Fluke 525A Service Manual

525A

®

Temperature/Pressure Calibrator

Service Manual

PN 1644492
March 2002

© 2002 Fluke Corporation. All rights reserved. Printed in USA
All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship under
normal use and service. The warranty period is one year and begins on the date of shipment.
Parts, product repairs, and services are warranted for 90 days. This warranty extends only to the
original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses,
disposable batteries, or to any product which, in Fluke’s opinion, has been misused, altered,
neglected, contaminated, or damaged by accident or abnormal conditions of operation or
handling. Fluke warrants that software will operate substantially in accordance with its functional
specifications for 90 days and that it has been properly recorded on non-defective media. Fluke
does not warrant that software will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user
customers only but have no authority to extend a greater or different warranty on behalf of Fluke.
Warranty support is available only if product is purchased through a Fluke authorized sales outlet
or Buyer has paid the applicable international price. Fluke reserves the right to invoice Buyer for
importation costs of repair/replacement parts when product purchased in one country is submitted
for repair in another country.

Fluke’s warranty obligation is limited, at Fluke’s option, to refund of the purchase price, free of
charge repair, or replacement of a defective product which is returned to a Fluke authorized
service center within the warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the
difficulty, postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in
transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid
(FOB Destination). If Fluke determines that failure was caused by neglect, misuse, contamination,
alteration, accident, or abnormal condition of operation or handling, including overvoltage failures

caused by use outside the product’s specified rating, or normal wear and tear of mechanical
components, Fluke will provide an estimate of repair costs and obtain authorization before
commencing the work. Following repair, the product will be returned to the Buyer transportation
prepaid and the Buyer will be billed for the repair and return transportation charges (FOB
Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY
IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
FLUKE SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, ARISING FROM
ANY CAUSE OR THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or
exclusion or limitation of incidental or consequential damages, the limitations and exclusions of
this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or
unenforceable by a court or other decision-maker of competent jurisdiction, such holding will not
affect the validity or enforceability of any other provision.

Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.

11/99

Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands

To register your product online, visit register.fluke.com

Table of Contents

Title Page

Introduction....................................................................................................... 1

Contacting Fluke ............................................................................................... 1

Safety Information............................................................................................. 1

Calibrator Specifications ................................................................................... 3

General Specifications .................................................................................. 3

DC Voltage Specifications, Output............................................................... 4

DC Current Specifications, Output............................................................... 4

Resistance Specifications, Output................................................................. 5

Resistance Specifications, Input.................................................................... 5

Thermocouple Specification, Output and Input............................................ 6

TC mV Specifications, Input and Output...................................................... 7

RTD and Thermistor Specification, Output.................................................. 8

RTD and Thermistor Specification, Input..................................................... 9

Pressure Measurement .................................................................................. 11

Theory of Operation.......................................................................................... 11

Micro-Controller Section.............................................................................. 11

Analog Section.............................................................................................. 12

Basic Maintenance............................................................................................. 12

Cleaning the Calibrator................................................................................. 12

Replacing a Line Fuse................................................................................... 12

To Check or Replace a Fuse.......................................................................... 13

Changing Line Voltage................................................................................. 13

Modular-Level Maintenance............................................................................. 14

Disassembly.................................................................................................. 15

Reassembly ................................................................................................... 15

Output Block Subassembly Connections.................................................. 17

Keypad to Main PCB................................................................................ 19

Display Assembly to Main PCB............................................................... 19

Opto RS232 to Main PCA........................................................................ 20

Reinstalling the Circuit Boards................................................................. 21

Connecting the Power Module ................................................................. 21

Final Assembly and Inspection..................................................................... 22

Performance Tests............................................................................................. 23

Required Equipment List.............................................................................. 23

Testing DC Voltage....................................................................................... 24

i

525A

Service Manual

Testing DC Current....................................................................................... 25

Testing Thermocouple Output...................................................................... 26

Testing CJC (Cold Junction Compensation)............................................. 27

CJC (Cold Junction Compensation) Calibration....................................... 27

Testing Thermocouple Input......................................................................... 28

Testing Ohms Output.................................................................................... 29

Testing Ohms Input....................................................................................... 30

Testing Pressure Modules............................................................................. 32

Calibration Adjustment ..................................................................................... 32

Initiating Communication............................................................................. 32

Starting Adjustment Mode............................................................................ 32

Adjustment Sequence.................................................................................... 33

14: Calibrate DAC, Digital to Analog Converter Adjustment.................. 34

1: 100 mV Source to 4: 100 V Source, Adjusting DC Source.................. 34

5: 100 mA Source, Adjusting DC Current Source.................................... 35

6: Hi Ohms Source, Adjusting High Resistance Source........................... 37

7: Low Ohms, Adjusting Low Ohms Source............................................ 38

8: Hi Ohms, Adjusting High Resistance Measure.................................... 38

9: Low Ohms, Adjusting Low Resistance Measure.................................. 40

10: SPRT 25, Adjusting SPRT Low Resistance Measure ........................ 41

11: TC SOURCE, Adjusting TC mVolt Source....................................... 43

12: TC Read, Adjusting TC mVolt Measure............................................ 43

Customer Replaceable Parts.............................................................................. 45

ii

List of Tables

Table Title Page

1. Symbols Used on the Calibrator............................................................................ 2

2. Replacement Fuses ................................................................................................ 13

3. Front Panel Wire Color Assignments.................................................................... 16

4. Rear Panel Wire Color Assignments ..................................................................... 16

5. Output Block to Main PCA Connections............................................................... 17

6. TC PCA to Main PCA Connections...................................................................... 18

7. Opto RS232 to Main PCA Connections................................................................ 20

8. Power Module to Main PCA Connections............................................................. 21

9. Power Connections................................................................................................ 22

10. Required Equipment.............................................................................................. 23

11. Testing DC Voltage............................................................................................... 24

13. TC Temperatures ................................................................................................... 26

14. Ohms Output Ranges............................................................................................. 29

15. Ohms Ratio Table.................................................................................................. 31

16. Calibration Dependencies...................................................................................... 33

17. List of Equipment for Voltage Calibration Adjustments....................................... 34

18. List of Equipment for Current Calibration Adjustments ....................................... 35

19. List of Equipment for High Ohms Measure Calibration Adjustments .................. 38

20. List of Equipment for High Ohms Measure Calibration Adjustments .................. 40

21. List of Equipment for Low Ohms Measure Calibration Adjustments................... 41

22. List of Test Equipment for Adjusting TC Source.................................................. 43

23. List of Test Equipment for Adjusting TC Read..................................................... 43

24. List of Test Equipment for Adjusting TC CJC...................................................... 45

25. Replacement Parts.................................................................................................. 47

26. Accessories............................................................................................................ 48

iii

525A

Service Manual

iv

List of Figures

Figure Title Page

1. Accessing the Fuse................................................................................................. 14

2. Wiring Connections............................................................................................... 17

3. Solder Connections for the TC PCA...................................................................... 18

4. Keypad PCA Connections..................................................................................... 19

5. Connections for the Opto RS232 PCA.................................................................. 20

6. Power Module Connections................................................................................... 22

7. Measuring DC Current........................................................................................... 25

8. Testing TC Output................................................................................................. 26

9. Connections for CJC Calibration........................................................................... 27

10. Connections for Measuring TC Input.................................................................... 28

11. Connection for Measuring Resistance Output....................................................... 29

12. 1281 Connection Diagram..................................................................................... 30

13. Connection for Measuring Ohms........................................................................... 31

14. Exploded View of the 525A .................................................................................. 46

v

525A

Service Manual

vi

Introduction

This manual provides user-service information for the 525A Temperature/Pressure
Calibrator (hereafter referred to as "the Calibrator"). Details regarding verification of the
Calibrator’s functionality and calibration, basic maintenance, contacting Fluke service
centers, and important safety information are also contained within this manual.

Contacting Fluke

To contact Fluke, order accessories, or locate the nearest Fluke Service Center or
distributor, call:

• USA: 1-888-99-FLUKE (1-888-993-5853)

• Canada: 1-800-36-FLUKE (1-800-363-5853)

• Europe: [phone]

• Japan: [phone]

• Singapore: [phone]

• Anywhere in the world: [phone]

525A

Or, visit Fluke’s Web site at www.fluke.com.

Safety Information

The Calibrator complies with EN 61010, ANSI/ISA-S82.01-1994, and CAN/CSA-C22.2
No. 1010.1-92. Use the Calibrator only as specified in this manual, otherwise the
protection provided by the Calibrator may be impaired.

CAT II equipment is designed to protect against transients from energy-consuming
equipment supplied from a fixed installation, such as televisions, personal computers,
portable tools, and other household appliances.

A “WWarning” statement identifie s hazardous conditions and actions that could cause
bodily harm or death.

A “WCaution” statement identifies conditions and actions that could damage the
Calibrator or the equipment under test.

International symbols used on the Calibrator and in this manual are explained in Table 1.

1

525A

Service Manual

WWarning

To avoid possible electric shock or personal injury, follow these guidelines:

Use the Calibrator only as specified in this manual or the protection provided by the

•

Calibrator might be impaired.
Inspect the Calibrator before use. Do not use the Calibrator if it appears damaged.

•

Look for cracks or missing plastic. Pay particular attention to the insulation around
the connectors.

Have the Calibrator serviced only by qualified service personnel.

•

Do not apply more than the rated voltage between the terminals, as marked on the

•

Calibrator, or between any terminal and earth ground.
Always use the power cord and connector appropriate for the voltage and outlet of

•

the country or location in which you are working.
Never operate the Calibrator with the cover removed or the case open.

•

Never remove the cover or open the case of the Calibrator without first removing the

•

power source.
Use caution when working with voltages above 30 V ac rms, 42 V ac peak, or

•

60 V dc. These voltages pose a shock hazard.
Use only the replacement fuse(s) specified in this manual.

•

Use the proper terminals, function, and range for your measurements.

•

Do not operate the Calibrator around explosive gas, vapor, or dust.

•

• When servicing the Calibrator, use only specified replacement parts.

Table 1. Symbols Used on the Calibrator

AC (Alternating Current)
DC (Direct Current)

Pressure
Chassis protective ground

Important Information. Refer to the
manual.

Caution, risk of electric shock

Ω

Earth ground
Resistance

Conforms to European Union directives
Canadian Standards Association,

NRTL
International ON/OFF symbol.

2

Calibrator Specifications

General Specifications

Warm up time Twice the time since last warmed up, to a maximum of 30 minutes
Settling time Less than 5 seconds for all functions and ranges except as noted
Standard interface RS-232
Optional interface IEEE-488 (GPIB)
Temperature performance

Electromagnetic compatibility CE: Conforms to EN61326
Temperature coefficient Temperature coefficient for temperatures outside tcal ±5 °C is

Relative humidity

Altitude Operating 3,050 m (10,000 ft) maximum

Safety

Analog low isolation 20 V
Line power Line Voltage (selectable) 100 V/120 V or 220 V/240 V

Power consumption 15 VA maximum
Dimensions Height 13.3 cm (5.25 in) plus 1.5 cm (0.6 in) four feet on bottom

Weight (without options) 4 kg (9 lb)

Operating 0 °C to 50 °C
Calibration (tcal) 18 °C to 28 °C
Storage -20 °C to 70 °C

10 % of the 90 day specification (or 1 year if applicable) per °C
Operating < 80 % to 30 °C, < 70 % to 40 °C, < 40 % to 50 °C

Storage < 95 % noncondensing

Nonoperating 12,200 m (40,000 ft) maximum
EN 61010 Second, ANSI/ISA-S82.01-1994,

CAN/CSA-C22.2 No. 1010.1-92, NRTL

Line Frequency 47 to 63 Hz
Line Voltage Variation ±10 % about line voltage setting

Width ¾ standard rack width

Depth 47.3 cm (18.6 in) overall

525A

Calibrator Specification s

3

525A

Service Manual

DC Voltage Specifications, Output

Absolute Uncertainty,

tcal ±5 °C

± (ppm of output +µV) Stability

Maximum

Burden

Ranges

1

90 days 1 year

± (ppm of output +µV)

Resolution

24 hours, ±1 °C

0 to 100.000 mV 25 3 30 3 5 +2 1 µV 10 mA
0 to 1.00000 V 25 20 30 20 4 +20 10 µV 10 mA
0 to 10.0000 V 25 200 30 200 4 +200 100 µV 10 mA
0 to 100.000 V 25 2 mV 30 2 mV 5 +1 mV 1 mV 1 mA

1. All outputs are positive only.

2. Remote sensing is not provided. Output resistance is < 1Ω.

Noise

Ranges

Bandwidth 0.1 to 10 Hz

(ppm of output +µV p-p)

Bandwidth10 Hz to 10 kHz

(µV rms)

0 to 100.000 mV 1 µV6 µV
0 to 1.00000 V 10 µV 60 µV
0 to 10.0000 V 100 µV 600 µV
0 to 100.000 V 10 ppm+1 mV 20 mV

2

DC Current Specifications, Output

Ranges

Absolute Uncertainty,

tcal ±5 °C

1

90 days 1 year

± (ppm of output +µA)

Resolution

Maximum

Compliance

Voltage

0 to 100.000 mA 85 2 100 2 1 µA 10 V 100 µH

1. All outputs are positive only.

Noise

Ranges

Bandwidth

0.1 to 10 Hz p-p

Bandwidth

10 Hz to 10 kHz rms

0 to 100.000 mA 2000 nA 20 µA

Maximum

Inductive

Load

4

Calibrator Specification s

Resistance Specifications, Output

Absolute Uncertainty,

tcal ±5 °C,

Ranges

1

5 to 400.00 Ω 0.025 0.03 0.01 Ω 1 to 10 mA
5 to 4.0000 kΩ 0.25 0.3 0.1 Ω 250 µA to 1 mA

1. Continuously variable from 0 to 4 kΩ.

±(ppm of output ± Ω)

Resolution Allowable Current

90 days 1 year

525A

2

2. For currents lower than shown, the floor adder increases by Floor

(new)

= Floor

(old)

x I

min/Iactual

For example, a 500 µA stimulus measuring 100 Ω has a floor uncertainty of 0.025 Ω x 1 mA/500 µA =

0.05 Ω.

Resistance Specifications, Input

Absolute Uncertainty,

tcal ±5 °C, ±(ppm of output ± Ω)

Ranges

0 to 400.00 Ω 35 0.003 40 0.003 0.001 Ω 1 mA

401 to 4001.00 Ω 35 0.03 40 0.03 0.01 Ω 0.1 mA

90 days 1 year

Resolution Stimulus Current

.

5

525A

Service Manual

Thermocouple Specification, Output and Input

Range (°C)

TC Type

B 600 °C

C0 °C

E -250 °C

J -210 °C

K -200 °C

L -200 °C

N -200 °C

1. Does not include thermocouple wire error.

Minimum Maximum 90 days 1 year

800 °C
1000 °C
1550 °C

150 °C
650 °C
1000 °C
1800 °C

-100 °C

-25 °C
350 °C
650 °C

-100 °C

-30 °C
150 °C
760 °C

-100 °C

-25 °C
120 °C
1000 °C

-100 °C
800 °C

-100 °C

-25 °C
120 °C
410 °C

800 °C
1000 °C
1550 °C
1820 °C

150 °C
650 °C
1000 °C
1800 °C
2316 °C

-100 °C

-25 °C
350 °C
650 °C
1000 °C

-100 °C

-30 °C
150 °C
760 °C
1200 °C

-100 °C

-25 °C
120 °C
1000 °C
1372 °C

-100 °C
800 °C
900 °C

-100 °C

-25 °C
120 °C
410 °C
1300 °C

Absolute Uncertainty,

tcal ±5 °C, ±(°C)

Output/Input

0.42 °C

0.39 °C

0.40 °C

0.44 °C

0.25 °C

0.21 °C

0.23 °C

0.38 °C

0.63 °C

0.38 °C

0.16 °C

0.14 °C

0.14 °C

0.16 °C

0.20 °C

0.18 °C

0.14 °C

0.14 °C

0.18 °C

0.25 °C

0.19 °C

0.14 °C

0.19 °C

0.30 °C

0.37 °C

0.26 °C

0.17 °C

0.33 °C

0.20 °C

0.16 °C

0.14 °C

0.21 °C

1

0.46 °C

0.39 °C

0.40 °C

0.45 °C

0.30 °C

0.26 °C

0.31 °C

0.50 °C

0.84 °C

0.50 °C

0.18 °C

0.15 °C

0.16 °C

0.21 °C

0.27 °C

0.20 °C

0.16 °C

0.17 °C

0.23 °C

0.33 °C

0.22 °C

0.16 °C

0.26 °C

0.40 °C

0.37 °C

0.26 °C

0.17 °C

0.40 °C

0.24 °C

0.19 °C

0.18 °C

0.27 °C

6

Thermocouple Specification, Output and Input (continued)

525A

Calibrator Specification s

Range (°C)

TC Type

R0 °C

S0 °C

T -250 °C

U -200 °C

mV -10 to 75.000 mV

1. Does not include thermocouple wire error.

Minimum Maximum 90 days 1 year

250 °C
400 °C
1000 °C

250 °C
1000 °C
1400 °C

-150 °C
0 °C
120 °C

0 °C

250 °C
400 °C
1000 °C
1750 °C

250 °C
1000 °C
1400 °C
1750 °C

-150 °C
0 °C
120 °C
400 °C

0 °C
600 °C

Absolute Uncertainty,

tcal ±5 °C, ±(°C)

Output/Input

0.58 °C

0.34 °C

0.31 °C

0.30 °C

0.56 °C

0.36 °C

0.30 °C

0.35 °C

0.51 °C

0.18 °C

0.13 °C

0.12 °C

0.56 °C

0.27 °C

1

0.58 °C

0.35 °C

0.33 °C

0.40 °C

0.56 °C

0.36 °C

0.37 °C

0.46 °C

0.63 °C

0.24 °C

0.16 °C

0.14 °C

0.56 °C

0.27 °C

TC mV Specifications, Input and Output

Absolute Uncertainty,

tcal +/-5 °C

+/-( ppm of output + µV)

Range

(mV)

-10 to

75.000

90 Days 1 Year

25 + 3µV 30 + 3µV5 + 2µV1µV 10 Ohms

+/- ( ppm of output + µV) Resolution

Stability

24 Hours +/-1°C

Maximum

Burden

7

525A

Service Manual

RTD and Thermistor Specification, Output

RTD Type

Pt 385, 100 Ω -200 °C

Pt 3926, 100 Ω -200 °C

Pt 3916, 100 Ω -200 °C

Minimum Maximum 90 days 1 year

-80 °C
0 °C
100 °C
300 °C
400 °C
630 °C

-80 °C
0 °C
100 °C
300 °C
400 °C

-190 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C

Range (°C)

-80 °C
0 °C
100 °C
300 °C
400 °C
630 °C
800 °C

-80 °C
0 °C
100 °C
300 °C
400 °C
630 °C

-190 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C
630 °C

Absolute Uncertainty

tcal ±5 °C, ±(°C)

0.06 °C

0.08 °C

0.08 °C

0.07 °C

0.07 °C

0.08 °C

0.08 °C

0.06 °C

0.06 °C

0.06 °C

0.07 °C

0.07 °C

0.08 °C

0.06 °C

0.06 °C

0.06 °C

0.06 °C

0.07 °C

0.07 °C

0.07 °C

0.08 °C

0.08 °C

1

0.07 °C

0.10 °C

0.10 °C

0.09 °C

0.09 °C

0.09 °C

0.10 °C

0.07 °C

0.07 °C

0.08 °C

0.08 °C

0.09 °C

0.09 °C

0.07 °C

0.08 °C

0.08 °C

0.08 °C

0.08 °C

0.08 °C

0.09 °C

0.09 °C

0.09 °C

Pt 385, 200 Ω -200 °C

Pt 385, 500 Ω -200 °C

1. 2-wire output

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C
630 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C
630 °C

0.31 °C

0.32 °C

0.33 °C

0.33 °C

0.36 °C

0.36 °C

0.42 °C

0.42 °C

0.13 °C

0.13 °C

0.13 °C

0.14 °C

0.14 °C

0.15 °C

0.16 °C

0.16 °C

0.38 °C

0.38 °C

0.39 °C

0.39 °C

0.43 °C

0.43 °C

0.50 °C

0.50 °C

0.15 °C

0.15 °C

0.16 °C

0.17 °C

0.17 °C

0.18 °C

0.19 °C

0.19 °C

8

RTD and Thermistor Specification, Output (continued)

525A

Calibrator Specification s

Absolute Uncertainty

RTD Type

Minimum Maximum 90 days 1 year

Pt 385, 1000 Ω -200 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C

PtNi 385, 120 Ω
(Ni 120)

-80 °C
0 °C
100 °C

Cu 427, 10 Ω

2

-100 °C 260 °C 0.63 °C 0.75 °C

Range (°C)

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C
630 °C

0 °C
100 °C
260 °C

0.06 °C

0.06 °C

0.07 °C

0.07 °C

0.07 °C

0.07 °C

0.08 °C

0.08 °C

0.04 °C

0.04 °C

0.03 °C

tcal ±5 °C, ±(°C)

YSI 400 15 °C 50 °C 0.005 °C 0.007 °C

1. 2-wire output

2. Based on MINCO Application Aid No. 18.

RTD and Thermistor Specification, Input

Absolute Uncertainty,

RTD Type

Range (°C)

Minimum Maximum 90 days 1 year

tcal ±5 °C, ±(°C)

1

0.07 °C

0.08 °C

0.08 °C

0.08 °C

0.09 °C

0.09 °C

0.09 °C

0.09 °C

0.05 °C

0.04 °C

0.03 °C

1

Pt 385, 100 Ω -200 °C

-80 °C
0 °C
100 °C
300 °C
400 °C
630 °C

Pt 3926, 100 Ω -200 °C

-80 °C
0 °C
100 °C
300 °C
400 °C

Pt 3916, 100 Ω -200 °C

-190 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C

Pt 385, 200 Ω

-200 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C

-80 °C
0 °C
100 °C
300 °C
400 °C
630 °C
800 °C

-80 °C
0 °C
100 °C
300 °C
400 °C
630 °C

-190 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C
630 °C

-80 °C
0 °C
100 °C
260 °C
300 °C
400 °C
600 °C
630 °C

1. 4-wire mode. Uncertainties listed do not include probe uncertainties.

0.031 °C

0.018 °C

0.018 °C

0.027 °C

0.031 °C

0.042 °C

0.050 °C

0.031 °C

0.014 °C

0.018 °C

0.026 °C

0.031 °C

0.041 °C

0.026 °C

0.011 °C

0.014 °C

0.018 °C

0.025 °C

0.026 °C

0.031 °C

0.040 °C

0.042 °C

0.071 °C

0.075 °C

0.079 °C

0.082 °C

0.090 °C

0.093 °C

0.100 °C

0.101 °C

0.012 °C

0.020 °C

0.020 °C

0.030 °C

0.035 °C

0.047 °C

0.057 °C

0.031 °C

0.015 °C

0.019 °C

0.029 °C

0.034 °C

0.046 °C

0.028 °C

0.012 °C

0.015 °C

0.019 °C

0.028 °C

0.029 °C

0.034 °C

0.045 °C

0.047 °C

0.072 °C

0.076 °C

0.081 °C

0.085 °C

0.093 °C

0.097 °C

0.105 °C

0.106 °C

9