AccuMac AM8060 User manual

Rev. 202001V1
AM8060 Precision Thermometer
User’s Guide
Please download the latest version at www.accumac.com

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Table of Contents
Important Notice ---- Warning ....................................................................................... 2
1Introduction ............................................................................................................ 3
1.1 Main Application............................................................................................. 3
1.2 Main Features.................................................................................................. 3
2Specifications.......................................................................................................... 5
2.1 Specifications.................................................................................................. 5
2.2 Probe Types .................................................................................................... 5
3User Interface......................................................................................................... 6
4General Operations................................................................................................. 7
4.1 Connecting the probes ..................................................................................... 7
4.2 Instrument connection with AC power............................................................. 7
4.3 Instrument front panel display and touchpad.................................................... 7
4.4 Selecting Units ................................................................................................ 9
4.5 Selecting Sensors/Probes and Adjusting Parameters ........................................ 9
5Instrument Calibration And Accuracy Adjustments ............................................... 16
5.1 100 Ω calibration........................................................................................... 17
5.2 25 Ω calibration............................................................................................. 19
5.3 Reset the measurement/calibration switch after calibration .......................... 21
6Wireless Data Acquisition..................................................................................... 22
7Using a Flash Drive （ U disk ） for Data Acquisition............................................. 28
8Using the USB Interface for Data Acquisition....................................................... 33
9Appendix: Installation of USB Driver.................................................................... 36
Please read the “ Important Notice”
information on the next page before
turning on the instrument!

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Important Notice ---- Warning
Check the position of the “Measurement/Calibration Switch”
on the rear panel before turning on the device. Please refer
to Figure 2. The switch must be at the measurement (left)
position. Loss of calibration data will occur if the switch is at
the calibration (CAL) position when the instrument is used
in measurement application.
The instrument is calibrated before shipment. Only qualified
calibration agencies with proper standard resistors should
perform the calibrations of this device. Please refer to
5. Instrument Calibration And Accuracy Adjustments

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1 Introduction
The AM8060 precision thermometer is a dual-channel PRT readout. It
can be used either as a temperature measurement device or a
temperature reference standard. It is capable of working together with
various types of platinum resistance thermometers (PRTs) and can
measure temperatures from two probes simultaneously. The measured
temperature is calculated by the embedded microcontroller by
following ITS-90 standard. The device has a strong data acquisitions
capability by using a wireless module (optional), an USB connection
to PC or a flash drive interface that can do ‘plug-and-record’. With
these flexible peripherals, temperature data can be easily captured and
saved in real time.
1.1 Main Application
Temperature measurement with standard platinum resistance
thermometers (SPRTs), secondary platinum resistance
thermometers (Secondary PRTs) and precision industrial
platinum resistance thermometers (IPRTs).
PRT calibrations or comparisons.
Temperature reference for dry-wells or temperature baths.
1.2 Main Features
High accuracy: 0.008 ºC at 0 ºC
High resolution，0.001 ºC
Concurrent two PRTs measurements and data capturing.
Display of two PRTs temperature in Celsius ºC，ºF, resistance
Ωand temperature difference.
2.7”OLED display.
Touchpad for function control.
Flexible probe/sensor parameter adjustments and settings.
USB interface for transmitting and saving real time temperature
data.

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Wireless real time temperature data capturing with optional
external wireless module (optional).
Real time temperature data capturing and saving to flash drive.

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2 Specifications
2.1 Specifications
Temperature range：-200 ºC ~ 850 ºC
Resolution：0.001 ºC
Accuracy：
25ΩSPRT/IPRT
100ΩSPRT/IPRT
±0.01 ºC @ -196 ºC
±0.010 ºC @ -200 ºC
±0.008 ºC @ 0 ºC
±0.008 ºC @ 0 ºC
±0.009 ºC @ 232 ºC
±0.009 ºC @ 232 ºC
±0.015 ºC @ 420 ºC
±0.015 ºC @ 420 ºC
±0.025 ºC @ 660 ºC
±0.020 ºC @ 660 ºC
±0.025 ºC @ 850 ºC
Short term stability：
o±0.001 ºC（with 100Ωplatinum probe）
o±0.003 ºC（with 25Ωplatinum probe）
Working environment：15ºC ~ 35 ºC
Power supply：AC 100V ~ 240V
Power consumption：< 15 W
Dimensions ：180 mm x 65 mm x 200 mm
Weight ：0.7 lbs (300 g)
2.2 Probe Types
SPRT or PRT with temperature coefficient α=0.003925
(WGa≥1.11807).
IPRT with temperature coefficient α=0.00385.

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3 User Interface
Front Panel：
Display Main Menu U Drive recording
Start/Stop button
Left key Value Adj Right/Return Key
Figure 1: Front Panel
Rear Panel：
U Drive Interface Probe 1(S1) terminals
AC Power Inlet/Switch USB Measurement Probe 2(S2) terminals
/Calibration Switch
Figure 2：Rear Panel
Warning: unless calibration is needed,
do NOT put the switch on ‘Cal’ position.

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4 General Operations
The AM8060 precision thermometer is a dual-channel temperature
readout. It can measure temperature of two probes concurrently. It can
also be used with just one probe for single channel temperature
measurement.
4.1 Connecting the probes
The AM8060 can work with one or two probes for temperature
measurement. Figure 3 shows the rear panel of the AM8060.
Probe 1 can be connected to terminals marked with S1, and Probe
2 to S2.
Figure 3: Rear Panel and Probe Terminals
4.2 Instrument connection with AC power
AM8060 operation requires power of AC100V~240V.
4.3 Instrument front panel display and touchpad
After the power is turned on and the probes are connected, the
device should show initialization information, including the
instrument interface status, measured temperatures of the
Set to CAL when doing
Calibration.
Probe Connections
Pair
Pair

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probe/probes and temperature difference. This information is
shown in 4 lines, as seen below:
Line 1 is the instrument interface status, including USB flash drive,
wireless communication status and USB to computer interface
status. If the “Udr”is shown in Line 1, a USB flash drive is
connected to the USB host interface; if “ZB-xx (where “xx” are
numbers) displays on Line 1 as shown above, it means the Zigbee
wireless data capturing is working; if the display shows“USB”on
Line 1, then AM8060 is connected via its USB client interface.
Line 2, which is indicated with ‘t1’, shows the measured
temperature of Probe 1 (S1). The“SPRT”at the end of the Line 2
tells the type of probe of Probe 1 (S1). The AM8060 supports two
types of probes. “SPRT” indicates a 25Ωor 100 Ωstandard
platinum resistance thermometers. “IPRT” indicates a 100Ω
industrial platinum resistance thermometer. The “C” shown at the
end of Line 2 indicates that the temperature is in Celsius.
Line 3, which is indicated with ‘t2’, shows the measured
temperature of Probe 2 (S2).
A “>” will toggle in front of “t1”or ”t2”to indicate which probe is
being measured. Each toggling instance is one measurement.
-4.525
+529.474
-533.98
Line 1
Line 2
Line 3
Line 4
Udr ZB xx USB
>t1 SPRT
C
t2 SPRT
C
t1 t2
C

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Line 4, which is indicated with “t1-t2”, shows the temperature
difference of the two probes.
4.4 Selecting Units
Users can select to display ºC, ºF or Ωby scrolling touch keys up or
down ( or )
4.5 Selecting Sensors/Probes and Adjusting Parameters
4.5.1 Probe Types
AM8060 can work with different types of PRTs. Users can
choose probe types and input the parameters of the probes.
The menu key
MENU
and return/right shift key can be used for
probe selections and parameter adjustments.
The probes compatible with AM8060 are:
25 Ωor 100 ΩSPRTs, or
25 Ωor 100 ΩSecondary PRTs, or
100 ΩIPRTs.
The temperature coefficient of these probes can either be
0.00385 Ω/Ω/°C or 0.003925 Ω/Ω/°C.
The probe types working with AM8060 are classified and
displayed as IPRT and SPRT：
If the probe is an industrial or precision platinum resistance
thermometer probe with a temperature coefficient of 0.00385
Ω/Ω/°C, AM8060 will categorize the probe as “IPRT”.
AM8060 calculates temperature according to CVD (IEC751)
equation.

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If the probe is a precision platinum resistance thermometer
probe or secondary PRT with temperature coefficient of
0.003925 Ω/Ω/°C (WGa>=1.11807), AM8060 will categorize
the probe as “SPRT”. AM8060 calculates temperature
according to ITS-90 standard platinum resistance
thermometer equations.
If the probe is a standard platinum resistance thermometer,
the probe will be displayed as “SPRT”. AM8060 calculates
temperature according to ITS-90 standard platinum
resistance thermometer equations.
4.5.2 Selecting Sensors/Probe and Parameters Input
4.5.2.1 To select the type of sensor, press
MENU
key and then
hold key. After 3 seconds, AM8060 will display the
parameter adjustment main menu:
* MAIN MENU *
> Sensor1 Setting
Sensor2 Setting
Wireless Setting
---------------------------------------------
MENU=Quit ENTER=Yes
U-Drive Setting
There are four options for parameter adjustments:
Sensor 1 Setting. This is for Sensor 1 (S1) parameter
adjustment. Users can select the Sensor 1 type and do
parameter adjustment.
Sensor 2 Setting. This is for Sensor 2 (S2) parameter
adjustment. Users can select the Sensor 2 type and do
parameter adjustment.

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U-Drive Setting. Users can select this to change settings for
saving data to an external drive.
Wireless Setting. Users can select this to change the settings
for wireless communication.
Although only “Sensor 1 Setting” is illustrated below, the
procedure of Sensor 1 and Sensor 2 adjustments are identical.
4.5.2.2 Press or key to move the selection line with the
“>” symbol to “Sensor 1 Setting”. Press key to enter the
Sensor 1 setting adjustment program as shown below. The
probe type can either be “IPRT” or “SPRT”. Users can
select either one by moving the “>” to the sensor type, and
then press key. Users can exit this selection by pressing
MENU
key. The figure below shows that SPRT is selected.
[SENSOR 1 SETTING]
IPRT
---------------------------------------------
MENU=Exit ENTER=Yes
SENSOR 1 = SPRT
>SPRT
4.5.2.3 Press key to go to the parameter adjustment menu:
[SENSOR 1 SPRT]
SET a
---------------------------------------------
MENU=Exit ENTER=Adj
>SET Rtp
SET b
SET c
SET a4
SET b4

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4.5.2.4 If the sensor type is SPRT, the adjustable parameters
are Rtp, a, b, c, a4 and b4. The details of these parameter
definitions can be found from the ITS-90.
As an example, calibration agencies provide following
parameters after SPRT is calibrated:
Rtp: probe’s resistance at triple point of water.
a4 and b4：low temperature range parameters.
a, b and c：high temperature range parameters (b and c can be
“0” for some instances. (Please refer to ITS-90 for more
information.)
If the sensor type is IPRT, the adjustable parameters are R0, A,
B and C:
[SENSOR 1 IPRT]
SET A
---------------------------------------------
MENU=Exit ENTER=Adj
>SET R0
SET B
SET C
The details of the parameter definitions can be found from the
industrial platinum resistance thermometer calibration
procedure.
As an example, calibration agencies provide following
parameters after IPRT is calibrated:
R0: the probe’s resistance at 0°C.
A and B: the temperature coefficients at temperature range
above 0°C.
C: the temperature coefficient at the temperature range below
0°C.

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4.5.2.5 The
MENU
， ， ， and keys can be used
together to adjust these parameters. The parameters can
also be saved into the instrument. The following is the
procedure of adjusting and saving the parameters of Rtp
and a4 for an SPRT type probe. The other parameter
adjustments follow the same process.
4.5.2.6 To adjust Rtp (continuing from step 4.5.2.4) press
or key to move the cursor to “>SET Rtp”, and then
press key to go into the Rtp adjustment program.
[SENSOR 1 SPRT]
MENU=Exit <^v> = Adj
Rtp = OHM
25.5260
The instrument will display the current Rtp value. The digit
underlined with the blinking bar indicates the adjustable
position. Users can use and keys to move this
position and use and keys to adjust the value.
4.5.2.7 After the Rtp is adjusted, press
MENU
key, the display will
remind user to save the adjusted value by flashing the
adjusted Rtp on screen. Press key to save the value or
press
MENU
key to exit the program without saving and go
back to the parameter adjustment menu.
4.5.2.8 The following is a4 adjustment procedure (Continuing
from step 4.5.2.4). Pressing and keys to move the

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cursor to “>SET a4”, and then press key to go into the
a4 adjustment program, as seen below:
[SENSOR 1 SPRT]
SET a4=0
---------------------------------------------
MENU=Exit ENTER=Yes
a4= - 4.129934e-05
>ADJUST a4
The second line (a4 = -4.129934e-05) displays the current a4
value, while the next two lines show the adjustment selections.
The a4 adjustment is different from Rtp, as the value of a4 can
be “0”. If a4 is “0”, the user can move the cursor by using
and keys to “SET A4=0” line and press the key to
confirm the selection. If a4 is a value other than “0”, the user
can move the cursor to “ADJUST a4” line and then press
key to go into the a4 adjustment program.
[SENSOR 1 SPRT]
SET a4=
---------------------------------------------
- 4.129934e-05
MENU=Exit <^v> = Adj
4.5.2.9 The current a4 value will be displayed. To adjust this
value, press or key to move the cursor to the position
where the value will be adjusted and then adjust it with
or key.

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4.5.2.10 After adjustment, users can choose to save or quit by
pressing the
MENU
key. The a4 line will be flashing to remind
the user that a change has been made. To save the changes,
press key; otherwise, press
MENU
key and the program
will go back to the previous screen.
4.5.2.11 Other parameter adjustments are similar to the above
Rtp and a4 adjustment.
4.5.2.12 After all of the desired adjustments are made, users can
go back to the main menu by pressing
MENU
key multiple
times until the AM8060 goes back to the main screen.

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5 Instrument Calibrations and Accuracy
Adjustments
AM8060 is designed for temperature measurements by measuring a
probe’s resistance and converting it into temperature. Consequently,
the resistance measurement is very critical, and the instrument must be
calibrated correctly. Every AM8060 is calibrated before shipment.
AM8060 needs regular calibration performed by qualified
professionals. A one year calibration interval is recommended.
Users can calibrate AM8060 using standard resistors with calibrated
values.
Warning: It is required to set correct R0 (or Rtpw) values in Sensor 1
(S1) before calibrations. To calibrate AM8060 in the range from 10 Ω
to 50 Ω, R0 (or Rtpw) needs to be set to 25 Ω. To calibrate AM8060 in
the range from 50 Ω to 375 Ω, R0 (or Rtpw) needs to be set to 100 Ω.
In the event of AM8060 being out of tolerance, its accuracy can be
adjusted by re-calibrations. Standard resistors of 25 Ω and 100 Ω are
needed for AM8060 calibrations.
The calibration should be done in an environment with room
temperature of 22 ± 2°C.
Instrument calibration procedure: (No special sequence
for 100 Ωand 25 Ωcalibration)

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5.1 100 Ω calibration
5.1.1 Turn off the power, put the measurement/calibration switch to
the “CAL”side (right side). Please see Figure 3 for details.
5.1.2 After turning on the power，AM8060 shows the calibration
main menu. It can be seen that there are two calibrations
required: 100 Ohm CALIBRATION and 25 Ohm
CALIBRATION.
The following is an illustration of 100 Ohm CALIBRATION.
* CALIBRATION MENU *
> 100 Ohm CALIBRATION
25 Ohm CALIBRATION
Enter = Yes
-------------------------------------------
5.1.3 Use or key on the keypad to select the calibration. A “>”
sign will be displayed in front of the selected line. For example,
the above figure shows that 100 Ohm CALIBRATION has been
selected. Pressing the key will start the calibration program,
and the following display will appear：
* 100 Ohm CALIBRATION
Connect a 100 Ohm
Standard Resistor
and Press Enter
Menu= Exit Enter = Yes
-------------------------------------------

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5.1.4 The instrument will show the phrase “Connect a 100 Ohm
Standard Resistor and Press Enter”to indicate that a 100Ω
standard resistor must be connected to sensor1 (S1) terminals as
Figure3. Users can exit the calibration by pressing
MENU
key to go
back to the main menu (*CALIBRATION MENU*).
5.1.5 After the probe is correctly connected, press key to start the
calibration. The instrument will display “Waiting…” while the
resistance is calibrated. When the process is finished, the screen
will display the result as seen below:
* 100 Ohm CALIBRATION
100.0238
Rt = 111.0000 OHM
Menu= Exit <^v>=Adj
100R Rs = OHM
5.1.6 To calibrate the instrument, users must adjust the value
(100.0238 as shown above) to match the standard resistor’s
resistance. For example, if the resistance of the standard resistor
is 100.0038 ohm, users can move the underline cursor to the
desired position using and keys, and users can adjust the
value by using and keys. The adjusted result will appear
like the picture below:
* 100 Ohm CALIBRATION
100.0038
Rt = 100.0038 OHM
Menu= Exit <^v>=Adj
100R Rs = OHM

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5.1.7 It is required to wait for 10 seconds for the data to be stable.
Each second is shown with a blinking dot at the top left hand
corner of the display. Once this is completed, the next step
involves saving the calibrated data. To save the data, press the
MENU
key and the third line of data will blink to indicate the
option to save.
5.1.8 To save this calibration value, press and hold the key and
then press the key. This will store the calibration data to the
instrument, and the program will go back to the main menu
(*CALIBRATION MENU*). If users DO NOT want to save the
data, press the
MENU
key and bring the program back to main
menu ( *CALIBRATION MENU*).
5.2 25 Ω calibration
5.2.1 The process of 25 Ωcalibrations is similar to that of 100 Ω
calibrations. First, turn off the power of the instrument and
ensure the measurement/calibration switch at the rear panel is
moved to the “CAL” side (right side), as shown in Figure 3.
5.2.2 Choose the 25 Ohm CALIBRATION under main menu
(*CALIBRATION MENU*) by touching or key to move
the “>” to the “25 Ohm CALIBRATION” line：
* CALIBRATION MENU
100 Ohm CALIBRATION
> 25 Ohm CALIBRATION
Enter = Yes
-------------------------------------------