Fluke 754 [9/12] Temperature measurement and simulation specifications

Temperature measurement and simulation speciﬁcations

Conﬁdence Interval: k=3

Speciﬁcations must be carefully considered when comparing calibrators from

different vendors.

For example, Fluke speciﬁcations use a 3-sigma conﬁdence interval (k = 3). This

means that 99.7 % of measurements will remain in speciﬁcation over the stated

period of time. Other manufacturers use a 2-sigma conﬁdence interval (k = 2).

This means that 95.4 % of measurements will remain in speciﬁcation over the

stated period of time so one in 20 instruments are statistically likely to fail to

perform to their speciﬁcations.

The most important components of a process calibrator speciﬁcation are:

• Reference uncertainty. Performance of a calibrator at 23 °C + 3 °C at the time it is

veriﬁed by the manufacturer. This speciﬁcation does not include the effects of time

and temperature, two of the largest components of calibrator error

• Time. Fluke 750 Series calibrators are delivered with both one-year and two-year

specs, to limit your calibration support costs. You choose your cal interval based

upon the performance you need

• Temperature. Fluke process calibrator specs reﬂect performance from 18 °C to

28°C. Compensation factors are provided to permit speciﬁed use of the calibra-

tors over a wide -10 °C to 50 °C range

• Allowance for traceability. Fluke specs are not relative specs, but total specs,

including an allowance for uncertainty of standards that provide traceability to

national standards

For more information, view our interpreting speciﬁcations webinar or refer to the application note

“Understanding Speciﬁcations For Process Calibrators.”

Why you can depend on Fluke calibrator speciﬁcations

9 Fluke Corporation 750 Series Brochure

Temperature, Thermocouples

Type Source °C Measure °C Source °C

1 year 2 years 1 year 2 years

E -250 to -200 1.3 2.0 0.6 0.9

-200 to -100 0.5 0.8 0.3 0.4

-100 to 600 0.3 0.4 0.3 0.4

600 to 1000 0.4 0.6 0.2 0.3

N -200 to -100 1.0 1.5 0.6 0.9

-100 to 900 0.5 0.8 0.5 0.8

900 to 1300 0.6 0.9 0.3 0.4

J -210 to -100 0.6 0.9 0.3 0.4

-100 to 800 0.3 0.4 0.2 0.3

800 to 1200 0.5 0.8 0.3 0.3

K -200 to -100 0.7 1.0 0.4 0.6

-100 to 400 0.3 0.4 0.3 0.4

400 to 1200 0.5 0.8 0.3 0.4

1200 to 1372 0.7 1.0 0.3 0.4

T -250 to -200 1.7 2.5 0.9 1.4

-200 to 0 0.6 0.9 0.4 0.6

0 to 400 0.3 0.4 0.3 0.4

B 600 to 800 1.3 2.0 1.0 1.5

800 to 1000 1.0 1.5 0.8 1.2

1000 to 1820 0.9 1.3 0.8 1.2

R -20 to 0 2.3 2.8 1.2 1.8

0 to 100 1.5 2.2 1.1 1.7

100 to 1767 1.0 1.5 0.9 1.4

S -20 to 0 2.3 2.8 1.2 1.8

0 to 200 1.5 2.1 1.1 1.7

200 to 1400 0.9 1.4 0.9 1.4

1400 to 1767 1.1 1.7 1.0 1.5

C 0 to 800 0.6 0.9 0.6 0.9

800 to 1200 0.8 1.2 0.7 1.0

1200 to 1800 1.1 1.6 0.9 1.4

1800 to 2316 2.0 3.0 1.3 2.0

L -200 to -100 0.6 0.9 0.3 0.4

-100 to 800 0.3 0.4 0.2 0.3

800 to 900 0.5 0.8 0.2 0.3

U -200 to 0 0.6 0.9 0.4 0.6

0 to 600 0.3 0.4 0.3 0.4

Type Source °C Measure °C Source °C

1 year 2 years 1 year 2 years

BP 0 to 1000 1.0 1.5 0.4 0.6

1000 to 2000 1.6 2.4 0.6 0.9

2000 to 2500 2.0 3.0 0.8 1.2

XK -200 to 300 0.2 0.3 0.2 0.5

300 to 800 0.4 0.6 0.3 0.6

Sensor inaccuracies not included.

Accuracy with external cold junction; for internal junction add 0.2 °C

Resolution: 0.1 °C

Temperature scale: ITS-90 or IPTS-68, selectable (90 is default)

Compensation: ITS-90 per NIST Monograph 175 for B,R,S,E,J,K,N,T; IPTS-68 per IEC 584-1 for B,R,S,E,J,K,T; IPTS-68

per DIN 43710 for L,U. GOST P 8.585-2001 for BP and XK, ASTM E988-96 for C (W5Re/W26Re)

Temperature coefﬁcient: 0.05°C/°C (<18°C or >28°C) 0.07°C/°C for C type > 1800°C and for BP type > 2000°C

Instrument operating temperature: 0 °C to 50 °C for C and BP type thermocouples / -10 °C to 50°C for all other types

Normal mode rejection: 65 dB at 50 Hz or 60 Hz nominal

Temperature, Resistance Temperature Detectors

Degrees or % of reading

Type (α) Range °C Measure °C

Source

current

Source °C Allowable

current

1 year 2 years 1 year 2 years

100 Ω Pt (385) -200 to 100 0.07 °C 0.14 °C 1 mA 0.05 °C 0.10 °C 0.1 mA to 10 mA

100 to 800 0.02 % + 0.05 °C 0.04 % + 0.10 °C 0.0125 % + 0.04 °C 0.025 % + 0.08 °C

200 Ω Pt (385) -200 to 100 0.07 °C 0.14 °C 500 µA 0.06 °C 0.12 °C 0.1 mA to 1 mA

100 to 630 0.02 % + 0.05 °C 0.04 % + 0.10 °C 0.017 % + 0.05 °C 0.034 % + 0.10 °C

500 Ω Pt (385) -200 to 100 0.07 °C 0.14 °C 250 µA 0.06 °C 0.12 °C 0.1 mA to 1 mA

100 to 630 0.02 % + 0.05 °C 0.04 % + 0.10 °C 0.017% + 0.05 °C 0.034 % + 0.10 °C

1000 Ω Pt (385) -200 to 100 0.07 °C 0.14 °C 150 µA 0.06 C 0.12 C 0.1 mA to 1 mA

100 to 630 0.02 % + 0.05 °C 0.04% + 0.10 °C 0.017 % + 0.05 °C 0.034 % + 0.10 °C

100 Ω Pt (3916) -200 to 100 0.07 °C 0.14 °C 1 mA 0.05 °C 0.10 °C 0.1 mA to10 mA

100 to 630 0.02 % +0.05 °C 0.04 % +0.10 °C 0.0125 % + 0.04 °C 0.025 % + 0.08 °C

100 Ω Pt (3926) -200 to 100 0.08 °C 0.16 °C 1 mA 0.05 °C 0.10 °C 0.1 mA to 10 mA

100 to 630 0.02 % +0.06 °C 0.04 % +0.12 °C 0.0125 % + 0.04 °C 0.025 % + 0.08 °C

10 Ω Cu (427) -100 to 260 0.2 °C 0.4 °C 3 mA 0.2 °C 0.4 °C 1 mA to 10 mA

120 Ω Ni (672) -80 to 260 0.1 °C 0.2 °C 1 mA 0.04 °C 0.08 °C 0.1 mA to 10 mA

Speciﬁcations are valid to k=3

Sensor inaccuracies not included

For two and three-wire RTD measurements, add 0.4°C to the speciﬁcations.

Resolution: 0.01 °C except 0.1 °C for 10 Ω Cu (427)

Temperature coefﬁcient: 0.02 °C/°C source, (<18°C or >28°C), 0.01 °C/C for measure

Maximum input voltage: 30 V

Supports pulsed transmitters and PLCs with pulse times as short as 1 ms

RTD reference: Pt(385): IEC 60751, 2008; (3916): JIS C 1604, 1981 ; Pt(3926), Cu(427), Ni(672): Minco Application Aid #18

Fluke 754 [9/12] Temperature measurement and simulation specifications

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