Kusam-meco KM-CAL-906 User manual

2
us or visit our web ( see the bottom page of the Manual ) .
3
3
3
3
Standard
Standard
Standard
Standard
Accessories
Accessories
Accessories
Accessories
Make sure that the package contains all the accessories listed below. And if you find they are damaged or any
of them is missing, please contact the vendor from which you purchased the product as soon as possible.
Refer to the replacing part list in 15.3 in the Manual if you want to order the replacing parts.

One set of Industrial testing Lead （CL727220 ）

A set of T esting Lead （Tp727110 ）

A set of Alligator clip （CC807130 ）

A quick reference guide

A User's Manual

One Fuse 50mA/250V
4
4
4
4
Safety
Safety
Safety
Safety
Information
Information
Information
Information
For the correct and safe use of the instrument, be sure to follow the cautionary notes stated in this manual
whenever handling the instrument. The Company shall not be held liable for any damage resulting from use of
the instrument in a manner other than prescribed in the cautionary notes.
A Warning
Warning
Warning
Warning
identifies conditions and actions that pose hazards to the user; a Caution
Caution
Caution
Caution
identifies conditions
and actions that may damage the meter or the equipment under test.
Refer to Table 1 for the explanation of the international electric symbols adopted by the calibrator or the user ’ s
manual.

3
Table 1 Explanations of International Electrical Symbols
Warning
Warning
Warning
Warning
To avoid possible electric shock or personal injury:
Do not apply more than the rated voltage, as marked on the calibrator , between terminals or between any
terminal and earth ground;
Before use, verify the meter ’ s operation by measuring a known voltage;
Follow all equipment safety procedures ;
Do not use the meter if it is damaged. Before using the meter, inspect the case. Look for cracks or missing
plastic .Pay particular attention to the insulation surrounding the connectors;
Select the proper function and range for the measurement;
Make sure the battery door is closed and latched before operating the meter;
Remove test leads from the meter before opening the battery door;
Inspect the test leads for damaged insulation or exposed metal. Check test lead continuity. Replace
damaged test leads before using the meter;
When using the probes, keep fingers behind the finger guards on the probes;
Connect the common test lead before connecting the live test lead. When disconnecting test leads,
disconnect the live test lead first;
Do not use the meter if it operates abnormally. Protection may be impaired. When in doubt, have the
meter inspect;
EARTH GROUND
WARNING
INFORMATION

4

Do not operate this instrument in areas where inflammable or explosive gases or vapor exists. It is
extremely hazardous to use the instrument under such environments ;
Do not operate the meter around explosive gas, vapor, or dust;

Use only type 4 AAA batteries, properly installed in the meter case, to power the meter;

Do disconnect the testing lead before shifting to different source or measurement functions;

When servicing the meter, use only specified replacement parts.

To avoid false reading, which could lead to possible electric shock or personal injury, replace the batteries
as soon as the low battery indicator ( ) appears .
Caution
Caution
Caution
Caution
To avoid possible damage to meter or to equipment under test:

Disconnect the power and discharge all high-voltage capacitors before testing resistance or continuity.

Use the proper jacks, function s, and ranges for the measurement or source operation.

5
5
5
5
5
Familiar
Familiar
Familiar
Familiar
With
With
With
With
the
the
the
the
Calibrator
Calibrator
Calibrator
Calibrator
Figure 1 Entire Graph

6
5.1
5.1
5.1
5.1
Measurement/
Measurement/
Measurement/
Measurement/
Source
Source
Source
Source
Terminals
Terminals
Terminals
Terminals
Figure 2 shows the measurement /source terminals of the calibrator. Table 2 explains their use.

7
Figure 2 Measurement/ Source Terminals Figure 3 keys
Table 2 Measurement / Source Terminals
Terminal
Terminal
Terminal
Terminal
Function
Function
Function
Function
①
4W terminals : measurement terminal of the 4W OHM 、
RTD
②
Measurement Signals （+）： OHM 、RTD
③
Measurement Signals （+）： DC V 、TC
3W Terminal ：measurement terminal of the 3W OHM 、
RTD

8
5.2
5.2
5.2
5.2
Keys
Keys
Keys
Keys
Figure 3 shows keys of the calibrator. Table 3 explains their use.
Table 3 Functions of the keys
④
All the common (return ) （-）terminals of measurement
function
⑤
Source Signals ：（ +）DC V 、TC
⑥
Source Signals ：（ -）OHM 、RTD
⑦
All the common (return ) （- ） terminals of source functio n
⑧
Source Signal ：（ +）OHM 、RTD
No.
No.
No.
No.
Name
Name
Name
Name
Function
Function
Function
Function
1~5
Source value set key
Increment of source set point
6~10
Source value set key
Decrement of source set point
11
MEASURE
MEASURE
MEASURE
MEASURE
key
Turn on or off measurement function
12
SOURCE
SOURCE
SOURCE
SOURCE
key
Turn on or off source function
13
Power key
Turn on or off the power
14
Backlight key
Turn on or off the backlight
15
mV
mV
mV
mV
Key
Select measurement/source DC-voltage function

9
16
RTD
RTD
RTD
RTD
Key
Select measurement/source RTD function
17
OHM
OHM
OHM
OHM
Key
Select measurement/source OHM function
18
Tc
Tc
Tc
Tc
Key
Select measurement/source Tc function
19
Key
Select measurement continuity function
20
RANGE
RANGE
RANGE
RANGE
Key
Select measurement/source range
21
RJ-ON
RJ-ON
RJ-ON
RJ-ON
Key
In TC measurement /source function, turn on or off the RJ
compensation function.
22
T.DISP
T.DISP
T.DISP
T.DISP
Key
In TC/RTD measurement /source function , pressing the
key, convert the assistance display between room
temperature or mV/ Ωvalue;
On other measurement /source function, pressing the key,
turn on or off room temperature display in assistance
display.
23
HOLD
HOLD
HOLD
HOLD
Key
Measured value holding
24
4/3/2W
4/3/2W
4/3/2W
4/3/2W
Key
In ohm/RTD measurement function, select 2W,3W or 4W
method .
25
AVG
AVG
AVG
AVG
Key
M easuring average value
26
ZERO
ZERO
ZERO
ZERO
Key
Set the source value to default value

10
5.3
5.3
5.3
5.3
Display
Display
Display
Display
Screen
Screen
Screen
Screen
Figure 4 shows a typical display screen.
a：Measurement
b：Source
c：Measurement/Source resistance
d：Battery level indicator
e：Measurement/ Source function on
f：Measurement/ Source DC-voltage functio
n
g：Measurement/ Source Tc function
h：Measurement/ Source RTD function
i：Beeper of measurement continuity
j：Display – hold for measured value
k：Average value for measurement Figure 4 typical LCD display
l：4/3/2W for Measurement ohm/RTD function
m：Measurement/Source value
n：Unit of measured/sourced value
o：Reference Junction Compensation On
p：Types of TC measurement / source
q：Types of RTD measurement / source
r：room temperature/ Tc(mV) or RTD( Ω) subsection value

11
s：Unit of room temperature/ Tc(mV) or RTD( Ω) Unit of subsection value
6
6
6
6
Before
Before
Before
Before
starting
starting
starting
starting
source/measurement
source/measurement
source/measurement
source/measurement
Operating
Operating
Operating
Operating
Precautions
Precautions
Precautions
Precautions
Precautions
Precautions
Precautions
Precautions
for
for
for
for
Safe
Safe
Safe
Safe
Use
Use
Use
Use
of
of
of
of
the
the
the
the
Instrument
Instrument
Instrument
Instrument

When using the instrument for the first time, be sure to read the instructions given in S ection Four
“ Precautions for Safe Use of the Instrument. ”

Do not open the instrument ’ s case.
Contact the vendor from which you purchased the instrument, for a service of inspecting or adjusting the
internal assembly.

In case of failure
Should the instrument begin to emit smoke, give off an unusual odor, or show any other anomaly,
immediately turn off the POWER key. If you are using an Charger, disconnect the plug from the wall
outlet. Also cut off power to the object under test that is connected to the input terminals. Then, contact
the vendor from which you purchased the instrument.

Charger
Use an Charger dedicated to the instrument. Avoid placing any load on the Charger, or prevent any heat-
emitting object from coming into contact with the adapter.
General
General
General
General
Handling
Handling
Handling
Handling
Precautions
Precautions
Precautions
Precautions

Before carrying around the instrument turn off power to the object under test, and then the POWER key
of the instrument. If you are using an Charger, disconnect the power cord from the wall outlet. Finally,

12
detach all lead cables from the instrument. Use a dedicated carry case when transporting the instrument.

Do not bring any electrified object close to the input terminals, since the internal circuit may be destroyed.

Do not apply any volatile chemical to the instrument ’ s case or operation panel. Do not leave the
instrument in contact with any product made of rubber or vinyl for a prolonged period. Be careful not to let
a soldering iron or any other heat-emitting object come into contact with the operation panel, as the panel
is made of thermoplastic resin.

Before cleaning the instrument ’ s case or operation panel disconnect the power cord plug from the wall
outlet if you are using an Charger. Use a soft, clean cloth soaked in water and tightly squeezed to gently
wipe the outer surfaces of the instrument. Ingress of water into the instrument can result in malfunction.

If you are using an Charger with the instrument and will not use the instrument for a prolonged period,
disconnect the power cord plug from the wall outlet.

For handling precautions regarding the batteries, see “ Installing or Replacing the Batteries ” .

Never use the instrument with the cover of the battery holder opened.
Environmental
Environmental
Environmental
Environmental
Requirements
Requirements
Requirements
Requirements
Use the instrument in locations that meet the following environmental requirements:

Ambient temperature and humidity
Ambient temperature range: 0 to 50 ℃
Ambient humidity range: 2 0 to 80% RH. Use the instrument under non-condensing condition.

Flat and level locations
Do
Do
Do
Do
not
not
not
not
use
use
use
use
the
the
the
the
instrument
instrument
instrument
instrument
in
in
in
in
locations
locations
locations
locations
that
that
that
that
are
are
are
are

Exposed to direct sunlight or close to any heat source.

13

Exposed to frequent mechanical vibration.

Close to any noise source, such as high-voltage equipment or motive power sources.

Close to any source of intensive electric or electromagnetic fields.

Exposed to large amounts of greasy fumes, hot steam, dust or corrosive gases.

Exposed to unstable or a risk of explosion due to the presence of flammable gases.
Note:
Note:
Note:
Note:

Use the instrument under the following environmental conditions if precise source or measurement is
your requirement:
Ambient temperature range: 23 ±5°C;
Ambient humidity range: 20 to 80% RH(non-condensing)

When using the instrument within a temperature range of 0 to 18 °C or 28 to 50 °C, add a value based
on the temperature coefficient shown in Chapter 1 8 “ Specifications ” to the given accuracy rating.

When using the instrument at an ambient humidity of 30% or lower, prevent electrostatic charges from
being produced, by using an antistatic mat or any other alternative means.




Condensation may occur if you relocate the instrument from places with low temperature and humidity to
places with high temperature and humidity, or if the instrument experiences any sudden temperature
change. In that case, leave the instrument under the given ambient temperature for at least one hour to
ensure that the instrument is free from condensation, before using the instrument.
Installing
Installing
Installing
Installing
or
or
or
or
Replacing
Replacing
Replacing
Replacing
the
the
the
the
Batteries
Batteries
Batteries
Batteries
W
W
W
W
arning
arning
arning
arning
To avoid electrical shock, always remove the source or measurement lead cables from the object under test,

14
as well as from the instrument itself.
C
C
C
C
aution
aution
aution
aution

To avoid the risk of fluid leakage or battery explosion, install batteries with their positive and negative
electrodes correctly positioned.

Do not short-circuit the batteries.

Do not disassemble or heat the batteries or throw them into fire.

When replacing batteries, replace all of the four batteries at the same time with new ones from the same
manufacturer.

If the instrument will not be used for a prolonged period, remove the batteries from the instrument.
Step
Step
Step
Step
1:
1:
1:
1:
Remove the lead cables and charger and turn off the calibrator before you begin installing batteries.
Step
Step
Step
Step
2:
2:
2:
2:
Remove the battery holder cover by sliding it in one-quarter counterclock wise direction and turn off
the calibrator.
Step
Step
Step
Step
3:
3:
3:
3:
Install four alkaline batteries of same type in the battery holder with their positive and negative
electrodes positioned correctly as indicated on the holder.
Step
Step
Step
Step
4:
4:
4:
4:
After replacement, reattach the battery holder cover.
Indication
Indication
Indication
Indication
of
of
of
of
Battery
Battery
Battery
Battery
Level
Level
Level
Level
The battery replacement indicator shows the battery level in five steps according to the measured voltage of
the batteries.
Full battery:

15
The battery level is below 50% full:
The battery level is below 25 % full:
Low battery:
The dictation flashes in sequence when getting charged.
Note that the battery replacement indicator is driven by directly measuring the battery voltage when the
calibrator is in actual operation. Consequently, the indicator may read differently depending on the battery
load condition (e.g., the load condition of the source output or on/ off state of the measurement function) if the
batteries are too low.
Connecting
Connecting
Connecting
Connecting
the
the
the
the
Charger
Charger
Charger
Charger
W
W
W
W
arning
arning
arning
arning

Make sure the voltage of the AC power source matches the rated supply voltage of the Charger, before
connecting the Charger to the AC power source.

Do not use any Charger other than the dedicated Charger from the Company .

Do not charge non Ni-Cd, Ni-MH batteries or wasted batteries.
Step
Step
Step
Step
1:
1:
1:
1:
Make sure the calibrator is turned off.
Step
Step
Step
Step
2:
2:
2:
2:
Insert the plug of the optional Charger into the Charger connection jack.
N
N
N
N
ote
ote
ote
ote

Turn off the calibrator before connecting or disconnecting the Charger from AC power, plugging in/out the

16
Charger connection jack.

Plug out the Charger from the Charger connection jack of the calibrator when discharging.

Do not charge the calibrator without any battery in.
Turning
Turning
Turning
Turning
On
On
On
On
the
the
the
the
Power
Power
Power
Power
Pressing the Power key once when the power is off turns on the calibrator .
Pressing the Power key for 2 seconds turns off the calibrator.
Automatic
Automatic
Automatic
Automatic
Power-off
Power-off
Power-off
Power-off
When the calibrator is running on batteries and no key is operated for approximately ten minutes, the
calibrator turns off automatically . The automatic power-off time could be reset in the factory default parts, see
Chapter 10 “ Factory Default ” .
Turning
Turning
Turning
Turning
On/Off
On/Off
On/Off
On/Off
the
the
the
the
Backlight
Backlight
Backlight
Backlight
Pressing the key turns on the backlight, while pressing the key once again turns it off. This feature makes it
easier for you to view the LCD when operating the calibrator in dark places or when carrying out source or
measurement. Battery life shortens when the calibrator is operated on batteries.
Note
Note
Note
Note
T he backlight automatically turns off after 10 seconds. Press the key once more to relight it.
The time could be reset in the factory default parts, see Chapter 10 “ Factory Default ” .
7
7
7
7
Source
Source
Source
Source
From the calibrator, you can source a DC voltage, resistance, thermocouple, RTD.
W
W
W
W
arning
arning
arning
arning

17
To avoid electrical shock, do not apply more than the rated voltage, as marked on the calibrator , between
terminals or between any terminal and earth ground . Always use the calibrator in locations with a voltage to
ground below 30 V pk .
C
C
C
C
aution
aution
aution
aution

The instrument has been calibrated without taking into account a voltage drop due to the resistance
component of the lead cables for source. Care must be taken therefore when drawing a load current
since the voltage drop due to the resistance component (approximately 0.1 Ω on a round-trip basis) of
the lead cables serves as an error.
7
7
7
7
.1
.1
.1
.1
Connecting
Connecting
Connecting
Connecting
Cables
Cables
Cables
Cables
to
to
to
to
Terminals
Terminals
Terminals
Terminals
For
For
For
For
DC
DC
DC
DC
voltage,
voltage,
voltage,
voltage,
thermocouple
thermocouple
thermocouple
thermocouple
(
(
(
(
Figure
Figure
Figure
Figure
5)
5)
5)
5)
Figure 5 Sourcing DC voltage, TC
Step
Step
Step
Step
1:
1:
1:
1:
Connect the black lead cable for source to the COM
output terminal and the red lead cable to the “ mVTc ” output
terminal.
Step
Step
Step
Step
2:
2:
2:
2:
Connect the other ends of t he cables to the input of
equipment under test while making sure the polarities are
correct.
For
For
For
For
resistance
resistance
resistance
resistance
and
and
and
and
RTD
RTD
RTD
RTD
signal
signal
signal
signal
(Figure
(Figure
(Figure
(Figure
6)
6)
6)
6)
Step
Step
Step
Step
1:
1:
1:
1:
Connect black lead cable s for source to the
black terminal of Ω 、 RTD and the red lead cable to
the red terminal of Ω 、 RTD .

18
S
S
S
S
tep
tep
tep
tep
2:
2:
2:
2:
Connect the other ends of the cables to the input of equipment under test while making sure the
polarities are correct.
Figure 6 Sourcing Resistances and RTD
7
7
7
7
.2
.2
.2
.2
Sourcing
Sourcing
Sourcing
Sourcing
DC
DC
DC
DC
Voltage
Voltage
Voltage
Voltage
Step
Step
Step
Step
1:
1:
1:
1:
Using the 〔mV
mV
mV
mV
〕key to select DC voltage source function , select the desired range from 100mV ,
1 000m V by pressing the 〔RANG
RANG
RANG
RANG
〕key. The default value and unit of the selected source function and range
shall be displayed in the main districts part of the LCD.
Step
Step
Step
Step
2
2
2
2
:
:
:
:
Set the output value digit by digit using 〔〕/〔〕keys.
Each pair of 〔〕 / 〔〕keys corresponds to each digit of the LCD reading. Each press of the 〔〕 / 〔 〕
key increases or decreases the digit. Increasing the digit from 9 or decreasing it from 0 causes the digit to
overflow or underflow, allowing you to set the output value without interruption. Holding down the 〔 〕 / 〔 〕
key continuously changes the digit in question. And the value won ’ t change if it is increased or decreased to
the Maxim or Minimum value. Pressing the 〔ZERO
ZERO
ZERO
ZERO
〕 key initializes the output set point to the default value (0) .
Step
Step
Step
Step
3
3
3
3
:
:
:
:
The calibrator sources the DC-voltage signal between the output terminals.
7
7
7
7
.
.
.
.
3
3
3
3
Sourcing
Sourcing
Sourcing
Sourcing
Resistance
Resistance
Resistance
Resistance

Firstly, t he calibrator sources a resistance signal by receiving the resistance-measuring current I supplied
from the device being calibrated (such as a resistance meter) and then delivering the voltage V
proportional to the preset resistance R between the output terminals, and thus producing the equivalent
resistance R =V/I. Consequently, the calibrator sources the signal correctly only for such devices that

19
employ this method of measurement.

The allowable range of the resistance measuring current I that the calibrator receives from a resistance
measuring device under calibration is rated as 0.1 mA to 3 mA. To ensure accuracy, the resistance
measuring current I from the device under calibration shall be strictly confined within the range . For
further details, see Chapter 17 , “ Specification ” .

Any resistance signal being sourced does not include the resistance component of the lead cables for
source. The whole resistance, when measured at the ends of the lead cables for source, is given by
adding the resistance of the lead cables (approximately 0.1 Ωon a round-trip basis) to the sourced
resistance signal. For source of precise resistance signals, use three-wire or four-wire connection.

If capacitance between the terminals of a device under calibration is greater than 0.1 ų F, the calibrator
may fail to source correct resistance signals.
Step
Step
Step
Step
1:
1:
1:
1:
Using the 〔OHM
OHM
OHM
OHM
〕 key to select Ohm function. Using the 〔RANGE
RANGE
RANGE
RANGE
〕 key, select the desired range. The
selected function and the default range source value and unit shall be shown in the main districts part of the
LCD.
Step
Step
Step
Step
2
2
2
2
:
:
:
:
Set the output value digit by digit using each pair of 〔〕/〔〕keys.
Each pair of 〔〕/〔〕keys corresponds to each digit of the LCD reading. Each press of the 〔〕/〔〕
key increases or decreases the digit. Increasing the digit from 9 or decreasing it from 0 causes the digit to
overflow or underflow, allowing you to set the output value without interruption. Holding down the 〔〕/〔 〕
key continuously changes the digit in question. And the value won ’ t change if it is increased or decreased to
the Maxim or Minimum value. Pressing the 〔ZERO
ZERO
ZERO
ZERO
〕key initializes the output set point to the default value(0).
Step
Step
Step
Step
3
3
3
3
:
:
:
:
The calibrator sources the preset resistance value between the output terminals.