The Fluke Calibration 9103 is a portable dry-block temperature calibrator designed for accurate, reliable and efficient calibration of industrial temperature sensors, resistance thermometers and thermocouples.
With a temperature range from −25 °C to +140 °C, excellent temperature stability and integrated thermoelectric cooling, the Fluke Calibration 9103 provides a versatile solution for laboratory and on-site temperature calibration.
The instrument combines the accuracy of a professional temperature calibration source with the convenience of a compact portable design. Its temperature stability reaches ±0.02 °C at −25 °C, making it particularly suitable for demanding calibration applications.
Unlike conventional heating-only dry-block calibrators, the Fluke Calibration 9103 can generate temperatures significantly below ambient conditions without requiring an external cooling system.
The instrument reaches −25 °C at an ambient temperature of 23 °C, allowing reliable low-temperature calibration in typical laboratory environments.
Interchangeable calibration inserts accommodate different sensor diameters and allow several temperature probes to be calibrated simultaneously.
The Fluke Calibration 9103 also features adjustable heating and cooling rates, programmable temperature setpoints, temperature switch testing and an RS-232 communication interface.
With a weight of approximately 5.7 kg, the instrument is suitable for portable calibration applications in industrial facilities, maintenance departments and calibration laboratories.
europascal supports customers in selecting suitable temperature calibration equipment, reference thermometers and complete calibration systems.
For professional calibration and metrological traceability, visit the europascal Calibration Service.
Your Benefits at a Glance
- Portable dry-block temperature calibrator
- Temperature range from −25 °C to +140 °C
- Integrated thermoelectric cooling
- Temperature stability of ±0.02 °C at −25 °C
- Temperature stability of ±0.04 °C at +140 °C
- Display accuracy of ±0.25 °C for suitable insert openings
- Well-to-well temperature uniformity of ±0.1 °C
- Temperature resolution of 0.1 °C
- Interchangeable calibration inserts
- Different insert configurations available
- Calibration well depth of 124 mm
- Fast heating and cooling performance
- Adjustable temperature ramp rates
- Integrated temperature switch testing
- Eight programmable temperature setpoints
- RS-232 communication interface
- Compact and portable construction
- Weight of approximately 5.7 kg
- Suitable for Pt100 and RTD calibration
- Suitable for thermocouple calibration
- Suitable for industrial temperature sensors
- NIST-traceable calibration certificate included
- Professional support from europascal
Portable Temperature Calibration from −25 °C to +140 °C
The Fluke Calibration 9103 provides a controlled temperature environment over a range from:
−25 °C to +140 °C
The specified temperature range applies at an ambient temperature of 23 °C.
This range covers many important industrial and laboratory temperature calibration applications.
The instrument is particularly suitable for temperature measurements near and below ambient temperature.
Its integrated cooling system allows the calibration block to reach temperatures down to −25 °C without requiring an external refrigeration system.
The Fluke Calibration 9103 can also generate elevated temperatures up to +140 °C.
This makes the instrument suitable for calibrating resistance thermometers, thermocouples and industrial temperature sensors over a wide operating range.
Excellent Temperature Stability
Temperature stability is an important characteristic of a dry-block temperature calibrator.
The Fluke Calibration 9103 provides excellent stability throughout its operating range.
The manufacturer specifies:
±0.02 °C at −25 °C
±0.04 °C at +140 °C
These specifications describe the temporal stability of the calibration block under defined operating conditions.
Good temperature stability helps maintain constant temperature conditions during calibration.
This reduces measurement uncertainty contributions caused by temperature fluctuations.
The stability specification must not be confused with the display accuracy of the instrument.
Accurate Temperature Indication
The Fluke Calibration 9103 provides a calibrated temperature indication.
The manufacturer specifies:
±0.25 °C display accuracy
For insert openings larger than 6.35 mm, the specified accuracy is:
±1 °C
These values describe the accuracy under the manufacturer’s defined measurement conditions.
For applications requiring lower measurement uncertainty, an external calibrated reference thermometer can be used.
The external reference thermometer measures the actual temperature inside the calibration insert.
This allows the indication of the device under test to be compared with a traceable reference temperature.
Integrated Thermoelectric Cooling
One of the main advantages of the Fluke Calibration 9103 is its integrated cooling system.
The instrument uses thermoelectric cooling technology to generate temperatures below ambient conditions.
The system does not require a conventional refrigeration compressor.
This contributes to the compact construction and portability of the instrument.
The manufacturer specifies that the Fluke Calibration 9103 can reach temperatures approximately 50 °C below ambient.
At an ambient temperature of 23 °C, the instrument can reach −25 °C.
This makes the Fluke Calibration 9103 particularly suitable for low-temperature calibration applications.
Interchangeable Calibration Inserts
The Fluke Calibration 9103 uses interchangeable calibration inserts.
Different insert configurations are available to accommodate temperature sensors with different diameters.
The manufacturer offers four insert configurations.
Insert A
Insert A provides a selection of different opening diameters.
It is suitable for users who need to calibrate temperature probes of different sizes.
Insert B
Insert B provides several calibration openings for comparison measurements.
The configuration includes openings with diameters of:
- 9.5 mm
- 6.4 mm
- 4.8 mm
This configuration is particularly suitable for temperature comparison calibration.
Insert C
Insert C provides six calibration openings with a diameter of approximately:
6.4 mm
This configuration is suitable for calibrating several temperature probes of similar diameter.
Insert D
Insert D provides three pairs of metric calibration openings.
This configuration is particularly suitable for users working with metric temperature sensor diameters.
The appropriate insert should be selected according to the sensor dimensions and calibration requirements.
Calibration Well Depth
The Fluke Calibration 9103 provides a calibration well depth of:
124 mm
The immersion depth is an important factor in precision temperature calibration.
Insufficient immersion can cause heat conduction along the probe stem.
This may result in a temperature difference between the sensing element and the calibration block.
For accurate calibration, the sensor should be inserted sufficiently into the calibration well.
The required immersion depth depends on the sensor construction, diameter and measurement uncertainty requirements.
Well-to-Well Temperature Uniformity
The Fluke Calibration 9103 provides good temperature uniformity between calibration openings of similar size.
The manufacturer specifies:
±0.1 °C
This value describes the well-to-well temperature uniformity under defined operating conditions.
Good temperature uniformity is particularly important during comparison calibration.
It helps ensure that the reference thermometer and the device under test are exposed to similar temperatures.
The actual temperature distribution can depend on insert geometry, sensor diameter and thermal loading.
Fast Heating and Cooling
The Fluke Calibration 9103 provides efficient heating and cooling performance.
The manufacturer specifies the following typical times.
Heating Performance
Heating from ambient temperature to +140 °C:
Approximately 18 minutes
Cooling Performance
Cooling from ambient temperature to −25 °C:
Approximately 20 minutes
Stabilization Time
The specified stabilization time is:
Approximately 7 minutes
These values demonstrate the instrument’s suitability for efficient temperature calibration procedures.
Actual heating, cooling and stabilization times depend on ambient conditions and thermal loading.
Adjustable Temperature Ramp Rates
The Fluke Calibration 9103 provides adjustable heating and cooling rates.
The operator can configure the temperature change rate directly using the front panel.
This function is particularly useful for temperature switch testing.
Controlled temperature changes can also support calibration procedures requiring gradual temperature transitions.
The adjustable ramp rate provides flexibility for different measurement applications.
Eight Programmable Temperature Setpoints
The Fluke Calibration 9103 provides memory for eight temperature setpoints.
Frequently used calibration temperatures can be stored and recalled.
This simplifies repeated calibration procedures.
The operator can quickly select the required temperature without entering the value again.
The function helps reduce setup time and improves workflow efficiency.
Integrated Temperature Switch Testing
The Fluke Calibration 9103 supports temperature switch testing.
Temperature switches change their electrical contact state when a defined temperature is reached.
The instrument can be used to evaluate switching behavior during controlled temperature changes.
This is particularly useful for testing thermostats and temperature-dependent switching devices.
The adjustable temperature ramp rate supports controlled heating and cooling during switch testing.
Calibration of Pt100 and RTD Sensors
The Fluke Calibration 9103 is suitable for calibrating industrial resistance thermometers.
Typical examples include Pt100 and Pt1000 temperature sensors.
The sensor under test is inserted into a suitable calibration opening.
After the temperature has stabilized, the sensor indication is compared with the reference temperature.
The indication error can be calculated as:
ΔT = T_DUT − T_REF
Where:
- ΔT = Temperature indication error
- T_DUT = Temperature indicated by the device under test
- T_REF = Reference temperature
The reference temperature may be obtained from the calibrated block indication or an external reference thermometer.
Thermocouple Calibration
The Fluke Calibration 9103 can also be used for thermocouple calibration.
The thermocouple measuring junction is inserted into the calibration block.
The temperature is adjusted to the required calibration point.
The thermoelectric voltage is measured using a suitable instrument.
The measured value can then be compared with the expected thermoelectric voltage for the corresponding thermocouple type.
The measurement uncertainty must include the reference temperature, thermocouple measurement system and reference junction compensation.
Temperature Transmitter Calibration
The Fluke Calibration 9103 is suitable for industrial temperature transmitter calibration.
A temperature sensor connected to a transmitter can be exposed to defined temperatures.
The transmitter output is measured using an appropriate electrical measuring instrument.
The output signal can then be compared with the expected value.
This allows the performance of the temperature transmitter to be evaluated at different calibration points.
The Fluke Calibration 9103 is particularly useful for temperature transmitters operating near ambient temperature.
RS-232 Communication Interface
The Fluke Calibration 9103 features an integrated RS-232 interface.
This allows the instrument to communicate with a computer.
The interface can be used for remote control and automated calibration applications.
The manufacturer specifies compatibility with Interface-it software.
This provides additional flexibility for professional calibration laboratories.
Compact and Portable Design
The Fluke Calibration 9103 is designed for portable calibration applications.
The instrument weighs approximately:
5.7 kg
Its external dimensions are:
143 × 261 × 245 mm
The compact construction makes the instrument suitable for industrial maintenance and field calibration.
The integrated carrying handle simplifies transportation.
The Fluke Calibration 9103 combines professional temperature calibration performance with excellent portability.
NIST-Traceable Calibration Included
The Fluke Calibration 9103 is supplied with a NIST-traceable calibration certificate.
The manufacturer specifies calibration data at the following temperatures:
- −25 °C
- 0 °C
- 25 °C
- 50 °C
- 75 °C
- 100 °C
- 140 °C
The calibration provides documented measurement results and metrological traceability.
For applications requiring accredited calibration, the available calibration options should be checked separately.
Technical Highlights
| Feature | Fluke Calibration 9103 |
|---|---|
| Product type | Portable Dry-Block Temperature Calibrator |
| Manufacturer | Fluke Calibration |
| Temperature range | −25 °C to +140 °C |
| Reference ambient temperature | 23 °C |
| Display accuracy | ±0.25 °C |
| Display accuracy for openings larger than 6.35 mm | ±1 °C |
| Temperature stability at −25 °C | ±0.02 °C |
| Temperature stability at +140 °C | ±0.04 °C |
| Well-to-well uniformity | ±0.1 °C |
| Temperature resolution | 0.1 °C |
| Calibration well depth | 124 mm |
| Insert diameter | 31.8 mm |
| Insert configurations | A, B, C or D |
| Heating time to +140 °C | Approximately 18 minutes |
| Cooling time to −25 °C | Approximately 20 minutes |
| Stabilization time | Approximately 7 minutes |
| Cooling technology | Thermoelectric cooling |
| Communication interface | RS-232 |
| Software compatibility | Interface-it |
| Programmable setpoints | 8 |
| Adjustable ramp rate | Yes |
| Temperature switch testing | Yes |
| Power supply | 115 V or 230 V AC, switchable |
| Frequency | 50 / 60 Hz |
| Power consumption | 150 W |
| Dimensions | 143 × 261 × 245 mm |
| Weight | 5.7 kg |
| NIST-traceable calibration | Included |
Fluke Calibration 9103 vs. Fluke Calibration 9140
The Fluke Calibration 9103 and 9140 belong to the same family of portable dry-block temperature calibrators.
However, the instruments cover different temperature ranges.
| Feature | Fluke Calibration 9103 | Fluke Calibration 9140 |
|---|---|---|
| Temperature range | −25 °C to +140 °C | +35 °C to +350 °C |
| Display accuracy | ±0.25 °C | ±0.5 °C |
| Temperature stability | ±0.02 °C to ±0.04 °C | ±0.03 °C to ±0.05 °C |
| Well-to-well uniformity | ±0.1 °C | ±0.1 °C |
| Calibration well depth | 124 mm | 124 mm |
| RS-232 interface | Yes | Yes |
| Weight | 5.7 kg | 2.7 kg |
| Main advantage | Low-temperature calibration | High-temperature calibration |
The Fluke Calibration 9103 is particularly suitable for applications requiring temperatures below ambient conditions.
The Fluke Calibration 9140 is designed for applications requiring elevated temperatures up to +350 °C.
Typical Applications
The Fluke Calibration 9103 is suitable for:
- Industrial temperature calibration
- Portable temperature calibration
- Low-temperature calibration
- Pt100 calibration
- RTD calibration
- Thermocouple calibration
- Temperature transmitter calibration
- Temperature switch testing
- Temperature comparison calibration
- Industrial maintenance
- Quality assurance
- Production facilities
- Calibration laboratories
- Process instrumentation
- Temperature metrology
Calibration by europascal
Regular calibration is essential for maintaining reliable temperature calibration results.
europascal provides professional calibration services for temperature measuring instruments and temperature calibration equipment.
The Fluke Calibration 9103 can be calibrated to determine its temperature indication error and relevant performance characteristics.
For applications requiring low measurement uncertainty, an external calibrated reference thermometer can be used.
The overall measurement uncertainty depends on the temperature source, reference thermometer, sensor immersion depth and measurement conditions.
For professional calibration and metrological traceability, visit the europascal Calibration Service.
europascal also supports customers in selecting suitable temperature calibration equipment, reference thermometers and complete calibration systems.
Why Choose the Fluke Calibration 9103?
The Fluke Calibration 9103 combines accurate temperature control, integrated thermoelectric cooling and a compact portable design.
Its temperature range from −25 °C to +140 °C covers many important industrial and laboratory calibration applications.
The instrument provides excellent temperature stability of ±0.02 °C at −25 °C and ±0.04 °C at +140 °C.
Interchangeable calibration inserts allow different temperature sensors to be calibrated.
The 124 mm calibration well depth provides suitable immersion conditions for many industrial temperature probes.
Fast heating and cooling performance helps reduce waiting times during calibration.
Additional features such as RS-232 communication, programmable temperature setpoints and adjustable ramp rates provide flexibility for professional calibration applications.
With a weight of approximately 5.7 kg, the Fluke Calibration 9103 is suitable for portable temperature calibration.
For laboratories and industrial users requiring a reliable dry-block calibrator with integrated cooling, the Fluke Calibration 9103 offers an excellent combination of accuracy, portability and versatility.
europascal supports customers with temperature calibration equipment, reference thermometers and professional calibration services.
