Best practices for temperature calibration

Best practices for temperature calibration
Best practices
for temperature
calibration
Application Note
Temperature plays a key role in many industrial and commercial processes. Examples
include monitoring cooking temperature in food processing, measuring the temperature
of molten steel in a mill, verifying the temperature in a cold storage warehouse or refrigeration system, or regulating temperatures in the drying rooms of a paper manufacturer.
A temperature transmitter will use a measuring device to sense the temperature, and
then regulate a 4-20 mA feedback loop to a control element that affects the temperature
(Fig. 1). The control element might consist of a valve that opens or closes to allow more
steam into a heating process or more fuel
to a burner. The two most common types
of temperature sensing devices are the
4 Wire RTD
thermocouple (TC) and resistive temperaTransmitter
ture detector (RTD).
Fluke provides a broad range of
temperature calibration tools to help
4 to 20 mA
2200 ºC
2200°
C
you quickly and reliably calibrate your
temperature instrumentation. A summary
of the temperature calibration capabilities
of Fluke Process Tools is shown below.
RTD Sensor
300
250
200
150
100
50
MENU
0
-200
ENTER
100
200
300
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400
9141
9009
9100S
9102S
6102
7102
7103
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7526A
9140
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9103
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9190A-P
9142/9143/9144
Fluke 754
Fluke 753
Fluke 726
Fluke 725
Fluke 724
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Fluke 721
Fluke 714B
Fluke 714
Fluke 712B
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9190A
Apply known temperatures to verify T/C and RTD
Provide temperature traceability
Measure temperature from an RTD probe
Measure temperature from a T/C probe
Simulate an RTD output
Simulate an RTD into pulsed excitation current
Simulate a T/C output
Simultaneous output a T/C, measure mA
Simultaneous output an RTD, measure mA
Log a temperature measurement
Ramp a temperature signal
Loop power supply
Multifunction Source and Measure
Automatically calibrate temperature switches
Manually calibrate temperature switches
Electronic data capture
Upload documented data to PC
Integrated HART communication
Simulate characterized RTD
Measure characterized RTD
Accredited calibration
Equilibrate irregularly shaped probes
Generate hot and cold temperatures simultaneously
Fluke 712
Fluke Temperature
Test Tools
Function
0
Figure 1.
9142-P/9143-P/9144-P
Fluke 724 Temperature Calibrator
-100
Ohms Vs. Temp (PT100)
ZERO SPAN
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Typical Temperature Calibration Applications
How to calibrate a Thermocouple input transmitter
724 TEMPERATURE CALIBRATOR
V
MEAS
SOURCE
mA
LOOP
˚C
V
˚F
RTD
TC
TEST DC PWR
STORE
SETUP
100%
RECALL
25%
– ++ –
25%
0%
30V MAX ALL TERMINALS
SOURCE / MEASURE
3W
4W
V
TC
V
mA
Rosemount 444
MEASURE
RTD
LOOP
COM
COM
The Fluke 724 Temperature
Calibrator can provide the three
things necessary to calibrate a
temperature transmitter. You can
source a temperature, provide
loop power, and measure the
resulting output current. The
following example shows how to
calibrate a Type K TC transmitter
that is ranged from 0-150 degrees centigrade, generating an
output current range from
4-20 mA.
Basic Calibrator Setup
1. Connect the 724 test leads to
the TC transmitter as shown.
The output from the thermocouple jacks on the 724
will simulate a temperature
input to the transmitter. The
red and black test leads will
provide loop power to the
transmitter and will measure
the current resulting from
temperature changes into the
transmitter.
2. Power on the 724 calibrator.
Select the mA button and the
LOOP button to select measure milliamps with 24 V loop
power applied.
3. Press the Meas/Source button
until the lower portion of the
724 display indicates the
source mode.
4. Depress the TC button until a
TC type of K is displayed.
5. Select the °C button for
centigrade.
6. Set the Zero Point for this
application into the Calibrator. To do this set the display
initially to 0.0 °C. You can use
the up and down arrow keys
to change the output value.
Use the left and right arrows
to control which decade
value of the display is being
changed. When the display
reads 0.0, hold down the 0 %
key on the 724 and observe
that 0 % is displayed in the
lower right corner of the
screen. This establishes the
Zero point for calibration.
7. Set the Span Point in the
Calibrator. Set the display to
the desired Span value for
calibration. In this example
the display should read
150 °C. Depress the 100 %
key and observe that 100 %
is displayed in the lower
right corner of the screen.
This establishes the Span
point for calibration.
Temperature transmitter error calculation example
mA Measurement
TC Source
T Span
Formula
4.02
0 °C
150 °C
([4.02-4)/16]-[0/150])*100
0.1250
11.95
75 °C
150 °C
([11.95-4)/16]-[75/150])*100
-0.3125
20.25
150 °C
150 °C
([20.25-4)/16]-[150/150])*100 1.5625
2 Fluke Corporation
Best practices for temperature calibration
Error %
Performing an “As Found” Test
8. Depress the 0 % key; record
the applied temperature and
the corresponding mA measurement.
9. Depress the 25 %↑ key (2)
times; record the applied temperature and the corresponding mA measurement.
10.Depress the 100 % key; record the applied temperature
and the corresponding mA
measurement.
11.Calculate the errors for each
of the (3) points using the
following formula: ERROR =
([(I-4)/16]-[(T/TSPAN])*100
where Error is in % of span,
I is your recorded mA measurement, T is the recorded
temperature and TSPAN is the
temperature input span
(100 % - 0 % points). The
error calculation table below
shows how to apply the
formula to actual recorded
measurements.
12.If your calculated errors
are less than the specified
instrument tolerance, the
transmitter has passed the
As-Found test. If the test has
not passed, perform adjustments as necessary.
Adjusting the Transmitter
13.Depress the 0 % key to source
the proper temperature for a
4 mA output. Adjust the zero
potentiometer until the current reading is 4.00 mA.
14.Depress the 100 % key to
source the proper temperature
for a 20 mA output. Adjust the
Span potentiometer until the
current reading is 20.00 mA.
15.Depress the 0 % key again
and adjust the zero potentiometer again if necessary, to
get a 4.00 mA output.
Perform an “As Left” Test
Repeat steps 8 through 12 to
complete the full calibration
procedure on your temperature
transmitter.
Indicator setpoint
controller
754
DOCUMENTING PROCESS CALIBRATOR
98.9° C
MENU
Measured
controlled
process
Indicator setpoint
controller
ENTER
754
DOCUMENTING PROCESS CALIBRATOR
98.9° C
Control
MENU
Measured
controlled
process
B
Disconnected
T/C
A
Control
valve
Output
or alarm
ENTER
Control
TC input
Disconnected
T/C
Output
or alarm A
B
TC
input
Control
valve
Fuel supply
Fuel supply
Sourcing temperature, documented indicator
verification
The performance of a temperature indicator can be verified
by applying a calibrated signal to the sensor input and
noting the results. The performance of the indicator can be
documented using the 750 series calibrators by entering the
indicator value using the keypad.
754
Verifying thermostat or temperature controllers
The performance of a thermostat or temperature controller
can be determined by measuring the outputs while applying
a temperature signal to the input. In this example, a Fluke
750 series calibrator simultaneously varies the input signal
while monitoring contact closure on the output. The calibrator then documents the measured setpoint, reset point and
deadband size.
DOCUMENTING PROCESS CALIBRATOR
TC probe
Setpoint
controller
TC
+
100.0° C
MENU
754
DOCUMENTING PROCESS CALIBRATOR
2
ENTER
1
4
–
+
T/C input
Measured
controlled
process
TC
–
3
5
T
Control
output
3144
Transmitter
Control
valve
Fuel supply
Measuring temperature
Process temperatures can be verified using a temperature
calibrator or digital thermometer. In this example, both the
controller/indicator and its’ input sensor can be verified at
the process operating temperature.
Precision RTD Temperature Measurement
Use characteristic RTD probes with the 726 Precision
Multifunction Process Calibrator for enhanced temperature
measurement accuracy.
3 Fluke Corporation
Best practices for temperature calibration
Calibrate a HART temperature transmitter
HART “smart” transmitters require digital adjustment if found
to be out of specification. This task requires a precision
calibrator and a digital configuration tool. The Fluke 754
shown is connected to a Rosemount 3144 HART temperature transmitter. In this configuration, the 754 applies a T/C
simulation signal and measures the mA output and digital
PV. If adjustment is necessary, sensor trim, output trim and
re-ranging can be performed with the Fluke 754.
Fluke 712B
Temperature Calibrator
Fluke 724
Temperature Calibrator
• Measure and simulate (13) different
RTD types and resistance
• Measure 4 to 20 mA signals while
simultaneously sourcing a
temperature signal
• Hanging tool designed in and included
with every unit.
• Configurable 0 % and 100 % source
settings for quick 25 % linearity checks
• Linear ramp and 25 % step auto ramp
based on 0% and 100 % settings
• Measure and simulate (12) different
thermocouple types and millivolts
• Measure and simulate 7 RTD types
(see 712)
• Measure or source VDC, Ω
• Measure 24 mA, with or without
24 volt loop supply
• Source TC or RTD while measuring
V or mA
• Handles pulsed RTD transmitters
with pulses >25 ms
Fluke 714B
Thermocouple Calibrator
Fluke 725
Multifunction Process Calibrator
• Measure and simulate (17) different
thermocouple types and millivolts
• Measure 4 to 20 mA signals while
simultaneously sourcing a
temperature signal
• Hanging tool designed
in and included with every unit.
• Configurable 0 % and 100 % source
settings for quick 25 % linearity checks
• Linear ramp and 25 % step auto ramp
based on 0 % and 100 % settings
All the temperature capabilities of the
Fluke 724, plus:
• Measure pressure with Fluke 700Pxx
Pressure Modules
• Source or measure frequency to 10 kHz
• Source mA signals
Fluke 726 Precision
Multifunction Process Calibrator
Fluke 721
Precision Pressure Calibrator
• Ideal for gas flow calibration (custody
transfer) applications
• Two isolated, stainless steel, pressure
sensors with 0.025% accuracy
• Pt100 RTD input for temperature
measurement, (probe optional)
• Measures 4 to 20 mA signals
• Internal 24 V loop power supply can
power a transmitter under test
• Measure up to 30 V DC, check 24 V
loop power supplies
• Extend pressure measurement range
with connection to external 700 series
pressure modules (29 ranges)
• Large backlit graphic display can display
up to three inputs simultaneously
• Store five instrument setups for recall
and use
4 Fluke Corporation
Best practices for temperature calibration
All the capabilities of the Fluke 725 plus:
• 0.01 % accuracy
• Error calculation
• Characterized RTD constants
• Enhanced measurement accuracy
• Measure and source pulse totalization
Fluke 753 and 754 Documenting
Process Calibrators
• Measure and simulate (13) different
thermocouple types and millivolts
• Measure and simulate 7 RTD types,
per 712 below, plus Cu 10 (47)
• Source or measure volts, ohms,
mA, frequency
• Measure pressure with Fluke 750Pxx
Pressure Modules
• Electronically capture results of
automated procedures
• Communication to PC-USB
• HART communication (754)
Eliminating errors from temperature sensors
In addition to sourcing a voltage or
resistance to verify your temperature transmitter or temperature
controller you may want to verify
your thermocouple or RTD as well.
This is especially important for
critical instrumentation that could
potentially compromise product or
process quality if it does not conform to specifications.
There are a few reasons you
may want a traceable calibration
that includes the sensor:
• Eliminate up to 75% of the
error in a process measurement
• Conform to health, safety,
environment, and other
government regulations
• Comply with quality standards
such as ISO 9000, which
require regular calibration of
all quality related equipment
• Reduce waste and improve
productivity
• Comply with customer contracts
requiring traceability to national standards
• Be certain measurements will
be reproduced within known
limits of error when instruments
are replaced
Comparison
Insert
100.00°C
Dry-well
sensor
F1
F2
F3
F4
Dry-well’s
thermometer/
controller
Individual temperature sensor calibration or verification
Another common method is to separate the RTD or thermocouple
from the control loop and verify that at each temperature set point
the resistance of the RTD or the voltage of the thermocouple
conforms to the limits of error expected at each temperature.
Loop calibration
including a process
temperature sensor
Temperature
sensor
under test
0.2° C
2200 ºC
MENU
Heated block
ENTER
Readout/controller
DCSP/PLC/recorder
Dry-well’s
thermometer/controller
0.01°C
F1
5 Fluke Corporation
ENTER
Heated block
ZERO SPAN
Dry-well
sensor
100.2° C
MENU
RTD resistance or
thermocouple voltage
Insert
Readout/controller
DCSP/PLC/recorder
Temperature
sensor
under test
F2
F3
F4
Best practices for temperature calibration
Most often temperature
sensors are calibrated in
the field by removing
them from the process and
placing them in a reference
temperature source such
as a dry-block calibrator or
portable calibration bath.
In a loop calibration the
instrumentation remains
connected to the control loop
and the indicated temperature
is read from the display
as the actual temperature
is read from the reference
temperature source.
Connecting a Fluke 754
to a Fluke Calibration
dry-well
754
Automating and documenting
a temperature calibration that
includes a Fluke Calibration
temperature source is easily
accomplished by connecting
it to a Fluke 754.
For detailed instructions
see the application note
“Eliminating sensor errors
in loop calibrations”:
Lit code 2148146.
DOCUMENTING PROCESS CALIBRATOR
Fluke Calibration
Dry-well
(DB9)
Null modem
Hart Dry-well
cable kit,
P/N 2111088
Fluke Calibration
3.5 mm
interface cable
Fluke Calibration
Dry-well (3.5 mm)
Temperature Source Summary Performance
Type
Range
Accuracy
Stability
Immersion
Depth
Weight
Special functions
9190
Dry-block
–95 °C to 140 °C
(–139 °F to
284 °F)
± 0.2 °C Accuracy
with External Reference: ± 0.05 °C”
± 0.015 °C full range
160 mm
(6.3 in)
16 kg
(35 lb)
Process version measures RTDs, Thermocouples, 4-20 mA and will power
the loop. Compatible with Fluke 754.
9142
Dry-block
–25 °C to 150 °C (–13 °F
to 302 °F)
± 0.2 °C
± 0.01 °C Full Range
150 mm
(5.9 in)
8.16 kg
(18 lb)
Process version measures RTDs,
Thermocouples, 4-20 mA and will
power the loop. Performs automated
thermal switch test. Compatible with
Fluke 754
9143
Dry-block
33 °C to 350 °C
(91 °F to 662 °F)
± 0.2 °C
± 0.02 °C at 33 °C
± 0.02 °C at 200 °C
± 0.03 °C at 350 °C”
150 mm
(5.9 in)
7.3 kg
(16 lb)
Process version measures RTDs,
Thermocouples, 4-20 mA and will
power the loop. Performs automated
thermal switch test. Compatible with
Fluke 754
9144
Dry-block
50 °C to 660 °C (122 °F
to 1220 °F)
± 0.35 °C at 50 °C
± 0.35 °C at 420 °C
± 0.5 °C at 660 °C
± 0.03 °C at 50 °C
± 0.04 °C at 420 °C
± 0.05 °C at 660 °C
150 mm
(5.9 in)
7.7 kg
(17 lb)
Process version measures RTDs,
Thermocouples, 4-20 mA and will
power the loop. Performs automated
thermal switch test. Compatible with
Fluke 754
9103
Dry-block
–25 °C to 140 °C
(–13 °F to 284 °F)
at 23 °C ambient
± 0.25 °C
± 0.02 °C at –25 °C
± 0.04 °C at 140 °C
124 mm
(4.9 in)
5.7 kg
(12 lb) Thermal switch testing. Compatible
with Fluke 754.
9140
Dry-block
35 °C to 350 °C
(95 °F to 662 °F)
± 0.5 °C
± 0.03 °C at 50 °C
± 0.05 °C at 350 °C
124 mm
(4.9 in)
2.7 kg
(6 lb) Thermal switch testing. Compatible
with Fluke 754.
9100S
Dry-block
35 °C to 375 °C (95 °F to
707 °F)
± 0.25 °C at 50 °C
± 0.25 °C at 100 °C
± 0.5 °C at 375 °C
± 0.07 °C at 50 °C
± 0.1 °C at 100 °C
± 0.3 °C at 375 °C
102 mm
(4 in)
1 kg
(2 lb
3 oz)
Compatible with Fluke 754.
9102S
Dry-block
–10 °C to 122 °C (14 °F to
252 °F) at 23 °C ambient
± 0.25 °C
± 0.05 °C
102 mm
(4 in)
1.8 kg
(4 lb)
Compatible with Fluke 754.
9009
Dry-block
Hot Block: 50 °C to
350 °C (122 °F to 662 °F)
Cold Block: –15 °C to
110 °C (5 °F to 230 °F)
Hot Block: ± 0.6 °C
Cold Block: ± 0.2 °C
± 0.05 °C
102 mm
(4 in)
4.5 kg (10 lb)
Simultaneous hot and cold block
usage. Compatible with Fluke 754
6102
Portable
Bath
35 °C to 200 °C
(95 °F to 392 °F) ± 0.25 °C ± 0.02 °C at 100 °C
(oil 5013)
± 0.03 °C at 200 °C
(oil 5013)
140 mm
(5.5 in)
4.5 kg (10 lb)
with fluid
Compatible with Fluke 754.
7102
Portable
Bath
–5 °C to 125 °C
(23 °F to 257 °F)
± 0.25 °C
± 0.015 °C at –5 °C
(oil 5010)
140 mm
(5.5 in)
6.8 kg (15 lb)
with fluid
Compatible with Fluke 754.
7103
Portable
Bath
–30 °C to 125 °C (–22 °F
to 257 °F)
± 0.25 °C ± 0.03 °C at –25 °C
(oil 5010)
± 0.05 °C at 125 °C
(oil 5010)
140 mm
(5.5 in)
9.8 kg (22 lb)
with fluid
Compatible with Fluke 754.
6 Fluke Corporation
Best practices for temperature calibration
Temperature Test Tool Summary Performance: Selected examples
Range
Resolution
Accuracy
Notes
Measure -200 to 800C
Source -200 to 800C
Measure -200 to 800 °C
Simulate -200 to 800 °C
Measure -200 to 800 °C
Simulate -200 to 800 °C
Measure -200 to 800 °C
Source -200 to 800 °C
Measure -40 °C to 150 °C
Measure 0 to 10,000 Ω
Source 0 to 10,000 Ω
Measure 15 to 3200 Ω
Source 15 to 3200 Ω
Measure 0 to 4000 Ω
Source 5 to 4000 Ω
Measure 0 to 400 Ω
Source 1.0 to 4000 Ω
Measure -200 to 1372 °C
Simulate -200 to 1372 °C
Measure -200 to 1372 °C
0.1 °C
0.015 % + 0.18 °C
13 types
0.1 °C
0.02% +0.05 °C
8 RTD types
0.1 °C
0.1 °C
0.01 °C
0.01 °C
0.01 °C
0.01 Ω
0.01 Ω
0.1 Ω
0.1 Ω
0.1 Ω
0.33 °C
0.33 °C
0.15 °C
0.15 °C
0.015% of rdg
.05 % + 50 mΩ
.01 % + 20 mΩ
.1 Ω to 1 Ω
.1 Ω to 1 Ω
0.015 %
7 RTD types
0.01 Ω
0.015 % + 0.05 Ω
0.1 °C
0.1 °C
0.1 °C <1000 °C
0.1 °C >1000 °C
0.1 °C <1000 °C
0.1 °C >1000 °C
0.1 °C
0.1 °C
0.1 °C
0.3 °C
0.3 °C
0.05 % rdg + 0.3 °C
JKTERSN
0.05 % rdg + 0.3 °C
JKTE
0.8 °C
0.3 °C on 726
0.3 °C
13 Types
0.001 mV
0.001 mV
0.01 mV
0.01 mV
0.01 mV
.02 % + .005 % FS
.01 % + .005 % FS
.025 % + 2 counts
.025 % + 2 counts
0.01 % + 1 count
0.01 mV
0.001 mA
0.001 mA
0.001 mA
0.001 mA
0.015 % + 10 uA
0.010 % + 2 counts
0.010 % + 2 counts
0.010 % + 5 uA
0.010 % + 2 counts
n/a
±10 %
754
753
725
726
724
721
714B
712B
53/54
51/52
Function
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•
mV
•
mV
•
mV
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•
•
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RTD
PT100-385
RTD
PT100-385
RTD
PT100-385
RTD
PT 100-385
RTD PT 100-385
Resistance
100 Ω range
Resistance
100 Ω range
Resistance
100 Ω range
Resistance
400 Ω range
Thermocouple
Type K
Thermocouple
Type K
Thermocouple
•
Type K
Thermocouple
Type K
Thermocouple Type K
•
•
•
mV
Measure mA
Measure mA
Measure mA
Measure mA
Loop Power Supply
Measure -200 to 1372 °C
Measure -200 to 1370 °C
Simulate -200 to 1370 °C
Measure -200 to 1372 °C
Source -200 to 1372 °C
Measure +-110 mV
Source +-110 mV
Measure 0 to 100 mV
Source 0 to 100 mV
Measure 0 to 100 mV
Source 0 to 100 mV
-10 to 75 mV
0 to 24 mA
0 to 24 mA
0 to 24 mA
Measure 0 to 24 mA
Source 0 to 24 mA
24 V dc
Temperature Terminology
Dry Block Calibrator: A temperature calibrator that uses a
precision oven to source precise
temperature. This style of calibrator is often used for the verification of temperature sensors.
ITS-90: International Temperature
Scale of 1990. A temperature calibration standard adopted in 1990
using intrinsic standards to make
it possible to use and compare
temperature measurements in a
meaningful way, anywhere in
the world.
R0 The resistance value of an RTD
probe at 0 °C. Example PT100385, R0 = 100 W.
RTD: Resistance Temperature
Device, a temperature measurement sensor that has predictable
Excitation current: A constant
changes in resistance with a
current applied to an RTD probe
change in temperature. The most
to determine actual resistance
common RTD is the platinum
Lead Resistance Compensation:
for temperature measurement.
A compensation method used with 3 PT100-385.
Typical values are 2 mA or less
and 4 wire RTDs and resistance mea- Seebeck Effect: Thermoelectric
to minimize self-heating of the
surement. This method negates the
effect in which the voltage potenprobe.
error associated with lead resistance
tial increases with temperature
when making an RTD measurement. (thermocouples) in a junction of
IPTS-68: International Practical
dissimilar metals.
Temperature Scale of 1968. A
Reference Temperature: A refertemperature standard adopted in ence condition used for comparing Triple point of water: A defin1968 that uses intrinsic standards measurement results to a standard ing temperature of the ITS-90
to define the measurement of
data set. Examples include 0 °C
occurring at 0.01 °C when water
temperature.
for thermocouple tables, and the
coexists simultaneously in three
triple point of water for the ITS-90. states: liquid, solid, and vapor.
7 Fluke Corporation
Best practices for temperature calibration
8 RTD types
13 Types
17 types
Fluke Calibration 9190A Ultra-Cool
Field Metrology Well
• Wide temperature range: –95 °C to 140 °C
• Accuracy using built-in reference
thermometer readout: ± 0.05 °C full range
• Basic accuracy: ± 0.2 °C full range
• Reads thermocouples, RTDs, and 4-20 mA
(w/24V Loop power)
• Best-in-class stability: ± 0.015 °C full range
• Cools from 23 °C to –95 °C in 90 minutes
• Portable: weighs only 16 kg (35 lbs)
• Built-in front and back handles for easy two-handed carry
• Conforms with EURAMET cg-13 guidance on
measurement practices for temperature calibrators
Fluke Calibration
9142/9143/
9144 Field
Metrology Wells
•Lightweight,
portable, and fast
-25 °C to 660 °C
• Built-in two-channel readout for PRT, RTD,
thermocouple, 4-20 mA current (P version only)
• True reference thermometry with
accuracy to ±0.01 °C
• On-board automation and documentation
• Metrology performance in accuracy, stability, uniformity, and
loading
• Direct interface to the Fluke 754
Fluke Calibration 9103/9140
Field Dry-Well Calibrators
• Lightweight and very portable
• Accuracy to ± 0.25 °C
• 9103 goes as low as –25 °C.
• Direct interface to Fluke 754
• 9140 is 6 pounds (2.7 kg)
• 9140 reaches max temp in 12 minutes
• RS-232 and Interface-it
software included
• Interchangeable inserts
• Direct interface to the Fluke 754
8 Fluke Corporation
Best practices for temperature calibration
Fluke Calibration
9100S/9102S
Handheld Dry-Well
Calibrators
• A temperature source that you can take anywhere
• Fast and easy calibrations of temperature sensors
• 9102S weighs only 4 lbs (1.8 kilograms)
• 9102S temperature range: –10 °C to 122 °C
(14 °F to 252 °F)
• 9100S weighs only 2 lbs, 3 oz (1 kilogram)
• 9100S temperature range: 35 °C to 375 °C
• 9100S accuracy: ± 0.07 °C at 50 °C; ± 0.1 °C at
100 °C; ± 0.3 °C at 375 °C
• Accuracy: ± 0.25 °C
• Direct interface to the Fluke 754
Fluke Calibration 9009
Industrial Dual-Block Dry-Well
• Calibrate temperature sensors fast
• Independently controlled cold
and hot blocks
• –15 °C to 110 °C (cold block),
50 °C to 350 °C (hot block)
• Self-contained in a rugged watertight case
• Four removable inserts
• Direct interface to Fluke 754
Fluke Calibration
6102/7102/7103
Micro-Baths
• World’s smallest portable
calibration baths
• Calibrates sensors of any
size or shape
• Stability to ±0.015 °C
• 6102 Temperature range: 35 °C to 200 °C
• 7102 Temperature range: –5 °C to 125 °C
• 7103 Temperature range: –30 °C to 125 °C
• Direct interface to the Fluke 754
Fluke Calibration 7526A
Precision process Calibrator
• Sources and measures dc voltage,
current, resistance, RTDs and thermocouples
• Precision pressure measurement using Fluke 700 series
pressure modules
• Includes 24 V dc transmitter loop power supply
• Measures 4-20 mA loop current
• Includes automated switch-test function
• Accepts ITS-90 coefficients for accurate SPRT measurements
• Compatible with MET/CAL® Calibration Software
• Includes certificate of calibration traceable to
national standards (optional A2LA accredited
calibration available upon request)
Temperature
Conversion
°F
°C
4352
2400
4172
2300
3992
2200
3812
Thermocouples
Plug
Color
White
B
+
Pt-30 % Rh
Platinum30 % Rhodium
Alloys
Pt-6 % Rh
Platinum6 % Rhodium
Temperature
Range
600 to 1820 °C,
1112 to 3308 °F
EMF Range
1.792 to 13.820 mV
W-5 % Re
Tungsten5 % Rhenium
W-26 % Re
Tungsten26 % Rhenium
0 to 2316 °C,
32 to 4201 °F
0 to 37.079 mV
Purple
E
Cu-Ni
Copper-Nickel
(Constantan)
-250 to 1000 °C,
-418 to 1832 °F
-9.719 to 76.370 mV
2100
Ni-Cr
Nickel-Chromium
(Chromel)
3632
2000
Black
Iron Fe
-210 to 1200 °C,
-346 to 2193 °F
-8.096 to 69.555 mV
3452
1900
Cu-Ni
Copper-Nickel
(Constantan)
Yellow
K
Ni-Cr
Nickel-Chromium
(Chromel)
Ni-Al
Nickel-Aluminum
-200 to 1372 °C,
-328 to 2502 °F
-5.891 to 54.886 mV
Blue
Fe Iron
Cu-Ni
Copper-Nickel
(Constantan)
-200 to 900 °C,
-328 to 1652 °F
-8.166 to 53.147 mV
Red
C
J
3272
1800
3092
1700
2912
1600
2732
1500
2552
1400
2372
1300
R
2192
1200
2012
1100
1832
1000
1652
900
1472
800
1292
700
1112
600
932
500
752
400
572
300
392
200
212
100
32
L
Orange
Ni-Cr-Si
Ni-Si-Mg
Nickel-Chromium- Nickel-SiliconSilicon (Nicrosil)
Magnesium (Nisil)
-200 to 1300 °C,
-328 to 2372 °F
-3.990 to 47.514 mV
Green
Pt-13 % Rh
Platinum13 % Rhodium
Pt Platinum
-20 to 1767 °C,
-4 to 3213 °F
-0.101 to 21.089 mV
Green
Pt-10 % Rh
Platinum10 % Rhodium
Pt Platinum
-20 to 1767 °C,
-4 to 3213 °F
-0.103 to 18.682 mV
Cu Copper
(Constantan)
Cu-Ni
Copper-Nickel
-250 to 400 °C,
-418 to 752 °F
-6.181 to 20.873 mV
Cu Copper
Cu-Ni
Copper-Nickel
-200 to 600° C,
-328 to 1112 °F
-5.693 to 34.320 mV
N
S
Blue
T
White
U
Fluke.Keeping your world
up and running.®
Fluke Corporation
PO Box 9090, Everett, WA USA 98206
0
-148
-100
-328
-200
-459
-273
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. (800) 443-5853 or
Fax (425) 446-5116
In Europe/M-East/Africa (31 40) 2 675 200 or
Fax (31 40) 2 675 222
In Canada (800) 36-FLUKE or
Fax (905) 890-6866
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Web access: http://www.fluke.com/
©2014 Fluke Corporation. 10/2014 6003467a-en
9 Fluke Corporation
Best practices for temperature calibration
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