resistance oftest leads and not a failure.
6-3   Continuity Check/ Diode Check# DANGER● To avoid the danger of getting electrical shock, nevermake measurement of the circuit in which electric
potential exists.
● Do not make measurement when opening theinstrument case.

6-3-1 Continuity Check(1) Set the Function Selector Switch to "/ " position.
(Then, " " and Ω symbols are indicated on thedisplay.)(2) Make sure that the "OL" symbol is indicated on thedisplay at this bout, then short the test lead tips andcheck "0" is indicated on the display and check if thebuzzer beeps.

# DANGER● Never make measurement on the circuit in which electricalpotential to ground over 300V AC/DC exists.
● Do not attempt to make measurement in the presence offlammable gasses. Otherwise, the use of the instrument
may cause sparking, which can lead to an explosion.
● Do not exceed the maximum allowable input of anymeasurement range.
● Never attempt to use the instrument if its surface or
your hand is wet.
● Do not open the instrument case when making measurement.
● Keep your fingers and hands behind the protective
fingerguard during measurement.
● Verify proper operation on a known source before use
or taking action as a result indication of the instrument.
# WARNING● Never attempt to make any measurement if any
abnormal conditions are noted, such as broken case,cracked test leads and exposed metal parts.
● Do not turn the function selector switch with test
leads connected to the instrument.
● Do not install substitute parts or make any
modification to the instrument.
● Do not try to replace the batteries if the surface ofthe instrument is wet.
● Make sure to disconnect test leads from the device under
test when opening the case for battery replacement.
● Use of our Protective Cap offers different lengths of theexposed metal part suitable for the test environments.
Please attach the Cap onto the metal part under
CAT III or higher test environments.
● Stop using the test lead if the outer jacket is damaged
and the inner metal or color jacket is exposed.
# CAUTION● Always make sure to check Function switch is setting
to the appropriate range before starting measurement.
● Do not expose the instrument to the direct sun, hightemperature and humidity or dewfall.
● When the instrument will note be in use for a long
period, place it in storage after removing the batteries.
● Use a cloth dipped in water or neutral detergent forcleaning the instrument. Do not use abrasives or solvents.
● The Cap should be firmly attached to the Probes.
● This instrument isn't dust & water proofed. Keepaway from dust and water.

Please refer to following explanation of the symbols
marked on the instrument or in the manual.
● Symbols
 ：Ground ：AC
：DC：AC and DC
Ω ：Resistance ：Diode：Buzzer：Capacitor
Hz ：Frequency
 ：Double or reinforced insulation：This instrument satisfies the marking requirement
defined in the WEEE Directive (2002/96/EC).
This symbol indicates separate collection forelectrical and electronic equipment.

● Measurement
CATⅡ：Primary electrical circuit of equipmentwith power cord for connection to outlet.

CATⅢ：P r i m a r y e l e c t r i c a l c i r c u i t o f t h eequipment, which is supplied power from a
distribution board, and cable run from a
distribution board to an outlet.

2. Features
This is a Digital Multi Meter providing most portability
by means of stowing the instrument body together withprobe in the notebook-size cover.
● Designed to international safety standards.
IEC 61010-1 Measurement CAT Ⅲ 300V
Pollution degree 2, IEC 61010-031 (probe assemblies)
IEC61326 (EMC) , EN50581 (RoHS)● REL function to check the difference of measured values● Auto power off function to save battery consumption● Data hold function● Diode and Continuity check function● Auto-ranging function● Frequency measurement function● DUTY measurement function(Express Pulse width / Pulse period as a percentage)(3) Connect the test leads to both ends of the resistanceunder test.
Measured value is indicated on the display. The
buzzer beeps below about 120Ω.
Note) Even if short the test lead tips, indicated value may
not be "0". But this is because of the resistance oftest leads and not a failure.
6-3-2 Diode Check(1) Set the Function Selector Switch to "/ " position.
(Then, " " and "Ω" symbols are indicated on thedisplay.)(2) Press the SELECT Key twice and set the instrument
to Diode Check mode. (Then, "" and "V" symbols
are indicated on the display.) Make sure that the"OL" symbol is indicated on the display at this bout,then short the test lead tips and check "0" isindicated on the display.
(3) Connect the black test lead to the cathode side of
the Diode and the red test lead to the anode side ofthe Diode.
Forward voltage of Diode is indicated on the display.
(4) Connect the black test lead to the anode side of theDiode and the red test lead to the cathode side of
the Diode.Normally, "OL" symbol is indicated on thedisplay.
Conclusion : Diode is OK if the instrument complies withabove items(3) and (4).
Note) Open-circuit voltage between measuring terminals isapprox.1.5V.(measuring current approx. 0.4mA)
6-4  Capacitance Measurement# DANGER● To avoid the danger of getting electrical shock, nevermake measurement of the circuit in which electric
potential exists.
● Do not make measurement when opening theinstrument case.
● Make sure to discharge the capacitor before making
measurement.
● Keep your fingers and hands behind the protective
fingerguard during measurement.

(1) Set the Function Selector Switch to " " position.
(Then, "AUTO" and "nF" symbols are indicated on
the display.)(2) Press the SELECT key and "0" shall be indicated.
(Then, "△" symbol is indicated on the display.)(3) Connect the test leads to both ends of the resistanceunder test.
Measured value is indicated on the display.
Measuring unit "nF" / "uF" is automatically chosen
and indicated due to the measured value.
Note) It may take some time according to the measuring
capacitance.
Measuring capacitance < 4uF Measuring time isabout 2seconds
Measuring capacitance < 40uF Measuring time isabout 7seconds
Measuring capacitance < 100uF Measuring time isabout 15seconds

3. Specification● Measuring ranges and accuracy(23±5℃, under the 45%〜75%RH)
DCV Function(5 Autoranging) :Input impedance approx. 10MΩRange
400mV
4V
40V
400V
600V

Measuring range

Accuracy±0.8%rdg±5dgt

0〜600V

±1.0%rdg±5dgt

ACV Function(4 Autoranging): Input impedance approx. 10MΩ
Range
4V
40V
400V
600V

Measuring range
0〜600V

Accuracy±1.3%rdg±5dgt (50 / 60Hz)±1.7%rdg±5dgt (〜400Hz)±1.6%rdg±5dgt (50 / 60Hz)±2.0%rdg±5dgt (〜400Hz)

Resistance Function(6 Autoranging)
Range
400Ω
4kΩ
40kΩ
400kΩ
4MΩ
40MΩ

Measuring range

Accuracy±1.0%rdg±5dgt

0〜40MΩ

±2.5%rdg±5dgt

Diode check/Continuity check Function
Function
Diode checkContinuity check

Measuring range
Test current approx. 0.4mA
Buzzer beeps below about 120Ω

Capacity Function (6 Autoranging)
Range
4nF
40nF
400nF
4uF
40uF
200uF

Measuring range〜200uF● Temperature & Humidity range(guaranteed accuracy):
23℃±5℃ Relative humidity: less than 75%● Operating Temperature & Humidity range:
0℃〜+40℃ Relative humidity: less than 80%● Storage Temperature & Humidity range:-20℃〜+60℃ Relative humidity: less than 70%● Insulation Resistance:
It should be more than 10MΩ/DC1000V between
electrical circuit and enclosures.
● Withstand Voltage :It should be more than AC3470V/ for five seconds.
between electrical circuit and enclosures.
● Overload Protection :Voltage function :720V(RMS.) 10seconds
Resistance function : 250V(RMS.) 10seconds
Diode / Continuity : 250V(RMS.) 10seconds
Capacity function : 250V(RMS.) 10seconds
Frequency function : 250V(RMS.) 10seconds● Dimensions : approx. 107(L) x 54(W) x 10(D) mm● Weight : approx. 70g(including batteries)● Power source : Two LR44(SR44)1.5V or equivalent● Accessories : Two LR44 (SR44) batteries
Portable holder
Instruction manual# CAUTION
The voltage shown above is the overload protection(overvoltage protection) for the instrument.
Make sure not to exceed the value of voltage shown
above.

4. Instrument Layout

Accuracy±5.5%rdg±10dgt±3.5%rdg±10dgt⑦±3.5%rdg±5dgt⑥±4.5%rdg±5dgt

Frequency (4 Autoranging)/ DUTY Function
Range
10Hz
100Hz
1000Hz10kHz
DUTY

Measuring range

Accuracy〜10kHzInput sensitivity:
more than 1.5V(RMS)±0.1%rdg±5dgt

0.1〜99.9%(Pulse width / Pulse period)±2.5%rdg±5dgt

Note:*At Voltage function, the Auto-ranging function is released
by pressing the SELECT key. To measure a voltage again,
turn the Function switch to the "OFF" position once. Then
set it to the Voltage function again.
● Standards :IEC61010-1,-2-033
Measurement CAT III 300V, CAT II
600V pollution degree 2
IEC61010-031
capped condition for CAT III 300V
uncapped condition for CAT II 300V
IEC61326 (EMC) , EN50581 (RoHS)● Method of operation : △∑method● Indication:
LCD maximum value 3999 (ACV, DCV, Ω, F)
units, symbols● Over range display :"OL" symbol is displayed on the LCD.
In case that the value is beyond effective measuring range
at the position of Ω function range and manual range.
● Auto-ranging :Range shifts to upper range when indicated value ismore than 3999. Range shifts to lower range whenindicated value is less than 360.
● Sampling rate : approx. 400ms● Operating Environmental conditions−indoor use−altitude up to 2000m

6-5  Frequency Measurement# DANGER● To avoid the danger of getting electrical shocks, nevermake measurement on a circuit over 300V AC/DC.
(electrical potential to ground 300V AC/DC)● Do not operate Function Selector Switch duringmeasurement.
● Do not make measurement when opening the
instrument case.
● Keep your fingers and hands behind the protective
fingerguard during measurement.

Frequency can be measured at ACV functions bypressing "Hz/DUTY" Switch. Concerning with thedirection for use of "Hz/ DUTY" Switch, pleasereference to the item7-1 Hz/DUTY in this document.
Note) The minimum input can be measured is approx. 1.5V.
To measure a frequency, measure the voltage on theelectrical circuit in advance. Then press the "Hz/DUTY" Key to enter into frequency measurement.
Readings of frequency may fluctuate or be
influenced under noisy environment.
7. How to use Function Switches
7-1  SELECT, Hz/DUTY Key
At each function, the actions of SELECT, Hz/DUTY key
are different so please refer to following items and makeactive use of them.
● ACV function(Above two keys act as Hz/DUTY switch key.)
Capable of selecting the Voltage, Frequency or
DUTY measurement mode.
At the initial condition, Voltage measurement has
been selected for the ACV function.
By pressing "Hz/DUTY" key, measuring modechanges.
"Voltage" → "Frequency" → "DUTY"● *At Voltage function, the Auto-ranging function isreleased by pressing the SELECT key. To measure a
voltage again, turn the Function switch to the "OFF"position once. Then set it to the Voltage function again.
● DCV, Ω and Capacitance measurement(Above two keys act as REL△ key.)
Indicate the difference between measured values.
When any function ("DCV", "Ω" and "Capacitance")
selected, the measured value can be stored bypressing SELECT key and after that, the difference
between stored value and measuring value isindicated on the display(△mark is keep lighting on the display while a valueis stored)
The stored value can be released by pressing"SELECT" key again.
"Release"→"Memory"● Continuity check /Diode check function(Change between Continuity check and Diode check)At the initial condition, "Continuity check" mode has
been selected for the Continuity check / Diode checkfunction.
By pressing "SELECT" key, measuring modechanges.
"Continuity check"→"Diode check"
The relative measurement is allowed in the following
range.
*Measuring range = Full scale value at a range −initial value
7-2  DATA HOLD Key
The measured value can be hold at all functions.
By pressing "DATA HOLD" key, "DH" symbol indicatedon the display and the indicated value can be held.
By pressing "DATA HOLD" key again, "DH" symbol
disappears from the display and held data is released.

⑤ Test Leads① Function Selector Switch② Display⑥ Protective fingerguard③ SELECT Key⑦ Cap④ DATA HOLD Key
Protective fingerguard：
It is a part providing protection against electrical shock andensuring the minimum required air and creepage distances.
Cap:Test leads can be used under the CAT II and CAT III
and CAT IV environments by attaching a protective cap
as illustrated below. Use of our protective cap offers
different lengths suitable for the test environments.
When the instrument and the test lead are combined
and used together, whichever lower category either ofthem belongs to will be applied.
5. Preparation
5-1 Checking Battery Voltage
Set the Function Selector Switch to other positions
except the OFF position.
Battery Voltage is enough if indication is clear andBT symbol is not indicated in this bout.
If BT symbol is indicated or no indication on the display,follow to the Battery Replacement procedures shown in
item9 in this document and replace with new batteries.

8. Auto Power Off
Auto power off function operates when about 15minutes
passed after power on this instrument. When Autopower off function operates and the instrument powered
off, the power-off statue returns to normal by pressing
any key.
9. Battery Replacement# DANGER● Never open the instrument case when making
measurement.
● To avoid getting electrical shock, be sure to remove
test leads from the instrument when opening theinstrument case in order to replace batteries.

(1) Remove the Portable holder from the instrument.
(2) Loosen one screw on the bottom of the instrument
and open the battery cover, then replace batteries.
Battery : Two LR44(SR44)1.5V or equivalent

10. Maintenance
Use a cloth dipped in water or neutral detergent forcleaning the instrument. Do not use abrasives orsolvents.
DISTRIBUTOR

Kyoritsu reserves the rights to change specifications
or Designs described in this manual without notice
and without obligations.

92-1649G