Fluke 700PEx is a series of intrinsically safe pressure modules designed for accurate pressure measurement and calibration in potentially explosive atmospheres. The modules extend the pressure measurement capabilities of compatible Fluke Ex-certified calibrators and are particularly suitable for applications in the chemical, petrochemical, oil and gas, pharmaceutical and process industries.
The Fluke 700PEx series provides differential, gauge and absolute pressure measurement with ranges from 2.5 kPa / 25 mbar up to 20.7 MPa / approximately 207 bar. This allows technicians to select an appropriate pressure module for their calibration task while maintaining the required explosion protection.
The modules are designed for use with intrinsically safe Fluke calibrators such as the Fluke 718Ex and Fluke 725Ex. They communicate digitally with the connected calibrator, which displays the measured pressure in selectable engineering units.
A major advantage of the Fluke 700PEx is its intrinsically safe construction. The series carries the historical ATEX marking II 1 G Ex ia IIC T4 and North American intrinsic safety approvals. These certifications make the modules suitable for specified hazardous-area applications when used in accordance with their certification documents and with compatible equipment.
For many models, Fluke specifies a reference uncertainty of 0.025% of full scale and a total one-year uncertainty of 0.05% of full scale. The actual uncertainty depends on the selected pressure module.
The rugged housing, internal temperature compensation and digital communication make the Fluke 700PEx a reliable solution for industrial pressure calibration.
At europascal, the Fluke 700PEx can be combined with suitable pressure calibrators, pressure generators and accessories to create professional calibration solutions.
For metrological traceability and calibration of pressure measurement equipment, visit the europascal Calibration Service.
Your Benefits at a Glance
- Intrinsically safe pressure modules for hazardous areas
- Historical ATEX certification II 1 G Ex ia IIC T4
- CSA intrinsic safety certification
- Differential pressure measurement
- Gauge pressure measurement
- Absolute pressure measurement
- Eight model variants
- Pressure ranges from 25 mbar to approximately 207 bar
- Reference uncertainty down to 0.025% FS on selected models
- Total one-year uncertainty down to 0.05% FS
- Digital communication with compatible Fluke calibrators
- Internal temperature compensation
- Rugged urethane-molded housing
- Protection against shock, dirt, dust and moisture
- Compact pressure measurement modules
- One-meter connection cable
- 1/4-inch NPT pressure connections
- Media compatibility depending on the selected model
- Stainless-steel pressure connections on selected models
- Suitable for pressure transmitter calibration
- Suitable for pressure switch testing
- Suitable for industrial maintenance
- Suitable for mobile pressure calibration
- Traceable calibration documentation
- Professional calibration support through europascal
Intrinsically Safe Pressure Measurement
The Fluke 700PEx series was developed specifically for pressure measurement in potentially explosive atmospheres.
In industrial environments, flammable gases or vapors may be present. Electrical equipment used in these areas must meet the applicable explosion protection requirements.
The Fluke 700PEx modules use an intrinsically safe design intended to limit electrical and thermal energy to levels that do not create an ignition hazard under the conditions defined by the certification.
The historical certification markings include:
ATEX II 1 G Ex ia IIC T4
CSA I.S. Class I, Division 1, Groups A–D, T4
The specified ambient temperature range for the Ex certification is:
0 °C to +50 °C
The applicable certification, equipment combination and installation conditions must always be checked before use in a hazardous area.
Pressure Ranges up to 207 bar
The Fluke 700PEx family covers a wide range of industrial pressure measurement applications.
The smallest differential-pressure module measures pressures up to:
2.5 kPa / 25 mbar
The highest-pressure version covers:
20.7 MPa / approximately 207 bar
This broad range allows the modules to be used for low differential-pressure measurements as well as high-pressure industrial applications.
The appropriate module should be selected according to the required pressure range, pressure type, measurement uncertainty and media compatibility.
Available Fluke 700PEx Models
The following table provides an overview of the eight models documented by Fluke.
| Model | Pressure Type | Nominal Range | Reference Uncertainty | Total Uncertainty, 1 Year |
|---|---|---|---|---|
| Fluke 700P01Ex | Differential | 2.5 kPa / 25 mbar | 0.200% FS | 0.300% FS |
| Fluke 700P24Ex | Differential | 103 kPa / 1.03 bar | 0.025% FS | 0.050% FS |
| Fluke 700P05Ex | Gauge | 207 kPa / 2.07 bar | 0.025% FS | 0.050% FS |
| Fluke 700P06Ex | Gauge | 690 kPa / 6.9 bar | 0.025% FS | 0.050% FS |
| Fluke 700P27Ex | Gauge | 2.07 MPa / 20.7 bar | 0.025% FS | 0.050% FS |
| Fluke 700P09Ex | Gauge | 10 MPa / 100 bar | 0.025% FS | 0.050% FS |
| Fluke 700PA4Ex | Absolute | 103 kPa / 1.03 bar absolute | 0.050% FS | 0.070% FS |
| Fluke 700P29Ex | Gauge | 20.7 MPa / 207 bar | 0.050% FS | 0.080% FS |
Important: The uncertainty values are model-specific. The 0.025% FS reference uncertainty does not apply to every Fluke 700PEx module.
Differential Pressure Modules
The Fluke 700PEx series includes differential-pressure modules for measuring the pressure difference between two connections.
Differential pressure measurement is commonly required for:
- Differential-pressure transmitters
- Filter monitoring
- Flow measurement systems
- Process pressure measurement
- Low-pressure industrial applications
The Fluke 700P01Ex provides a particularly low differential-pressure range of 25 mbar.
The Fluke 700P24Ex covers differential pressures up to approximately 1.03 bar.
Differential-pressure modules have separate high-pressure and low-pressure connections.
The permissible media and maximum differential or common-mode pressure must be checked for the selected model.
Gauge Pressure Modules
Gauge-pressure modules measure pressure relative to atmospheric pressure.
The Fluke 700PEx family includes gauge-pressure versions covering approximately:
2.07 bar to 207 bar
These modules are particularly suitable for calibration of:
- Industrial pressure transmitters
- Pressure gauges
- Pressure sensors
- Pressure switches
- Process instrumentation
Gauge-pressure modules have one process pressure connection.
The measurement is transmitted digitally to the connected calibrator.
Absolute Pressure Measurement
The Fluke 700PA4Ex is designed for absolute-pressure measurement.
Its nominal range is:
103 kPa / approximately 1.03 bar absolute
The module measures pressure relative to an absolute vacuum reference rather than atmospheric pressure.
Absolute-pressure measurement is useful in applications where atmospheric pressure variations must not influence the indicated pressure reference.
For the 700PA4Ex, Fluke specifies:
0.050% FS reference uncertainty
and:
0.070% FS total one-year uncertainty
Reference Uncertainty down to 0.025% FS
Measurement uncertainty is an important consideration when selecting a pressure reference.
For several Fluke 700PEx models, the reference uncertainty is specified as:
0.025% FS
This specification applies under defined reference conditions of approximately:
23 °C ± 3 °C
The total one-year uncertainty also includes additional contributions from long-term stability and temperature effects.
For many models, the resulting total uncertainty is:
0.050% FS
The lowest-pressure, absolute-pressure and highest-pressure modules have different uncertainty specifications.
Temperature Compensation
The Fluke 700PEx modules incorporate internal temperature compensation.
The manufacturer specifies total one-year uncertainty values over:
0 °C to +50 °C
This makes the modules suitable for pressure calibration in industrial environments where ambient temperatures may vary.
Temperature compensation helps reduce the influence of temperature changes on the pressure measurement.
For operation outside this range, different uncertainty specifications and restrictions may apply.
Digital Communication
The Fluke 700PEx modules communicate digitally with compatible Fluke pressure calibrators.
Each module contains a pressure sensor and internal electronics that process the measured pressure.
The digital measurement information is transmitted to the connected calibrator.
This design eliminates the need to transmit an unconditioned analog pressure signal over the connection cable.
The connected calibrator displays the pressure in the selected engineering unit.
Compatible Fluke Calibrators
The Fluke 700PEx series is designed for use with intrinsically safe Fluke calibrators.
Compatible instrument families documented by Fluke include:
Fluke 718Ex Intrinsically Safe Pressure Calibrator
Fluke 725Ex Multifunction Process Calibrator
These combinations provide a flexible solution for pressure calibration in hazardous industrial environments.
For example, the Fluke 718Ex can measure pressure using its internal sensor or a compatible external Fluke 700PEx module.
The external module extends the available measurement range beyond the calibrator’s internal pressure sensor.
Compatibility must be confirmed for the exact module, calibrator and hazardous-area approval.
Pressure Measurement with Fluke 718Ex
The Fluke 718Ex is an intrinsically safe pressure calibrator with integrated pressure generation.
When combined with a Fluke 700PEx module, the instrument can measure additional pressure ranges.
A typical calibration arrangement consists of:
Pressure Source → Fluke 700PEx → Fluke 718Ex
The device under test is connected to the same pressure source.
The external module measures the applied pressure and transmits the measurement to the calibrator.
This configuration is useful when calibrating pressure transmitters or pressure switches in industrial installations.
Rugged Housing
The Fluke 700PEx modules feature a rugged urethane-molded housing.
The protective construction helps reduce damage caused by:
- Mechanical shocks
- Accidental drops
- Dirt
- Dust
- Moisture
This makes the modules suitable for mobile calibration work in industrial environments.
The compact design also allows the pressure module to be positioned near the pressure connection while the calibrator remains at a convenient operating location.
One-Meter Connection Cable
The pressure modules use an approximately:
1 m connection cable
between the module and the compatible Fluke calibrator.
This allows the pressure sensor to be positioned close to the pressure source or device under test.
Shorter pressure tubing can reduce unnecessary test volume and simplify the measurement setup.
The cable also provides additional flexibility when working in confined industrial installations.
Pressure Connections
The Fluke 700PEx modules use:
1/4-inch NPT pressure connections
Fluke documentation also describes BSP/ISO adapters for most versions.
The high-pressure 700P29Ex is an exception and does not include the same standard metric adapter.
All pressure fittings and hoses must be suitable for the selected module, pressure range and application.
Media Compatibility
Media compatibility depends on the individual Fluke 700PEx model.
Fluke distinguishes between several wetted-material configurations.
Dry
Suitable for dry air or non-corrosive gases.
316 SS
Suitable for media compatible with Type 316 stainless steel.
C276
Suitable for media compatible with Hastelloy C276.
The 700P01Ex is intended for dry media on both differential-pressure connections.
The 700P24Ex has a stainless-steel-compatible high-pressure side and a dry-gas low-pressure side.
The 700P29Ex uses Hastelloy C276-compatible wetted materials.
Before connecting a pressure source, the exact media specification must be checked.
Pressure Calibration in Hazardous Areas
The Fluke 700PEx is particularly useful in industries where pressure calibration must be performed in classified hazardous areas.
Typical applications include:
- Oil and gas production
- Petrochemical plants
- Chemical processing
- Pharmaceutical manufacturing
- Industrial process installations
- Gas distribution
- Pressure transmitter maintenance
- Pressure switch testing
The intrinsically safe construction allows suitable equipment combinations to be used in specified hazardous areas.
However, intrinsic safety does not eliminate the need for appropriate operating procedures, pressure safety measures and verification of the equipment certification.
Technical Data
| Feature | Fluke 700PEx |
|---|---|
| Product type | Intrinsically Safe Pressure Module |
| Number of documented models | 8 |
| Minimum nominal pressure range | 2.5 kPa / 25 mbar |
| Maximum nominal pressure range | 20.7 MPa / 207 bar |
| Pressure types | Differential, gauge, absolute |
| Reference uncertainty | Model dependent |
| Best reference uncertainty | 0.025% FS |
| Best total one-year uncertainty | 0.050% FS |
| Lowest-range module uncertainty | 0.300% FS total |
| Highest-range module uncertainty | 0.080% FS total |
| Temperature range for one-year total uncertainty | 0 °C to +50 °C |
| Communication | Digital |
| Housing | Urethane-molded |
| Cable length | Approx. 1 m |
| Pressure connections | 1/4-inch NPT |
| ATEX marking | II 1 G Ex ia IIC T4 |
| CSA certification | Class I, Division 1, Groups A–D, T4 |
| Compatible calibrators | Fluke 718Ex, Fluke 725Ex |
| Media compatibility | Model dependent |
| Calibration documentation | Traceable calibration certificate |
Typical Applications
The Fluke 700PEx is suitable for professional pressure calibration in potentially explosive atmospheres.
Typical applications include differential-pressure transmitter calibration, gauge-pressure transmitter calibration, absolute-pressure measurement, pressure switch testing and industrial process maintenance.
The modular concept makes it possible to use different pressure ranges with the same compatible intrinsically safe calibrator.
This provides flexibility for technicians who work with different pressure instruments in chemical plants, refineries, gas installations and other hazardous industrial environments.
Calibration by europascal
Regular calibration is essential for maintaining reliable pressure measurement results.
europascal provides professional calibration services for pressure measurement equipment, including pressure modules, pressure calibrators, digital pressure gauges and pressure transmitters.
The Fluke 700PEx modules can be incorporated into professional calibration systems with suitable pressure sources and compatible Fluke Ex-certified calibrators.
For traceable calibration and professional support, visit the europascal Calibration Service.
Further equipment for professional pressure measurement is available in the europascal pressure technology range.
Availability and Successor Products
The Fluke 700PEx is an established pressure module series. Several individual models are now listed by Fluke as discontinued or reclassified.
Fluke recommends the Fluke 750P Series Pressure Modules as successors for certain discontinued 700PEx versions.
The appropriate replacement depends on the required pressure range, media compatibility, measurement uncertainty and intrinsic safety certification.
A replacement module must also be compatible with the intended calibrator and approved for the relevant hazardous-area application.
europascal can support the selection of suitable pressure measurement equipment and replacement solutions.
Why Choose the Fluke 700PEx?
The Fluke 700PEx combines accurate pressure measurement with intrinsically safe construction for professional calibration in hazardous industrial environments.
Its eight documented models cover differential, gauge and absolute pressure applications from 25 mbar to approximately 207 bar.
Selected modules provide reference uncertainty down to 0.025% FS and total one-year uncertainty down to 0.050% FS.
The rugged protective housing, internal temperature compensation and digital communication make the modules suitable for mobile pressure calibration.
Compatibility with intrinsically safe Fluke calibrators such as the 718Ex and 725Ex provides flexibility when different pressure ranges are required.
For professional users working in potentially explosive atmospheres, the Fluke 700PEx offers an established modular pressure measurement solution.
europascal supports customers with pressure calibration equipment, technical advice and professional calibration services.
Further products from Fluke Calibration can be found here.
Manufacturer information about the Fluke 700PEx can be found on the official Fluke website.
