The Fluke Calibration 9133 is a portable infrared temperature calibrator designed for accurate and reliable calibration of non-contact infrared thermometers, pyrometers and industrial infrared temperature measurement systems.
With a temperature range from −30 °C to +150 °C, integrated thermoelectric cooling and a high-emissivity blackbody target, the Fluke Calibration 9133 provides a versatile solution for professional infrared temperature calibration.
The instrument features a temperature-controlled blackbody surface with a diameter of 57 mm and a nominal emissivity of 0.95.
Its excellent temperature accuracy of ±0.4 °C and temperature stability of ±0.1 °C support reliable calibration procedures in laboratories, industrial facilities and maintenance departments.
Unlike conventional heating-only infrared calibrators, the Fluke Calibration 9133 uses integrated solid-state cooling technology to generate temperatures significantly below ambient conditions.
At an ambient temperature of 23 °C, the instrument can reach temperatures as low as −30 °C.
This makes the Fluke Calibration 9133 particularly suitable for calibrating infrared thermometers used in low-temperature applications.
A convenient dry gas connection helps prevent ice formation on the calibration target during operation at low temperatures.
The instrument also provides fast heating and cooling performance, allowing calibration temperatures to be reached efficiently.
With a weight of approximately 4.6 kg, the Fluke Calibration 9133 combines professional infrared calibration performance with excellent portability.
An integrated RS-232 communication interface supports computer-controlled operation and automated calibration procedures.
europascal supports customers with professional infrared temperature calibration equipment, reference thermometers and calibration services.
For professional calibration and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
- Portable infrared temperature calibrator
- Temperature range from −30 °C to +150 °C
- Integrated thermoelectric cooling
- Temperature accuracy of ±0.4 °C
- Temperature stability of ±0.1 °C
- Blackbody target diameter of 57 mm
- Nominal target emissivity of 0.95
- Emissivity tolerance of ±0.02 from 8 µm to 14 µm
- Temperature resolution of 0.1 °C
- Fast heating and cooling performance
- Heating from 25 °C to 150 °C in approximately 15 minutes
- Cooling from 25 °C to −20 °C in approximately 15 minutes
- Integrated dry gas connection
- Reduced risk of ice formation on the target
- Compact and portable construction
- Weight of approximately 4.6 kg
- Suitable for infrared thermometer calibration
- Suitable for industrial pyrometer calibration
- Suitable for non-contact temperature measurement systems
- RS-232 communication interface
- Compatible with Interface-it software
- NIST-traceable calibration data
- Professional calibration support from europascal
Infrared Temperature Calibration from −30 °C to +150 °C
The Fluke Calibration 9133 provides a controlled infrared calibration target over a temperature range from:
−30 °C to +150 °C
The specified temperature range applies at an ambient temperature of 23 °C.
This temperature range covers many important industrial and laboratory infrared calibration applications.
The instrument is particularly suitable for calibrating infrared thermometers used for measurements below ambient temperature.
Its integrated cooling system allows the blackbody target to reach temperatures down to −30 °C without requiring external refrigeration equipment.
The Fluke Calibration 9133 also provides elevated temperatures up to +150 °C.
This makes the instrument suitable for a wide variety of non-contact temperature measurement applications.
High-Emissivity Blackbody Target
The Fluke Calibration 9133 features a temperature-controlled blackbody target with a diameter of:
57 mm (2.25 inches)
The target provides a stable thermal radiation source for infrared thermometer calibration.
Its surface is designed to provide high emissivity and uniform thermal radiation.
The relatively large target diameter allows many handheld infrared thermometers and industrial pyrometers to be calibrated.
For accurate measurements, the infrared thermometer must be positioned so that its complete measurement spot lies within the blackbody target.
The required measurement distance depends on the optical characteristics of the infrared thermometer.
Target Emissivity of 0.95
The Fluke Calibration 9133 provides a nominal target emissivity of:
ε = 0.95
The manufacturer specifies an emissivity tolerance of:
±0.02 in the spectral range from 8 µm to 14 µm
Emissivity describes how effectively a surface emits thermal radiation compared with an ideal blackbody at the same temperature.
An ideal blackbody has an emissivity of 1.
The Fluke Calibration 9133 provides a controlled radiation source with an emissivity close to this ideal value.
When calibrating infrared thermometers, the emissivity setting of the device under test must be considered.
For instruments with adjustable emissivity, the setting should correspond to the calibration conditions.
The spectral response of the infrared thermometer must also be considered.
Excellent Temperature Accuracy
The Fluke Calibration 9133 provides accurate temperature control throughout its operating range.
The manufacturer specifies:
Temperature accuracy: ±0.4 °C
This specification describes the accuracy of the calibration source under defined operating conditions.
It must not be confused with the measurement uncertainty of a complete infrared thermometer calibration.
The overall calibration uncertainty also depends on the infrared thermometer, measurement distance, target size, emissivity and ambient conditions.
For high-accuracy infrared calibration, these influences must be considered in the measurement uncertainty budget.
Excellent Temperature Stability
Temperature stability is an important characteristic of an infrared temperature calibrator.
The Fluke Calibration 9133 provides:
Temperature stability: ±0.1 °C
Good temperature stability helps maintain constant thermal radiation conditions during calibration.
This is particularly important when calibrating infrared thermometers at several temperature points.
The stable blackbody target allows the operator to compare the indication of the device under test with the reference temperature.
Temperature stability must not be confused with temperature accuracy.
Integrated Thermoelectric Cooling
One of the main advantages of the Fluke Calibration 9133 is its integrated cooling system.
The instrument uses thermoelectric cooling technology.
Unlike conventional refrigeration systems, it does not require a compressor.
This contributes to the compact construction and portability of the instrument.
The cooling system allows the blackbody target to reach temperatures down to −30 °C.
This makes the Fluke Calibration 9133 particularly suitable for low-temperature infrared calibration applications.
The achievable minimum temperature depends on the ambient conditions.
Dry Gas Connection for Low-Temperature Calibration
When a calibration target is cooled below the dew point of the surrounding air, moisture can condense on its surface.
At temperatures below 0 °C, this moisture may freeze.
Ice formation can change the effective emissivity and radiation characteristics of the target.
This may cause significant errors during infrared thermometer calibration.
The Fluke Calibration 9133 therefore features a convenient dry gas connection.
Dry gas can be supplied to the target area to reduce moisture and help prevent ice formation.
This feature is particularly useful during calibration at temperatures below 0 °C.
For reliable results, the gas must be sufficiently dry and used according to the manufacturer’s operating instructions.
Fast Heating and Cooling
The Fluke Calibration 9133 provides efficient heating and cooling performance.
The manufacturer specifies the following typical times.
Heating Performance
Heating from 25 °C to 150 °C:
Approximately 15 minutes
Cooling Performance
Cooling from 25 °C to −20 °C:
Approximately 15 minutes
These short heating and cooling times help reduce waiting times during calibration.
The actual heating and cooling performance depends on ambient conditions and operating configuration.
Calibration of Infrared Thermometers
The Fluke Calibration 9133 is designed for calibrating non-contact infrared thermometers.
The calibration procedure is based on comparing the temperature indication of the infrared thermometer with the temperature of a controlled radiation source.
A typical procedure includes selecting the required calibration temperature, allowing the blackbody target to stabilize and positioning the infrared thermometer at a suitable measurement distance.
The complete measurement spot must remain within the target surface.
The temperature indicated by the infrared thermometer is then recorded.
The indication error can be calculated as:
ΔT = T_DUT − T_REF
Where:
- ΔT = Temperature indication error
- T_DUT = Temperature indicated by the infrared thermometer
- T_REF = Reference radiation temperature
The resulting measurement values can be used to evaluate the performance of the infrared thermometer.
For accurate calibration, the reference temperature must be appropriate for the spectral characteristics and emissivity setting of the device under test.
Calibration of Industrial Pyrometers
The Fluke Calibration 9133 is also suitable for calibrating industrial infrared pyrometers.
Pyrometers are commonly used for non-contact temperature measurement in industrial processes.
Typical applications include temperature monitoring of machinery, production equipment and cooled components.
The Fluke Calibration 9133 provides a stable radiation target for checking the measurement performance of these instruments.
The pyrometer is aligned with the blackbody target and its indicated temperature is compared with the reference temperature.
This allows measurement deviations to be identified.
The optical alignment, measurement distance and spectral response of the pyrometer must be considered.
Importance of Measurement Distance
Measurement distance is an important factor in infrared temperature calibration.
Infrared thermometers measure thermal radiation from a defined field of view.
The measurement spot generally increases with distance.
If the measurement spot becomes larger than the blackbody target, radiation from the surrounding environment can influence the measurement result.
This can cause significant measurement errors.
The Fluke Calibration 9133 provides a 57 mm target diameter.
The operator must ensure that the infrared thermometer measures only the intended target area.
A suitable measurement distance should be selected according to the optical specifications of the device under test.
Infrared Calibration and Measurement Uncertainty
Infrared temperature calibration requires consideration of several measurement uncertainty contributions.
These include:
- Calibration source accuracy
- Temperature stability
- Target emissivity
- Infrared thermometer resolution
- Measurement repeatability
- Spectral response
- Measurement distance
- Target size
- Ambient radiation
- Optical alignment
The effective radiation temperature may differ from the physical temperature of the target.
This is particularly important when calibrating infrared thermometers with spectral characteristics that differ from the specified emissivity range.
For high-accuracy calibration, a suitable radiometric reference and an appropriate uncertainty budget are required.
RS-232 Communication Interface
The Fluke Calibration 9133 features an integrated RS-232 interface.
This allows the instrument to communicate with a computer.
The interface can be used for remote control and monitoring of temperature setpoints.
The manufacturer specifies compatibility with Fluke Calibration Interface-it software.
This provides additional flexibility for professional calibration laboratories.
Compact and Portable Design
The Fluke Calibration 9133 is designed for portable infrared temperature calibration.
The instrument weighs approximately:
4.6 kg
Its external dimensions are:
152 × 286 × 267 mm
The compact construction makes the instrument suitable for industrial maintenance and field calibration.
The small size allows the Fluke Calibration 9133 to be transported between different measurement locations.
It is also suitable for use on laboratory workbenches where space is limited.
NIST-Traceable Calibration
The Fluke Calibration 9133 is supplied with NIST-traceable calibration data.
The manufacturer specifies calibration points at:
- −30 °C
- 0 °C
- 25 °C
- 75 °C
- 100 °C
- 125 °C
- 150 °C
These calibration points cover the specified operating range.
The calibration documentation provides metrological traceability.
For applications requiring accredited calibration, the available calibration options should be checked separately.
Technical Highlights
| Feature | Fluke Calibration 9133 |
|---|---|
| Product type | Portable Infrared Temperature Calibrator |
| Manufacturer | Fluke Calibration |
| Temperature range | −30 °C to +150 °C |
| Reference ambient temperature | 23 °C |
| Temperature accuracy | ±0.4 °C |
| Temperature stability | ±0.1 °C |
| Blackbody target diameter | 57 mm |
| Nominal target emissivity | 0.95 |
| Emissivity tolerance | ±0.02 |
| Specified emissivity wavelength range | 8 µm to 14 µm |
| Temperature resolution | 0.1 °C |
| Heating time from 25 °C to 150 °C | Approximately 15 minutes |
| Cooling time from 25 °C to −20 °C | Approximately 15 minutes |
| Cooling technology | Thermoelectric cooling |
| Dry gas connection | Yes |
| Communication interface | RS-232 |
| Software compatibility | Interface-it |
| Power supply | 115 V or 230 V AC, switchable |
| Frequency | 50 / 60 Hz |
| Power consumption | 200 W |
| Dimensions | 152 × 286 × 267 mm |
| Weight | 4.6 kg |
| NIST-traceable calibration data | Included |
Fluke Calibration 9133 vs. Fluke Calibration 9132
The Fluke Calibration 9133 and 9132 are portable infrared temperature calibrators designed for different temperature ranges.
| Feature | Fluke Calibration 9133 | Fluke Calibration 9132 |
|---|---|---|
| Temperature range | −30 °C to +150 °C | +50 °C to +500 °C |
| Temperature accuracy | ±0.4 °C | ±0.5 °C at 100 °C; ±0.8 °C at 500 °C |
| Temperature stability | ±0.1 °C | ±0.1 °C at 100 °C; ±0.3 °C at 500 °C |
| Blackbody target diameter | 57 mm | 57 mm |
| Nominal emissivity | 0.95 | 0.95 |
| Temperature resolution | 0.1 °C | 0.1 °C |
| Integrated cooling | Yes | No |
| Dry gas connection | Yes | No |
| RS-232 interface | Yes | Yes |
| Weight | 4.6 kg | 1.8 kg |
| Main advantage | Low-temperature infrared calibration | High-temperature infrared calibration |
The Fluke Calibration 9133 is particularly suitable for infrared thermometer calibration at low temperatures.
The Fluke Calibration 9132 is designed for applications requiring elevated temperatures up to 500 °C.
Typical Applications
The Fluke Calibration 9133 is suitable for infrared temperature calibration in a wide range of industrial and laboratory environments.
Typical applications include:
- Infrared thermometer calibration
- Industrial pyrometer calibration
- Low-temperature infrared calibration
- Non-contact temperature measurement
- Portable infrared calibration
- Laboratory infrared calibration
- Industrial maintenance
- Quality assurance
- Production process monitoring
- Temperature measurement verification
- Calibration of handheld infrared thermometers
- Calibration of fixed infrared temperature sensors
- Temperature metrology
Calibration by europascal
Regular calibration is essential for maintaining reliable infrared temperature measurements.
europascal provides professional calibration services for temperature measuring instruments and infrared temperature measurement equipment.
The Fluke Calibration 9133 can be used as a controlled radiation source for calibrating infrared thermometers and industrial pyrometers.
For high-accuracy applications, the calibration procedure must consider the radiometric characteristics of the source and the spectral response of the device under test.
The overall measurement uncertainty depends on the calibration source, emissivity, measurement distance, target size and environmental conditions.
For professional calibration and metrological traceability, visit the europascal Calibration Service.
europascal also supports customers in selecting suitable infrared temperature calibrators and reference measurement equipment.
Why Choose the Fluke Calibration 9133?
The Fluke Calibration 9133 combines accurate temperature control, integrated thermoelectric cooling and a compact portable design.
Its temperature range from −30 °C to +150 °C covers many important industrial and laboratory infrared temperature calibration applications.
The 57 mm blackbody target provides a suitable radiation source for many handheld infrared thermometers and industrial pyrometers.
The nominal emissivity of 0.95 supports calibration of instruments designed for common industrial infrared measurement applications.
Temperature accuracy of ±0.4 °C and stability of ±0.1 °C provide reliable reference conditions.
The integrated cooling system allows calibration at temperatures significantly below ambient.
The dry gas connection helps prevent ice formation on the blackbody target.
Fast heating and cooling performance helps reduce waiting times during calibration.
The RS-232 communication interface supports computer-controlled operation.
With a weight of approximately 4.6 kg, the Fluke Calibration 9133 is suitable for portable calibration applications.
For laboratories and industrial users requiring a compact infrared temperature calibration source with integrated cooling, the Fluke Calibration 9133 offers an excellent combination of accuracy, portability and versatility.
europascal supports customers with infrared temperature calibration equipment, reference thermometers and professional calibration services.
