East Tester ET-2714 User manual

ET-2714 Thermocouple Calibrator
ET-1714 Thermocouple Calibrator
Users Manual
Hangzhou Zhongchuang Electron Co., Ltd.

Contents
1 Basic Introduction........................................................................................................... 1
1.1 Function............................................................................................................... 1
1.2 Summary of Source and Measure Functions....................................................... 1
1.3 Terminal Description............................................................................................2
1.4 Key Description................................................................................................... 3
1.5 Display Screen..................................................................................................... 4
2 Basic Operation...............................................................................................................5
2.1 Measure and Source............................................................................................. 5
2.2 Shutdown Mode................................................................................................... 7
2.3 Backlight Brightness Adjustment.........................................................................7
3 Function Usage............................................................................................................... 9
3.1 DC V Measurement..............................................................................................9
3.2 DC mV Measurement.......................................................................................... 9
3.3 DC mV Source..................................................................................................... 9
4 Using Thermocouple (TC)............................................................................................ 10
5 Simulating Thermocouples (TC)...................................................................................12
6 Advanced Application................................................................................................... 13
6.1 Setting 0 % and 100 % output parameters......................................................... 13
6.2 Auto Ramping the Output.................................................................................. 14
6.3 Factory Reset......................................................................................................14
7 Power............................................................................................................................ 15
7.1 Charge................................................................................................................ 15
8 Specifications................................................................................................................ 16
8.1 DC Voltage Measurement.................................................................................. 16
8.2 DC mV Output................................................................................................... 16
8.3 Thermocouple.................................................................................................... 17
9 Product Accessories...................................................................................................... 18
9.1 Standard accessories.......................................................................................... 18
9.2 Optional Accessories..........................................................................................18

10 Warning....................................................................................................................... 19

1
1 Basic Introduction
1.1 Function
Output of DC mV and simulation of thermocouple output.
Voltage, DC mV and thermocouple measurement.
Thermocouple(TC) measurement provides cold-junction compensation.
Manual stepping, automatic stepping, 0～100% phase step and slope output
Support for PC communication
1.2 Summary of Source and Measure
Functions
Function
Measure
Source
DC V
0～30 V
Not available
DC mV
0～100 mV
0～100 mV
Thermoco
uple
E,J,K,T,B,R,S,N
E、J、K、T、B、R、S、N
Others
Stepping output, ramp, phase step output, user-defined range

2
1.3 Terminal Description
Figure 1.3-1
No.
Name
Description
①
Communication and
charging connector
Connect the power adaptor to charge batteries or
connect the calibrator to the computer.
②
COM terminal
Measurement and output public terminal
③
V, mV, and TC terminal
Power supply, DC mV, thermal-resistance as well
as DC mV and thermal couple output terminal.

3
1.4 Key Description
Figure 1.4-1
No.
Description
①
Turns the power on or off
②
Selects measurement mode
③
Selects output mode
④
Turns backlight on or off. Turns Contrast Adjust mode on when
powering up.
⑤
Selects thermo-couple mode
⑥
Saves calibrator settings
⑦
Retrieves a previous calibrator setup from a memory location
⑧
Sets manual output
⑨
Cycles through:
Slow repeating 0%-100%-0% ramp

4
Fast repeating 0 % - 100 % - 0 % ramp
Repeating 0 % - 100 % - 0 % ramp in 25 % steps
⑩
Sets output by 0% of span, presses and holds to store the source value
as the 0 % value.
⑾
Decrements output according to 25% of span.
⑿
Increments output according to 25% of span.
⒀
Sets output by 100% of span. Press and hold to store the source value
as the 100 % value.
⒁
Selects voltage mode
⒂
Selects DC mV mode
1.5 Display Screen
Figure 1.5-1

5
2 Basic Operation
2.1 Measure and Source
This section acquaints you with some basic operations of ETX-2014/ ETX-1814.
Proceed as follows:
1. The connection of the calibrator as shown in Figure 2.1-1.
Figure 2.1-1
2. Press for more than 2 seconds to turn on the calibrator. The calibrator
checks itself, including check on internal circuit and LCD, during which, LCD
displays all contents for 1s as shown in Figure 2.1-2:
Figure 2.1-2
3. Then the type of product and automatic shutdown time will be displayed for 2

6
seconds as shown in Figure 2.1-3.
Figure 2.1-3
4. Press , enter into output mode selection
5. Press , switch to DC mV output mode. The screen will display as shown in
Figure 2.1-4
Figure 2.1-4
6. Press and to increase or decrease 1 of the horizontal line position (the
number automatic carry but the position of the line have no change); press or
to select a digit to change.
7. Press until the buzzer work to enter 0mV as 0% value.
8. Likewise, press to increase output value to be 100mV, and then press until
the buzzer works and select 100mV as 100% value.
9. Press or to step between 0 and 100% in 25% step increments.
The screen will display as shown in Figure 2.1-5.
Figure 2.1-5

7
2.2 Shutdown Mode
The calibrator comes with the shutdown mode enabled for a time duration set to 30
minutes (displayed for about 2 seconds when the calibrator isinitially turned on). When
the shutdown mode is enabled, the calibrator will automatically shutdown after the
time duration has elapsed from the time the last key was pressed. To disable the
shutdown mode, press and simultaneously. To enable the mode, press
and simultaneously. To adjust the time duration, press and
simultaneously, the screen will display as shown in Figure 2.2-1,then press and/or
to adjust the time between 1 and 30 minutes and then press to store the
new time duration (Without pressing any key for 5 seconds, the calibrator will quit
from the adjustment automatically).
Figure 2.2-1
2.3 Backlight Brightness Adjustment
To adjust the brightness of backlight, proceed as follows:
1. Please press until the buzzer works, then the screen will display as shown in
Figure 2.3-1:

8
Figure 2.3-1
2. Press and to adjust the brightness of backlight.
3. Press to save brightness level, will appear and then the calibrator
will enter into the work mode(Without pressing key for 5 seconds, the calibrator
will exit from the adjustment automatically).

9
3 Function Usage
3.1 DC V Measurement
The default function of the calibrator after start-up is voltage measurement. If it is
required, press to re-select the voltage measurement (the display unit is
V).Please connect the lines after all functions are selected. The connection mode and
interface are shown in Figure 3.1-1:
Figure 3.1-1
3.2 DC mV Measurement
Press to re-select the DC mV function (the display unit is mV), the connection
mode is same to voltage measurement.
3.3 DC mV Source
Press and to select the DC mV output , the connection mode is same to
that of voltage measurement. When the mill-volt is overload, there is sign of ,

10
meanwhile, the main display area flashes shown in Figure 3.3-1:
Figure 3.3-1
4 Using Thermocouple (TC)
The calibrator supports 11 types of standard thermocouples, including J, K, T, E, R, S,
B, L, U and N. Lower table summarizes the ranges and characteristics of the supported
thermocouples:
Graduation
Positive lead
material
Positive wire (H)
color
Negative lead
material
Specified
span℃
ANSI*
IEC**
E
Chrome-nickel
Mauve
Purple
Constantan
-200～950
N
Nickel-chrome
-silicon
Orange
Pink
Nickel-silicon-magne
sium
-200～1300
J
Iron
White
Black
Constantan
-200～1200
K
Chrome-nickel
Yellow
Green
Alumel
-200～1370
T
Copper
Blue
Brown
Constantan
-200～400
B
Platinum (30%
rhodium)
Grey
Platinum (6%
rhodium)
600～1800
R
Platinum (13%
rhodium)
Black
Orange
Platinum
-20～1750
S
Platinum (10%
rhodium)
Black
Orange
Platinum
-20～1750
* Negative conductor (L) regulated as American National Standard (ANSI) is always red.
*Negative conductor (L) regulated as International Electro-technical Commission (L) is always white.
To measure temperature using thermocouple, the following steps shall be followed:
1. Connect the thermocouple to the calibrator as shown in Figure 4-1:

11
Figure 4-1
Attention:
If the calibrator and the thermocouple plug are at different temperatures,
wait one minute or more for the connector temperature to stabilize after you
plug the miniplug into the TC input/output.
2. Press to select Measure mode.
3. Press for TC display as shown in Figure 4-2. If desired, pressing
continuously to select appropriate thermocouple type.
Figure 4-2
Process Temperature

12
5 Simulating Thermocouples
(TC)
Connect calibrator input/output terminal to the instrument to be tested using
thermocouple. The connecting diagram is shown below, Proceed as follows to simulate
a thermocouple:
1. Connect thermocouple to the TC input/output plughole of calibrator as shown in
Figure 5-1.
2. If necessary, press to select mode.
3. Press to select thermocouple function. If necessary, continue pressing the
key to select thermocouple graduation.
4. Press or to select temperature. Press or to select digit.
Figure 5-1

13
6 Advanced Application
6.1 Setting 0 % and 100 % output
parameters
As for stepping operation and percentage display, 0% and 100% should be set before
using. Some gear values have been set when delivered from the factory and set values
are illustrated below:
Output function
0% value
100% value
DC mV
0.00 mV
100.00 mV
Thermocouple J type
0.0 ℃
1000.0 ℃
Thermocouple K type
0.0 ℃
1000.0 ℃
Thermocouple T type
0.0 ℃
400.0 ℃
Thermocouple E type
0.0 ℃
800.0 ℃
Thermocouple R type
0℃
1500 ℃
Thermocouple S type
0℃
1500 ℃
Thermocouple B model
600 ℃
1800 ℃
Thermocouple N model
0.0 ℃
1000.0 ℃
The default set values may not meet your requirements, so which can be reset. Then
you can display the percentage with stepping or slope output as well as display the
percentage. Adjust the output value with keys , press or for a
long time until the buzzer works to define the new 0% or 100% values. The new
defined span value is saved in the calibrator storage automatically and remains
effective after restart. The flowing operations are available with the setting:
Press or for manual steeping (increase or decrease) output based

14
on 25% increment.
Press or instantly to make output jump within the span of 0% to
100%.
6.2 Auto Ramping the Output
Automatic ramping gives you the ability to continuously apply a varying stimulus from
the calibrator to a transmitter, while your hands remain free to test the response of the
transmitter.
When you press , the calibrator produces a continuously repeating 0 % - 100 % -
0 % ramp in your choice of three ramp waveforms:
0%-100%-0% 40-second smooth ramp
0%-100%-0% 15-second smooth ramp
0%-100%-0% Stair-step ramp in 25 % steps, pausing 5 seconds at each
step.
Exit the slop output function, please press any key.
6.3 Factory Reset
Factory reset consists of the following items:
The working status recovers to the voltage measurement.
Automatic shutdown time is reset to be 30 min, which is effective.
LCD backlight brightness is set to be 60%.
Output span is recovered to be factory default.
Start the calibrator and press until the buzzer works, and the recovery of factory
default will enter working mode when the recovery is completed.

15
7 Power
The calibrator needs 6 disposable LR03 model (size 7) alkaline batteries or 6 R03
model (size 7) nickel-metal hydride batteries (or nickel-cadmium batteries). The
longest service life of alkaline batteries can reach 50 hours.
A 12V/1A power adaptor is used for charging and providing working power for the
calibrator.
7.1 Charge
When the battery indicator is pointed at , the remaining electric quantity is less
than 20%. Charge is necessary for normal operation of the calibrator. The LCD
backlight will start operation and the will display on the screen when the power
adaptor is used. If the battery indicator flashes, the calibrator will be in the
charging process, after which the battery indicator will stop flashing.
The calibrator will stop charge automatically in case of the following circumstances:
Disposable batteries are used.
Electric quantity is enough.

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8 Specifications
Specifications are based on a one year calibration cycle and apply from +18℃to
+28 ℃unless stated otherwise. All specifications assume a 10 minute warmup period.
8.1 DC Voltage Measurement
Range
Maximum
measurement range
Resolution
Accuracy (% of reading + Counts)
ETX-1814
ETX-2014
30V
0V～31V
0.001V
0.05+2
0.02+2
100mV
-15mV～80mV
0.001mV
0.05+20
0.02+20
80mV～125mV
0.01mV
0.05+2
0.02+2
-10 ℃～ 18 ℃， +28 ℃～ 55 ℃ temperature coefficient,±0.005%FS/ ℃ .
Input resistance: ＞ 1MΩ.
8.2 DC mV Output
Range
Maximum output
range
Resolution
Accuracy (% of reading + Counts)
ETX-1814
ETX-2014
100mV
-15mV～99.999mV
0.001mV
0.05+20
0.02+20
100mV～125mV
0.01mV
0.05+2
0.02+2
-10 ℃～ 18 ℃， +28 ℃～ 55 ℃ temperature coefficient,±0.005%FS/ ℃ .
Maximum load: 1mA or 1kΩ （ It should be based on the lower load. ）

17
8.3 Thermocouple
Graduation
Range
Resolution
Accuracy (Ω)
ETX-1814
ETX-2014
J
-200℃～0℃
0℃～1200℃
0.1℃
1.5℃
1.0℃
1.0℃
0.7℃
K
-200℃～0℃
0℃～1370℃
0.1℃
1.8℃
1.2℃
1.2℃
0.8℃
T
-200℃～0℃
0℃～400℃
0.1℃
1.8℃
1.2℃
1.2℃
0.8℃
E
-200℃～0℃
0℃～950℃
0.1℃
1.5℃
1.0℃
0.9℃
0.7℃
R
-20℃～0℃
0℃～500℃
500℃～1750℃
0.1℃
4℃
2.5℃
2℃
2.5℃
1.8℃
1.4℃
S
-20℃～0℃
0℃～500℃
500℃～1750℃
0.1℃
4℃
2.5℃
2℃
2.5℃
1.8℃
1.5℃
B
600℃～800℃
800℃～1000℃
1000℃～1800℃
0.1℃
3.5℃
2.5℃
2℃
2.2℃
1.8℃
1.4℃
N
-200℃～0℃
0℃～1300℃
0.1℃
2.0℃
1.2℃
1.5℃
0.9℃
Errors of cold-junction compensation are not included in the table.
Accuracy of cold-junction compensation: 1.5 ℃