Fluke Calibration 7526A is a precise process calibrator designed for professional calibration laboratories, instrument workshops and automated calibration systems. It combines accurate sourcing and measurement of DC voltage, DC current, resistance, RTDs and thermocouples with integrated 24 V loop power and optional pressure measurement using compatible Fluke pressure modules.
Positioned between portable field calibrators and high-end multiproduct calibrators, the 7526A provides an excellent combination of accuracy, versatility and economy for temperature and process instrumentation. Typical applications include calibration of RTD and thermocouple indicators, temperature transmitters, pressure gauges, process simulators, data loggers and multimeters.
The Fluke Calibration 7526A provides DC voltage output up to 100 V, DC current output up to 100 mA, resistance simulation up to 4 kΩ, thermocouple source and measurement and extensive RTD/thermistor functionality. An isolated measurement channel can simultaneously measure voltage or current while another signal is being sourced.
For process transmitter applications, the integrated 24 V DC loop power supply can power a transmitter while the 7526A measures the corresponding 4–20 mA loop current. A built-in 250 Ω HART resistor further simplifies common process instrumentation applications.
Pressure calibration capability can be added using compatible Fluke 700P and 750P Series pressure modules and an appropriate pressure source.
Standard RS-232 and IEEE-488 (GPIB) interfaces enable integration into automated calibration systems. Compatibility with Fluke Calibration MET/CAL software provides additional automation capability for laboratories requiring repeatable calibration procedures, data collection and reporting.
At europascal, we provide professional calibration solutions for temperature, pressure and electrical measurement equipment and can assist you in selecting the appropriate Fluke Calibration 7526A configuration and accessories for your calibration workload.
For professional calibration and metrological traceability of process calibrators, temperature measuring instruments and electrical measurement equipment, use the europascal Calibration Service.
Your Benefits at a Glance
- Precision benchtop process calibrator
- Source and measure DC voltage
- Source and measure DC current
- Source and measure resistance
- Thermocouple source and measurement
- RTD source and measurement
- Thermistor support
- SPRT support
- DC voltage output up to 100 V
- DC current output up to 100 mA
- Isolated voltage input up to 100 V
- Isolated current measurement up to 50 mA
- Resistance output up to 4 kΩ
- Resistance measurement up to 4 kΩ
- Integrated 24 V DC loop power
- 4–20 mA loop current measurement
- Integrated 250 Ω HART resistor
- Extensive thermocouple support
- Extensive Pt100 and RTD support
- Individual RTD and SPRT coefficients
- Two LCD displays
- Simultaneous source and measurement display
- Up to nine setpoints per input/output parameter
- Pressure measurement using compatible external modules
- RS-232 interface
- IEEE-488 / GPIB interface
- MET/CAL automation capability
- USB-to-serial adapter supplied as standard
- Ideal for temperature calibration
- Ideal for process instrumentation calibration
Precise Process Calibration
The Fluke Calibration 7526A is designed for calibration laboratories and instrument workshops that require better accuracy and functionality than typical handheld process calibrators without investing in a full high-end multiproduct calibration system.
The instrument combines multiple electrical and temperature calibration functions in one benchtop platform.
Typical devices under test include:
- Temperature transmitters
- RTD indicators
- Thermocouple indicators
- Process controllers
- Data loggers
- Digital process simulators
- Multimeters
- Pressure indicators
- Pressure gauges
- Process instrumentation
This broad workload coverage makes the 7526A particularly useful in laboratories serving industrial process measurement applications.
DC Voltage Output up to 100 V
The Fluke Calibration 7526A provides four DC voltage source ranges:
- 0 to 100 mV
- 0 to 1 V
- 0 to 10 V
- 0 to 100 V
The one-year absolute uncertainty is specified as:
±(30 ppm of output + range-dependent offset)
Resolution extends down to:
1 µV
on the 100 mV range.
The 100 V range provides:
1 mV resolution
This voltage capability supports calibration of many process indicators, data loggers, multimeters and other electrical measuring instruments.
Isolated DC Voltage Measurement
In addition to sourcing voltage, the 7526A provides an isolated voltage measurement input.
Two ranges are available:
0 to 10 V
and:
10 to 100 V
The isolated input is particularly useful when a signal must be measured while another calibration signal is being generated.
This makes the 7526A well suited to transmitter and process instrumentation calibration.
DC Current Output up to 100 mA
The Fluke Calibration 7526A provides DC current output from:
0 to 100 mA
with a resolution of:
1 µA
The one-year absolute uncertainty is specified as:
±(50 ppm of reading + 1 µA)
under the applicable operating conditions.
This range covers standard industrial current signals as well as many current measurement ranges on process instrumentation.
Isolated Current Measurement
The isolated input can measure DC current from:
0 to 50 mA
with a resolution of:
0.1 µA
This range comfortably covers the standard industrial:
4–20 mA
process signal.
The isolated measurement input can be used together with the source functions, providing considerable flexibility during transmitter calibration.
Integrated 24 V Loop Power
An important feature of the Fluke Calibration 7526A is its integrated transmitter loop supply.
The calibrator provides:
24 V DC ±10 %
loop power.
At the same time, it can measure loop current from:
0 to 24 mA
with:
0.1 µA resolution
This enables a two-wire process transmitter to be powered directly by the calibrator while its output current is measured.
The integrated loop supply eliminates the need for a separate external 24 V DC power supply in many calibration setups.
Integrated HART Resistor
The loop power circuit includes a:
250 Ω ±3 % HART resistor
This simplifies connection of HART communication equipment to compatible transmitters.
The combination of loop power, current measurement and the integrated resistor makes the 7526A particularly suitable for process transmitter calibration.
Resistance Output
The Fluke Calibration 7526A provides precision resistance simulation for RTD and resistance-based instrumentation.
The resistance source ranges extend from:
5 Ω to 400 Ω
and:
5 Ω to 4 kΩ
On the 5 Ω to 400 Ω range, the one-year absolute uncertainty is specified at:
±0.015 Ω
with:
0.001 Ω resolution
The 5 Ω to 4 kΩ range provides:
0.01 Ω resolution
This resistance simulation capability is essential for calibration of RTD indicators and temperature transmitters.
Resistance Measurement
The 7526A can also directly measure resistance.
Measurement ranges are:
0 to 400 Ω
and:
0 to 4 kΩ
Resolution is:
0.001 Ω
on the 400 Ω range and:
0.01 Ω
on the 4 kΩ range.
This enables the calibrator to work directly with resistance thermometers and other resistive devices.
Thermocouple Source and Measurement
The Fluke Calibration 7526A provides comprehensive thermocouple simulation and measurement.
Supported thermocouple types include:
- B
- C
- E
- J
- K
- L
- N
- R
- S
- T
- U
- XK
- BP
The electrical thermocouple input and output range extends from:
−10 mV to +75 mV
with:
1 µV resolution
This broad thermocouple capability enables calibration of many different temperature indicators, transmitters, recorders, data loggers and process controllers.
Thermocouple Temperature Ranges
The available temperature range depends on the selected thermocouple type.
Examples include:
Type J: −210 °C to +1200 °C
Type K: −250 °C to +1372 °C
Type S: −50 °C to +1767 °C
Type T: −250 °C to +400 °C
The best one-year temperature uncertainty depends on thermocouple type and temperature.
For example, Fluke specifies best values of approximately:
±0.09 °C for Type J
and:
±0.10 °C for Type K
within their applicable ranges.
RTD Source and Measurement
The Fluke Calibration 7526A supports a comprehensive selection of resistance temperature detectors.
Supported RTD characteristics include:
- Pt100 (385)
- Pt100 (3926)
- Pt100 (3916)
- Pt200
- Pt500
- Pt1000
- Ni120
- Cu427
- SPRT
- YSI 400 thermistor
This broad selection enables calibration of both industrial temperature instrumentation and precision laboratory equipment.
Pt100 Simulation
For a Pt100 with an alpha characteristic of 0.00385, the 7526A supports temperature simulation from:
−200 °C to +800 °C
Fluke specifies best one-year output uncertainty down to approximately:
±0.05 °C
depending on temperature and operating conditions.
RTD simulation enables an indicator or transmitter to be calibrated electrically without placing a physical sensor into a temperature source.
Pt100 Measurement
The Fluke Calibration 7526A also provides high-performance Pt100 measurement.
For a Pt100 (385), Fluke specifies one-year absolute uncertainties of approximately:
±0.020 °C from −80 °C to +100 °C
±0.024 °C from +100 °C to +300 °C
and:
±0.038 °C from +300 °C to +800 °C
under the specified calibration temperature conditions.
This measurement capability makes the 7526A suitable for precision temperature laboratory applications.
SPRT Support
The 7526A supports Standard Platinum Resistance Thermometers.
SPRT temperature capability extends approximately from:
−200 °C to +660 °C
The user interface allows RTD and SPRT coefficients to be entered directly into the calibrator.
Individual coefficients enable the resistance thermometer’s specific calibration characteristics to be used rather than relying only on a generic standard curve.
This is especially useful when calibrated reference thermometers are used.
Thermistor Support
The Fluke Calibration 7526A also supports the widely used:
YSI 400 thermistor
over the range:
15 °C to 50 °C
Fluke specifies one-year uncertainty down to:
±0.007 °C
for suitable YSI 400 applications.
This adds further flexibility for temperature instrumentation calibration.
Simultaneous Source and Measurement
The 7526A includes two LCD displays.
This allows source and measurement values to be viewed simultaneously.
For example, the calibrator can generate a temperature sensor simulation while measuring the resulting electrical output of a transmitter.
This is particularly useful for process transmitter calibration because both the input simulation and output signal can be monitored from the same instrument.
Calibration of Temperature Transmitters
The Fluke Calibration 7526A is particularly well suited to temperature transmitter calibration.
For an RTD transmitter, the calibrator can simulate the resistance corresponding to a specified temperature.
At the same time, the isolated measurement input can measure the transmitter’s 4–20 mA output.
The integrated 24 V loop supply can power the transmitter.
A complete electrical transmitter calibration can therefore be performed using a single benchtop instrument.
Thermocouple Transmitter Calibration
Thermocouple transmitters can be tested in a similar manner.
The 7526A generates the millivolt signal corresponding to the selected thermocouple type and temperature.
The transmitter converts this input into its process output, typically:
4–20 mA
The isolated current input measures this output while the integrated loop supply can power the transmitter.
This provides an efficient solution for multipoint transmitter calibration.
Complete Sensor and Transmitter Calibration
Electrical simulation verifies the electronic portion of a temperature measurement system.
For complete system calibration, the actual temperature sensor must also be considered.
The 7526A can be combined with a temperature source such as a Fluke Calibration 914X Field Metrology Well.
The physical RTD or thermocouple is inserted into the temperature source while the 7526A measures the sensor or transmitter output.
This allows the complete measurement chain to be calibrated.
Pressure Measurement with Fluke Pressure Modules
The Fluke Calibration 7526A can also be used for pressure calibration when combined with compatible external pressure modules.
Fluke specifically supports:
- 700P Series pressure modules
- 750P Series pressure modules
The pressure module provides the reference pressure measurement while a suitable pressure source generates the required test pressure.
This expands the 7526A from a temperature and electrical calibrator into a comprehensive process calibration workstation.
Pressure Generation
The 7526A itself does not generate pressure.
Pressure can be generated using suitable comparison test pumps and pressure sources.
Fluke lists systems such as:
- P5510 for vacuum and pneumatic pressure up to 300 psi
- P5513 for pneumatic pressure control up to 3,000 psi
- P5514 for hydraulic pressure generation up to 10,000 psi
- P5515 for hydraulic pressure generation up to 20,000 psi
The actual measurement capability depends on the pressure module used with the 7526A.
Nine Programmable Setpoints
The Fluke Calibration 7526A can store and recall up to:
nine setpoints
for each input or output parameter.
Frequently used calibration points can therefore be stored directly in the instrument.
This is useful for repetitive calibration procedures involving common points such as:
- 0 %
- 25 %
- 50 %
- 75 %
- 100 %
Stored setpoints reduce manual entry and improve efficiency during routine calibrations.
Intuitive User Interface
The front-panel interface combines:
- Cursor controls
- Function keys
- Numeric keypad
- Dual LCD displays
The menu structure allows the operator to select functions, enter setpoints, configure temperature sensors and manage calibration parameters directly from the front panel.
The dual displays provide a clear overview of source and measurement functions.
Automated Calibration with MET/CAL
The Fluke Calibration 7526A can be integrated with Fluke Calibration MET/CAL software.
MET/CAL enables automated calibration procedures and can control the 7526A remotely.
Automation can improve:
- Calibration throughput
- Procedure consistency
- Data collection
- Result documentation
- Operator efficiency
This makes the 7526A particularly suitable for laboratories with repetitive process instrumentation workloads.
RS-232 and GPIB Interfaces
The 7526A includes standard computer interfaces:
RS-232
and:
IEEE-488 / GPIB
A USB-to-serial adapter cable is also supplied with the calibrator.
These interfaces allow the instrument to be integrated into existing and modern automated calibration systems.
GPIB support is particularly useful in established laboratory systems containing other automated calibration standards.
Technical Highlights
The Fluke Calibration 7526A combines temperature and electrical process calibration functions in a precise benchtop platform:
- Precision Process Calibrator
- DC voltage source to 100 V
- DC voltage measurement to 100 V
- DC current source to 100 mA
- DC current measurement to 50 mA
- 24 V transmitter loop power
- 4–20 mA loop current measurement
- Integrated 250 Ω HART resistor
- Resistance simulation to 4 kΩ
- Resistance measurement to 4 kΩ
- Thermocouple source and measurement
- 13 thermocouple types
- RTD source and measurement
- Pt100, Pt200, Pt500 and Pt1000 support
- Ni120 and Cu427 support
- SPRT support
- YSI 400 thermistor support
- RTD and SPRT coefficient entry
- Pressure module compatibility
- Dual LCD displays
- Nine programmable setpoints per parameter
- RS-232
- IEEE-488 / GPIB
- MET/CAL automation
Technical Specifications
| Feature | Fluke Calibration 7526A |
|---|---|
| Manufacturer | Fluke Calibration |
| Model | 7526A |
| Device type | Precision Process Calibrator |
| DC voltage output | 0 to 100 V |
| DC voltage output uncertainty | ±(30 ppm output + range-dependent offset) |
| DC voltage measurement | 0 to 100 V |
| DC current output | 0 to 100 mA |
| DC current output uncertainty | ±(50 ppm reading + 1 µA) |
| DC current measurement | 0 to 50 mA |
| Loop current measurement | 0 to 24 mA |
| Loop power | 24 V DC ±10 % |
| HART resistor | 250 Ω ±3 % |
| Resistance output | 5 Ω to 4 kΩ |
| Resistance measurement | 0 to 4 kΩ |
| TC electrical range | −10 mV to +75 mV |
| Thermocouple types | B, C, E, J, K, L, N, R, S, T, U, XK, BP |
| Pt100 (385) output | −200 °C to +800 °C |
| Pt100 (385) input | −80 °C to +800 °C |
| Additional RTDs | Pt100, Pt200, Pt500, Pt1000, Ni120, Cu427 |
| Precision thermometer support | SPRT |
| Thermistor | YSI 400 |
| Pressure | Via compatible external pressure modules |
| Stored setpoints | Up to 9 per input/output parameter |
| Interfaces | RS-232 and IEEE-488 / GPIB |
| USB connectivity | USB-to-serial adapter included |
| Automation | MET/CAL compatible |
| Operating temperature | 0 °C to 50 °C |
| Calibration temperature | 18 °C to 28 °C |
| Storage temperature | −20 °C to +70 °C |
| Maximum operating altitude | 3,000 m |
| Power consumption | 15 VA maximum |
| Dimensions | 14.6 × 44.5 × 29.8 cm |
| Weight | Approx. 4.24 kg |
Why Choose the Fluke Calibration 7526A?
The Fluke Calibration 7526A combines precision temperature calibration with the electrical functions required for professional process instrumentation.
It can source and measure DC voltage, current and resistance while also simulating and measuring a comprehensive selection of thermocouples, RTDs and thermistors.
The integrated 24 V loop supply and isolated current measurement make the instrument particularly useful for calibrating 4–20 mA temperature transmitters.
A built-in 250 Ω HART resistor simplifies integration with HART communication equipment.
Extensive RTD support includes Pt100, Pt200, Pt500, Pt1000, Ni120, Cu427 and SPRTs. Individual RTD and SPRT coefficients can be entered directly into the instrument for precision temperature measurement applications.
Thermocouple support covers 13 types, including B, C, E, J, K, L, N, R, S, T, U, XK and BP.
Compatible Fluke pressure modules extend the 7526A into pressure calibration applications, creating a versatile process calibration workstation.
Dual LCD displays allow source and measurement results to be viewed simultaneously, while nine programmable setpoints per parameter simplify repetitive calibration procedures.
Standard RS-232 and IEEE-488 interfaces provide straightforward integration into automated calibration systems, and MET/CAL compatibility supports automated procedures, data acquisition and documentation.
For laboratories requiring greater precision and flexibility than a typical handheld process calibrator without the cost and complexity of a high-end multiproduct calibrator, the Fluke Calibration 7526A provides an excellent balance of performance, functionality and economy.
At europascal, we can assist you in selecting the appropriate 7526A accessories, pressure modules and complementary temperature sources for your individual calibration requirements.
For professional calibration and metrological traceability of process calibrators, RTDs, thermocouples, transmitters and other temperature and electrical measuring equipment, use the europascal Calibration Service.
Discover more Fluke Calibration products here.
Manufacturer information about the Fluke Calibration 7526A is available on the official Fluke Calibration 7526A product page.
