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ADT282
Dual-Channel Reference Thermometer Readout
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ADT282 Dual-Channel Reference Thermometer Readout
-------User Manual
[Version：2109V01]
Additel Corporation
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STATEMENT
This user manual provides operating and safety instructions for the ADT282 Dual-Channel
Reference Thermometer Readout. To ensure correct operation and safety, please follow the
instructions in this manual. Additel Corporation reserves the right to change the contents and other
information contained in this manual without notice.
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Content
1. Introduction ................................................................................................................................................................... 6
1.1 General Introduction .................................................................................................................................................. 6
1.2 Technical Specification ............................................................................................................................................... 7
1.2.1 General Technical Specifications ......................................................................................................................... 7
1.2.2 Technical Specifications of Signal Measurement (Environment Temperature: 20±10℃, 1 year accuracy) .......... 8
1.2.3 RTD Measurement .............................................................................................................................................. 9
1.2.4 TC Measurement ............................................................................................................................................... 11
1.3 Basic Structure ........................................................................................................................................................ 15
1.4 Power Supply ........................................................................................................................................................... 17
2. Display and functions ................................................................................................................................................. 18
2.1 Main Display ............................................................................................................................................................ 18
2.2 Screen Lock and Unlock .......................................................................................................................................... 19
3. Dual-Channel Thermometer Readout ........................................................................................................................ 20
3.1 TC Measurement ..................................................................................................................................................... 21
3.2 TC Measurement Setup ........................................................................................................................................... 21
3.3 RTD Measurement ................................................................................................................................................... 21
3.4 RTD Measurement Setup ........................................................................................................................................ 22
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3.5 Filter ......................................................................................................................................................................... 22
3.6 Zeroing ..................................................................................................................................................................... 23
3.7 Statistics .................................................................................................................................................................. 23
4. System Settings .......................................................................................................................................................... 24
4.1 Bluetooth .................................................................................................................................................................. 24
4.2 Power Management ................................................................................................................................................. 24
4.2.1 Display Brightness ................................................................................................................................ ............. 24
4.2.2 Battery Information ................................ ................................ ................................................................ ............ 24
4.2.3 Auto Backlight Off .............................................................................................................................................. 24
4.2.4 Auto Sleep ......................................................................................................................................................... 25
4.2.5 Auto power off .................................................................................................................................................... 25
4.3 Service ................................ ................................................................ ..................................................................... 25
4.3.1 Calibration ......................................................................................................................................................... 25
4.3.2 Maintenance ...................................................................................................................................................... 26
4.3.3 Factory Reset .................................................................................................................................................... 26
4.4 Personalization ........................................................................................................................................................ 26
4.4.1 System Sound ................................................................................................................................................... 26
4.4.2 Language .......................................................................................................................................................... 27
4.4.3 Date & Time ....................................................................................................................................................... 27
4.5 About Product .......................................................................................................................................................... 28
5. Data Management ....................................................................................................................................................... 28
6. APPs ......................................................................................................................................................................... 28
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6.1 Temperature Converter ............................................................................................................................................ 28
6.2 Sensor Library ......................................................................................................................................................... 29
6.3 Data Logger ............................................................................................................................................................. 29
6.4 Temperature Unit ..................................................................................................................................................... 29
6.5 Temperature Differential ................................ ................................ ................................................................ ........... 29
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Safety Instructions
Warning:
To prevent the user from injury, please follow this user manual for use.
To prevent fire, electric shock or personal injury, please do as follows:
1. General:
◆ Please read the user manual before using the product;
◆ Before using the product, please check the appearance of the product to ensure there is no damage;
◆ Please refer to the operation steps in the manual when using the product;
◆ If the product is damaged or malfunctions, please do not use it and contact Additel;
◆ Never use the product in an explosive, steam or dust environment.
2. Electrical:
◆ Before using the product, please make sure that the power supply is connected correctly, and the installation is
done properly.
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Attention：
To prevent injury, please obey the instruction manual for use
To prevent damage, please do as follows:
◆ Do not use the instrument in a high vibration environment;
◆ If the product is abnormal, please stop using it and contact with Additel.
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1. Introduction
1.1 General Introduction
ADT282 Reference Thermometer Readout delivers the best possible accuracies and features in the palm of your
hand! With accuracy capabilities on par with laboratory grade thermometers, the ADT282 is capable of handling even your
most critical measurements. This ultra-high precision readout features dual analog channels designed to facilitate
comparison measurements and meet all your temperature measurement needs. The easy-to-use touchscreen makes
navigating the well-designed menus a time saving and enjoyable experience. The Lemo style smart connectors help to
ensure that your probe calibration information is never in question. The ADT282 Reference Thermometer Readout helps
makes metrology simple and will quickly become your new go-to when reliable temperature measurements are necessary.
Contact us:
Additel Corporation
Tel: +1-714-998-6899
www.additel.com
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1.2 Technical Specification
1.2.1 General Technical Specifications
Table 2 General technical Specifications
Display
5.0 inch 480*800TFT LCD capacitive screen
Dimensions
16.97" x 4.13" x 2.04" (177 mm x 105 mm x 52 mm)
Weight
1.5 lbs. (0.65 Kg)
Power Supply
6600mAh, 23.8Wh lithium battery, charging time 4~6 hours, battery pack can be charged
independent. Battery life typically 16 hours
Environment
Specification guaranteed temperature range: (10~30)℃
Working Temperature: (-10~50)℃
Storage temperature: (-20~70)℃
Humidity: 0 % ~ 95% RH, non-condensing
Maximum altitude: 3000m
Warm-up Time
After 10 minutes of booting, specifications can be reached
Ports Protection Voltage
50Vmax
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CE Certificate
TUV IEC61326, IEC61010
Rohs Compliance
Rohs II Directive 2011/65/EU, EN50581:2012
IP Protection Level
IP67, 1 meter drop test
Communication
Isolate USB-TYPE C (slave), Bluetooth BLE
Input Channels
CH1, CH2 analog channel, 6 pins smart Lemo ports for RTD probe；MINI-TC ports for TC probe
Measurement Display
Single channel, dual channel, differential (e.g., T1-T2)
Measuring Rates
▪ CH1, CH2 analog channels alternately and cyclically measure
▪ RTD measuring rate: 1.6S/single channel, 1.6S/dual channel
▪ TC measuring rate: 0.8S/single channel, 0.8S/dual channel
Measurement Units
°C,°F, K
Statistics
Max, Min, Avg
1.2.2 Technical Specifications of Signal Measurement (Environment Temperature: 20±10℃, 1 year accuracy)
Table 3 Technical Specifications of signal measurement
Signal types
Range
Resolution
Accuracy
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RTD
0~400Ω
0.1mΩ
±0.5mΩ@（0~20Ω）, ±25ppm@（ 20~400Ω）
TC
-10~75mV
0.1uV
50ppmRDG+2uV
Internal CJC
NA
NA
±0.15℃（-10℃~50℃ Guarantee specification）
Notes
：
1. When the environmental temperature is (-10~+10)
℃
and(30~50)
℃
,the temperature coefficient is:
（1）RTD measurement: ±2ppmFS/
℃。
（2）TC measurement: ±5ppmFS/
℃。
2. RTD measurement excitation: 4 wires measurement, Constant current commutation, Excitation current: 1mA.
1.2.3 RTD Measurement
Table 4 RTD measurement (Environment temperature: 20±10℃)
RTD Types
Temperature(℃)
1 Year Accuracy(℃)
PT10(385)
-200~850
-200~200
0.014
200~600
0.024
600~850
0.033
PT25(385)
-200~850
-200~200
0.012
200~600
0.024
600~850
0.033
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PT50(385)
-200~850
-200~200
0.012
200~600
0.024
600~850
0.033
PT100(385)
PT100(391)
PT100(3916)
PT100(3926)
-200~850
-200~200
0.012
200~600
0.024
600~850
0.033
Cu10(427)
-200~260
-200~260
0.013
Cu50(428)
-50~150
-50~150
0.010
Cu100(428)
-50~150
-50~150
0.010
Ni100(617)
Ni100(618)
-60~180
-60~0
0.005
0~180
0.007
Ni120 (672)
-80~260
-80~260
0.007
Notes:
1. Conforms to the ITS90 international temperature standard, determined by the maximum tolerance of the RTD measurement, excluding
the accuracy of the probe;
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2. After connecting the probe, the combined accuracy can be calculated directly after the RSS (root-sum-square) of the probe accuracy
and RTD measurement accuracy;
3. Additel provides short SPRT PT100 probes.
1.2.4 TC Measurement
Table 5 TC measurement (Environment temperature: 20±10℃)
TC Types
Temperature Range(℃)
0℃ CJC compensation
1 Year Accuracy(℃)
Internal CJC compensation
1 Year Accuracy(℃)
S
-50~1768
-50~0
0.51
0.53
0~100
0.37
0.40
100~1768
0.28
0.32
R
-50~1768
-50~0
0.54
0.56
0~200
0.38
0.41
200~1768
0.25
0.29
B
0~1820
200~300
1.01
1.02
300~500
0.66
0.68
500~800
0.41
0.44
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800~1820
0.28
0.32
K
-270~1372
-250~-200
0.48
0.50
-200~-100
0.15
0.21
-100~600
0.08
0.17
600~1372
0.14
0.21
N
-270~1300
-250~-200
0.76
0.77
-200~-100
0.22
0.27
-100~1300
0.12
0.19
E
-270~1000
-250~-200
0.26
0.30
-200~-100
0.10
0.18
-100~700
0.06
0.16
700~1000
0.08
0.17
J
-210~1200
-210~-100
0.13
0.20
-100~700
0.06
0.16
700~1200
0.10
0.18
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T
-270~400
-250~-100
0.36
0.39
-100~0
0.08
0.17
0~400
0.05
0.16
C
0~2315
0~1000
0.16
0.22
1000~1800
0.26
0.30
1800~2315
0.42
0.45
D
0~2315
0~100
0.21
0.26
100~1200
0.16
0.22
1200~2000
0.27
0.31
2000~2315
0.42
0.45
G
0~2315
50~100
0.60
0.62
100~200
0.38
0.41
200~400
0.24
0.28
400~1500
0.16
0.22
1500~2315
0.32
0.35
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L
-200~900
-200~-100
0.07
0.17
-100~400
0.06
0.16
400~900
0.07
0.17
U
-200~600
-200~0
0.14
0.21
0~600
0.05
0.16
LR
-200~800
-200~0
0.09
0.17
0~800
0.06
0.16
A
0~2500
0~1200
0.20
0.25
1200~2000
0.33
0.36
2000~2500
0.48
0.50
Notes:
1. Conforms to the ITS90 international temperature standard, determined by the maximum tolerance of the TC mV measurement,
excluding the accuracy of the probe;
2. After connecting the probe, the combined accuracy can be calculated directly after the RSS (root-sum-square) of the probe accuracy
and RTD measurement accuracy;
3. Additel provides standard S-type TC probe with MINI-TC connector.
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1.3 Basic Structure
Figure 1 Basic Structure
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Table 6 Basic structure list
No.
Part Name
Description
1
Display
Touchable display and capacitive screen
2
Power button
For switch on/off.
3
USB slave port
For USB connection.
4
Adapter port
For power supply.
5
Lemo style port B
Unusable yet, reserved for future development.
6
Lemo style port A
Unusable yet, reserved for future development.
7
Mini TC sockets
To connect mini-TC cable for TC measurement
8
RTD measurement sockets
To connect RTD probed for measurement
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1.4 Power Supply
Smart lithium battery or external power adaptor power supply
⚫ The smart lithium battery can be charged independently by using the power adaptor
⚫ The power adapter quickly adapts to various countries power plugs
Figure2 Power adaptor and various countries power plugs
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2. Display and functions
2.1 Main Display
The main operational interface is divided into three parts from top to
bottom. The top section is the status bar, the middle section is the APPs list,
and the bottom section is the main function navigation. (Figure 2-1)
1. The status bar includes time and date, battery status, lock screen
status, Bluetooth and message control center.
Note: Click the status bar to enter the control center to view and
control multi-function projects.
2. The APPs list shows all applications provided by the device,
including data logging, pressure unit converter, temperature
converter and sensor library.
3. The Main function navigation section provides access to three
main functions at the bottom of the screen: Dual-Channel
Thermometer Readout, Data Management and System Setup.
Figure 3 Main display
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2.2 Screen Lock and Unlock
Lock screen: Click the status bar to enter the control center, you can click to lock the current screen to avoid
accidental operations. When the screen is locked, the icon will be displayed in the status bar, and all operations are
greyed out and prohibited on the screen.
Unlock screen: When the screen is locked, click the status bar to enter the control center to unlock the screen.
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3. Dual-Channel Thermometer Readout
Dual-Channel Thermometer is one of the main functions of the device
(figure 4). It can measure RTD and TC, both channels can be displayed at
the same time, each channel measures a signal separately.
The measured signal value of the channel is displayed in the middle of
the channel in real time, and the current signal type information is displayed
on the upper left. Click the icon to switch the signal type. Click the menu
icon in the upper right corner to set the current channel in the pop-up
menu. Click the zeroing icon (when the channel supports it) to perform
the zeroing operation on the current channel. If the signal type selected in
the channel has multiple values for display (for example, when measuring
TC, in addition to the temperature value, there are also the original mV
signal value and the cold junction temperature value), then the channel will
also display the main signal value. Other signal values are shown below.
The icons and in the upper right corner indicate whether the
current temperature measurement channel is open and being displayed,
click these icons to open or close the corresponding channel.
Figure 4 Thermometer
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3.1 TC Measurement
There are 2 mini-TC sockets on the top of the unit, corresponding to two different channels. After connecting the
TC to the device, click the type switch menu or of the corresponding temperature channel and select the TC to
execute the TC measurement function.
3.2 TC Measurement Setup
Click “Setup” in the TC measurement menu to enter the TC setup. The following parameters can be set in this menu.
Table 7 TC Measurement Setup
Menu Selection
Effective value
Description
TC types
mV/TC sensors
Choose the TC sensors
Cold junction type
Internal/External/Custom
Choose the mode of cold junction. Built-in cold
junction of device is used for Internal mode.
External cold junction compensation range
-80~300℃
Apply to external cold junction mode.
Temperature unit
K/℉/
℃
Choose temperature unit
Resolution
0/0.1/0.01/0.001
Number of displayed decimal places
3.3 RTD Measurement
There are 2 Lemo style RTD measurement sockets on the top of the unit for connecting RTDs. After connecting the
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RTD to the device, click the type switch menu or of the corresponding temperature channel and select the RTD
to execute the RTD measurement function.
3.4 RTD Measurement Setup
Click “Setup” in the RTD measurement menu to enter the RTD setup. The following parameters can be set in this
menu.
Table 8 RTD Measurement Setup
Menu Selection
Effective value
Description
RTD Types
Ω/RTD sensor types
Choose the RTD sensors
Temperature unit
K / ℉/
℃
Choose temperature unit
Resolution
0/0.1/0.01/0.001
Number of displayed decimal places
3.5 Filter
The ADT282 Dual-Channel Thermometer Readout provides two filtering methods: first-order linear filtering and
average filtering to meet the needs of different usage scenarios. Click the menu icon of measurement channel to
select the filter menu icon in the pop-up menu and the filter setup interface will be displayed. (Table 9)
Table 9 Filter Setup
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Menu Selection
Valid Value
Description
Enable/disable
Enable/disable
Set filter enable
Method
First-order filter/Average filter
Select filter method
Coefficient
0.01~1
Only available for first-order filter
Number of filter samples
1~100
Only available for average filter
Number of extremum pairs
0~10
Only available for average filter
3.6 Zeroing
mV and resistance signals provide short-circuit zeroing operation to eliminate zero-point drift. The allowable zeroing
range is 1% FS.
3.7 Statistics
Click the menu icon in the measurement channel and select the statistics menu in the pop-up menu, the
maximum value Max, minimum value Min and average value Avg of the data will be displayed on the bottom of the
channel display. Click the reset icon on the top of the channel to reset the statistics.
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4. System Settings
In the main screen of the device, click the system settings button at the bottom right to enter the system settings
interface. This page contains Bluetooth, power management, service, personalization, and about product.
4.1 Bluetooth
The calibrator has the Bluetooth communication function. Click the "Bluetooth" menu in the system setting interface to
enter the Bluetooth communication setting interface. The Bluetooth communication setting interface provides the enable
and disable of the Bluetooth communication function and the query function of the Bluetooth device name and physical
address.
4.2 Power Management
4.2.1 Display Brightness
The LCD display brightness of the calibrator can be modified by adjusting the brightness progress bar.
4.2.2 Battery Information
This option
displays the current battery connection status and information.
4.2.3 Auto Backlight Off
◆ If there is no button activity or communication command operations within the set time, the backlight brightness
will be set to the lowest automatically;
◆
Backlight time can be set to: Never, 30 seconds, 1 minute, 5 minutes, 15 minutes, and 30 minutes.
◆ After the backlight is turned off, the first operational touch will restore the backlight to normal brightness, then, the
subsequent touches will take effect normally.
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4.2.4 Auto Sleep
◆ If there is no button activity or communication command operation within the set time, the backlight will be turned
off automatically and start the auto sleep feature After the set time is up, the unit will go into the sleep status;
◆
The auto sleep timer can be set to: Never, 1 minute, 5 minutes, 15 minutes and 30 minutes.
◆
When using the power adapter for a power, the unit will never sleep;
◆
When the unit is running a data logging session, it will not sleep.
◆
If the backlight time is set to never, then the automatic sleep time setting is invalid.
4.2.5 Auto power off
◆ If there is no button activity or communication commands detected within the set time, the backlight will turn off,
and the automatic shutdown timing will start after the start of auto sleep. After that time is up, the unit will be power off
automatically.
◆
The auto power off timer can be set to: Never, 5 minutes, 15 minutes, 30 minutes, 1 hour and 2 hours.
◆
When using the power adapter for a power supply, it will not power off automatically;
◆
When the unit is running a data logging session, it will not power off automatically.
◆
If the backlight time is set to never, then the automatic power off time setting is invalid.
4.3 Service
4.3.1 Calibration
Click the “calibration” menu in the system setting interface and input the calibration password “123456” in the pop-up
box to enter the system calibration interface. All the measurement signals in the device can be calibrated in the system
calibration interface. The calibration process is as follows:
1) Select the item to be calibrated in the items list.
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2) Use a high-precision standard device, after fully warming up, follow the calibration guide in the interface and
click the "Start" button to start the calibration.
3) According to the reference calibration point provided on the system, select the appropriate standard value and
enter it.
4) Click the "Finish" button to write the calibration data into the system to complete the calibration.
5) Click the "Restore" button at the bottom left of the calibration interface to restore the field calibration data of the
device.
4.3.2 Maintenance
A password is required to access to this function. The factory default password is 123456.
◆
Maintenance records: The maintenance information can be viewed and edited.
◆
Calibration records: The calibration records can be viewed here.
◆
Operation information: The atmospheric pressure, motherboard and battery information.
◆
Error log: The error records can be viewed here.
4.3.3 Factory Reset
A password is required to enable this function. The factory default password is 123456.
◆
Restore the factory will not delete the system calibration data.
4.4 Personalization
4.4.1 System Sound
The volume of the Dual-channel Thermometer Readout can be modified by adjusting the volume progress bar. In
addition, the prompt tone can also be configured. (Table 10)
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Table 10 Sounds Settings
Menu Selection
Valid value
Description
Touch-tone
On/off
Set the touch-tone
Beep
On/off
Set the beep
Over-range beep
On/off
Set the over-range beep
Snapshot beep
On/off
Set the snapshot beep
Stable beep
On/off
Set the stable beep
4.4.2 Language
The device provides multi-languages which can be selected through this menu.
After the language is selected, the device needs to be rebooted for the change to take effect.
4.4.3 Date & Time
The data and time and format can be set as need, see Table 11.
Table 11 Data and time settings
Menu Selection
Valid value
Description
Date
2020-1-1 ～ 2048-12-31
Date setting
Time
00:00
～
23:59
Time setting
Date format
year-month-day / month-day-year /
day-month-year
Date format setting
Delimiter
-
，/，
.
Delimiter setting
Time zone
UTC±00:00
～
12:00
Time zone setting
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24 hours setting
Enable
Enable 24-hour display settings
4.5 About Product
Product information is read-only information, including basic information, version information and operating
information:
◆
Basic Information: including product model, serial number and system version information.
◆
Module Information: including Bluetooth and temperature board version.
5. Data Management
◆
The data Management menu is classified and managed by different functional modules, and the data saved by each
function is managed in the corresponding folder, which is convenient for users to review.
◆
The types of data files that can be saved include: Snapshot and Data Logger.
◆
Users can delete data files in batches.
6. APPs
6.1 Temperature Converter
The Dual-channel Thermometer Readout also provides a temperature converter application for various industrial
RTDs, TCs, and custom sensor types, which can easily convert between temperature and electrical signals for different
sensors.
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6.2 Sensor Library
To meet the needs of user’s sensor types, the unit provides a sensor library function. Users can define new senor
types according to their needs and set parameters in the sensors. The sensor library supports four types of custom
sensors: ITS-90, CVD, Custom RTD and Standard TC.
6.3 Data Logger
The Thermometer Readout provides a data logging function. Users can set channels parameters for data logging.
After editing the sampling settings, click the start icon again to start data logging. The settings are shown in Table 12.
Table 12 Data logger parameters settings
Subject
Valid value
Description
Logging interval
0.5~100
Data logging interval time
Logging points
2~100000
Number of logged data
Logging time
1~10000000
Logging Duration
6.4 Temperature Unit
Users can calculate the temperature in 3 different temperature units, ℃, K and °F.
6.5 Temperature Differential
The Readout provides a Temperature differential function. Users can calculate the temperature differences between 2
channels with this function.
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