ASTM C1064 Temperature Measuring Device

#1
First post here so let me know if I'm doing something wrong.

tl/dr: Anyone know where to get inexpensive thermometers, with 17025 cert, that comply with the requirements of ASTM C1064 for the measuring device?

We have been using cheap dial thermometer that are adjustable and we are unable to verify them at two temperatures 15 degrees C apart to be within 1 F of the reference thermometer. We were told by our calibration company that other companies just buy new ones every year that come with a cert (in our case we would want 17025). We looked into this option and the devices cost around $55, compared to the $6 ones we have been getting. Since we have many inspectors that perform this work, this increase is somewhat prohibitive, so we are looking into trying to get higher quality thermometers and verifying ourselves per ASTM C1064.

The ASTM states that the device has to be capable of accurately measuring the temperature within 1 F throughout the 0 to 50 C range. The 17025 certs that come with the device of interest show a 0.2 C error at 0 and 50 C, with a combined uncertainty of 0.58 C at both values. The stated accuracy is +/- 1 C. I would like to make the argument that the calibration cert demonstrates the capability of the device to measure accurately measure within +/- 1 F between 0 and 50 C, based on error of only 0.2 C at the points of interest. This argument is made more strong due to the method by which accuracy is demonstrated per the ASTM is based on getting values that differ from the reference thermometer (0.5 F accuracy) by no more than 1 F at either test point 15 C or more apart.
 
Elsmar Forum Sponsor

dwperron

Trusted Information Resource
#2
First post here so let me know if I'm doing something wrong.

tl/dr: Anyone know where to get inexpensive thermometers, with 17025 cert, that comply with the requirements of ASTM C1064 for the measuring device?

We have been using cheap dial thermometer that are adjustable and we are unable to verify them at two temperatures 15 degrees C apart to be within 1 F of the reference thermometer. We were told by our calibration company that other companies just buy new ones every year that come with a cert (in our case we would want 17025). We looked into this option and the devices cost around $55, compared to the $6 ones we have been getting. Since we have many inspectors that perform this work, this increase is somewhat prohibitive, so we are looking into trying to get higher quality thermometers and verifying ourselves per ASTM C1064.

The ASTM states that the device has to be capable of accurately measuring the temperature within 1 F throughout the 0 to 50 C range. The 17025 certs that come with the device of interest show a 0.2 C error at 0 and 50 C, with a combined uncertainty of 0.58 C at both values. The stated accuracy is +/- 1 C. I would like to make the argument that the calibration cert demonstrates the capability of the device to measure accurately measure within +/- 1 F between 0 and 50 C, based on error of only 0.2 C at the points of interest. This argument is made more strong due to the method by which accuracy is demonstrated per the ASTM is based on getting values that differ from the reference thermometer (0.5 F accuracy) by no more than 1 F at either test point 15 C or more apart.

One thing that your calibration company failed to mention is that when you simply replace your thermometer with a new one you have lost measurement traceability. Consider that your thermometer went out of tolerance since it was calibrated and then you just throw it away and replace it. Then you will never know that your measurements were out of tolerance. For 17025, and for any case where knowing whether or not your instrument is in tolerance is important, then you must calibrate it at end of life to check its accuracy.
 

Brenda

Starting to get Involved
#3
Indeed always perform an end of life calibration.

for the bussiness case:
buy stable thermometers
Always apply the error corrections
Set up a drift calculation to check for the stability
 
Thread starter Similar threads Forum Replies Date
N Database that lists labs accredited to ASTM / ANSI standards Various Other Specifications, Standards, and related Requirements 5
E ASTM F2118 - Fatigue testing of bone cement - Changes between the 2003 and the 2014? Other Medical Device Related Standards 1
B ASTM E18-2020 - Rockwell testing standard changes? General Measurement Device and Calibration Topics 2
H Difference between Stainless Steel 316 ASTM F899 and ASTM A276 Other Medical Device Related Standards 3
P What ASTM std is EC 93/42 MDD EQUIVALENT TO CE Marking (Conformité Européene) / CB Scheme 1
W ASTM F1929 dye penetration test - Validation for in-house testing ISO 13485:2016 - Medical Device Quality Management Systems 13
K Troubleshooting Salt Spray (ASTM B117) Manufacturing and Related Processes 2
P Average Peel Strength - Interpretation of BS EN 868-5:2018 and ASTM F0088/F0088M Other Medical Device Related Standards 2
B ASTM F2924-14 /ASTM F3001 - Room temperature classification criteria Other US Medical Device Regulations 0
M Package Integrity Test ASTM F 2096 or ASTM 1929 Quality Assurance and Compliance Software Tools and Solutions 1
M Aluminum - What is the difference between 6061-T6 and 6061-T651 (both per ASTM B211)? Manufacturing and Related Processes 4
M Accelerated Ageing Test for Orthopedic Implants -- ASTM F 1980 or ISO 11607 or both are applicable ? Other Medical Device and Orthopedic Related Topics 2
B Stability testing of medical devices as per ASTM F1980-16 CE Marking (Conformité Européene) / CB Scheme 0
M ASTM A6 Material Standard - Section Nominal Sizes Manufacturing and Related Processes 1
M Real-time-aging Validation - ISO / ASTM Standard - Class 111 Orthopedic Implant Other Medical Device and Orthopedic Related Topics 1
D Non ASTM Partial Immersion LGT emergent stem correction General Measurement Device and Calibration Topics 3
2 ASTM or ISO Specifications on Prints Other US Medical Device Regulations 2
M ASTM F 75-12 - Tensile properties Product castings ( 7.1 ) vs Casting alloys ( 7.2) Other ISO and International Standards and European Regulations 1
X Heat Treat - Verifying mechanical properties on heat treated material per the ASTM Manufacturing and Related Processes 6
M ISO / ASTM standards for Sampling Plans for Medical Devices Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
M Are ASTM F745 & ASTM F75 still valid? EU Medical Device Regulations 5
Q M-282 - Engineering Standard for Tolerances - Is it ASTM, DIN? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 4
Q Correlation between ASTM & China's GB (Guobiao) / YY Standards China Medical Device Regulations 4
Ron Rompen Water Immersion Testing ASTM D870 Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
E ASTM D3951 Part Marking Requirements AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 1
M ASTM Stainless Steel Density Table Various Other Specifications, Standards, and related Requirements 1
S ASTM-D4000 & FORD "ZW" Call-Outs Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
S ASTM-1965-98 (Reapproved 2009) has contradictory requirements? Other Medical Device Related Standards 2
P ASTM-F2096 Medical Package Testing Various Other Specifications, Standards, and related Requirements 1
T ISO 2409 / ASTM D3359 Paint Adhesion Other ISO and International Standards and European Regulations 8
T ISO/BS/DIN/EN/ASTM - Standards Equivalencies Other ISO and International Standards and European Regulations 3
Q ASTM Specification Revision Changes AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 2
A Coke Reactivity Index (CRI) Testing Code Interpretation: ASTM D5341-99 (2004) Various Other Specifications, Standards, and related Requirements 2
P ASTM Standard, Stainless Steel angle that has been rejected because it is not ?square Manufacturing and Related Processes 2
N Protein content limit in condom according to ASTM standard Other ISO and International Standards and European Regulations 3
SteveK Magnetic Resonance ? Testing to ASTM F2503-08 Other Medical Device Related Standards 6
L Product numbers & sources for ASTM D3359 adhesive tape Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
R ASTM A967 Testing Interpretation - No Customer Requirements Manufacturing and Related Processes 3
E Withdrawal of ASTM F-745 07 CE Marking (Conformité Européene) / CB Scheme 5
J Salt Spray Failure Question (ASTM B 633 and B 117) Inspection, Prints (Drawings), Testing, Sampling and Related Topics 9
D ASTM E165 Liquid Penetrant Equivalent Other ISO and International Standards and European Regulations 6
S ASTM F2179-02 Glass Scratch Test Procedure Requirements Manufacturing and Related Processes 1
G Free ASTM Standards? Recent Court Ruling making their standards free? Various Other Specifications, Standards, and related Requirements 10
S ASTM Standard for Hardness Spec for 6063 T6 Aluminum Extrusions Various Other Specifications, Standards, and related Requirements 1
N FDA vs ASTM - Limitations of Powder Content in Gloves Other Medical Device Regulations World-Wide 3
S Followups to ASTM F2554-10? Surgical Navigation System Accuracy Other Medical Device Related Standards 1
J Galvanizing and ASTM A90 - Coating Weight Test Compliance Validation Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
D ASTM 684/A684M-10a Bend Test Method Manufacturing and Related Processes 2
M Requirements for Laboratories performing ASTM Tests Various Other Specifications, Standards, and related Requirements 4
V What are the Equivalent ISO standards for ASTM standards related to STEEL? Other ISO and International Standards and European Regulations 3

Similar threads

Top Bottom