The Fluke Calibration 9172 is a high precision metrology well designed for demanding temperature calibration applications in professional calibration laboratories, industrial facilities and quality assurance departments.
With a temperature range from +35 °C to +425 °C, exceptional temperature stability of up to ±0.005 °C and a calibrated display accuracy of up to ±0.1 °C, the Fluke Calibration 9172 provides excellent conditions for calibrating platinum resistance thermometers, industrial RTDs, thermistors and other compatible temperature sensors.
The instrument combines the convenience of a dry block calibrator with advanced metrological performance.
One of its most important features is the calibration well depth of 203 mm, providing excellent immersion conditions for temperature sensors.
The Fluke Calibration 9172 also offers radial temperature uniformity from ±0.01 °C to ±0.025 °C, depending on the calibration temperature.
These characteristics make the instrument particularly suitable for comparison calibration, where a calibrated reference thermometer and the device under test are measured simultaneously.
An optional integrated reference thermometer input allows compatible platinum resistance thermometers to be measured directly.
The instrument also provides programmable calibration procedures, automatic temperature switch testing and an RS232 communication interface.
europascal supports customers with professional temperature calibration equipment, reference thermometers and complete calibration solutions.
For professional calibration services and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
- Temperature range from +35 °C to +425 °C
- Temperature stability from ±0.005 °C to ±0.01 °C
- Display accuracy from ±0.1 °C to ±0.2 °C
- Radial temperature uniformity from ±0.01 °C to ±0.025 °C
- Excellent axial temperature uniformity
- Calibration well depth of 203 mm
- Temperature resolution of 0.001 °C
- Low loading effect of ±0.01 °C
- Temperature hysteresis of 0.04 °C
- Optional integrated reference thermometer input
- Support for ITS-90 thermometer coefficients
- Support for Callendar Van Dusen coefficients
- Interchangeable brass calibration inserts
- Six standard insert configurations
- Programmable calibration procedures
- Automatic temperature switch testing
- RS232 communication interface
- Compatible with MET/TEMP II calibration software
- NIST traceable calibration included
- Professional technical support from europascal
Ideal for Demanding Calibration Applications
The Fluke Calibration 9172 is designed for applications requiring excellent temperature stability, low thermal gradients and reproducible calibration conditions.
Accurate temperature measurements are essential in pharmaceutical production, laboratory testing, industrial manufacturing and process control.
Temperature sensors must be calibrated regularly to maintain reliable measurement results.
The Fluke Calibration 9172 provides a controlled temperature environment for comparison calibration.
Its temperature range from +35 °C to +425 °C covers numerous industrial and laboratory applications.
The instrument is particularly suitable for calibrating platinum resistance thermometers and industrial temperature sensors.
Typical applications include calibration laboratories, pharmaceutical production, temperature controlled manufacturing processes and quality assurance departments.
For demanding calibration applications, a calibrated external reference thermometer can be used to determine the actual temperature inside the calibration insert.
This allows the device under test to be compared directly with a traceable reference temperature.
Temperature Range from +35 °C to +425 °C
The Fluke Calibration 9172 provides a temperature range of:
+35 °C to +425 °C
The specified range applies at an ambient temperature of 23 °C.
This makes the instrument suitable for calibration applications requiring temperatures above ambient conditions.
The integrated heating system enables the instrument to generate stable temperatures throughout its operating range.
Typical calibration temperatures may include 50 °C, 100 °C, 150 °C, 200 °C, 300 °C and 400 °C.
The appropriate calibration points depend on the operating range and accuracy requirements of the temperature sensor under test.
Exceptional Temperature Stability
Temperature stability is one of the most important characteristics of a precision temperature calibrator.
The Fluke Calibration 9172 provides:
±0.005 °C from 35 °C to 100 °C
±0.008 °C from 100 °C to 225 °C
±0.01 °C from 225 °C to 425 °C
These values demonstrate the excellent temperature control performance of the instrument.
Temperature stability describes fluctuations of the calibration source temperature over time under defined operating conditions.
Excellent stability is particularly important when calibrating precision resistance thermometers.
It helps reduce measurement uncertainty contributions caused by temporal temperature fluctuations.
However, temperature stability must not be confused with the accuracy of the internal temperature indication or the expanded measurement uncertainty of a calibration.
Accurate Temperature Indication
The Fluke Calibration 9172 features a calibrated temperature display.
The manufacturer specifies:
±0.1 °C from 35 °C to 100 °C
±0.15 °C from 100 °C to 225 °C
±0.2 °C from 225 °C to 425 °C
These specifications describe the accuracy of the internal temperature indication.
For applications where this accuracy is sufficient, the internal temperature indication can be used as the reference.
For demanding comparison calibration, an external calibrated reference thermometer is recommended.
The reference thermometer measures the temperature at the calibration position.
The device under test can then be compared with the reference temperature.
The achievable measurement uncertainty depends on the reference thermometer, temperature uniformity, stability and calibration procedure.
Excellent Axial Temperature Uniformity
The Fluke Calibration 9172 provides well-characterized axial temperature uniformity.
The manufacturer specifies:
±0.05 °C from 35 °C to 100 °C
±0.1 °C from 100 °C to 225 °C
±0.2 °C from 225 °C to 425 °C
These values describe the temperature distribution within a 60 mm axial zone.
Axial uniformity describes temperature differences along the vertical direction of the calibration well.
Temperature gradients can influence calibration results when sensors have different immersion depths or sensing element positions.
The Fluke Calibration 9172 is designed to minimize these effects.
For accurate comparison calibration, the reference thermometer and device under test should be positioned at suitable and comparable immersion depths.
Excellent Radial Temperature Uniformity
The Fluke Calibration 9172 provides excellent radial temperature uniformity.
The manufacturer specifies:
±0.01 °C from 35 °C to 100 °C
±0.02 °C from 100 °C to 225 °C
±0.025 °C from 225 °C to 425 °C
Radial uniformity describes temperature differences between measurement positions within the calibration insert.
Good radial uniformity is particularly important when several temperature sensors are calibrated simultaneously.
It helps ensure that the reference thermometer and devices under test are exposed to similar temperatures.
The actual temperature distribution depends on the insert configuration, probe dimensions and thermal loading.
Low Temperature Loading Effect
The Fluke Calibration 9172 provides a low temperature loading effect.
The manufacturer specifies:
±0.01 °C throughout the operating range
This specification applies under defined conditions using one 6.35 mm reference thermometer and three additional 6.35 mm probes.
The loading effect describes temperature changes caused by inserting additional sensors into the calibration block.
Low loading effects are particularly important during comparison calibration.
They help maintain stable temperature conditions when several sensors are inserted simultaneously.
Temperature Hysteresis
The Fluke Calibration 9172 has a specified temperature hysteresis of:
0.04 °C
Temperature hysteresis describes differences in the temperature indication depending on whether a calibration temperature is approached from a higher or lower temperature.
This effect can contribute to the measurement uncertainty.
The Fluke Calibration 9172 is designed to provide reproducible calibration conditions during heating and cooling cycles.
Calibration Well Depth of 203 mm
One of the most important advantages of the Fluke Calibration 9172 is its deep calibration well.
The manufacturer specifies:
203 mm
This corresponds to:
8 inches
Sufficient immersion depth is particularly important when calibrating resistance thermometers.
Heat conduction along the thermometer stem can cause differences between the sensing element temperature and the actual temperature of the calibration block.
The deep calibration well helps reduce these effects.
It is particularly beneficial when calibrating longer industrial temperature sensors.
The required immersion depth depends on the sensor construction, diameter, sensing element length and calibration temperature.
Temperature Resolution of 0.001 °C
The Fluke Calibration 9172 provides a temperature display resolution of:
0.001 °C
This corresponds to one millikelvin.
The fine display resolution allows small temperature changes to be observed.
It is particularly useful when monitoring temperature stability and performing precision comparison measurements.
Display resolution must not be confused with temperature accuracy or measurement uncertainty.
Heating and Cooling Performance
The Fluke Calibration 9172 provides efficient heating performance.
The manufacturer specifies the following typical times:
Heating from 35 °C to 425 °C: 27 minutes
Cooling from 425 °C to 100 °C: 100 minutes
Cooling from 425 °C to 35 °C: 220 minutes
These characteristics support calibration procedures involving multiple temperature points.
The heating time of approximately 27 minutes allows the instrument to reach its maximum operating temperature relatively quickly.
Cooling from high temperatures requires considerably more time.
Actual heating and cooling times depend on operating conditions and thermal loading.
Interchangeable Calibration Inserts
The Fluke Calibration 9172 uses interchangeable brass calibration inserts.
Different insert configurations are available for temperature sensors with different diameters.
The manufacturer offers six standard configurations.
Insert A: Mixed imperial calibration openings.
Insert B: Imperial comparison openings.
Insert C: Six openings with a diameter of 6.35 mm.
Insert D: Metric comparison openings.
Insert E: Mixed metric openings with an additional 6.35 mm reference opening.
Insert F: Metric comparison openings with an additional 6.35 mm reference opening.
A blank insert is also available for customized applications.
The appropriate insert should be selected according to the dimensions of the reference thermometer and the devices under test.
A suitable fit between the sensor and insert helps improve thermal contact and reduce measurement uncertainty.
Optional Integrated Reference Thermometer Input
The Fluke Calibration 9172 is available with an optional integrated reference thermometer input.
These versions are identified by the additional R in the model designation.
For example:
Fluke Calibration 9172-A-R
The integrated reference input supports compatible platinum resistance thermometers.
It allows temperature measurements using ITS-90 and Callendar Van Dusen coefficients.
The manufacturer specifies the following reference readout accuracy values for 25 Ω and 100 Ω PRTs:
±0.007 °C at 0 °C
±0.011 °C at 155 °C
±0.013 °C at 225 °C
±0.019 °C at 425 °C
These values describe the accuracy of the integrated reference thermometer readout.
They do not include the uncertainty of the connected reference thermometer.
The total measurement uncertainty depends on the reference thermometer, readout and calibration conditions.
Platinum Resistance Thermometer Calibration
The Fluke Calibration 9172 is particularly suitable for calibrating platinum resistance thermometers.
Typical applications include Pt100 sensors, precision platinum resistance thermometers and compatible reference thermometers.
The sensor under test is inserted into a suitable calibration opening.
A calibrated reference thermometer is positioned in another opening.
After thermal stabilization, the temperature indications are compared.
The indication error can be calculated as:
ΔT = T_DUT − T_REF
Where:
ΔT is the temperature indication error.
T_DUT is the temperature indicated by the device under test.
T_REF is the reference temperature.
The measurement uncertainty depends on the reference thermometer, thermal uniformity, stability, loading effect and immersion depth.
Automated Calibration Procedures
The Fluke Calibration 9172 includes programmable calibration functions.
The instrument supports:
Four programmable calibration procedures
Each procedure can contain up to:
Eight temperature setpoints
Users can configure temperature setpoints, ramp times and hold times.
This helps simplify repeated calibration procedures.
The instrument can automatically move between selected temperature setpoints without requiring continuous manual adjustment.
These functions are particularly useful when calibrating temperature sensors at several temperatures.
Automatic Temperature Switch Testing
The Fluke Calibration 9172 supports automatic temperature switch testing.
Temperature switches are widely used in industrial process control and safety systems.
The automatic test function simplifies the determination of switching temperatures and switching hysteresis.
This helps improve efficiency during routine maintenance and calibration procedures.
RS232 Communication and Automation
The Fluke Calibration 9172 features an integrated RS232 communication interface.
This allows the instrument to communicate with a computer or compatible calibration software.
The instrument is compatible with Fluke Calibration MET/TEMP II software.
The interface supports remote operation and integration into automated calibration procedures.
Automated calibration can help reduce manual work and improve the consistency of repeated measurements.
The instrument can also be operated independently without a computer.
Technical Highlights
| Specification | Fluke Calibration 9172 |
|---|---|
| Manufacturer | Fluke Calibration |
| Model | 9172 |
| Product type | Metrology Well |
| Temperature range | +35 °C to +425 °C |
| Reference ambient temperature | 23 °C |
| Display accuracy, 35 °C to 100 °C | ±0.1 °C |
| Display accuracy, 100 °C to 225 °C | ±0.15 °C |
| Display accuracy, 225 °C to 425 °C | ±0.2 °C |
| Stability, 35 °C to 100 °C | ±0.005 °C |
| Stability, 100 °C to 225 °C | ±0.008 °C |
| Stability, 225 °C to 425 °C | ±0.01 °C |
| Axial uniformity, 35 °C to 100 °C | ±0.05 °C |
| Axial uniformity, 100 °C to 225 °C | ±0.1 °C |
| Axial uniformity, 225 °C to 425 °C | ±0.2 °C |
| Radial uniformity, 35 °C to 100 °C | ±0.01 °C |
| Radial uniformity, 100 °C to 225 °C | ±0.02 °C |
| Radial uniformity, 225 °C to 425 °C | ±0.025 °C |
| Loading effect | ±0.01 °C |
| Hysteresis | 0.04 °C |
| Temperature resolution | 0.001 °C |
| Calibration well depth | 203 mm |
| Heating time, 35 °C to 425 °C | 27 minutes |
| Cooling time, 425 °C to 100 °C | 100 minutes |
| Cooling time, 425 °C to 35 °C | 220 minutes |
| Calibration inserts | A, B, C, D, E, F |
| Insert material | Brass |
| Optional reference input | Available |
| Reference readout | ITS-90 and CVD |
| Temperature switch testing | Integrated |
| Communication interface | RS232 |
| Compatible software | MET/TEMP II |
| Dimensions | 366 × 203 × 323 mm |
| Weight | 13.2 kg |
| Power supply | 115 V or 230 V AC |
| Power consumption | 1025 W |
| Calibration documentation | NIST traceable calibration included |
Fluke Calibration 9172 or Fluke Calibration 9171?
The Fluke Calibration 9172 and Fluke Calibration 9171 belong to the same family of precision metrology wells.
Both instruments provide excellent temperature stability and thermal uniformity.
However, they differ in temperature range and application.
The Fluke Calibration 9172 operates from +35 °C to +425 °C.
The Fluke Calibration 9171 operates from −30 °C to +155 °C.
Both instruments feature a calibration well depth of 203 mm.
The Fluke Calibration 9171 provides temperature stability of ±0.005 °C throughout its operating range.
The Fluke Calibration 9172 provides temperature stability from ±0.005 °C to ±0.01 °C, depending on the calibration temperature.
The Fluke Calibration 9172 is particularly suitable for applications requiring temperatures up to 425 °C.
The Fluke Calibration 9171 is designed for applications requiring temperatures below ambient conditions.
The appropriate instrument depends on the required temperature range, sensor dimensions and measurement uncertainty requirements.
Calibration Service by europascal
Regular calibration is essential for maintaining reliable temperature measurements.
europascal provides professional calibration services for temperature measuring instruments and calibration equipment.
When calibrating a metrology well, several characteristics must be considered.
These include temperature indication error, stability, axial temperature uniformity, radial temperature uniformity, loading effects and hysteresis.
The overall measurement uncertainty also depends on the reference thermometer and its calibration uncertainty.
For professional calibration services and metrological traceability, visit the europascal Calibration Service.
europascal also supports customers in selecting suitable reference thermometers, calibration inserts and complete temperature calibration systems.
Why Choose the Fluke Calibration 9172?
The Fluke Calibration 9172 combines exceptional temperature stability with a deep calibration well and excellent thermal uniformity.
Its temperature range from +35 °C to +425 °C makes it suitable for numerous industrial and laboratory calibration applications.
Temperature stability from ±0.005 °C to ±0.01 °C provides reproducible calibration conditions.
The calibrated temperature display offers an accuracy from ±0.1 °C to ±0.2 °C, depending on the operating temperature.
Excellent radial temperature uniformity supports accurate comparison calibration.
The 203 mm calibration well depth helps reduce errors caused by insufficient immersion.
Interchangeable brass calibration inserts allow different sensor diameters to be accommodated.
The optional integrated reference thermometer input provides additional flexibility for high precision temperature measurements.
Programmable calibration procedures, automatic temperature switch testing and RS232 communication support efficient calibration workflows.
For professional calibration laboratories requiring excellent metrological performance at temperatures up to 425 °C, the Fluke Calibration 9172 provides a reliable and versatile solution.
europascal supports customers with temperature calibration equipment, technical advice and professional calibration services.
Typical Calibration Applications with the Fluke Calibration 9172
The Fluke Calibration 9172 is suitable for calibrating platinum resistance thermometers, precision resistance thermometers, industrial RTDs, thermistors and other compatible temperature sensors.
Typical applications include pharmaceutical production, laboratory temperature measurement, industrial process instrumentation, thermal processing, quality assurance and calibration laboratories.
The combination of excellent temperature stability, deep calibration well, well-characterized thermal uniformity and automated calibration functions makes the Fluke Calibration 9172 a professional solution for demanding temperature calibration applications.
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