ELMTEC EC 10 Technical manual

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Operation Instruction
RTD & TC Calibrator
EC 10
ELMTEC

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Temperature Calibrator
1 Introduction
This temperature calibrator (the calibrator in the following) is a handheld, battery-operated instrument that
measures and sources electrical and physical parameters.
Features:
Measure: DC-voltage, ohm, Tc, RTD, continuity;
Source: DC-voltage, ohm, Tc, RTD;
Others features:
2-wire,3-wire,4-wire connection method for ohm and RTD measurement.
Big LCD can display the TC/RTD measurement value and voltage/resistance corresponding
simultaneously.
TC measurement/source terminals and built-in lead connector of same temperature (RJ compensation
with auto-reference joint point)
Room temperature monitoring under any operation
Measurement wave-filter function
Measurement manual-holding function
2 Contact Us
To purchase parts, obtain operation help or address of the vendor or service center nearest to you, please call
us or visit our web (see the bottom page of the Manual).
3 Standard 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 the Manual if you want to order the replacing parts.
One set of Industrial testing Lead （CL727220）
A set of Testing Lead （Tp727110）
A set of Alligator clip （CC807130）
A quick reference guide
A User's Manual
One Fuse 50mA/250V

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4 Safety 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 identifies conditions and actions that pose hazards to the user; a 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.
Table 1 Explanations of International Electrical Symbols
EARTH GROUND
WARNING
INFORMATION
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;
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
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, functions, and ranges for the measurement or source operation.

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Figure 1 Entire Graph
5 Familiar With the Calibrator
5.1 Measurement/ Source Terminals
Figure 2 shows the measurement /source terminals of the calibrator. Table 2 explains their use.
Figure 2 Measurement/ Source Terminals Figure 3 keys

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Table 2 Measurement/ Source Terminals
Terminal Function
①
4W terminals : measurement terminal of the 4W
OHM、RTD
②Measurement Signals（+）：OHM、RTD
③
Measurement Signals（+）：DCV、TC
3W Terminal：measurement terminal of the 3W
OHM、RTD
④All the common (return ) （-）terminals of
measurement function
⑤Source Signals：（+）DCV、TC
⑥Source Signals：（-）OHM、RTD
⑦All the common (return ) （-）terminals of source
function
⑧Source Signal：（+）OHM、RTD

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5.2 Keys
Figure 3 shows keys of the calibrator. Table 3 explains their use.
Table 3 Functions of the keys
No. Name 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 key Turn on or off measurement function
12 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 Key Select measurement/source DC-voltage function
16 RTD Key Select measurement/source RTD function
17 OHM Key Select measurement/source OHM function
18 Tc Key Select measurement/source Tc function
19 Key Select measurement continuity function
20 RANGE Key Select measurement/source range
21 RJ-ON Key In TC measurement /source function, turn on or off the RJ
compensation function.
22 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 Key Measured value holding
24 4/3/2W Key In ohm/RTD measurement function, select 2W,3W or 4W
method.
25 AVG Key Measuring average value
26 ZERO Key Set the source value to default value

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5.3.Display 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 function
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
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
s：Unit of room temperature/ Tc(mV) or RTD(Ω) Unit of subsection value

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6 Before starting source/measurement
Operating Precautions
Precautions for Safe Use of the Instrument
When using the instrument for the first time, be sure to read the instructions given in Section 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 Handling 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, 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 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: 20 to 80% RH. Use the instrument under non-condensing condition.
Flat and level locations

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Do not use the instrument in locations that are
Exposed to direct sunlight or close to any heat source.
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:
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 18“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 or Replacing the Batteries
Warning
To avoid electrical shock, always remove the source or measurement lead cables from the object under test,
as well as from the instrument itself.
Caution
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 1: Remove the lead cables and charger and turn off the calibrator before you begin installing batteries.
Step 2: Remove the battery holder cover by sliding it in one-quarter counterclockwise direction and turn off the
calibrator.
Step 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 4: After replacement, reattach the battery holder cover.

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Indication of Battery Level
The battery replacement indicator shows the battery level in five steps according to the measured voltage of
the batteries.
Full battery:
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 the Charger
Warning
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 1: Make sure the calibrator is turned off.
Step 2: Insert the plug of the optional Charger into the Charger connection jack.
Note
Turn off the calibrator before connecting or disconnecting the Charger from AC power, plugging in/out the
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 On the 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 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 On/Off the 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
The 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”.

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7 Source
From the calibrator, you can source a DC voltage, resistance, thermocouple, RTD.
WarningTo 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 Vpk.
Caution
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 Ωon a round-trip basis) of the lead
cables serves as an error.
7.1 Connecting Cables to Terminals
For DC voltage, thermocouple (Figure 5)
Step 1: Connect the black lead cable for source to the COM output terminal and the red lead cable to the
“mVTc” output terminal.
Step 2: Connect the other ends of the cables to the input of
equipment under test while making sure the polarities are correct.
Figure 5: Sourcing DC voltage, TC

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For resistance and RTD signal (Figure 6)
Step 1: Connect black lead cables for source to the black terminal of Ω、RTD and the red lead cable to the red
terminal of Ω、RTD.
Step 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
7.2 Sourcing DC Voltage
Step 1: Using the〔
〔〔
〔mV〕
〕〕
〕key to select DC voltage source function, select the desired range from 100mV,
1000mV by pressing the〔
〔〔
〔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 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〕
〕〕
〕key initializes the output set point to the default value (0).
Step 3: The calibrator sources the DC-voltage signal between the output terminals.

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7.3 Sourcing Resistance
Firstly, the 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
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 0.1Ωon 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 0.1ųF, the calibrator may
fail to source correct resistance signals.
Step 1: Using the〔
〔〔
〔OHM〕
〕〕
〕key to select Ohm function. Using the 〔
〔〔
〔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 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〕
〕〕
〕key initializes the output set point to the default value(0).
Step 3: The calibrator sources the preset resistance value between the output terminals.

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7.4 Simulate Sourcing TC
The calibrator is designed with an internal temperature sensor. To calibrate a device with built-in reference
junction temperature compensation by sourcing a thermoelectromotive force with the calibrator without using
non-external 0℃reference junction compensation means, use the RJ sensor function. Select simulate TC
source function, in which RJ senor goes on work automatically. The “RJ-ON” mark displays on the screen.
Step 1: Using the〔
〔〔
〔TC〕
〕〕
〕key, select simulate TC source function. Using the〔
〔〔
〔RANGE〕
〕〕
〕key, select the desired
range from K, E, J, T, B, N, R, S, L, U. The selected function and the default range source value and unit shall
be shown in the main districts part of the LCD.
Step 2 :Set the output value digit by digit using each pair of〔
〔〔
〔〕
〕〕
〕/〔
〔〔
〔〕
〕〕
〕keys.
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〕
〕〕
〕key initializes the output set
point to the default value(the default value of a typical B type is 600℃).
Step 3: A thermoelectromotive force based on the temperature detected by the RJ sensor develops between
the output terminals.
Note:
If you don’t need the reference junction compensation, press the〔
〔〔
〔RJ-ON〕
〕〕
〕key to shut off. The calibrator source
a value with using external 0℃reference junction compensation means, and the “RJ-ON” mark vanishes.
Press the〔
〔〔
〔RJ-ON〕
〕〕
〕key once more to start the reference junction compensation and the “RJ-ON” mark displays
on the screen.
Tips:
The temperature unit is defaulted as ℃.To convert into ℉,see Chapter 10 “Factory Default” .
7.4.1 Temperature Monitor Function
The calibrator offers a temperature monitor function, which is convenient for the user to observe the voltage
value sourced between the output terminals in TC source function.
In TC source function, the assistance district of the LCD shows the voltage value sourced between the output
terminals,(varies responding to the changes of the reference junction compensation). Pressing the〔
〔〔
〔T.DISP〕
〕〕
〕
key once more, the assistance district of the LCD shows the preset room temperature value.

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7.5 Sourcing RTD
Firstly, the 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
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 to 3 mA at PT100,Cu10,Cu50, 0.05 to 0.3 mA at
PT200,PT500,PT1000.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 0.1Ωon a round-trip basis) to the sourced
resistance signal.
Step 1: Using the〔
〔〔
〔RTD〕
〕〕
〕key, select RTD function. Using the〔
〔〔
〔RANGE〕
〕〕
〕key, select a desired RTD range from
PT100, PT200, PT500, PT1000, Cu10, Cu50. The selected function and the default range source value and
unit shall be shown in the main district of the LCD and the type of the RTD shall be shown in middle port of the
LCD.
Step 2 :Set the output value digit by digit using each pair of〔
〔〔
〔〕
〕〕
〕/〔
〔〔
〔〕
〕〕
〕keys.
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〕
〕〕
〕key initializes the output set
point to the default value(0).
Step 3: The calibrator sources the preset resistance value between the output terminals.
7.5.1 Temperature Monitor Function
The calibrator offers a temperature monitor function, which is convenient for the user to observe the resistance
value sourced between the output terminals.
In RTD source function, LCD shows the resistance value sourced between the output terminals. Pressing the
〔
〔〔
〔T.DISP〕
〕〕
〕key once more, the assistance districts of the LCD shows the preset room temperature value.
7.6 Zero-off function
In any range of DC voltage, ohm, TC and RTD functions, pressing the〔
〔〔
〔ZERO〕
〕〕
〕key selects clearing off function,
which initializes the preset source value for the convenience of user to reset source value.

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8 Measurement
From the calibrator, you can measure a DC voltage, resistance, thermocouple, RTD and continuity.
Warning
In an application where the calibrator is used together with the supplied lead cables for measurement, the
allowable voltage to ground of the input terminals is 30 Vpeak maximum. To avoid electrical shock, do
NOT use the calibrator at any voltage exceeding the maximum voltage to ground.
The allowable voltage to ground when the supplied thermocouple convertor is attached to the input
terminals is 30V peak maximum. To avoid electrical shock, do not use the terminal adapter for measuring
any circuit voltage exceeding the maximum voltage to ground.
Tips:
With the〔
〔〔
〔HOLD〕
〕〕
〕key, you can hold the measured value.
The reading of a measured value is updated differently responding to different measurement function.
LCD shows “ - - - - - “on the upper part when shifting the range. If the input is over ranged, the measured
value on the LCD reads as “oL”.
8.1 Connecting Cables to Terminals
For DC voltage measurement (Figure 7)
Step 1: Connect the black lead cable for measurement to
the “COM” input terminal and the red lead cable to the ”mVTc3W” input terminal.
Step 2: Connect the other end of the cable to the measuring terminals of equipment under test while making
sure the polarities are correct.
Figure 7 Measuring DC voltage

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For thermocouple signal (Figure 8)
Step 1: Connect the thermocouple convertor to the input terminals. This will help you connect the cables
easily.
Step 2: Connect between TC terminals. The positive output lead wire of the thermocouple to the H terminal of
the thermocouple convertor and the negative output lead wire to the L terminal.
Figure 8 Measuring TC
Two wire connection method for continuity, ohm/RTD signal (Figure 9)
Step 1: Connect one black lead cable for measurement to the “COM” input terminal and Connect the red lead
cable to the ” ΩRTD” input terminal.
Step 2: Connect the two clips of the cables to the measuring terminals of equipment under test while making
sure the polarities are correct.
Figure 9 Measuring continuity ,ohm/RTD signal with 2w method

ELMTEC Ing. GmbH • Kattreppeln 28 • 38154 Königslutter • 05353 / 9545 - 0 • www.elmtec.de •
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Three wire connection method for ohm/RTD signal (Figure 10)
Step 1: Connect one black lead cable for measurement to the “COM” input terminal and another black lead to
the “mVTc3W” terminal. Connect the red lead cable to the ” ΩRTD” input terminal.
Step 2: Connect the three clips of the cables to the measuring terminals of equipment under test while making
sure the polarities are correct.
Figure 10 ohm/RTD signal with 3w method
Four wire connection method for ohm/RTD signal (Figure 11)
Step 1: Connect one black lead cable for measurement to the “COM” input terminal and another black lead to
the “mVTc3W” terminal. Connect one red lead cable to the ” ΩRTD” input terminal and another red lead to
“4W” terminal.
Step 2: Connect the four clips of the cables to the measuring terminals of equipment under test while making
sure the polarities are correct.
Figure 11 ohm/RTD signal with 4w method
Warning
Before connecting the calibrator to the device under test, cut off the power to the device.
Warning
If you make a mistake in wiring or in the operating procedure in this measurement task, there will be a danger
of not only damage to the instrument but also personal injury due to electrical shock. Exercise the utmost care
when carrying out the measurement task.

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8.2 Measuring DC Voltage
Step 1: Make sure the lead cables for measurement are not connected to the measuring instrument under
test.
Step 2: Using the〔
〔〔
〔mV〕
〕〕
〕key, select DC Voltage measurement function.
Step 3: Connect the lead cables for measurement to the measuring terminals of the measuring instrument
under test.
Step 4: Using the〔
〔〔
〔RANGE〕
〕〕
〕key, select a desired range from 50mV, 500mV. The selected function and the
measured value and unit shall be shown in the main districts part of the LCD.
8.3 Measuring Resistance
Step 1: Make sure the lead cables for measurement are not connected to the measuring instrument under
test.
Step 2: Using the〔
〔〔
〔OHM〕
〕〕
〕, select resistance measurement function.
Step 3: Connect the lead cables for measurement to the measuring terminals of the measuring instrument
under test as shown in Figure 9, Figure 10 or Figure 11.
Step 4: Using the measurement〔
〔〔
〔RANGE〕
〕〕
〕key, select the desired range from 500Ω,5K.The selected function
and the measured value and unit shall be shown in the main districts part of the LCD.
8.4 Measuring Temperature with Thermocouple (TC)
Note:
Any voltage higher than 30Vpk won’t work on the measured circuit if applying the thermocouple convertor to
the given input terminal.
Step 1: Make sure the lead cables for measurement are not connected to the measuring instrument under
test.
Step 2: Using the 〔
〔〔
〔TC〕
〕〕
〕key, select TC measurement function. Using the measurement 〔
〔〔
〔RANGE〕
〕〕
〕key, select
the desired range from K, E, J, T, B, N, R, S, L,U.
Step 3: Connect the thermocouple convertor to the jack under test as shown in Figure 8.The selected function
and the measured value and unit shall be shown in the main districts part of the LCD.
Tips:
If there has been a sudden change in the operating ambient temperature of the calibrator, wait until the
built-in reference junction compensation stabilizes. Avoid using the calibrator in locations exposed to wind
from such apparatus as an airconditioner.
8.4.1 Using RJ sensor
Select TC measurement function, in which RJ senor goes on work automatically, press〔
〔〔
〔RJ-ON〕
〕〕
〕key to shut off.
Both the “RJ-ON” mark and the environmental temperature display vanish. Press the〔
〔〔
〔RJ-ON〕
〕〕
〕key once more
to start the reference junction compensation and the “RJ-ON” mark displays on the middle of the screen, and
the environmental temperature displays on the screen.

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8.4.2 Temperature Monitor Function
The calibrator offers a temperature monitor function, which is convenient for the user to observe the voltage
value measured from the input terminals.
In TC measurement function, LCD shows the voltage value measured between the input terminals. Pressing
the〔
〔〔
〔T.DISPLAY〕
〕〕
〕key again, LCD shows the measured room temperature value in the assistance districts part
of the LCD.
8.5 Measuring Temperature with RTD
Step 1: Make sure the lead cables for measurement are not connected to the measuring instrument under
test.
Step 2: Using the〔
〔〔
〔RTD〕
〕〕
〕key, select RTD measurement function.
Step 3: Connect the lead cables for measurement to the measuring terminals of the measuring instrument
under test as shown in Figure 9, Figure 10 or Figure 11.
Step 4: Using the measurement〔
〔〔
〔RANGE〕
〕〕
〕key, select a desired range from
PT100,PT200,PT500,PT1000,Cu10,C50.The selected function and the default measured value and unit shall
be shown in the main districts part of the LCD.
Tips:
The calibrator offers the 2-wire/3-wire/4-wire connection method when measuring ohm/RTD.
8.5.1 Temperature Monitor Function
The calibrator offers a temperature monitor function, which is convenient for the user to observe the resistance
value measured from the input terminals.
In RTD measurement function, LCD shows the resistance measured between the input terminals. Pressing the
〔
〔〔
〔T.DISPLAY〕
〕〕
〕key again, LCD shows the measured room temperature value in the assistance districts part of
the LCD.
8.6 Measuring Continuity
Continuity measurement is used to detect the intactness of the circuit (e.g. a resistance lower than 50). Using
the〔
〔〔
〔
〕
〕〕
〕, select continuity measurement function. LCD displays continuity symbol “ ”on the upper part.
Connecting the devices as shown in Figure 9,the beeper sounds continuously if the loop circuit resistance
under measurement is less than 50Ω,and LCD shows the present measured resistance value.