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9170 Series
Metrology Well Calibrators
• Best-performing industrial heat sources
(accuracy, stability, uniformity) in the
world
• Immersion depth to 203 mm (8 in)
• Optional ITS-90 reference input reads
PRTs to ±0.006 °C
• Temperature range from –45 °C to 700 °C
In short, there are six critical
components of performance in
an industrial heat source (which
the European metrology community explains, for example, in
the document EA-10/13): calibrated display accuracy, stability,
axial (vertical) uniformity, radial
(well-to-well) uniformity, impact
from loading, and hysteresis. We
added a seventh in the form of a
legitimate reference thermometer
input and created an entirely new
product category: Metrology Wells.
(By the way, Metrology Wells are
the only products on the market
supported by published specifications addressing every performance category in the EA-10/13.
Our specs aren’t just hopes or
guidelines. They apply to every
Metrology Well we sell.)
Technical Data
Every once in a while, a new
product comes around that
changes the rules. It happened
when we introduced handheld
dry-wells. It happened when
we introduced Micro-Baths. Now
we’ve combined bath-level performance with dry-well functionality and legitimate reference
thermometry to create Metrology
Wells.
With groundbreaking new proprietary electronics from Fluke
Calibration (patents pending),
Metrology Wells let you bring labquality performance into whatever
field environment you might work
in. New analog and digital control techniques provide stability
as good as ±0.005 °C. And with
dual-zone control, axial (or “vertical”) uniformity is as good as
±0.02 °C over a 60 mm (2.36 in)
zone. (That’s 60 mm!) Such performance doesn’t exist anywhere
else outside of fluid baths.
Display accuracy
Dry-wells are typically calibrated
by inserting a calibrated PRT
into one of the wells and making adjustments to the calibrator’s internal control sensor based
on the readings from the PRT.
This has limited value because
the unique characteristics of the
reference PRT, which essentially
become “calibrated into” the calibrator, are often quite different
from the thermometers tested by
the calibrator. This is complicated
by the presence of significant
thermal gradients in the block
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Built-In Reference Thermometry!
Fluke Calibrationhas been making the
world’s best thermometer readout devices
for quite some time. Our Super-Thermometer, Black Stack, and Tweener thermometers are well-known everywhere. Now
we’re making our proprietary Tweener
measurement circuitry available directly
in a heat source — our new Metrology
Wells.
This optionally built-in input accepts
100-, 25-, and 10-ohm PRTs. It reads
thermometer probes accurately from
±0.006 °C at 0 °C to ±0.027 °C at 661 °C,
not including errors from the probe. It is
compatible with every PRT sold by Fluke
Calibration and connects to Metrology
Wells via a 5-pin DIN connector.
and inadequate sensor immersion
into blocks that are simply too
short.
Metrology Wells are different.
Temperature gradients, loading
effects, and hysteresis have been
minimized to make the calibration of the display much more
meaningful. We use only traceable, accredited PRTs to calibrate
Metrology Wells and our proprietary electronics consistently demonstrate repeatable accuracy more
than ten times better than our
specs, which range from ±0.1 °C
at the most commonly used temperatures to ±0.25 °C at 661 °C.
For even better accuracy, Metrology Wells may be ordered with
built-in electronics for reading
external PRTs with ITS-90 characterizations. (See sidebar, Built-in
Reference Thermometry, above.)
Stability
Heat sources from Fluke Calibration have long been known as
the most stable heat sources in
the world. It only gets better with
Metrology Wells. Both low-temperature units (Models 9170 and
9171) are stable to ±0.005 °C over
their full range. Even the 700 °C
unit (Model 9173) achieves stability of ±0.03 °C. Better stability
can only be found in fluid baths
Two things dramatically differentiate
the Tweener circuit from the measurement electronics built into many drywells. First, it accepts unique ITS-90
characterization coefficients from reference thermometers, which allow you to
take full advantage of the accuracies of
those thermometers. Second, it comes
with a traceable, accredited calibration, providing you full confidence in the
integrity of its measurements.
Nothing beats a Fluke Calibration
Metrology Well for industrial thermal performance. And nothing beats a Tweener
measurement for built-in reference thermometry.
and primary fixed-point devices.
The “off-the-shelf controllers”
used by most dry-well manufacturers simply can’t provide this
level of performance.
Axial uniformity
The EA-10/13 document suggests
that dry-wells should include a
zone of maximum temperature
homogeneity, which extends for
40 mm (1.54 in), usually at the
bottom of a well. Metrology Wells,
however, combine our unique
electronics with dual-zone control and more well depth than
is found in dry-wells to provide
homogeneous zones over 60 mm
(2.36 in). Vertical gradients in
these zones range from ±0.02 °C
at 0 °C to ±0.4 °C at 700 °C.
What’s more, Metrology Wells
actually have these specifications
published for each unit, and we
stand by them.
Radial uniformity
Radial uniformity is the difference in temperature between
one well and another well. For
poorly designed heat sources, or
when large-diameter probes are
used, these differences can be
very large. For Metrology Wells,
we define our specification as the
largest temperature difference
between the vertically homogeneous zones of any two wells
that are each 6.4 mm (0.25 in)
in diameter or smaller. The cold
units (9170 and 9171) provide
radial uniformity of ±0.01 °C and
the hot units (9172 and 9173)
range from ±0.01 °C to ±0.04 °C
(at 700 °C).
Loading
Loading is defined as the change
in temperature sensed by a reference thermometer inserted into
the bottom of a well after the rest
of the wells are filled with thermometers, too.
For Metrology Wells, loading
effects are minimized for the
same reasons that axial gradients
are minimized. We use deeper
wells than found in dry-wells.
And we utilize proprietary dualzone controls. Loading effects are
as minimal as ±0.005 °C in the
cold units.
Hysteresis
Thermal hysteresis exists far more
in internal control sensors than
in good-quality reference PRTs.
It is evidenced by the difference
in two external measurements
of the same set-point temperature when that temperature is
approached from two different
directions (hotter or colder) and
is usually largest at the midpoint
of a heat source’s temperature
range. It exists because control
sensors are typically designed for
ruggedness and do not have the
“strain free” design characteristics
of SPRTs, or even most PRTs. For
Metrology Wells, hysteresis effects
range from 0.025 °C to 0.07 °C.
Immersion depth
Immersion depth matters. Not
only does it help minimize axial
gradient and loading effects, it
helps address the unique immersion characteristics of each
thermometer tested in the heat
source. Those characteristics
include the location and size
2 Fluke Calibration, Metrology Well Calibrators
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Insert “F”
Metrology Well displays offer all the information deeded to perform calibrations—control and
reference probe temperatures, heating and cooling status, set-point temperature, stability
criteria, and more.
of the actual sensor within the
probe, the width and thermal
mass of the probe, and the lead
wires used to connect the sensor
to the outside world. Metrology
Wells feature well depths of 203
mm (8 in) in the Models 9171,
9172, and 9173. The Model 9170
is 160 mm (6.3 in) deep to facilitate temperature of –45 °C.
Even without a PC, Metrology
Wells have four different preprogrammed calibration tasks that
allow up to eight temperature
set points with “ramp and soak”
times between each. There is an
automated “switch test” protocol
that zeros in on the “dead-band”
for thermal switches. And a dedicated °C/°F button allows for easy
switching of temperature units.
Other great features
A large LCD display, numeric keypad, and on-screen menus make
use of Metrology Wells simple and
intuitive. The display shows the
block temperature, built-in reference thermometer temperature,
Any of six standard inserts
may be ordered with each unit,
accommodating a variety of metric- and imperial-sized probe
diameters. (See inset at right.) And
Metrology Wells are small enough
and light enough to go anywhere.
cutout temperature, stability criteria, and ramp rate. The user interface can be configured to display
in English, French, or Chinese.
All four models come with an
RS-232 serial interface and the
Model 9930, Interface-it software. All are also compatible
with Model 9938 MET/TEMP II
software for completely automated
calibrations of RTDs, thermocouples, and thermistors (Metrology Wells with built-in reference
input options will be compatible
with MET/TEMP II in early 2006).
3 Fluke Calibration, Metrology Well Calibrators
9170
The Model 9170 achieves the
lowest temperatures of the series,
reaching –45 °C in normal room
conditions. The 9170 is stable to
±0.005 °C over its full temperature
range (up to 140 °C) and has 160
mm (6.3 in) of immersion depth.
With axial uniformity of ±0.02 °C
and radial uniformity of ±0.01 °C,
this model delivers exceptional
uncertainty budgets and is perfect
for a variety of pharmaceutical
and other applications.
1/4 in
3/16 in
3/8 in
1/4 in
1/8 in
1/4 in
Insert “A”
1/4 in
3/16 in
3/8 in
3/16 in
3/8 in
1/4 in
Insert “B”
1/4 in 1/4 in
1/4 in
1/4 in
1/4 in1/4 in
Insert “C”
3 mm
4 mm
6 mm 6 mm
4 mm
3 mm
Insert “D”
0.25 in
3 mm
10 mm
4 mm
8 mm
6 mm
Insert “E”
3 mm
4 mm
6 mm
4 mm
0.25 in
3 mm
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The Metrology Well family consist of four models (Model 9170, 9171, 9172, amd 9173) which, combined, cover a temperature range of -45 ⁰C to 700 ⁰C.
unmatched performance. The
9171
If you need more depth, the
Model 9171 provides 203 mm
(8 in) of immersion over temperatures from –30 °C all the way to
155 °C with full-range stability
of ±0.005 °C. Just like the 9170,
this dry-well has exceptional
axial and radial uniformity. The
display of the 9171 is calibrated
to an accuracy of ±0.1 °C over its
full range.
9173 has a display accuracy
of ±0.25 °C at 700 °C and an
immersion depth of 203 mm (8
in). Stability and uniformity performance of this unit are enough
to dramatically reduce uncertainty
budgets for calibrations of thermometers at high temperatures.
Of course, there’s still a place
in the world for dry-wells or “dry
block” calibrators. In fact, Fluke
Calibration makes and will continue to make some of the best
9172
The Model 9172 provides temperatures from 35 °C to 425 °C
with a calibrated display accurate
to ±0.2 °C at 425 °C. In addition
to exceptional accuracy, the 9172 is
stable from ±0.005 °C to ±0.01 °C,
depending on temperature. With
203 mm (8 in) of immersion, the
9172 significantly reduces stem
conduction errors at high temperatures.
9173
performing, portable, fast drywells in the world. There’s still
nothing better for a quick test of
industrial temperature sensor performance.
We just can’t resist the urge,
though, to keep coming up with
breakthrough product designs that
can dramatically impact the ways
people work and the results they
see. For the absolute best performance in a portable temperature
source, Metrology Wells raise the
standard to an entirely new level.
For work between 50 °C and
700 °C, the Model 9173 provides
4 Fluke Calibration, Metrology Well Calibrators
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Specifications
9170 9171 9172 9173
Range (at 23 °C ambient) –45 °C to 140 °C
Display accuracy ±0.1 °C full range ±0.1 °C at 100 °C
Stability ±0.005 °C full range ±0.005 °C to 100 °C
Axial uniformity (60 mm) ±0.1 °C at –45 °C
Radial uniformity ±0.01 °C full range ±0.01 °C at 100 °C
Loading effect (with a 6.35 mm
reference probe and three
6.35 mm probes)
Hysteresis 0.025 °C 0.04 °C 0.07 °C
Well depth 160 mm (6.3 in) 203 mm (8 in)
Resolution 0.001 °C
Display LCD, °C or °F, user-selectable
Key pad Ten key with decimal and +/- button. Function keys, menu key, and °C / °F key.
Cooling time 44 min: 23 °C to –45 °C
Heating time 32 min: 23 °C to 140 °C
Size (height x width x depth) 366 x 203 x 323 mm (14.4 x 8 x 12.7 in)
Weight 15 kg (33 lb) 15 kg (33 lb) 13.2 kg (29 lb) 15 kg (33 lb)
Power 115 VAC (±10%), 6.3 A, or
Computer interface RS-232 Interface with 9930 Interface-it control software included
Traceable calibration (NIST) Data at –45 °C, 0 °C, 50 °C,
(–49 °F to 284 °F)
±0.04 °C at –35 °C
±0.02 °C at 0 °C
±0.07 °C at 140 °C
±0.02 °C at –45 °C
±0.005 °C at –35 °C
±0.01 °C at 140 °C
19 min: 23 °C to –30 °C
19 min: 140 °C to 23 °C
45 min: –45 °C to 140 °C
230 VAC (±10%), 3.15 A
100 °C, and 140 °C
–30 °C to 155 °C
(–22 °F to 311 °F)
±0.025 °C at –30 °C
±0.02 °C at 0 °C
±0.07 °C at 155 °C
±0.005 °C at –30 °C
±0.005 °C at 0 °C
±0.01 °C at 155 °C
30 min: 23 °C to –30 °C
25 min: 155 °C to 23 °C
44 min: 23 °C to 155 °C
56 min: –30 °C to 155 °C
Data at –30 °C, 0 °C, 50 °C,
100 °C, and 155 °C
35 °C to 425 °C
(95 °F to 797 °F)
±0.15 °C at 225 °C
±0.2 °C at 425 °C
±0.008 °C to 225 °C
±0.01 °C to 425 °C
±0.05 °C at 100 °C
±0.1 °C at 225 °C
±0.2 °C at 425 °C
±0.02 °C at 225 °C
±0.025 °C at 425 °C
±0.01 °C full range ±0.02 °C at 425 °C
220 min: 425 °C to 35 °C
100 min: 425 °C to 100 °C
27 min: 35 °C to 425 °C 46 min: 50 °C to 700 °C
115 VAC (±10%), 10 A, or 230 VAC (±10%), 5 A
Data at 100 °C, 150 °C,
250 °C,
350 °C, and 425 °C
50 °C to 700 °C†
(122 °F to 1292 °F)
±0.2 °C at 425 °C
±0.25 °C at 660 °C
±0.005 °C to 100 °C
±0.01 °C to 425 °C
±0.03 °C to 700 °C
±0.1 °C at 100 °C
±0.25 °C at 425 °C
±0.4 °C at 700 °C
±0.01 °C at 100 °C
±0.025 °C at 425 °C
±0.04 °C at 700 °C
±0.04 °C at 700 °C
235 min: 700 °C to 50 °C
153 min: 700 °C to 100 °C
Data at 100 °C, 200 °C, 350 °C,
500 °C, and 660 °C
†
Calibrated to 660 °C; reference thermometer recommended at higher temperatures.
Specifications Built-in reference input
Temperature range –200 °C to 962 °C (–328 °F to 1764 °F)
Resistance range 0 Ω to 400 Ω, auto-ranging
Characterizations ITS-90 subranges 4, 6, 7, 8, 9, 10, and 11 Callendar-Van Dusen (CVD): R0, α, α, α
Resistance accuracy 0 Ω to 20 Ω: 0.0005 Ω
Temperature accuracy (does
not include probe uncertainty)
Resistance resolution 0 Ω to 20 Ω: 0.0001 Ω
Measurement period 1 second
Probe connection 4-wire with shield, 5-pin DIN connector
Calibration NVLAP accredited (built-in reference input only), NIST-traceable calibration provided
5 Fluke Calibration, Metrology Well Calibrators
10 Ω PRTs:
±0.013 °C at 0 °C
±0.014 °C at 155 °C
±0.019 °C at 425 °C
±0.028 °C at 700 °C
20 Ω to 400 Ω: 25 ppm
25 Ω and 100 Ω PRTs:
±0.007 °C at –100 °C
±0.006 °C at 0 °C
±0.011 °C at 155 °C
±0.013 °C at 225 °C
±0.019 °C at 425 °C
±0.027 °C at 661 °C
20 Ω to 400 Ω: 0.001 Ω
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Order information
9170 Metrology Well
9170-X –45 °C to 140 °C, w/INSX
9170-X-R Metrology Well, –45 °C to 140 °C, w/
INSX, w/Built-In Reference
X in the above model numbers to be replaced with A,
B, C, D, E, or F as appropriate for the desired insert.
See the illustration on page 3 and listing below.
9170-INSA Insert “A”, 9170, Al, Misc Holes
9170-INSB Insert “B”, 9170, Al, Comparison Holes
9170-INSC Insert “C”, 9170, Al, 0.25-inch Holes
9170-INSD Insert “D”, 9170, Al, Metric Comparison
Holes
9170-INSE Insert “E”, 9170, Al, Misc Metric Holes,
w/0.25-inch Ref Hole
9170-INSF Insert “F”, 9170, Al, Metric Comparison
Holes, w/0.25-inch Ref Hole
9170-INSZ Insert “Z”, 9170, Al, Blank
9170-CASE Case, Carrying, 9170–3 Metrology
Wells
9170-DCAS Case, Transportation with Wheels,
9170–3 Metrology Wells
9171 Metrology Well
9171-X Metrology Well, –30 °C to 155 °C, w/
INSX
9171-X-R Metrology Well, –30 °C to 155 °C, w/
INSX, w/Built-In Reference
X in the above model numbers to be replaced with A,
B, C, D, E, or F as appropriate for the desired insert.
See the illustration on page 3 and listing below.
9171-INSA Insert “A”, 9171, Al, Misc Holes
9171-INSB Insert “B”, 9171, Al, Comparison Holes
9171-INSC Insert “C”, 9171, Al, 0.25-inch Holes
9171-INSD Insert “D”, 9171, Al, Comparison Metric
Holes
9171-INSE Insert “E”, 9171, Al, Misc Metric Holes,
w/0.25-inch Ref Hole
9171-INSF Insert “F”, 9171, Al, Metric Comparison
Holes, w/0.25-inch Ref Hole
9171-INSZ Insert “Z”, 9171, Al, Blank
9170-CASE Case, Carrying, 9170–3 Metrology
Wells
9170-DCAS Case, Transportation with Wheels,
9170–3 Metrology Wells
6 Fluke Calibration, Automated 7380 temperature calibration systems
9172 Metrology Well
9172-X Metrology Well, 35 °C to 425 °C, w/
9172-X-R Metrology Well, 35 °C to 425 °C, w/
X in the above model numbers to be replaced with A,
B, C, D, E, or F as appropriate for the desired insert.
See the illustration on page 3 and listing below.
9172-INSA Insert “A”, 9172, Brass, Misc Holes
9172-INSB Insert “B”, 9172, Brass, Comparison
9172-INSC Insert “C”, 9172, Brass, 0.25-inch Holes
9172-INSD Insert “D”, 9172, Brass, Metric Compari-
9172-INSE Insert “E”, 9172, Brass, Misc Metric
9172-INSF Insert “F”, 9172, Brass, Metric Compari-
9172-INSZ Insert “Z”, 9172, Brass, Blank
9170-CASE Case, Carrying, 9170–3 Metrology
9170-DCAS Case, Transportation with Wheels,
9173 Metrology Well
9173-X Metrology Well, 50 °C to 700 °C, w/
9173-X-R Metrology Well, 50 °C to 700 °C, w/
X in the above model numbers to be replaced with A,
B, C, D, E, or F as appropriate for the desired insert.
See the illustration on page 3 and listing below.
9173-INSA Insert “A”, 9173, Al-Brnz, Misc Holes
9173-INSB Insert “B”, 9173, Al-Brnz, Comparison
9173-INSC Insert “C”, 9173, Al-Brnz, 0.25-inch
9173-INSD Insert “D”, 9173, Al-Brnz, Comparison
9173-INSE Insert “E”, 9173, Al-Brnz, Misc Metric
9173-INSF Insert “F”, 9173, Al-Brnz, Metric Com-
9173-INSZ Insert “Z”, 9173, Al-Brnz, Blank
9170-CASE Case, Carrying, 9170–3 Metrology
9170-DCAS Case, Transportation with Wheels,
INSX
INSX, w/Built-In Reference
Holes
son Holes
Holes, w/0.25-inch Ref Hole
son Holes, w/0.25-inch Ref Hole
Wells
9170–3 Metrology Wells
INSX
INSX, w/Built-In Reference
Holes
Holes
Metric Holes
Holes, w/0.25-inch Ref Hole
parison Holes, w/0.25-inch Ref Hole
Wells
9170–3 Metrology Wells
Fluke Calibration.
Precision, performance, confidence.
Fluke Calibration
PO Box 9090, Everett, WA 98206 U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:
In the U.S.A. (877) 355-3225 or
Fax (425) 446-5116
In Europe/M-East/Africa +31 (0) 40 2675 200 or
Fax +31 (0) 40 2675 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.flukecal.com
©2005-2012 Fluke Calibration.
Specifications subject to change without notice.
Printed in U.S.A. 9/2012 2458660C_EN
Modification of this document is not permitted
without written permission from Fluke Calibration.
™
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