Chuangkai Electronic CKT2516 User manual

Operation Manual for DC Resistance Tester
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USER MANUAL
CKT2516/2516A/2516B
CKT2515A/2516B

Operation Manual for DC Resistance Tester
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Catalog
Chapter 1 Instrument inspection and preparation .......................3
1.1 The crates ....................................................3
1.2 Power connection ..............................................3
1.3 Fuse and toggle switch ........................................3
1.4 Environmental requirements ....................................4
1.5 Test fixture requirements .....................................4
1.6 Accuracy guarantee ............................................5
Chapter 2 Brief introduction ..........................................5
2.1 Description of the front panel ................................6
2.2 Description of the rear panel .................................6
2.3 Basic operation ...............................................7
2.4 Data storage format ...........................................7
Chapter 3 Function ...................................................7
3.1 < MEAS DISP > .................................................7
3.2 < STATS DISP > ................................................8
3.3 < MEAS SETUP > ...............................................10
3.4 < CORR SETUP > ...............................................10
3.5 < T SETUP > ..................................................12
3.6 < SYSTEM SETUP > ............................................155
3.7 < COMM SETUP > ..............................................155
3.8 < ABOUT > ...................................................166
3.9 <INTER Files List>、<EXT Files List> ........................177
Chapter 4 performance ................................................18
4.1 accuracy ....................................................188
4.2 speed ........................................................20
Chapter 5 HANDLER interface ..........................................20
5.1 HANDLER interface introduction(DB9) ..........................20
5.2 HANDLER application ..........................................21
Chapter 6 Appendix ...................................................22
Statement: in this paper, the content of the instrument. Our company
have the right to the instrument performance, appearance, function,
accessories, packing and so on to improve and improve without further
instructions! The resulting manual do not agree with instruments of
confusion, can contact us through the following ways.

Operation Manual for DC Resistance Tester
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Chapter 1 Instrument inspection and preparation
Please be sure to check the receipt of the instrument, and must
understand and have the condition before using the instrument.
1.1 The crates
After receiving the product, it is found that the packing is badly
damaged. Please check the instrument, and determine whether the
instrument is not damaged and can be used normally.
Check the machine, if the instrument is damaged, please contact the
dealer or the company in charge of the business.
Please check the attachment, please check the attachment according
to the packing list, if the attachment is missing or damaged,
please contact your dealer or division to protect your rights and
interests.
1.2 Power connection
（1）Power supply voltage range：
100 ～120 Vac（The power supply of the instrument rear panel is
selected as 110V display）
198 ～242 Vac（The power supply of the instrument rear panel is
selected as 220V display）
（2）Frequency range of power supply：47 ～63 Hz。
（3）Power supply range：>= 30 VA。
（4）Wire-L、Wire-N、Groud-E should be the same as the power plug of
the instrument.
The instrument has been carefully designed to reduce the
interference caused by the input of the AC power supply side, but
still should try to make it in low noise environment, if you can
not avoid, please install the power filter.
Warning: in order to prevent leakage of equipment or artificial
damage, the user must ensure that the power supply to the earth
ground reliable.
1.3 Fuse and toggle switch
Instrument factory has been equipped with a fuse, the user should
use the company equipped with a fuse.
Warning:
You should pay attention to the position of the toggle switch is

Operation Manual for DC Resistance Tester
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consistent with the power supply voltage range of power on before.
1.4 Environmental requirements
（1）Please do not use in the dust, vibration, direct sunlight,
corrosive gases, such as the use of bad environment.
（2）Instrument is not used for a long time, please put it in the
original packing box or similar to the box in the reservoir is 5
to 40 DEG C temperature, relative humidity is not more than 85% RH
of the indoor ventilation, air should not contain harmful impurity
in corrosion measurement instrument and should avoid direct
sunlight.
（3）Please ensure that the instrument is in good ventilation condition,
do not plug the instrument cooling and ventilation holes.
（4）In particular, the instrument is connected with the test wire of
the test piece to be far away from the strong electromagnetic
field, so as not to interfere with the measurement.
1.5 Test fixture requirements
Please use the company's test fixture or test cable, the instrument
test fixture or test cable should be kept clean, the test device pin to
keep clean, to ensure that the test device and the fixture is in good
contact. The test fixture or test cable is connected to the HD, HS, LS and
LD of the front panel of the instrument. The shield layer can be connected
to the rear panel of the instrument, and the shield layer can be connected
with the rear panel of the instrument.
User homemade or other company test fixtures or test cables may
result in incorrect measurement results.

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1.6 Accuracy guarantee
（1）In order to ensure the accurate measurement of the instrument,
the heating time should be no less than 15 minutes.
（2）Do not frequent switching equipment, in order to avoid confusion
caused by internal data.
（3）Correct open circuit and short circuit operation.
（4）Short：When using 20mΩand 200mΩrange, should be first
cleared and then tested, and in other ranges generally do not
have to be cleared. See < user correction >.
（5）Rear panel ground terminal：When the resistance is too small or
too large, the test result may be beating, the user can put the
measured resistance into a metal shell, and then connect the
ground connection to the shell, it can reduce the beating. Note:
at any time the ground connection should not be in contact with
the test terminal.
（6）Do not open the test fixture too long time in 20mΩand 200mΩ
range. In the 20mΩand 200mΩrange, the output end of test
voltage is limited within 1V, if the test terminal open too long
time, when the switch range to high range, there will be digital
jumping phenomenon.
Chapter 2 Brief introduction
This series of DC resistance tester is designed for testing various
kinds of resistance, and has the function of comparison. When comparing
the state, can choose to display the resistance value or percentage
ratio, and can be judged by the set value of the resistance value is
high, low or good quality. At the same time, the machine is connected
with the mechanical processing equipment, and the sorting interface can
be connected with the mechanical processing equipment.
Application: coil, inductor, transformer, relay contact resistance,
resistors, fuse, connector cable resistance, PCB line resistance,
welding hole resistance, conductive film, metal detection etc.. The
temperature compensation function eliminates the influence of
temperature on the test, the temperature conversion function can
effectively measure the temperature of the device in the measurement.
CKT2516, CKT2515A, CKT2515B with statistical functions, can
effectively assess the production capacity, is conducive to the
production of the enterprise to control. CKT2515B, CKT2515A has a
temperature compensation function.

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This series of instruments also have a variety of communication
interface, which is conducive to do statistical monitoring function, or
the composition of automatic test system.
This series of instruments with a variety of configurations, see
appendix.
2.1 Description of the front panel
1. Power switch 2. Instrument type label
3. USB interface 4. Tool key
5. Test terminal：LD、LS、HS、HD 6. 4.3 inch TFT LCD screen
7. Softkey 8. Direction key
9. PASS light，Qualified judgment lamp
10. FAIL light，Failure product judgment lamp
11. MEAS, Measurement display page shortcut key
12. SETUP, Measurement set page shortcut key
13. SYSTEM, System settings page shortcut keys
14. FILE, File management page shortcuts
15. TRIG, Trigger measure key 16. ESC, Cancel key
17. ，Backspace key, used to delete the previous input
18. OK，Confirm input key
19. Alphanumeric keypad symbols
2.2 Description of the Rear panel

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1. RS232C, serial port 2. GPIB interface
3. COM interface（Reserve）4. Power supply socket
5. Power switch（110V/220V）6. Ground
7. USB DEVICE interface 8. HANDLER，Sorting interface
9. FOOT.C，Foot switch interface
10. TC SENSOR，Temperature sensor interface
2.3 Basic operation
1. Direction key: used to move the cursor.
2. Soft keys, used to change the parameters set of features.
3. Shortcut menu: MEAS, SETUP, SYSTEM, FILE, press directly into the <
MEAS DISP >, < MEAS SETUP >, < SYSTEM SETUP >, < INTER/EXT Files List>
function page settings.
Reminder: when in < MEAS DISP > page, and the cursor in < MEAS DISP >,
press MEAS key, < MEAS DISP > page test results will be full screen
display.
4. TOOL：Tool key，In each function page tool will be different.
When the short press TOOL key, key area will be a corresponding
tool operation, short press TOOL key again, the tools menu disappear.
When long press tool button for one second, the instrument into the
key lock state, pressing other keys invalid; again the press tool button
for one second instrument will remove key lock state.
2.4 Data storage format
USB storage, use the TOOL key in the measurement of the page, there will
be data storage function. The basic form is as follows:
<A>，<COMP>[，<Cp>，<CpK>，<NUM>][，<T>]
A：When the instrument shows the resistance, A is the resistance
value.When the instrument shows the percentage deviation, A is the
percentage of the percentage. The difference is that when press [SAVE
DATA1] key, A is the scientific data,but when press [SAVE DATA2] key , A

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is the unit value (the same as the LCD screen).
COMP：0——No comparison 1——PASS
2——HIGH 3——LOW
The Cp, CpK, and NUM will be stored only when the instrument supports
statistical functions and opens the statistical function. When the CpK
and Cp do not exist, they are saved as "----". Only when the instrument
supports temperature function and the temperature function is opened, T
is effective.
Chapter 3 Function
3.1 <MEAS DISP>
This page can be set as follows:
MEAS DISP ：To select measure display or statistics display,or select
SHORT
to clear all range .
RANGE ：AUTO,HOLD,INCR+,DECR-，Choose INCR+ or DECR- to change RANGE.
SPEED ：FAST、MED、SLOW、[FAST2]（See Appendix description）
COMP ：ON、OFF. Choose to open or close the compration function.
STATS ：ON、OFF. Choose to open or close the statistics function.
R ：Press key to change FONT SMALL or FONT LARGE,DISP ON or DISP
OFF,
DEV % ON or DEV% OFF（Note 1）
MODE ：△%、△ABS （Note 2）. Choose to change the compration mode.
NOM ：Enter a standard data through the numeric keys.
HIGH,LOW ：Choose NO or OFF to open or close the HIGH and LOW limit，
Or use the numeric keys to input（Note 3）
SHORT ：ON,OFF,SHORT.Choose ON or OFF to open or close this function,
and choose SHORT to clear all range
LOAD ：ON,OFF.Choose ON or OFF to open or close this function,
Note 1：When DEV % is selected，the value of display is:
DEV % = (the test value – the NOM value)*100/the NOM value (%)
Note 2：△% is percentage comparison mode.
If the value of （the test value-the NOM value）*100 /the NOM
value [%] is between the LOW value and the HIGH value, then the
result is good, or the result is no good.
△ABS is absolute deviation comparison mode，
If the value of （the test value-the NOM value）is between the
LOW value and the HIGH value, then the result is good, or the
result is no good.
Note 3：If use statistical functions, the HIGH and LOW limits must be

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set.
Note 4：When the cursor is on the MEAS DISP, press the MEAS key to
display the results of the full screen.
3.2 <STATS DISP>
Only CKT2516、CKT2515A、CKT2515B have this function.
This page only statistics can be operated
STATS：ON ,OFF ,RESET .Choose ON or OFF to open or close this function.
And choose RESET to Clear all statistics values.
The page display parameters and status are as follows:
R ：measurement result
Num ：The effective number of statistics, the maximum number of
instruments can be counted 30000 times.
Cp、CpK ：Process capability ：Mean value of measured
results.
σ：General standard deviation. S ：Standard deviation.
IN ：Qualified number.
HI ：the number of results higher than the upper limit
LO ：the number of results lower than the upper limit
Max ：Maximum value.
MaxNum ：Serial number of Maximum value.
Min ：Minimum value.
MinNum ：Serial number of Minimum value.
HIGH、LOW：The upper and lower bounds of the actual calculation are
calculated
according to the HIGH and LOW limits of the MEAS DISP page.
SHORT ：Display the status of SHORT.
LOAD ：Display the status of LOAD.
The calculation formula is as follows：
x
xn 
（ ）
2
2
x nx
n



n
 
（ ）
2
2
1
x nx
sn



1n



1
| |
6n
Hi Lo
Cp





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1
| | | 2 |
6n
Hi Lo Hi Lo x
CpK


   

In the above formula, n is the effective sampling number, Hi and Lo are
the upper and lower bounds of statistics.
CpK, Cp is to test the process capability of the production process.
Usually in accordance with the following criteria:
………………………… Process capability is perfect.
, 1.33Cp CpK 
……………… Process capability is qualified.
1.33 , 1.00Cp CpK 
………………………… Process capability is poor.
1.00 ,Cp CpK
Note：
Cp,CpK and s are not present when an effective sampling is only one
time. When s=0，Cp=CpK=99.99
The maximum value of Cp，CpK is 99.99
When CpK<0，we let CpK=0.
3.3 <MEAS SETUP>
This page can be set as follows:
MEAS SETUP：MEAS SETUP，CORR SETUP，T SETUP（only CKT2515A/B）
AVERAGE ：INCR+，DECR-，or press the number keys to input 1~255 values
and
press OK key to enter.(default:1)
RangeDwell：INCR+，DECR-，or press the number keys to input 0~9999
values
and press OK key to enter.(default:0,unit:ms)
TrigSource：INT，EXT
TrigDelay ：INCR+，DECR-，or press the number keys to input 0~9999
values
and press OK key to enter.(default:0,unit:ms)
TrigEdge ：RISING,FAILING.( Rising edge, falling edge.)
Handler ：CLEAR,HOLD,PULSE.
PulseWidth：INCR+，DECR-，or press the number keys to input 1~9999
values
and press OK key to enter.(default:1,unit:ms)
Station ：INCR+，DECR-，or press the number keys to input 0~30 values
and
press OK key to enter.(default:0)
LineFreq ：50Hz，60Hz。
Note：

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If [TrigSource] is INT, Instrument continuous measurement. If
[TrigSource] is EXT, triggered by the front panel TRIGGER key
trigger, or through the rear panel FOOT.C or HANDLER trigger, or
through the bus command.
Trigger edge is used to determine the external HANDLER trigger.
HANDLER output comparison result signal (including PASS, HIGH, LOW,
EOT):
CLEAR：After receiving the trigger signal, the instrument first
reset the comparison result signal, and then the new signal is
output after the test is finished;
HOLD：The original state is maintained only when the signal is
changed;
PULSE：The output of the instrument is low level pulse signal.
Station：Can make the comparison result signal delay n times
measured output, 。
0 30n 
LineFreq：According to the location of the user's choice of working
power frequency, can improve the stability of the test.
3.4 <CORR SETUP>
Tip: Please use this page functions with caution. The wrong
operation will lead to the error of the measurement data of the
instrument.
The priority of the internal mathematical operation of the
instrument: SHORT > LOAD
This page can be set as follows:
SHORT ：ON，OFF，SHORT.
LOAD ：ON，OFF.
RES ：ON，OFF.
REF ：Press the number key to input the standard value of
resistance
measured, and press OK key to enter.
MEAS ：MEAS
TEMP ：ON，OFF（This option requires the instrument to support
temperature function）
REF ：Press the number key to input the reference value of current
temperature, and press OK key to enter.
MEAS ：MEAS.
Note：
SHORT：When SHORT, the test fixture is in contact with the
following

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figure.
LOAD：
A. Refer to the following steps:
1．Move the cursor to the REF position below the RES and enter the
standard value of the standard part to be tested with numeric
keys and OK key;
2．The standard parts connected to the test terminal, move the
cursor to the MEAS, press the MEAS button on the upper right
corner of the screen, the MEAS value is obtained;
3．Move the cursor to RES, select ON to open it;
4．Move the cursor to LOAD, select ON to open it;
5．After the completion of the above operation, the user can test
the
same product batch.
B. The user can use this function to calibrate the temperature
when the temperature is measured by using different temperature
sensors.
1. Move the cursor to the REF position below the TEMP and enter
the
standard value of the standard part to be tested with numeric
keys
and OK key;
2. Move the cursor to the MEAS, press the MEAS button on the upper
right
corner of the screen, the MEAS value is obtained;
3. Move the cursor to TEMP, select ON to open it;
4. Move the cursor to LOAD, select ON to open it;
3.5 <T SETUP>
Only CKT2515A, CKT2515B has this function.

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This page can be set as follows:
TEMP ：OFF，TC，△t，Tm
TC :It is the abbreviation of correction temperature, refers to the
change
of the resistance value according to the change of the temperature.
It
is the function of temperature compensation.
△t:It is the function of temperature conversion. According to the
measured
in cold resistance, and heating resistance and temperature
conversion
to the final measured temperature.
Tm : Only measure the temperature, and have no effect on any other
value.
OFF: Instrument does not do temperature test.
SENSOR ：OFF，Pt，AnLG IN
OFF : Instrument is not connected to any temperature sensor.
Pt : Platinum resistance, the instrument uses Pt.
AnLG IN: Analog input. Such as thermocouple type. Users can make their
own according to the following figure.
t0 and αt0(used in TC)
t0 ：Press the number key to input -10 to 99.9 and press OK key to
confirm.
Unit :℃.
αt0 ：Press the number key to input -999999 to 999999 and press OK key
to
confirm. Unit: ppm
Temperature compensation formula is as follows:

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 
00 0
( )
1
t t tt t
R R

    
: Measured value of resistance
t
R
: The resistance value of t0 is calculated by
0t
R
the correction of the resistance.
: Temperature to be corrected
0
t
: Ambient temperature of resistance
t
measurement
: Temperature coefficient of temperature t0
0t

For example: if a copper measured measurement at 40 DEG C of the
resistance is 100 ohm. How much is it at 20 DEG C of the resistance?
（The temperature coefficient of the measured part is 3930ppm）
0
0 0
1 ( )
t
t
t
R
Rt t

  
6
100
1 (3930 10 ) (40 20)

   
92.71
Note：
Temperature refers to the temperature of the surrounding
environment,
rather than the surface temperature.
Ensure the adequate preheating of the instrument and temperature
probe
prior to testing. When measuring, the temperature probe should be close
to
the measured object as far as possible. To have enough time to stabilize
the
temperature of the surrounding environment.
The temperature coefficient of commonly used metals is also found
in the appendix.
R1 ,t1 ,k1(used in △t)
R1 ：Use digital key to input and press OK key to confirm.(0<R1<20MΩ)
t1 ：Press the number key to input -10 to 99.9 and press OK key to
confirm.
Unit :℃.
k1 ：Use digital key to input and press OK key to confirm.(-

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1000<k1<1000)
According to the IEC standard 60034, the change of temperature is
calculated by using the following formula.
2
1
1
( ) ( )
a
R
t k t k t
R
   A
: Temperature variation（℃）
tA
: Temperature measured at R1 value（℃，state of
1
t
cooling）
: Ambient temperature at the time of final
a
t
measurement
: Measured resistance value at temperature t1
1
R
: Measured resistance value at temperature
2
R
a
t
k : The reciprocal of the temperature coefficient of
conductive material at 0℃.
For example：When ， ， ,
120t℃
1200mR 
25
a
t℃
2210 mR 
,
the change of temperature is calculated as follows:
2
1
1
( ) ( )
a
R
t k t k t
R
   A
3
3
210 10 (235 20) (235 25)
200 10



    

7.75℃
So the current temperature of the resistance itself is :
25 7.75 32.75
R a
t t t    A℃
k can be translated according to the temperature coefficient of the
material being tested.
0
0
1
t
k t

 
For example: the temperature coefficient of soft copper wire is
3930ppm at 20℃.
6
120 234.5
3930 10
k   


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According to the formula calculated by the k is very close to the
value 235 of the IEC standard in the definition of copper.
V1, T1, V2, T2(For analog input)
V1、V2：The value of 0~2 in the digital key input（Unit: V）
T1、T2：The value of -99.9~999.9 in the digital key input（Unit:
℃）
The temperature can be calculated by the electric potential of the
thermocouple based on the linear relationship of the figure above.
3.6 <SYSTEM SETUP>
This page can be set as follows:
Theme ：TRAD BLUE、TRAD BLACK
Language ：English 、中文（Chinese）
Key Tone ：ON, OFF
PassTone ：OFF, LONG, SHORT, TWO SHORT
FailTone ：OFF, LONG, SHORT, TWO SHORT
ParaSave ：AUTO SAVE, AUTO LOAD
PassWord ：OFF, LOCK SYSTEM, LOCK FILE, MODIFY, SAVE TO U_DISK
Date,Time ：INCR++, INCR+, DECR-, DECR-- . Use these four keys or numeric
keys
and OK key to set.
Note：
ParaSave :
There are two types of parameters in the save mode. AUTO SAVE is a
set of real time measurement parameters. The next boot state is the
same as the last time you shut down. AUTO LOAD is the most recent
loading of the internal file in the boot time.
PassWord：
OFF : Close this function.
LOCK SYSTEM ：Including file protection and boot password.

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LOCK FILE ：ONLY file protection.
MODIFY ：Modify password. Factory default password：2515、
2516
（Determined by instrument type）
SAVE TO U_DISK：Save the password to U disk. For example, the
password file named "2516.STA" (determined by the instrument
model). When the instrument operation need to enter the password,
put the U DISK with a password into the instrument USB interface,
the instrument will automatically detect the password file is
valid, so as to achieve the purpose of lifting the password.
3.7 <COMM SETUP>
This page can be set as follows:
Bus Mode ：RS232C、GPIB、USBTMC、USBCDC
BaudRate ：INCR+、DECR-（Can choose 4800,9600,19200,38400 or 115200）
Date Bit ：6、7、8
Stop Bit ：1、2
Parity ：None, Odd, Even
Tx Term ：LF(ASCII: 0x0A), CR(ASCII: 0x0D), LFCR
GpibAddr ：INCR++, INCR+, DECR-, DECR-- . Use these four keys or numeric
keys
and OK key to set.(Range: 0 ~ 31)
CMD Type ：SCPI 或2512。
Note：
Used in RS232C：BaudRate、Date Bit、Stop Bit、Parity
Used in GPIB ：GpibAddr
Tx Term：The end symbol used to return the data from computer.
 For more details, please contact the sales person or dealer.
3.8 <ABOUT>
This page shows the identity information of the instrument and some
system functions.
Instrument manufacturer
Model number (Instrument model)
Serial number
Firmware version
Hardware version
License
Manufacturer URL
The page's system functions are as follows:
Reset：Instrument system reset and restart.

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Factory：Instrument restart and return to the factory default
settings.
Update：To upgrade the instrument software by using U disk.
EXIT：Return to < SYSTEM SETUP > page.
3.9 <INTER Files List>、<EXT Files List>
The parameters set by the user in form of a file stored in the
instrument internal non-volatile memory, when the next time you want to
use the same settings, users do not need to set these parameters, only
need to load the appropriate file, the last set of parameters are
obtained. Thus greatly saving the time for the user to re set the
parameters and improving the production efficiency.
Press FILE button to enter the < INTER Files List > page. Press the
FILE key again to switch the internal / external file.
Operation procedure description:
A. Review existing files
1) By using the upper and lower keys, one by one look.
2) Use the left and right buttons, can look at the page.
3) Input file number keys corresponding to the serial number, then

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press the button [OK], can be directly read the required file.
B. Follow these steps to save the parameter to the file.
1) The number at the cursor to need to save the file, press
[STORE] softkey;
2) Select softkey [YES] into the next step, select the key [NO]
cancel the save operation;
3) If step 2) select [YES], use the numeric keys to enter the
file name and press [OK] to confirm. If the serial number is
already in the file, you can override the file or cancel the
operation according to the screen.
C. Follow these steps to load the parameters set in the corresponding
file.
1) Press the FILE key to switch to the file management page.
2) Move the cursor to the file location in the file list, or
direct input file serial number.
3) Press LOAD key.
4) Select softkey YES, loading the current file, and return to the
current page.
D. Follow the steps for copying files to E (U disk).
1) Insert the U disk into the instrument front panel USB
interface.
2) Move the cursor to the file, press the soft key "copy to E:"
3) According to the screen, press the soft key "YES" to copy.
4) If U disk file with the same file name, screen prompt the need
to cover, according to the soft key "YES" to continue copying,
press the soft key "NO", cancel the copy.
Chapter 4 performance
4.1 Accuracy
（1）Accuracy of R
Test environment requirements :18℃～28℃RH≤75% .
Test conditions: slow.
The accuracy of CKT2515A/B, CKT2516/A, see the following table:

Operation Manual for DC Resistance Tester
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The accuracy of the CKT2516B see the following table:
Note: range CKT2516 20mΩ~2MΩ
CKT2516A 200mΩ~200 kΩ
CKT2516B 20mΩ~20 kΩ
CKT2515A 20mΩ~20MΩ
CKT2515B 200mΩ~200 kΩ
Customizable 6 bit display, with a minimum resolution of 0.1μ Ω ,
Max 20 MΩ. Customizable cable length test
（2）The accuracy of temperature（Only CKT2515A/B）
The temperature sensor（The following performance is measured in
the instrument itself at 25 degrees. Using different PT1000 will
produce deviation, please use the temperature correlation to
improve accuracy in < CORR SETUP > page.）
Temperature range
-10.0～39.9
40.0～99.9
resolution ratio
0.1℃
0.1℃
Accuracy within 6
months
±0.30% rdg ±0.5℃
±0.30% rdg ±1.0℃
Accuracy within 1
years
±0.45% rdg ±0.8℃
±0.45% rdg ±1.5℃
The temperature sensor uses analog input