Elmtec Ec 25 Technical manual

ELMTEC Ing. GmbH • Kattreppeln 28 • 38154 Königslutter • 05353 / 9545 - 0 • www.elmtec.de •

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Operation Instruction

Multifunction Calibrator

EC 25

ELMTEC

ELMTEC Ing. GmbH • Kattreppeln 28 • 38154 Königslutter • 05353 / 9545 - 0 • www.elmtec.de •

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1 Introduction

This multifunction process calibrator (the calibrator in the following) is a handheld, battery-operated

instrument that measures and sources electrical and physical parameters. (See Table 1)

Table 1 Source and Measurement Function

DCI CONT.

Measurement

Function

Sourcing

Function

DCV

LOOP

OFF

LOOP

OHM FREQ TC RTD SWITCH

DCV ●●●●●●●●●

RAMP ON ×××××××××

DCI

RAMP OFF ●●●●●●●●●

OHM ●●●●●●●●●

FREQ ●●●●×●●●●

PULSE ●●●●×●●●●

SWITCH ●●●●×●●●●

TC ●●●●●××●●

RTD ●●●●●××●●

Note：● indicating simultaneous use is allowed

×indicating simultaneous use is not allowed

Except the functions listed in Table 1, the calibrator has the following features as well:

You can operate the measurement and source function simultaneously. The LCD screen is divided

into two separate districts, whose upper part displays measurement information and lower part

displays source information.

TC measurement/source terminals and built-in lead connector of same temperature (RJ

compensation with auto-reference joint point)

Manual step source and auto -step and sweeping –step source

Room temperature monitoring under any operation

Measurement/source temperature monitoring function

Measurement/source mA% display

Measurement wave-filter function

Measurement manual-holding function

Pressure source auto-holding function

2 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.

Two set of Industrial testing Lead

A set of Testing Lead

A set of Alligator clip

A Thermocouple Convertor

A quick reference guide

A User's Manual

One Fuse 50mA/250V

One Fuse 63mA/250V

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3 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 2 for the explanation of the international electric symbols adopted by the calibrator or the

user’s manual.

Table 2 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 connect the probe of the testing lead with any live power when the other end has been

inserted into the current jack;

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;

When use the pressure module, do make sure the process pressure line is shut off and

depressurized before connecting or disconnecting the pressure module;

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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4 Familiar With the Calibrator

Figure1 Entire Graphic

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4.1 Measurement/ Source Terminals

Figure 2 shows the measurement /source terminals of the calibrator. Table 3 explains their use.

Figure 2 Measurement/ Source Terminals

Table 3 Measurement/ Source Terminals

Terminal Function

①All the common (return ) （-）terminals of measurement function

②Measurement

Signals（+）：DCV、OHM、FREQ、TC、RTD、SWITCH、CONT

③Measurement Signals（+）：DCmA

④3W Terminal：measurement terminal of the 3W OHM、RTD

LOOP Terminal：+24VDC Loop Power Terminal

⑤Source Signals：（+）DCmA

⑥Source Signals：（-）OHM、RTD

⑦All the common (return ) （-）terminals of source function

⑧

Source

Signal：（+）DCV、OHM、TC、RTD、XMT、FREQ、CYC、SWITCH

Source Signal：（-）DCmA

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4.2 Keys

Figure 3 shows keys of the calibrator. Table 4explains their use.

Figure 3 keys

Table 4 Functions of the keys

No. Name Function

1~5 Source value set Increment of source set point

6~10 Source value set Decrement of source set point

11 Measurement ON Turn on or off measurement function

12 Source ON Turn on or off source function

13 Power Turn on or off the power

14 Backlight Turn on or off the backlight

15 Measurement FUNC Select measurement function

16 Source FUNC Select source function

17 TEMP Turn on or off room temperature monitoring function. In TC source or

measurement function, turn on or off the RJ compensation function.

18 ZERO Set the source value to zero-point.

In pulse source function, set the pulse number.

19 Measurement RANGE Select measurement range Measurement mA and percentage shifting.

20 Source RANGE Select source range Source mA and percentage shifting.

21 AVG Measuring average valueRelative measured value of pressure

22 25/100% In mA source function, select 25% or 100% manual step output mode.

In pulse number, frequency or switch source, set the frequency value.

23 HOLD Measured value holding

Source pressure and measure contact simultaneously, releasing the

locked pressure reading.

24 START Source auto-pulse number, turn on mA auto-stepping or sweeping

function. Convert the sourced TC temperature and the mV, the

sourced RTD temperature and the Ohm.

25 LOOP 24v Loop circuit power

Convert the measured TC temperature and the mV, the measured

RTD temperature and the Ohm.

In DCmA source function ,select the auto-wave mode.

In frequency or pulse source, set the source amplitude.

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4.3 Display Screen

Figure 4 shows a typical display screen.

Figure 4 typical LCD display

a：Battery level indicator

b：Measurement

c：Measurement function on

d：Measurement function off

e：Average value for measurement

f：Display –hold for measured value

g：Switch measurement

h：Unit of room temperature

i：Beeper of measurement continuity

j：Measured value

k：Unit of measured value

l：Divide line of measurement and source mode displays

m：Types of RTD measurement / source

n：Divide line of measurement and source mode displays

o：Types of TC measurement / source

p：Reference Junction Compensation On

q：24V Loop Power Supply on

r：Source

s：Source function on

t：Source function off

u：Set -point for source

v：Set information for source

w：Unit of set -point for source

x：Measurement pressure reading zero off

y：Source pressure reading zero off

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5 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: 30 to 80% RH. Use the instrument under non-condensing condition.

Flat and level locations

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.

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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.

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. If the calibrator will be used under a wide variety of conditions, it is

advisable that the battery replacement indicator be verified under heavy loads (MEASURE mode is on

and the SOURCE mode is set to the 20 mA/10 V output).

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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.

Turning On/Off MEASURE Mode

The measurement function is in off state after turning on the calibrator.

If the MEASURE function is not needed and therefore turned off, power to the measurement circuit

is also turned off within the calibrator. Thus, you can save on battery power if the calibrator is

running on batteries.

Turning off the MEASURE function causes the on-screen measured value to disappear, and the

“OFF” indicator appears on the display simultaneous.

To resume measurement when the MEASURE function is off, press the key once again.

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

The LCD can be backlit. 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 30 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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6 Source

From the calibrator, you can source a DC voltage, DC current, resistance, thermocouple, RTD,

frequency, pulse signal or contact output.

Warning

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.

Caution

Do not apply any voltage to the output terminals for ranges other than 4-20mA simulating

transmitter output Otherwise, the internal circuitry may be damaged.

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.

6.1 Connecting Cables to Terminals

For DC voltage, thermocouple, frequency, pulse or contact output (Figure 5)

Step 1: Connect the black lead cable for source to the COM output terminal and the red lead cable to

the “VhzTcmA-” 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, frequency, pulse and contact output

For DC current (Figure 6)

Step 1: Connect the black lead cable for source to the “VhzTcmA-” output terminal and the red lead

cable to the ‘’mA+’’ 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 6 Sourcing DC Current

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For resistance and RTD signal (Figure 7)

Step 1: Connect the black lead cables for source to the ‘’ΩRTD’’ terminal and the red lead cable to the

“VhzTcmA-” 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 7 Sourcing Resistances and RTD

6.2 Sourcing DC Voltage

Step 1: Using the Function selector switch〔

〔〔

〔FUNC〕

〕〕

〕to select DC voltage source function, select the

desired range from 100mV, 1V, and 10V by pressing the〔

〔〔

〔RANG〕

〕〕

〕key. The default value and unit of

the selected source function and range shall be displayed in the lower 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: Pressing the〔

〔〔

〔ON〕

〕〕

〕key causes the indicator on the LCD to change from ‘’OFF‘’ to ‘’ON ‘’. The

calibrator sources the preset DC voltage between the output terminals.

Step 4: To turn off the output, press the〔

〔〔

〔ON〕

〕〕

〕key once again. The’’ OFF ‘’ appears on the LCD and

no signals sourced between the terminals.

6.3 Sourcing DC Current

Step 1: Using the Function selector switch〔

〔〔

〔FUNC〕

〕〕

〕to select the desired source function 20mA .The

default value and unit of the selected source function shall be displayed in the lower 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: Pressing the〔

〔〔

〔ON〕

〕〕

〕key causes the indicator on the LCD to change from ‘’OFF‘’ to ‘’ON ‘’. The

calibrator sources the preset DC voltage between the output terminals.

Step 4: To turn off the output, press the〔

〔〔

〔ON〕

〕〕

〕key once again. The’’ OFF ‘’appears on the LCD and

no signals sourced between the terminals.

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6.3.1 Manual Set 25%, 100% 4–20 mA Function

You can set the source value in 4 mA or 16mA increments or decrements within 4–20 mA current.

Step 1: In DC current function, press the〔

〔〔

〔25%100%〕

〕〕

〕key to display “25%SET” on the lower part of

the screen, and press once again to display “100%SET”.The default source value will be showed

simultaneously.

Step 2: Using each pair of 〔

〔〔

〔〕

〕〕

〕/〔

〔〔

〔〕

〕〕

〕output setting keys, set the signal in a step-by-step manner. In

25% set point condition, you can set the signal in 4 mA increments or decrements in the order 4-8-12-

16-20 by each press of the key. In 100% set point condition, you can set the signal in 16 mA increments

or decrements in the order 4-20 by each press of the key. Pressing the〔

〔〔

〔ZERO〕

〕〕

〕key initializes the

signal set point to the default value (4.00).

Step 3: Pressing the〔

〔〔

〔ON〕

〕〕

〕key causes the indicator on the LCD to change from ‘’OFF‘’ to ‘’ON ‘’. The

calibrator sources the preset 4–20 mA current signal between the output terminals.

Step 4: To turn off the output, press the〔

〔〔

〔ON〕

〕〕

〕key once again. The’’ OFF ‘’appears on the LCD and

no signals sourced between the terminals.

6.3.2 Auto-stepping and auto-sweeping 4-20mA function

You can set a 4–20 mA range within which to source out current in 4 -20mA increments or decrements

in auto –stepping mode or in auto-sweeping mode. It requires 80 seconds to finish a 4-20mA cycle for

auto-sweeping mode and 20 seconds for auto-stepping mode.

Step 1: In DC current function, press 〔

〔〔

〔〕

〕〕

〕key to display auto-stepping mode signal “ ” on the

lower part of the screen, and press once again to display auto-sweeping mode signal “ ”.The default

source value will be showed simultaneously.

Step 2: Pressing the〔

〔〔

〔ON〕

〕〕

〕key causes the indicator on the LCD to change from ‘’OFF‘’ to ‘’ON ‘’. The

calibrator sources the default 4–20 mA current signal between the output terminals.

Step 3: Pressing the〔

〔〔

〔START〕

〕〕

〕key starts the auto-stepping and auto-sweeping mode. The “RUN “

mark shall be displayed in the lower part of the LCD.

Step 4: Pressing the〔

〔〔

〔START〕

〕〕

〕key once more stops the auto-stepping and auto-sweeping mode. The

“RUN “ mark disappears. The terminals source the value displayed on the screen.

Step 5:Pressing the〔

〔〔

〔ON〕

〕〕

〕key stops sourcing and ‘’OFF’’ mark displayed on the screen. No signals

sourced between the terminals.

Tips:

Press the 〔

〔〔

〔START〕

〕〕

〕key again to continue the auto-stepping and auto-sweeping mode after

stopping them, and “RUN” mark displays on the lower part of the screen.

Using the〔

〔〔

〔START〕

〕〕

〕key to start mA auto-stepping and auto-sweeping mode is only available

when the source function is in ON state.

Starting the mA auto-sweeping mode needs to turn off the measurement mode, which is

unavailable when the auto-stepping mode is on. Otherwise, the LCD displays “NO .OP”. Thus, the

mA auto-stepping mode and the measurement function cannot work simultaneously.

6.3.3 mA% display

In mA source function, press the 〔

〔〔

〔RANGE〕

〕〕

〕key and converts the preset source value into mA% mode

in the following way, which will be shown on the lower part of the LCD.

100(current measured value mA-4mA)

mA %= %

16 mA

Press the〔

〔〔

〔RANGE〕

〕〕

〕key to return to the current preset value, which will be shown on the lower part of the LCD.

Tips:

You cannot undertake increment or decrement set in mA% mode. To achieve this, you need to press

the 〔

〔〔

〔RANGE〕

〕〕

〕key once more to return back to source set mode.

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6.3.4 4-20 mA simulate transmitter source

Connect the calibrator and the loop power as listed in Figure 8, and operate in steps shown in sourcing

DC current.

Figure 8 4-20 mA simulate transmitter source

6.4 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 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 18, “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 on 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F, the

calibrator may fail to source correct resistance signals.

Step 1: Using the function selector switch 〔

〔〔

〔FUNC〕

〕〕

〕, 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 lower 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).

ELMTEC Ing. GmbH • Kattreppeln 28 • 38154 Königslutter • 05353 / 9545 - 0 • www.elmtec.de •

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Figure 9 connection method based on three-wire and four-wire

Step 3: Pressing the〔

〔〔

〔ON〕

〕〕

〕key causes the SOURCE indicator on the LCD to change from ‘’OFF‘’ to

‘’ON ‘’. The calibrator sources the preset resistance value between the output terminals.

Step 4: To turn off the output, press the〔

〔〔

〔ON〕

〕〕

〕key once again. The ‘’OFF‘’ appears on the LCD and no

signals sourced between the terminals.

The connection method based on three-wire and four-wire are listed in Figure 9:

6.5 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 0C 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 middle part of the screen.

Step 1: Using the function selector switch〔

〔〔

〔FUNC〕

〕〕

〕, select simulate TC source function. Using

the〔

〔〔

〔RANGE〕

〕〕

〕key, select the desired range from K, E, J, T, B, N, R, S. The selected function and the

default range source value and unit shall be shown in the lower 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: Pressing the〔

〔〔

〔ON〕

〕〕

〕key causes the SOURCE indicator on the LCD to change from ‘’OFF‘’ to

‘’ON ‘’ . A thermoelectromotive force based on the temperature detected by the RJ sensor develops

between the output terminals.

Step 4: To turn off the output, press the〔

〔〔

〔ON〕

〕〕

〕key once again. The ‘’OFF‘’ appears on the LCD and

no signals sourced between the 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 middle of the screen.

Tips:

The TC source function is unavailable if the TC /RTD measurement function is on, which is only

usable when the calibrator is in non-TC or RTD measurement function.

Using the reference junction compensation, the present environmental temperature measured by

the RJ sensor is shown on the right conner of the LCD, which disappears when the reference

junction compensation is shut off.

The temperature unit is defaulted as ℃.To convert into ℉,see Chapter 10 “Factory Default” .

ELMTEC Ing. GmbH • Kattreppeln 28 • 38154 Königslutter • 05353 / 9545 - 0 • www.elmtec.de •

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6.5.1 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, pressing the〔

〔〔

〔START〕

〕〕

〕key ,LCD shows the voltage value sourced between the

output terminals,(varies responding to the changes of the reference junction compensation). Pressing

the 〔

〔〔

〔START〕

〕〕

〕key once more, LCD shows the preset temperature value.

Note: the preset value shall be changed only when the temperature displays.

6.6 Sourcing RTD