Fluke 724 Calibration help needed

N

neoth

#1
hi all,

i need to send my fluke 724(temperature calibrator) for calibration,but according to the calibration officer, he will be using thermocouple type J to perform the calibration.

as my usage is sourcing mode, type K and type T thermocouple, is it the same if he uses type J to help me do the calibration?

i have check with him again, and his reply was that this equipment fluke 5520A has a A/D converter, and it doesnt matter what type of thermocouple he use.

i have doubt on his answer, so i wish to seek clarifications here,

please help, tks
 
Elsmar Forum Sponsor
N

neoth

#2
Anyone able to comment on this, I really need help,

Please let me know if it's not clear enough.

Thanks all.
 
Last edited by a moderator:

BradM

Staff member
Admin
#3
Why can't he calibrate the type K and T inputs? I would think the calibration provider would have a multi-function calibrator, and could simulate whatever curve is necessary.

I would feel you don't need to simulate every curve that exists, as long as one of the curves has been verified, the mV and cold junction compensator have been verified.

In short, they need to provide the calibration you request.:)

Is this a competent lab you are sending this to? Are they qualified to calibrate the instrument you are interested in?
 
N

neoth

#5
hi all,

i am already gone thru the manual and the calibration is done base for type J thermocouple,

if it is done on a type J, is it the same for type K and T?
 

BradM

Staff member
Admin
#6
hi all,

i am already gone thru the manual and the calibration is done base for type J thermocouple,

if it is done on a type J, is it the same for type K and T?
As long as nothing has changed with the curves, the cold junction compensator is verified, and the millivolts is checked. Then, sourcing and reading thermocouple at one curve should be OK.

Personally, I would still have it checked using the curve you use most often. :agree1:
 
N

neoth

#7
As long as nothing has changed with the curves, the cold junction compensator is verified, and the millivolts is checked. Then, sourcing and reading thermocouple at one curve should be OK.

Personally, I would still have it checked using the curve you use most often. :agree1:
Hi BradM,

should i check using milliwolts or should i use a direct °C?

and is cold junction a must?

regards
 

Jerry Eldred

Forum Moderator
Super Moderator
#8
Sorry that I am so slow in replying lately. Still very busy at my work.

I just reviewed the procedure. The OEM procedure tests with type J. The main difference on such calibrators is typically accomplished through ROM data which provides the different coefficient curves for the differing thermocouple types. I don't see a problem with calibrating at J as opposed to other types on such a calibrator provided the OEM says it is the correct method. And Fluke is one of the best brand names for such instruments; so I would be comfortable with that.

Depending on how you use that function (to verify temp controllers with millivolt simulation or use with probes), if it improves your confidence, you could always make an ice bath as an additional confidence check for offsets.

If I wanted to be very particular about potentials for error, I would not be concerned about the curves. Those are permanently imbedded in ROM on the unit. The only issue I have occasionally seen over the years (and only once), on a Fluke 52 digital thermometer, there was for some reason an abnormal offset between the J and K that shouldn't have been there. They couldn't fix it, and eventually had to replace the unit. That is very rare though.

I also just reviewed the GIDEP procedure. The T.O. procedure does test on type J, K, T, E, R, and S. So that is SOME support for the need to check other types. It is not appropriate or acceptable to post any GIDEP details here. But if your calibration provider is a GIDEP participant (normally only in the U.S. doing business with the U.S. government), you could request he use the GIDEP procedure.

If I were being very cautious about it, I would feel fully comfortable if it were checked at zero degrees C for other thermocouple types, and would not expect there to be any issues with the coefficient curves for them, as performing that check on one thermocouple type verifies the coeffient DC gain.
 
S

step30044

#9
The unit will be calibrated across all thermocouple types if tested in J type only, BUT as the customer you have the right to request it be calibrated were it is normally used. I would not have a problem doing the additional testing.
 
Thread starter Similar threads Forum Replies Date
F Learning Uncertainty Budget for Novice - Fluke 5520A Measurement Uncertainty (MU) 1
P How to Calibrate a HP 3458A Digital Multimeter with Fluke 5080A calibrator General Measurement Device and Calibration Topics 1
W Banana jack for Fluke meters...? Calibration and Metrology Software and Hardware 11
N Thermcouple Wire Calibration with a Fluke 753 General Measurement Device and Calibration Topics 0
N Calibration Traceability - Fluke 753 dpc with thermocouple Calibrated by Fluke ISO 17025 related Discussions 4
W Connecting IndySoft MET/CAL Import Module to a Fluke MET/TEAM Calibration and Metrology Software and Hardware 1
I Verification or calibration Fluke 8508a with 5720a? TUR not 4:1? Measurement Uncertainty (MU) 1
N Understanding the absolute uncertainty specification for a Fluke 5500A Measurement Uncertainty (MU) 3
R Looking for calibration specification for Fluke 7250 pressure controller General Measurement Device and Calibration Topics 5
J Could Fluke thermometer be used in SAT test in accordance to AMS 2750 ? AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 7
S Calibrating Thermometer with Simulated Output Temperature from Fluke 5520A General Measurement Device and Calibration Topics 6
A Fluke Digital MultiMeter Calibration Traceability and Certificate General Measurement Device and Calibration Topics 11
R FLUKE 1653B Adjustment - Instructions or Service Manual wanted General Measurement Device and Calibration Topics 4
B Calculating BMC (best measurement capability) for Fluke 8508A and HP 3458A Measurement Uncertainty (MU) 5
T Failure Modes on Fluke products? General Measurement Device and Calibration Topics 10
G Calculate a BMC for Thermocouple and RTD function with a Fluke 5500A Measurement Uncertainty (MU) 4
H METCAL Software (from Fluke) used only to get the Electrical Calibration Data? General Measurement Device and Calibration Topics 8
B Gage R&R on Oscilloscopes, Fluke voltmeters, Voltage probes, etc. & the like Gage R&R (GR&R) and MSA (Measurement Systems Analysis) 0
J Calibration Procedure for a Wavetek 9100 using Fluke Met/Calibration software Coffee Break and Water Cooler Discussions 7
M Electrical calibration using Fluke 550 SC300 General Measurement Device and Calibration Topics 2
M Less expensive way to calibrate multimeters such as a "Fluke"? General Measurement Device and Calibration Topics 2
lanley liao Question regarding the calibration of monitoring and measure equipment. Oil and Gas Industry Standards and Regulations 0
N IATF Calibration Lean in Manufacturing and Service Industries 3
Q Do these certificates of calibration meet ISO 9001 requirements for traceability to NIST? ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 10
T Plug Gage Calibration Calibration and Metrology Software and Hardware 1
M Load Cell Calibration using a totalizer on a flow meter General Measurement Device and Calibration Topics 0
E Calibration Records needed ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 1
D Limited Range Calibration - 5000 lb Industrial floor scale General Measurement Device and Calibration Topics 3
D Calibration of Small Scales General Measurement Device and Calibration Topics 26
C How to Establish the Calibration & Measurement Capability (CMC)? ISO 17025 related Discussions 1
I IQOQ or just initial calibration required? General Measurement Device and Calibration Topics 3
B Calibration in real life ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 3
J Calibration cycle for monitoring & measuring tools used in medical device manufacturing General Measurement Device and Calibration Topics 5
A Is calibration of test weight required General Measurement Device and Calibration Topics 4
S Calibration Frequency for Slip Gauge Kit used for CMM Calibration? General Measurement Device and Calibration Topics 0
S Calibration/Verification of customer fixtures IATF 16949 - Automotive Quality Systems Standard 6
Ron Rompen Calibration by manufacturer ISO 17025 related Discussions 4
Q Calibration verification records 7.1.5.2.1 IATF 16949 - Automotive Quality Systems Standard 2
B AS9100D 7.1.5.2 Calibration or Verification Method using outside cal lab AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 1
W Next Calibration Due Date Calibration Frequency (Interval) 5
S Where do l get calibration standards to run a calibration lab? Other ISO and International Standards and European Regulations 2
A OEM On-Site Calibration issues during Covid19 ISO 9000, ISO 9001, and ISO 9004 Quality Management Systems Standards 12
D Calibration tolerance question using Pipettes Medical Device and FDA Regulations and Standards News 1
M Calibration Certificate Result issued by an accredited external laboratory General Measurement Device and Calibration Topics 9
G Calibration of "Master Parts" Used as Gauges Calibration Frequency (Interval) 5
R Calibration lab environmental monitoring General Measurement Device and Calibration Topics 4
G Calibration of Rotronic probe but not digital readout? General Measurement Device and Calibration Topics 3
F Standard Calibration Procedures: Recommended Practice ISO 17025 related Discussions 0
T Temperature Requirements For In House Calibration - AS9100 AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 16
B Gage calibration frequency, ISO and IATF - What are the requirements Calibration Frequency (Interval) 3

Similar threads

Top Bottom